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Asokan R.

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Designation: 
Principal Scientist (Agricultural Entomology)
Division/Section: 
Division of Basic Sciences
Specialisation: 
Genome editing, RNAi in insect pest management; DNA Barcoding and Molelcular Phylogeny; Coleoptera specific Bt
Qualification: 
Ph.D.
Research Accomplishments: 

RNAi in the management of the boll worm, Helicoverpa armigera 

RNAi in the management of the whitefly, Bemisia tabaci

RNAi in the management of the aphid, Aphis gossypii

RNAi in the management of the tea mosquito bug, Helopeltis antonii

Inventory of miRNAs from different sap sucking pests of horticultural crops

Molecular diversity & Molecular phylogeny of sap sucking pests of horticultural crops

DNA Barcoding of insect pests of horticultural crops

 

Publications: 
  1. K.P. Jayanth, Sukhada Mohandas, R. Asokan and P.N. Ganga Vishalakshi. 1993. Parthenium pollen induced feeding by Zygoramma bicolorata (Coleoptera: Chrysomelidae) on sunflower (Helianthus annuus) (Compositae). Bulletin of Entomological Research, 83: 595-598.  
  2. R. Asokan*. 1994. Record of new species of thrips on Chromolaena odorata (L.). Chromolaena odorata Newsletter, 8: 6.
  3. K.S. Mohan, R. Asokan and C. Gopalakrishnan. 1996. Isolation and application of a nuclear polyhedrosis virus for the control of the fruit borer, Helicoverpa armigera (Hubner) on tomato. Pest Management in Horticultural Ecosystems, 2:1-8
  4. R.Asokan* and K.S. Mohan. 1996. Safety of sporeless mutant of Bacillus thuringiensis subsp. kurstaki to Cotesia plutellae Kurdj., a larval parasitoid of Plutella xylostella (L.). Pest Management in Horticultural Ecosystems, 2: 45-48.
  5. R. Asokan, * K.S. Mohan and C. Gopalakrishnan. 1996. Effect of commercial formulations of Bacillus thuringiensis Berliner on the yield of cabbage. Insect Environment, 2: 58-59.
  6. R. Asokan*. 1997. Mass rearing and an additional instar of Papilio demoleus L., on acid lime, Citrus aurantifolia Swingle. Insect Environment,2: 128-129.
  7. R. Asokan*, S.J. Singh and Y. Selvaraj. 1997. Morphological studies on the nuclear polyhedrosis virus isolated from Adisura atkinsoni Moore. Pest Management in Horticultural Ecosystems, 3: 43-44.
  8. K.S. Mohan, R. Asokan and C. Gopalakrishnan. 1997. Development and field performance of a sporeless mutant of Bacillus thuringiensis subsp. kurstaki. Journal of Plant Biochemistry & Biotechnology, 6: 105-109. 2 Citations
  9. C. Gopalakrishnan and R. Asokan. 1998. On-farm trails of HaNPV against Helicoverpaarmigera (Hubner) (Lepidoptera: Noctuidae). In the Proceedings of the First National Symposium on Pest Management in Horticultural Crops: Environmental Implications & Thrusts, 215-217.
  10. R. Asokan*, R. Muniappan and T.S. Thontadarya. 1998. Evaluation of radiophosphorus labeling of Pareuchaetes pseudoinsulata Rego Barros and Spodoptera litura (F.). Journal of Nuclear Agriculture & Biology, 27: 220-223.
  11. R. Asokan*, R. Muniappan, T.S. Thontadarya and M. Udayakumar. 1998. Radioisotope labeling of the Siam weed caterpillar, Pareuchates pseudoinsulata Rego Barros. Journal of Nuclear Agriculture & Biology, 27: 264-269.
  12. R. Asokan*. 1998. Potential of plant derived polyflavinoids as “sunscreen” for nuclear polyhedrosis viruses. Insect Environment, 4: 65-66.
  13. R. Asokan*. 1998. A method of delivering Bacillus thuringiensis Berliner insecticidal crystal toxins for the management of diamond back moth on cabbage. Insect Environment, 4: 124.
  14. R. Asokan* and K. S. Mohan. 1999. Use of Bacillus thuringiensis on horticultural crops: An appraisal. Agricultural Reviews, 20 (3-4): 158-168.
  15. R. Asokan* and K. S. Mohan. 2000. Integrated Management of Bt resistance: National and International scenario. Science & Culture, 7-8: 269-270.
  16. R. Asokan*, Sukhada Mohandas and Lalitha Anand. 2000. Biofertilizers and Biopesticides for Horticultural Crops. Indian Horticulture, 45: 44-47.
  1. M. Nagesh, R. Asokan and K. S. Mohan. 2005. Partial characterization of novel nematicidal toxins from Bacillus cereus Frankland & Frankland 1887 and their effect on root-knot nematode, Meloidogyne incognita (Kofoid & White) Chitwood. Journal of Biological Control, 19: 65-70.  
  1. Vageeshbabu S. Hanur, D. P. Prakash, B. S. Deepali, R. Asokan, Y. L. Ramachandra, Riaz Mahmood and Lalitha Anand. 2006. Synergistic use of hypocotyls explants and high BAP preconditioning for enhanced transformation frequency in brinjal (Solanum melongena L.). Journal of Horticultural Sciences, 1: 116-119.
  1. R. Asokan*, N. K. Krishna Kumar, Vikas Kumar and H. R. Ranganath. 2007. Molecular differences in mitochondrial cytochrome oxidase I (mtCOI) gene and development of a species-specific marker for onion thrips, Thrips tabaci Lindeman and melon thrips, T. Palmi Karny (Thysanoptera: Thripidae), vectors of tospoviruses (Bunyaviridae). Bulletin of Entomological Research, 97: 461-470.  
  2. R. Asokan*. 2007. Genetic Engineering of Insects. Resonance, 12: 47-56.
  3. R. Asokan* and Puttaswamy. 2007. Isolation and characterization of Bacillus thuringiensis from soil, leaf, seed dust and insect cadaver. Journal of Biological Control, 21: 83-90.
  4. R. Asokan* and Puttaswamy. 2007. Comparative toxicity of two isolates of Bacillus thuringiensis Berliner from diamond back moth, Plutella xylostella (Lepidoptera: Yponomeutidae) and citrus butterfly, Papilio demoleus (Lepidoptera: Papilionidae) to some important lepidopterous pests of horticultural crops. Journal of Horticultural Sciences,2: 71-72.  
  5. D. P. Prakash, B. S. Deepali, R. Asokan, Y. L. Ramachandra and Vageeshbabu S. Hanur. 2007. Effect of antibiotics and gelling agents in transformation of brinjal (Solanum melongena L.) cv. Manjarigota. Journal of Horticultural Sciences, 2: 19-25.
  6. Vageeshbabu S. Hanur, D. P. Prakash and R. Asokan. 2007. Effect of explant, preconditioning and light on the regeneration of the transgenic tomato. Indian Journal of Horticulture, 64: 104-105.
  7. R. Asokan*, N. K. Krishna Kumar and Abraham Verghese. 2007. Molecular identification of fruit flies, Bactrocera spp (Diptera: Tephritidae) using mitochondrial cytochrome oxidase I (mtCOI). Current Science, 93: 1668-1669.
  1. D. P. Prakash, B. S. Deepali, R. Asokan. Y. L. Ramachandra, D. L. Shetti, Lalitha Anand and Vageeshbabu S Hanur. 2008. Efffect of growth regulators on in vitro complete plant regeneration in brinjal. Indian Journal of Horticulture, 65: 371-376.
  2. R. Asokan*. 2008. RNA interference (RNAi): A novel tool in insect pest management. Current Science, 94:1112.
  3. R. Asokan*. 2008. Bacillus thuringiensis Berliner: Isolation to application: A review. Agricultural Reviews, 29:235-247.
  4. R. Asokan*, K. S. Mohan and Vageeshbabu S. Hanur. 2008. Enhanced persistence of insecticidal crystal proteins of Bacillus thuringiensis subsp kurstaki by transforming the predominant phylloplane bacterium, Bacillus megaterium. Journal of Biological Control, 22: 357-367.
  5. Vikas Kumar, N. K. Krishna Kumar, R. Asokan and H. R. Ranganath. 2008. Thrips vectors of tospoviruses in India. Vatika, 4:20-31.
  6. K. R. Kranthi, S. Kranthi, S. Gopalakrishnan, R.Asokan and C. D. Mayee. 2009. Bt resistance – its management and prospects in the current context of climate change. In the IPM strategies to combat emerging pests in the current scenario of climate change (Eds. V. V. Ramamurthy, G.P. Gupta and S. N. Puri). P.237-264.
  7. R. Asokan* and Vageeshbabu S Hanur. 2010. Potential of insecticidal genes from plants and microbes in insect pest management. Everyman’s Science, XLIV, 5: 279 – 285.
  8. R. Asokan*, K. B. Rebijith, Sakthi K. Singh, A. S. Sidhu, S. Siddharthan, Praveen K. Karanth, R. Ellango and V. V. Ramamurthy. 2011. Molecular identification and phylogeny of Bacterocera species (Diptera: Tephritidae). Florida Entomologist, 94:1026-1035.  
  9. H. M. Mahadevaswmy, R.Asokan*, S. N. Nagesha, D. K. Arora, Ajantha Birah and Riaz Mahmood. 2011. Cloning, characterization and diversity of insecticidal crystal protein genes of Bacillus thuringiensis native isolates from the soils of Andaman & Nicobar Islands. Current Microbiology, 63: 420-425.  
  10. R. Asokan*, K. B. Rebijith, N. K. Krishna Kumar,  K. K. Srikumar, P. Sivarama Bhat. 2011. Development of DNA barcode and species-specific markers for Helopeltis antonii Signoret & Pachypeltis maesarum (Kirkaldy) (Heteroptera: Miridae), pests of Cashew (Anacardium occidentaleL). Entomological News, 122: 173-181.
  11. K. B. Rebijith, R. Asokan* and N. K. Krishna Kumar. 2011. Development of species- specific markers and molecular differences in mtDNA of Thrips palmi Karny and Scirtothrips dorsalis Hood (Thripidae: Thysanoptera), vectors of tospoviruses (Bunyaviridae) in India.  Entomological News, 122: 201-213.
  12. M. Manamohan, M.N. Prakash, G. Sharath Chandra, R. Asokan and S. N. Nagesha. 2011. An improved protocol for rapid and efficient Agrobacterium mediated transformation of tomato (Solanum lycopersicum L.). Journal of Applied Horticulture, 13:3-7.  
  13. N. K. Krishna Kumar, D. K. Nagaraju, C. A. Viraktamath, R. Asokan, H. R. Ranganath, K. N. Chandrasekhara, K. B. Rebijith and T. H. Singh. 2011. Gall insects damaging egg plant and bell peppers in South India. Advances in Genetics & Breeding of Capsicum and Egg plant. 153-
  14. R. Asokan*, H. M. Mahadevaswamy and D. K. Arora.2012. Screening, Diversity and Partial Sequence Comparison of Vegetative Insecticidal Protein (vip3A) Genes in the Local Isolates of Bacillus thuringiensis Berliner. Current Microbiology, 64: 365-370.          
  15. R.Asokan*,S.N. Nagesha, M. Manamohan, N. K. Krishna Kumar, H. M. Mahadeva Swamy, M. N. Prakash, G. Sharath Chandra, K. B. Rebijith and R. Ellango.2012. Common siRNAs for various target genes of the fruit borer, Helicoverpa armigera Hubner (Lepidoptera: Noctuidae). Current Science, 102: 1692-1699.  
  16. R.Asokan*, S.N. Nagesha, M. Manamohan, N.K. Krishna Kumar, H.M. Mahadeva Swamy, K.B. Rebijith, M.N. Prakash and G.Sharath Chandra. 2012. Molecular diversity of Helicoverpa armigera Hubner (Noctuidae: Lepidoptera) in India. Oriental Insects, 46: 130-143.
  17. R. Asokan*, K. B. Rebijith, N. K. Krishna Kumar, K. K. Srikumar, P. Shivarama Bhat and V. V. Ramamurthy. 2012. Molecular identification and diversity of Helopeltis antonii and Helopeltis theivora (Hemiptera: Miridae) in India. Florida Entomologist, 94:350-358.
  18. R. Asokan*, S. N. Nagesha, N. K. Krishna Kumar and M. Manamohan. 2012. Genetic variation of actin gene of Helicoverpa armigera Hubner (Lepidoptera: Noctuidae). Journal of Entomological Research, 36: 123-127.
  19. R. Asokan*, K. B. Rebijith and N. K. Krishna Kumar. 2012. Genetic diversity of tomato fruit borer, Helicoverpa armigera Hübner (Lepidoptera: Noctuidae) inferred by mitochondrial cytochrome oxidase-I (mtCO-I). Pest Management in Horticultural Ecosystems,18: 65-70.
  20. G. Sharath Chandra, R. Asokan, M. Manamohan. 2012. Modified competing polymerase chain reaction primer for single tube quantitative PCR. Analytical Biochemistry, 427:175-177.
  21. Shalini Thakur Singh, Natarajan Gayatri Priya, Jitendra Kumar, Vipin Singh Rana, R. Ellango, Adita Joshi, Garima Priyadarshini, R. Asokan, Raman Rajagopal. 2012. Diversity and phylogenetic analysis of endosymbiotic bacteria from field caught Bemisia tabaci from different locations of North India based on 16S rDNA library screening. Infection, Genetics and Evolution, 12:  411–419.
  22. K. B. Rebijith, R. Asokan*, N. K. Krishna Kumar, V. V. Ramamurthy, V. Krishna. 2012. Development of species-specific markers and molecular differences of Aphis gossypii Glover and Myzus persicae (Sulzer), vectors of Potyviruses (Potyviridae). Florida Entomologist, 95: 677-685.
  23. H. K. Roopa, N. K. Krishna Kumar, R. Asokan*, K. B. Rebijith, Riaz Mahmood and Abraham Verghese. 2012. Phylogenetic analysis of Trialeurodes spp. (Hemiptera: Aleyrodidae) from India based on differences in mitochondrial and nuclear DNA. Florida Entomologist, 95: 1086-1094.
  24. K. B. Rebijith, R. Asokan*, N. K. Krishna Kumar, K. K. Sreekumar, V. V. Ramamurthy & P. Shivarama Bhat.2012. DNA barcoding and development of species-specific markers for the identification of tea mosquito bugs (Miridae: Heteroptera) in India. Environmental Entomology, 41: 1239-1245.  
  25. H. M. Mahadevaswamy, R. Asokan, P. E. Rajasekaran, RiazMahmood, S. N. Nagesha and D. K. Arora. 2012. Analysis of Opportunities and Challenges in Patenting of Bacillus thuringiensis Insecticidal Crystal Protein Genes. Recent Patents on DNA & Gene Sequences, 6: 64-71.
  26. R. Ellango,R. Asokan*, K. B. Rebijith, B. N. Chaithanya, Riaz Mohammed. 2012. Molecular variations in mitochondrial and nuclear genes of Diamondback moth, Plutella xylostella (L.) (Hyponomeutidae: Lepidoptera). Indian Journal of Entomology, 74: 241-245.
  27. M. Manamohan, R. Asokan* and Sukhada Mohandas. 2012. Development of recombinant Cry3A expressing Bacillus cereus isolated from the rhizosphere of brinjal (Solanum melongena L.) in the management of ash weevil (Myllocerus subfasciatus Guerin). Journal of Biological Control, 26: 138-143.
  28. H. M. Mahadevaswamy, R. Asokan*, Riaz Mohammed and S. N. Nagesha. 2012. Molecular characterization and genetic diversity of insecticidal crystal protein genes in Native Bacillus thuringiensis isolates. Current Microbiology, 66: 323-330.
  29. D. C. Lakshmana Reddy, H. M. Mahadeva Swamy, R. Asokan, S. C. Venkatesha and T. K. S. Gowda. 2012. Isolation, Molecular characterization and diversity of Lepidopteran active cry-type genes of Bacillus thuringiensis isolates and their efficacy against Helicoverpa armigera Hubner (Noctuidae: Lepidoptera). Biopesticides International, 8: 93-106.
  30. R. Asokan*, K. B. Rebijith, V. Krishna, N. K. Krishna Kumar, T. K. Jacob, S. D. Devasahayam, Kaomud Tyagi and E. S. Sujeesh, 2012. Molecular diversity of cardamom thrips, Sciothrips cardamomi (Ramakrishna) (Thripidae: Thysanoptera). Oriental Insects, 47: 55-64.
  31. K. B. Rebijith, R. Asokan*, Ranjitha H. Hande and K. Nirmal Babu. 2012. In silico mining of miRNAs from Coffee, Coffea arabica using expressed sequence tags. Journal of Horticultural Science and Biotechnology, 88: 325-337.
  32. H.M.Mahadeva Swamy, R. Asokan* and Riaz Mahmood. 2012. Bacillus thuringiensis cry1I and cry3A coleopteran active insecticidal crystal proteins: Homology based 3D modeling and implications for toxin activity. International Journal of Engineering & Social Science, 2: 51-59.
  33. H. M. Mahadevaswamy, S. N. Nagesha, T. K. S. Gowda, R. Asokan and Riaz Mahmood. 2012. Isolation, characterization and detection of cry gene contents from Bacillus thuringiensisnative isolates in Southern states of India. Plant Cell Biotechnology & Molecular Biology, 13: 111-124.
  34. R. Asokan*. 2012. DNA Barcoding and Molecular Phylogeny of Acari. In Advances in Agricultural Acarology, UAS (B), Bangalore, P.206-213.
  35. M. Manamohan, G. Sharath Chandra, R. Asokan, H. Deepa, M.N. Prakash and N. K. Krishna Kumar. 2013. One-step DNA fragment assembly for expressing intron containing hairpin RNA in plants for gene silencing. Analytical Biochemistry, 433: 189-191.
  36. M. Mani, Sunil Joshi, M. Kalyanasundaram, C. Shivaraju, A. Krishnamoorthy, R. Asokan and K. B. Rebijith. 2013. A new invasive jack Beardsley mealybug Pseudococcus jackbeardsleyi Gimpel and Miller on papaya in India. Florida Entomologist ,96: 242-245.
  37. H. M. Mahadevaswamy, R. Asokan*, Geetha G. Thimmegowda, Riaz Mohammed. 2013. Expression of cry3A gene and its toxicity against Asian Gray Weevil Myllocerus undecimpustulatus undatus Marshall (Coleoptera: Curculionidae). Journal of Basic Microbiology, 53: 664-676.
  38. R. Asokan*, G. Sharath Chandra, M. Manamohanand N.K. Krishna Kumar. 2013. Effect of diet delivered various concentrations of double-stranded RNA in silencing a mid gut and a non-midgut gene of Helicoverpa armigera. Bulletin of Entomological Research,103: 555-563.  
  39. K. B. Rebijith, R. Asokan*, N. K. Krishna Kumar, V. Krishna, B. N. Chaitanya and V. V. Ramamurthy. 2013. DNA barcoding and elucidation of cryptic aphid species (Hemiptera: Aphididae) in India. Bulletin of Entomological Research, 103: 601 -610.
  40. R. Asokan*, K. B. Rebijith, V. V. Ramamurthy, Ranjitha H. Hande and H. K. Roopa. 2013. Prediction and characterization of novel micro RNAs from Nilaparvatha lugens Stal (Hemiptera: Delphacidae). Entomological Research, 43: 224-235.  
  41. M.  Manamohan, R. Asokan, M. N. Prakash, G. Sharath Chandra,  H. Deepa, P.R. Rajiv, Keshav Rao, C.S.Bujji Babu and K. Prasad Babu. 2013. Anthocyanin enrichment in tomato fruit by metabolic engineering. Current Science, 105: 72-80.
  42. R. Asokan*, H. M. Mahadevaswamy, Ajantha Birah and Geetha G. Thimmegowda.2013. Bacillus thuringiensis isolates from Great Nicobar Islands. Current Microbiology, 66: 621 – 626.
  43. P. S. Bhat, K. K. Srikumar, T. N. Raviprasad, K. B. Rebijith and R. Asokan. 2013. Biology, behavior, functional response and molecular characterization of Rihirbus trochantericus var Letuous (Hemiptera: Reduviidae: Harpactorinae): A potential predator of Helopeltis spp (Hemiptera: Miridae). Entomological News, 123: 264 – 277.
  44. R. Asokan*, K. B. Rebijith, Sakthi K Singh and V. V. Ramamurthy. 2013. Life stage independent identification of fruit flies (Diptera: Tephritidae) using 28S rDNA sequences. The Bioscan, 8: 1 – 10.
  45. H. M. Mahadevaswamy, R. Asokan* and Riaz Mahmood. 2013. In silico structural 3D Modeling of novel cry1I and cry3A genes from local isolates of Bacillus thuringiensis. Indian Journal of Microbiology, 54: 94-103.
  46. H. M. Mahadevaswamy, S. N. Nagesha, T. K. S. Gowda, R. Asokan and Riaz Mahmood. 2013. Genetic transformation of cabbage (Brassica oleracea var. capitata) with synthetic cry1F gene to impart resistant to diamondback moth (Plutella xylostella). Journal of Applied Horticulture, 15: 3-9.
  47. H. M. Mahadeva Swamy and R. Asokan*. 2013. New innovations in Bacillus thuringiensis research – A review. International Journal of Agriculture, Environment & Biotechnology, 6: 515-525.
  48. H. M. Mahadeva Swamy and R. Asokan*. 2013. Bacillus thuringiensis ‘Nanopesticide’ a perspective for better and safer crops towards food security and sustainable agriculture. Nanoscience & Nanotechnology – Asia, 3:102-105.
  49. H. M. Mahadeva Swamy, R. Asokan* and Riaz Mahmood. 2013. Bacillus thuringiensis Cry3A coleopteran-active toxin: Homology based 3D model and in silico analysis. Indian Journal of Applied Agricultural Research, 1: 47-53.
  50. R. Asokan*, H. K. Roopa, K. B. Rebijith, H. H. Ranjitha and N. K. Krishna Kumar. 2013. In silico mining of micro-RNAs from Spodoptera frugiperda (Smith) (Lepidoptera: Noctuidae). African Journal of Biotechnology,13: 32-43.  
  51. R. Ellango, R. Asokan*, K. B. Rebijith, Riaz Mahmood and V. V. Ramamurthy. 2013. Cloning and sequence analysis of four important genes of Plutella xylostella (L.) (Lepidoptera: Yponomeutidae). Entomological News,123: 348-356.
  52. H. K. Roopa, K. B. Rebijith, R. Asokan*, Riaz Mahmood and N. K. Krishna Kumar. 2013. Isolation and identification of culturable bacteria from honeydew of whitefly, Bemisia tabaci (G.) (Hemiptera: Aleyrodidae). Meta Gene, 2:114-122.
  53. G.T. Geetha, N. K. Krishna Kumar, K. M. Mahadevaswamy, R. Asokan* and Riaz Mahmood. 2013. Toxicity of different indigenous isolates of Bacillus thuringiensis on mango weevil, Myllocerus undecimpustulatus (Coleoptera: Cucurculionidae).  International Journal of Current Microbiology & Applied Sciences, 2: 268-282.
  54. R. Asokan*, H. M. Mahadevaswamy, Geetha G. Thimme Gowda and Riaz Mahmood. 2014. Diversity analysis and characterization of Coleoptera, Hemiptera and Nematode-active cry genes in native isolates of Bacillus thuringiensis. Annals of Microbiology, 64: 85-98.
  55. K. B. Rebijith, R. Asokan*, V. Krishna, Ranjitha H. Hande, N. K. Krishna Kumar, V. V. Ramamurthy. 2014. In silico prediction and characterization of microRNAs from the melon aphid, Aphis gossypii (Hemiptera: Aphididae). Annals of Entomological Society of America, 107: 521-531
  56. R. Asokan*, G. Sharath Chandra, M. Manamohan, N.K. Krishna Kumar and T. Sita. 2014. Response of various target genes to diet-delivered dsRNA mediated RNA interference in the cotton bollworm, Helicoverpa armigera. Journal of Pest Science, 87: 163 – 172.
  57. P. Asha Thomas, K. B. Rebijith, R. Asokan, V. V. Ramamurthy. 2014. Co-occurrence of different biotypes of Bemisia tabaci (G.) (Hemiptera: Aleyrodidae) on different cotton cultivars, using molecular and morphometric approaches. Annals of Entomological Society of America, 107:389-398.
  58. R. Ellango, R. Asokan* and Riaz Mahmood. 2014. Host specific molecular variations in Bemisia tabaci (G.) as revealed by using mitochondrial and ribosomal marker. The Bioscan, 9: 461-466.
  59. R. Ellango, R. Asokan*, Riaz Mahmood, V. V. Ramamurthy and N. K. Krishna Kumar. 2014. Isolation of new microRNAs from the diamondback moth (Lepidoptera: Yponomeutidae) genome by a computational method. Florida Entomologist, 97: 877-885.
  60. G. Sharath Chandra, R. Asokan*, M. Manamohan, N. K. Krishna Kumar and T. Sita. 2014. Evaluation of reference genes for quantitative real time PCR normalization in cotton boll worm, Helicoverpa. Molecular Biology, 48: 927-938.
  61. K. B. Rebijith, R. Asokan*, V. Krishna, H.H. Ranjitha, N. K. Krishna Kumar and V. V. Ramamurthy. 2014. DNA Barcoding and cryptic diversity in Thrips (Thysanoptera). Florida Entomologist, 97: 1028-1047.
  62. R. Asokan*, K. B. Rebijith, H.K. Roopa and N. K. Krishna Kumar. 2014. Non-Invasive delivery of dsGST is lethal to the sweet potato whitefly, Bemisia tabaci (G.) (Hemiptera: Aleyrodidae). Applied Biochemistry & Biotechnology, 175: 2288-2299.
  63. P. M. Navale, V. Krishna, H. M. Mahadeva Swamy, H. D. Sowmya, R. Asokan, M. Manamohan, Riaz Mahmood and K. Prasad Babu. 2014. RNA interference (RNAi) tool for insect pest management patenting analysis their impact on incentives and disincentives to undertake research and development. International Journal of Current Microbiology & Applied Sciences, 3: 999-1008.
  64. V. Sridhar, A. K. Chakravarthy, R. Asokan, L. S. Vinesh, K. B. Rebijith and S. Vennila. 2014. New record of new invasive South American tomato leaf miner, Tuta absoluta (Meyrich) (Lepidoptera: Gelechiidae) in India. Pest Management in Horticultural Ecosystems, 20: 148-154.
  65. S. J. Gawande, V. S. Gurav, A. A. Ingle, D.P. Martin, R. Asokan, J. Gopal. 2015. Sequence analysis of Indian Iris yellow spot virus ambisense genome segments: evidence of interspecies RNA recombination. Archives of Virology, 160:1285-1289.  
  66. R. Ellango, Shalini Thakur Singh, Vipin Singh Rana, N. Gayathri Priya, Harpreet Raina, Rahul chaubey, N. C. Naveen, Riaz Mahmood, V.V. Ramamurthy, R. Asokan* and R. Rajagopal. 2015. Distribution of Bemisia tabaci genetic groups in India. Environmental Entomology, 44:1258-1264.  
  67. R. Asokan*, B. N. Chaitanya, K. B. Rebijith, N. K. Krishna Kumar, C. A. Viraktamath and V. V. Ramamurthy. 2015. COI based molecular identification of mango leaf hoppers (Hemiptera: Cicadellidae) in India. Indian Journal of Biotechnology, 14: 260-263.
  68. K. K. Srikumar, P.S. Bhat, T. N. Ravi Prasad, K. Vanitha, N. K. Krishna Kumar, K. B. Rebijith and R. Asokan. 2015. Distribution of major sucking pest, Helopeltis spp. (Hemiptera: Miridae) of cashew in India. Proceedings of the Zoological Society, 68: 30 -35.  
  69. R. S. Nandety, Almas Sharif, Shizuo G. Kamita, R. Asokan and B.W. Falk. 2015. Identification of novel and conserved microRNAs in Homalodisca vitripennis, the Glassy Winged Sharpshooter by expression profiling. PLoS ONE, 10 (10) e0139771; DOI:10.1371/journal.pone.0139771.
  70. K.H. Roopa, R. Asokan*, K.B. Rebijith, Ranjitha H. Hande, Riaz Mahmood and N.K. Krishna Kumar. 2015. Prevalence of a new genetic group, MEAM-K of the whitefly, Bemisia tabaci (Hemiptera: Aleyrodidae) in Karnataka, India, as evident from mtCOI sequences. Florida Entomologist, 98: 1062-1071.
  71. K. B. Rebijith, R. Asokan*, H. H. Ranjitha, V. Krishna and N. K. Krishna Kumar. 2015. Diet delivered dsRNAs for Juvenile hormone binding protein and Vacuolar ATPase-H implied their potential in the management of the melon aphid, Aphis gossypii(Glover) (Hemiptera: Aphididae). Environmental Entomology, 45: 268-75.
  72. K. R. Latha, N. K. Krishna Kumar, H. M. Mahadevaswamy, R. Asokan, H. R. Ranganath and Riaz Mahmood. 2015. Molecular identification and diversity of chilli thrips, Scirtothrips dorsalis Hood (Thysanoptera: Thripidae) employing ITS2 marker. Pest Management in Horticultural Ecosystems, 21: 16-26.
  73. Z.H, Lim, K. E. Robinson, R. G. Jain, G. Sharath Chandra, R. Asokan, S. Asgari, Neena Mitter. 2016. Diet delivered RNAi in Helicoverpa armigera – progress and challenges. Journal of Insect Physiology, 85: 86-93.
  74. G. Sharath Chandra, R. Asokan*, M. Manamohan, T. Sita. 2016. Host allelochemicals influence cytochrome P450 isoforms expression, and larval growth and development of the herbivore, Helicoverpa armigera. Current Science,111: 901-906.
  75. K. B. Rebijith, R. Asokan*, H. Ranjitha Hande, N. K. Krishna Kumar, V. Krishna, J. Vinutha and N. Bakthavatsalam. 2016. RNA interference of odorant binding protein 2 (OBP-2) of the cotton aphid, Aphis gossypii (Glover), resulted in altered electrophysiological responses. Applied Biochemistry & Biotechnology, 178: 251-266.
  76. B. N. Chaitanya, R. Asokan*, T. Sita, K.B. Rebijith and N. K. Krishna Kumar. 2016. Double stranded RNA mediated silencing of sodium channel and ultraspiracle genes in Aphis gossypii (Hemiptera: Aphididae). Annals of the Entomological Society of America, 109: 92-98.
  77. K. B. Rebijith, R. Asokan*, H. Ranjitha Hande and N. K. Krishna Kumar. 2016. The first report of miRNAs from a thysanopteran insect Thrips palmi Karny using high throughput sequencing. PLoS ONE, 11 (9): e0163635. doi:10.1371/journal.pone.0163635.
  78. R. Ellango, R. Asokan* and V. V. Ramamurthy. 2016. In silico prediction and characterization of miRNAs from Oncopeltus fasciatus (Hemiptera: Lygaeidae) genome. Applied Biochemistry & Biotechnology, DOI 10.1007/s12010-016-2072-1.
  79. R. Ellango, R. Asokan*, G. Sharath Chandra, N. K. Krishna Kumar, Riaz Mahmood and V. V. Ramamurthy. 2016. Tyrosine hydroxylase, a potential target for the RNAi-            mediated management of diamondback moth (Lepidoptera: Plutellidae). Florida     Entomologist, 99 (3): 1-5.
  80. B. N. Chaitanya, R. Asokan*, K.B. Rebijith, C. N. Rao, P. Ram Kumar and N. K. Krishna Kumar. 2016. Molecular identification and diversity of Asian citrus psyllids using mtCOI gene sequences. Pest Management in Horticultural Ecosystems, 22: 51
  81. S. J. Gawande, S. Anandhan, A. A. Ingle, R. Asokan. 2017. Heteroplasmy due to coexistence of mtCOI haplotypes from different lineages of the Thrips tabaci cryptic species group. Bulletin of Entomological Research (DOI: 10.1017/S0007485317000025)
  82. L. Ragesh, K. B. Rebijith, R. Asokan*, C. A. Jayaprakas, T. K. Jacob, B. N. Chaitanya, H. Ranjitha Hande and H. M. Yeshwanth. 2017. Molecular identification and phylogeny of Callosobruchus spp. using mitochondrial cytochrome oxidase-1 gene sequences. Indian Journal of Entomology (Accepted).
  83.  K. B. Rebijith, R. Asokan*, H. Ranjitha Hande, V. V. Ramamurthy, N. K. Krishna Kumar. 2017. Reconstructing the macroevolutionary patterns of aphids (Hemiptera: Aphididae) using nuclear and mitochondrial DNA sequences. Biological Journal of the Linnean Society, DOI: 10.1093/biolinnean/blx020 [1].
  84. M. N. Navale, M. Manamohan, R. Asokan, V. Krishna, G. Sharath Chandra, K. Prasad Babu, J. Latha, N. K. Krishna Kumar and R. Ellango. 2017. Transgenic tomato expressing dsRNA of Juvenile hormone acid O-methyl transferase gene of Helicoverpa armigera (Lepidoptera: Noctuidae) affects larval growth and its development. Journal of Asia-Pacific Entomology, 20: 559-567.
  85. B. N. Chaitanya, R. Asokan*, T. Sita, K. B. Rebijith, P. Ram Kumar and N. K. Krishna Kumar. 2017. Silencing of JHEH and EcR Genes of Plutella xylostella (Lepidoptera: Plutellidae) Through Double Stranded RNA Oral Delivery. Journal of Asia-Pacific Entomology, 20: 637-643. 
  86. S. Arunkarthick, R. Asokan*, R. Aravintharaj, M. Niveditha and N. K. Krishna Kumar. 2017. A review of insect cell culture: Establishment, Maintenance and Applications in Entomological Research. Journal of Entomological Sciences, 52:261-273.  
  87. G. Sharath Chandra, R. Asokan*, M. Manamohan, R. Ellango, H. C. Sharma, S. M. D. Akbar and N. K. Krishna Kumar. 2017. Double stranded RNA mediated suppression of trypsin like serine protease (t-SP) triggers over expression of another t-SP isoform in Helicoverpa armigera. Applied Biochemistry & Biotechnology, DOI.10.1007/s12010-017-2584-3.
  88. A. S. Vidyashree, C. M. Kalleshwaraswamy, H. M. Mahadeva swamy, R. Asokan,  S. K. Adarsha. 2017. Morphological, molecular identification and phylogenetic analysis of termites from Western Ghats of Karnataka, India. Journal of Asia-Pacific Entomology, DOI: doi:10.1016/j.aspen.2017.11.006
  89. K. S. Sandeep, V. Sridhar, Sharma, A and R. Asokan. 2017. Report on the occurrence of South American tomato moth, Tuta absoluta (Meyrick) in Punjab, India as evident from trap catches and molecular diagnosis. Pest Management in Horticultural Ecosystems, 23: 85-87. 116. K. B. Rebijith, R. Asokan*, Ranjitha Hande, Suresh Gawande, N. K. Krishna Kumar. 2017. Genome-wide identification, expression profiling and target gene analysis of microRNAs in the Onion thrips, Thrips tabaci Lindeman (Thysanoptera: Thripidae), vectors of tospoviruses (Bunyaviridae). Ecology & Evolution,
  90. Srinivasan Venkatramanan, Sichao Wu1, Bowen Shi1, Achla Marathe1, Madhav Marathe, Stephen Eubank, Lalit P. Sah, A. P. Giri, Luke A. Colavito, K. S. Nitin, V. Sridhar, R. Asokan, Rangaswamy Muniappan, G. Norton, Abhijin Adiga. 2017. Towards Robust Models of Food Flows and Their Role in Invasive Species Spread.
Patents: 
Single step method for ihp assembly in plants for RNAi
Awards & Recognitions: 

Single step method for ihp assembly in plants for RNAi

Fellow of AAPMHE, Bangalore

Permanent Address: 
IIHR
Address for Communication: 

Division of Biotechnology, IIHR, Bangalore - 560 089

Email Address: 
asokan.r@icar.gov.in
Telephone #: 
080-23086100 Extn 402