Research Summary:

Viruses cause growth and yield-limiting disease in plants leading to economic losses and threatening food security, particularly in developing countries. Unlike fungicides for fungal diseases, there are no equivalent products for controlling viral diseases in plants. Therefore, managing viral diseases typically involves using resistant plant varieties or controlling virus spread. To achieve this, understanding the disease's epidemiology and strategically applying control measures is essential. My group is dedicated studying the epidemiology of viruses, discovering novel viruses, and developing diagnostic assays for their sensitive detection. The research encompasses wide array of plants from agricultural significance to unexplored or less explored plants, potential reservoir hosts, and native species. We are studying the interaction of viral factors (CP & MP) with the host proteins facilitative their cell to cell and systemic travel. The lab is using CRISPR/Cas based genome editing system for developing tolerance to begomovirus in papaya plants. Most known plant viruses affect crops, but the viral diversity in these species is likely underestimated. While not all plant virus infections cause severe symptoms, especially in wild hosts, these viruses can still threaten agricultural crops through host jumps, leading to emerging diseases. We are studying the host-virus-vector relationships to infer tools to manage them. We are also taking the advantage of advanced sequencing technologies to discover novel plant viruses that is reshaping our understanding of viral evolution and interactions with their hosts.

Research Publications:

1. Kaur C, Srivastava A, Raj R, Niranjan A, Lahri A, Kumar S, Raj SK (2024) Physio-biochemical and nutritional alterations in faba bean due to Bean yellow mosaic virus infection. Acta Physiologiae Plantarum https://doi.org/10.1007/s11738-024-03681-5.

2. Kar S, Mishra SK, Misra S, Agarwal R, Kumar S, Chauhan PS (2023) Endophytic alkalo-tolerant plant growth-promoting bacteria render maize (Zea mays L.) growth under alkaline stress. Current Microbiology (2024) 81:4 https://doi.org/10.1007/s00284-023-03557-w

3. Kumari A, Kumar S, Chauhan PS, Raj SK (2022) Elimination of coexisting Canna yellow mottle virus, Bean yellow mosaic virus and Cucumber mosaic virus from Canna generalis cv. Black Knight through in vitro chemotherapy of rhizome explants. 3Biotech 12:267 DOI: 10.1007/s13205-022-03330-z

4. Raj R, Kaur C, Agrawal L, Kumar S, Chauhan PS, Raj SK (2022) Development of a protocol for the elimination of Cyrtanthus elatus virus-A from Narcissus tazetta by in vitro chemotherapy in combination with electrotherapy. Journal of Virological Methods 300:114368. doi: 10.1016/j.jviromet.2021.114368

5. Kumar S, Raj R, Agrawal L, Gupta T, Raj SK, Jaidi M, Srivastava A (2021) Association of an isolate of papaya leaf curl virus and papaya leaf curl betasatellite with leaf curl disease of radish in India. Journal of Plant Pathology 103:629–634 https://doi.org/10.1007/s42161-021-00764-x

6. Raj R, Kaur C, Srivastava A, Kumar S, Raj SK (2020) Sequence analyses of RT-PCR products obtained from seven infected leaf samples revealed existence of three potyvirus species in Indian narcissus (Narcissus tazetta L.). 3Biotech, 10(10):428. DOI: 10.1007/s13205-020-02418-8

7. Raj R, Lalit A, Kumar S, Chauhan PS, Raj SK (2019) Complete genome sequence analysis of Narcissus yellow stripe virus infecting Narcissus tazetta in India. 3Biotech 9(11):409 DOI: 10.1007/s13205-019-1939-6

8. Kaur C, Raj R, Kumar S, Purshottam DK, Agrawal L, Chauhan PS, Raj SK (2019) Elimination of Bean yellow mosaic virus from infected cormels of three cultivars of gladiolus using thermo, electro- and chemotherapy. 3Biotech. 9(4):154. https://doi.org/10.1007/s13205-019-1684-x

9. Kumar S, Agrawal L, Srivastava A, Chauhan PS, Raj SK (2018) Study of biochemical and histopathological changes induced in the sweet pepper (Capsicum annuum L.) in response to Chilli leaf curl virus infection. Physiological and Molecular Plant Pathology 104, 95-102 https://doi.org/10.1016/j.pmpp.2018.10.001

10. Kaur C, Raj R, Srivastava A, Kumar S, Raj SK (2018) Sequence analysis of six full-length bean yellow mosaic virus genomes reveals phylogenetic diversity in India strains, suggesting subdivision of phylogenetic group-IV. Arch Virol.163(1):235-242. DOI: 10.1007/s00705-017-3609-5

11. Raj R, Kaur C, Agrawal L, Chauhan PS, Kumar S, Raj SK (2018) Full-length genome sequence of Cyrtanthus elatus virus-A isolated from Narcissus tazetta in India. 3Biotech. 8(3):168. https://doi.org/10.1007/s13205-018-1189-z

12. Singh P, Prasad R, Tewari R, Jaidi M, Kumar S, Rout PK, Rahman L (2018) Silencing of quinolinic acid phosphoribosyl transferase (QPT) gene for enhanced production of scopolamine in hairy root culture of Duboisia leichhardtii. Nature Scientific Reports 8 DOI:10.1038/s41598-018-32396-0 13939

13. Gautam K, Kaur C, Raj R, Kumar S, Jaidi M, Raj SK, Purshottam D, Roy R (2017) Elimination of Cucumber mosaic virus from gerbera (Gerbera jamesonii) cv. Zingaro through in vitro chemotherapy of capitulum explants. Indian Journal of Biotechnology 16: 641-647. http://nopr.niscair.res.in/handle/123456789/44365

14. Jaidi M, Kumar S, Raj SK (2017) First report of Chilli leaf curl India virus infecting Mirabilis jalapa in India. New Disease Reports 35(2) 2044-0588 DOI:10.5197/j.2044-0588. 2017.035.002

15. Srivastava A, Agrawal L, Raj R, Jaidi M, Raj SK, Gupta S, Dixit R, Singh PC, Tripathi T, Sidhu OP, Singh BN, Shukla S, Chauhan PS, Kumar S (2017) Ageratum enation virus infection induces programmed cell death and alters metabolite biosynthesis in Papaver sominiferum. Frontiers in Plant Science 8: 1172 https://doi.org/10.3389/fpls.2017.01172

16. Kumari A, Raj R, Kumar S, Chauhan PS, Raj SK (2016) Coexistence of three virus genera (Badnavirus, Potyvirus and Cucumovirus) in Canna Species in India. Annals of Virology and Research 2(1):1008.

17. Kumar S, Chauhan PS, Raj R, Agrawal L, Srivastava A, Gupta S, Mishra SK, Yadav S, Singh PC, Raj SK, Nautiyal CS (2016) Paenibacillus lentimorbus inoculation enhances tobacco growth and extenuates the virulence of Cucumber mosaic virus. PlosOne 11(3):e0149980. DOI:10.1371/journal.pone.0149980

18. Agrawal L, Gupta S, Mishra SK, Pandey G, Kumar S, Chauhan PS, Chakrabarty D, Nautiyal CS (2016) Elucidation of complex nature of PEG induced drought-stress response in rice root using comparative proteomics approach. Frontiers in Plant Science 7:1466. doi: 10.3389/fpls.2016.01466

19. Srivastava A, Kumar S, Jaidi M, Raj SK, Shukla SK (2016) First report of Tomato leaf curl New Delhi virus on opium poppy (Papaver somniferum) in India. Plant Disease 100(1):232 https://doi.org/10.1094/PDIS-08-15-0883-PDN

20. Kumar S, Jaidi M, Raj SK (2016) Molecular characterization of a Begomovirus and Betasatellite infecting wild sunflower (Helianthus spp.) in India. Virology Research Journal 1:1

21. Srivastava A, Kumar S, Jaidi M, Raj SK (2016). Association of Cotton leaf curl Multan virus and its associated betasatellite with leaf curl disease of Hibiscus rosa-sinensis in India. New Disease Reports 33(4) 2044-0588. DOI:10.5197/j.2044-0588. 2016.033.004

22. Kumar S, Srivastava A, Jaidi M, Chauhan PS, Raj SK (2016) Molecular characterization of a Begomovirus, α-Satellite, and β-Satellite associated with leaf curl disease of Parthenium hysterophorus in India. Plant Disease 100(11) 2299-2305 https://doi.org/10.1094/PDIS-09-15-0982-RE

23. Singh P, Khan S, Kumar S, Rahman L (2016) Establishment of an efficient Agrobacterium-mediated genetic transformation system in Pelargonium graveolens: an important aromatic plant. Plant Cell Tissue and Organ Culture (PCTOC) 129(1) 35-44 https://doi.org/10.1007/s11240-016-1153-8

24. Kumar S, Gautam KK, Raj SK (2015) Sequence analysis and genetic diversity of five new Indian isolates of Cucumber mosaic virus. Acta virologica 59: 398 –404 doi:10.4149/av_2015_04_398

25. Jaidi M, Kumar S, Srivastava A, Raj SK (2015) First report of Clerondendron yellow mosaic virus on golden dewdrop (Duranta erecta) in India. New Disease Reports 32, 12. http://dx.doi.org/10.5197/j.2044-0588.2015.032.012

26. Jaidi M, Kumar S, Srivastava A, Raj SK (2015) First report of Ageratum enation virus and Ageratum leaf curl betasatellite infecting Calendula officinalis in India. New Disease Reports 32, 6. http://dx.doi.org/10.5197/j.2044-0588.2015.032.006

27. Jaidi M, Srivastava A, Kumar S, Raj SK, Singh R (2015) First report of natural occurrence of Papaya leaf crumple virus on soybean in India. New Disease Reports 32, 15. http://dx.doi.org/10.5197/j.2044-0588.2015.032.015

28. Gautam KK, Srivastava A, Kumar S, Snehi SK, Raj SK, Nautiyal, CS (2015) First report of Candidatus Phytoplasma asteris' (16SrI group) associated with yellows disease of gerbera (Gerbera jamesonii) from India. New Disease Reports 31 24-24 http://dx.doi.org/10.5197/j.2044-0588.2015.031.024

29. Srivastava A, Kumar S, Jaidi Meraj, Raj SK (2015) Molecular characterization of a new begomovirus associated with leaf yellow mosaic disease of Jatropha curcas in India. Archives of virology 160(5) 1359-1362 DOI: 10.1007/s00705-015-2375-5

30. Kumari A, Kaur C, Kumar S, Raj SK, Roy RK, Nautiyal CS (2015) First report of Bean yellow mosaic virus causing a mosaic disease of Canna sp. in India. Plant Disease 99(6) 897-897 https://doi.org/10.1094/PDIS-01-15-0001-PDN.

31. Srivastava A, Jaidi M, Kumar S, Raj SK (2015) Molecular identification of a new begomovirus associated with leaf crumple disease of Jatropha curcas L. in India. Archives of virology 160(2) 617-619 DOI: 10.1007/s00705-014-2288-8

32. Kumari A, Kumar S, Raj SK, Johri JK, Nautiyal CS (2015) First report of Canna yellow mottle virus associated with yellow vein mosaic disease of betel vine (Piper betel) in India. Plant Disease 99: 1189 https://doi.org/10.1094/PDIS-01-15-0098-PDN

33. Kumar S, Raj R, Kaur C, Raj SK (2015) Association of Nerine yellow stripe virus with mosaic disease of Crinum asiaticum ornamental plant in India. Plant Disease 99(11) 1655-1655 https://doi.org/10.1094/PDIS-02-15-0211-PDN

34. Kumar S, Raj R, Kaur C, Raj SK, Roy RK (2015) First Report of Cyrtanthus elatus virus A in Narcissus tazetta in India. Plant Disease 99(11) 1658-1658 https://doi.org/10.1094/PDIS-04-15-0492-PDN

35. Srivastava A, Kumar S, Jaidi M, Raj SK (2015) Characterization of a novel begomovirus associated with yellow mosaic disease of three ornamental species of Jatropha grown in India. Virus research 201: 41-49 https://doi:10.1016/j.virusres.2015.02.015

36. Kaur C, Kumar S, Raj SK (2015) Association of a distinct strain of Chilli veinal mottle virus with mottling and distortion disease of Datura inoxia in India. Archives of Phytopathology and Plant Protection 48(6) 545-554 https://doi.org/10.1080/03235408.2015.1052260

37. Kaur C, Kumar S, Raj SK, Chauhan PS, Sharma N (2015) Characterization of a new isolate of Bean yellow mosaic virus group-IV associated with mosaic disease of Gladiolus in India. J Plant Pathol Microb 6: 10 DOI: 10.4172/2157-7471.1000309

38. Raj SK, Kumar S, Srivastava A (2015) Association of tomato leaf curl Palampur virus with yellow mosaic disease of Armenian cucumber (Cucumis melo var. flexuoses) and wild melon (C. callosus var. agrestis) in India. Archives of Phytopathology and Plant Protection 48: 751-759 https://doi.org/10.1080/03235408.2016.1140561

39. Srivastava A, Kumar S, Raj SK (2015) Molecular Characterization of a Begomovirus and Betasatellite Causing Yellow Vein Net Disease of Ageratum houstonianum. Plant Disease 99(5) 627-631 https://doi.org/10.1094/PDIS-03-14-0333-RE

40. Nath K, Kumar S, Poudyal RS, Yang YN, Timilsina R, Park YS, Nath J, Chauhan P, Pant B, Lee C-H (2014) Developmental stage-dependent differential gene expression of superoxide dismutase isoenzymes and their localization and physical interaction network in rice (Oryza sativa L.). Genes & Genomics 36(1) 45-55 DOI:10.1007/s13258-013-0138-9

41. Kumar S, Gautam KK, Raj SK (2014) Molecular identification of Cucumber mosaic virus isolates of subgroup IB associated with mosaic disease of eggplant in India. VirusDisease 25(1) 129-131 doi: 10.1007/s13337-013-0174-8

42. Srivastava A, Kumar S, Raj SK (2014) Association of Pedilanthus leaf curl virus with yellow mottling and leaf curl symptoms in two jasmine species grown in India. Journal of General Plant Pathology 80:370-373 https://doi.org/10.1007/s10327-014-0517-3

43. Kumari A, Kumar S, Raj SK (2014) First report of Canna yellow mottle virus on canna from India. New Disease Reports 29:9 https://doi.org/10.5197/j.2044-0588.2014.029.009

44. Srivastava A, Kumar S, Raj SK, Pande SS (2014) Association of a distinct strain of hollyhock yellow vein mosaic virus and Ludwigia leaf distortion betasatellite with yellow vein mosaic disease of hollyhock (Alcea rosea) in India. Arch Virology 159(10):2711-5. DOI: 10.1007/s00705-014-2108-1

45. Gautum KK, Raj R, Kumar S, Raj SK, Roy RK, Katiyar R (2014) Complete sequence of RNA3 of Cucumber mosaic virus isolates infecting Gerbera jamesonii suggests its grouping under IB subgroup. VirusDisease 25(3) 398-401 DOI: 10.1007/s13337-014-0216-x

46. Kaur C, Raj R, Kumar S, Raj SK (2014) First report of Bean yellow mosaic virus on Cape gooseberry in India. New Disease Report 29:17 http://dx.doi.org/10.5197/j.2044-0588.2014.029.017

47. Srivastava A, Jaidi M, Kumar S, Raj SK, Shukla S (2014) First report of Papaya leaf curl virus association with leaf curl disease of grain amaranth (Amaranthus cruentus L.) from India. Phytoparasitica 43:97–101. https://doi.org/10.1007/s12600-014-0424-3

48. Srivastava A, Kumar S, Raj SK (2014) First report of Ageratum enation virus, betasatellite and alphasatellite causing leaf curl and enation disease of Amaranthus hypochondriacus in India. Plant Disease 98: 1285 DOI: 10.1094/PDIS-04-14-0338-PDN

49. Kaur C, Kumar S, Raj SK (2013) New record of association of Bean yellow mosaic virus with mosaic disease of Vicia faba in India. Indian Journal of Virology 24(1) 95-96 DOI: 10.1007/s13337-013-0128-1

50. Vishnoi R, Raj SK, Kumar S (2013) Biological and molecular characterization of a Cucumber mosaic virus isolate associated with mosaic disease of banana in India. Phytoparasitica 41:545–555 DOI: - 10.1007/s12600-013-0315-z

51. Srivastava A, Raj SK, Kumar S, Snehi SK, Kulshreshtha A, Hallan V, Pande SS (2013) Molecular identification of Ageratum enation virus, betasatellite and alphasatellite molecules isolated from yellow vein diseased Amaranthus cruentus in India. Virus Genes 47(3) 584-90 DOI: 10.1007/s11262-013-0971-6

52. Srivastava A, Raj SK, Kumar S, Snehi SK (2013) New record of Papaya leaf curl virus and Ageratum leaf curl betasatellite associated with yellow vein disease of aster in India. New Disease Reports 28:6 DOI:10.5197/j.2044-0588.2013.028.006

53. Kaur C, Kumar S, Snehi SK, Raj SK (2013) Molecular detection of Jasmine potyvirus associated with yellow mosaic symptoms on Jasminum sambac L. in India. Archives of Phytopathology and Plant Protection 46(9):1102-1107 https://doi.org/10.1080/03235408.2012.759376

54. Tiwari JN, Nath K, Kumar S, Tiwari RN, Kemp KC, Le N-H, Youn D-H, Lee J-S, Kim K-S (2013) Stable platinum nanoclusters on genomic DNA-graphene oxide with a high oxygen reduction reaction activity. Nature communications 4: 1 https://doi.org/10.1038/ncomms3221

55. Pratap D, Raj SK, Kumar S, Snehi SK, Gautam KK, Sharma AK (2012) Coat protein-mediated transgenic resistance in tomato against a IB subgroup Cucumber mosaic virus strain. Phytoparasitica 40(4) 375-382 https://doi.org/10.1007/s12600-012-0238-0

56. Gautam KK, Kumar S, Raj SK (2012) Molecular characterization of Cucumber mosaic virus strain causing severe mosaic disease on petunia in India. Phytoparasitica 40(5) 425-431 https://doi.org/10.1007/s12600-012-0243-3

57. Pratap D, Kumar S, Snehi SK, Raj SK (2012) Biological and molecular characterization of Cucumber mosaic virus isolate causing shoestring disease of tomato in India which has closer affinity to European or East Asian isolates of CMV. Indian Journal of Virology 23(1) 57-63 https://doi.org/10.1007/s13337-012-0059-2

58. Kumar S, Raj SK, Sharma AK, Varma HN (2012) Genetic transformation and development of Cucumber mosaic virus resistant transgenic plants of Chrysanthemum morifolium cv. Kundan. Scientia Horticulturae13 (4) 40-45 https://doi.org/10.1016/j.scienta.2011.10.019

59. Khan AA, Sharma R, Afreen B, Naqvi QA, Kumar S, Snehi SK, Raj SK (2011) Molecular identification of a new isolate of Cucumber mosaic virus subgroup II from basil (Ocimum sanctum) in India. Phytoparasitica 39: 199-203 https://doi.org/10.1007/s12600-011-0146-8

60. Raj SK, Kumar S, Verma DK, Snehi SK (2011) First report on molecular detection and identification of Tomato aspermy virus naturally occurring on gladiolus in India. Phytoparasitica 39(3) 303-307 DOI:10.1007/s12600-011-0145-9

61. Pratap D, Kumar S, Raj SK, Sharma AK (2011) Agrobacterium-mediated transformation of eggplant (Solanum melongena L.) using cotyledon explants and coat protein gene of Cucumber mosaic virus. Indian Journal of Biotechnology 10 (1):19-24

62. Kumar S, Khan MS, Raj SK, Sharma AK (2009) Elimination of mixed infection of Cucumber mosaic and Tomato aspermy virus from Chrysanthemum morifolium Ramat. cv. Pooja by shoot meristem culture. Scientia Horticulturae 119:108-112 https://doi.org/10.1016/j.scienta.2008.07.017

63. Raj SK, Snehi SK, Kumar S, Banerji BK, Dwivedi AK, Roy RK, Goel AK (2009) First report of Candidatus Phytoplasma asteris' (16SrI group) associated with colour-breaking and malformation of floral spikes of gladiolus in India. Plant Pathology 58(6) 1170 https://doi.org/10.1111/j.1365-3059.2009.02112.x

64. Raj SK, Snehi SK, Kumar S, Khan MS (2009) First finding of Candidatus Phytoplasma trifolii (16SrVI group) associated with little leaf disease of Datura inoxia in India. Plant Pathology 58(4) 791-791 DOI:10.1111/j.1365-3059. 2009.02053.x

65. Raj SK, Snehi SK, Kumar S, Pratap D, Khan MS (2009) Association of 'Candidatus Phytoplasma asteris' (16SrI group) with yellows of Achyranthes aspera in India. Plant Pathology 58:390. https://doi.org/10.1111/j.1365-3059.2008.02004.x

66. Raj SK, Snehi SK, Kumar S, Khan MS (2009) First molecular detection and identification of a potyvirus associated with severe mosaic disease of amaryllis (Hippeastrum hybridum Hort.) in India. Australasian Plant Disease Notes 4(1) 50-53 https://doi.org/10.1071/DN09021

67. Raj SK, Kumar S, Choudhari S, Verma DK (2009) Biological and molecular characterization of three isolates of Tomato aspermy virus infecting chrysanthemums in India. Journal of Phytopathology 157(2)117-125 DOI:10.1111/j.1439-0434. 2008.01476.x

68. Raj SK, Snehi SK, Kumar S, Ram T, Goel AK (2009) First report of Tuberose mild mosaic potyvirus from tuberose (Polianthes tuberosa L.) in India. Australasian Plant Disease Notes 4(1) 93-95 https://doi.org/10.1071/DN09040

69. Afreen B, Khan AA, Naqvi QA, Kumar S, Pratap D, Snehi SK, Raj SK (2009) Molecular identification of a Cucumber mosaic virus subgroup II isolate from carrot (Daucus carota) based on RNA 3 genome sequence analyses. Journal of Plant Diseases and Protection116(5): 193-199 https://doi.org/10.1007/BF03356310

70. Raj SK, Khan MS, Snehi SK, Kumar S, Mall S, Rao GP (2008) First report of phytoplasma Candidatus phytoplasma asteris (16SrI) from Parthenium hysterophorus L. showing symptoms of virescence and witches-broom in India. Australasian Plant Disease Notes 3(1)44-45 DOI:10.1007/BF03211233

71. Khan AA, Rafiq A, Kumar S, Pratap D, Verma DK, Naqvi QA (2008) Molecular evidence for the association of Cucumber mosaic virus causing mosaic and leaf deformation of Pisum sativum in Western Uttar Pradesh, India. Australasian Plant Disease Notes 3(1) 42-43 DOI:10.1007/BF03211232

72. Raj SK, Snehi SK, Khan MS, Kumar S (2008) Candidatus Phytoplasma asteris (group 16SrI) associated with a witches’ broom disease of Cannabis sativa in India. Plant Pathology 57:1173-1173 https://doi.org/10.1111/j.1365-3059.2008.01920.x

73. Raj SK, Kumar S, Snehi SK, Pathre U (2008) First report of Cucumber mosaic virus on Jatropha curcas in India. Plant disease 92(1) 171. DOI: 10.1094/PDIS-92-1-0171C

74. Raj SK, Snehi SK, Kumar S, Khan MS, Pathre U (2008) First molecular identification of a begomovirus in India that is closely related to Cassava mosaic virus and causes mosaic and stunting of Jatropha curcas L. Australasian Plant Disease Notes 3(1)69-72. https://doi.org/10.1007/BF03211244

75. Pratap D, Kumar S, Raj SK (2008) First molecular identification of a Cucumber mosaic virus isolate causing shoestring symptoms on tomato in India. Australasian Plant Disease Notes 3(1) 57-58. https://doi.org/10.1007/BF03211239

76. Raj SK, Kumar S, Choudhari S (2007) Identification of Tomato aspermy virus as the cause of yellow mosaic and flower deformation of chrysanthemums in India. Australasian Plant Disease Notes 2: 1-2. https://doi.org/10.1071/DN07001

77. Raj SK, Khan MS, Kumar S (2007) Molecular identification of Candidatus Phytoplasma asteris associated with little leaf disease of Chrysanthemum morifolium. Australasian Plant Disease Notes 2(1)21-22 DOI:10.1071/DN07009

78. Raj SK, Khan MS, Snehi SK, Kumar S, Khan AA (2007) Natural occurrence of a Begomovirus on Dimorphotheca sinuata in India. Australasian Plant Disease Notes 2(1)25-26 https://doi.org/10.1071/DN07011

79. Raj SK, Kumar S, Pratap D, Vishnoi R, Snehi SK (2007) Natural Occurrence of Cucumber mosaic virus on Rauvolfia serpentina, a new record. Plant Disease 91(3):322. https://doi.org/10.1094/PDIS-91-3-0322C

80. Raj SK, Kumar S, Pratap D, Vishnoi R, Choudhari S, Chandra S (2007) Natural occurrence of Cucumber mosaic virus on lemongrass (Cymbopogon citratus), a new record. Australasian Plant Disease Notes 2(1):95-96 https://doi.org/10.1071/DN07039

81. Raj SK, Khan MS, Kumar S, Snehi SK (2006) Association of Candidatus Phytoplasma asteris with little leaf disease of desert rose. Plant Pathology 56:1040 https://doi.org/10.1111/j.1365-3059.2007.01636.x

82. Kumar S, Srivastava A, Raj SK (2005) Molecular detection of Cucumber mosaic virus in chrysanthemum cultivars. Acta Phytopathologica et Entomologica Hungarica 40:205-211 DOI:10.1556/APhyt.40.2005.3-4.2

List of Books:

1. Kumar S, Raj SK, Verma HN (2016). Cucumoviruses causing diseases in chrysanthemum and their management. Eds. Andrei Gisca. Scholar’s Press, OmniScriptum GmbH & Co. KG, Germany. ISBN 978-3-659-84149-1.

List of Books chapters:

1. Rathore A, Vishwakarma T, Maurya DK, Maurya PK, Raj S. VA, Chauhan PS, Raj SK, Kumar S (2024) Sustainable management of economically important plant viral pathogens by plant growth-promoting rhizobacteria. In: (Eds.) Plant-microbe Interaction: An Insight for Stress Management. Springer, Singapore.

2. Gautam KK, Kumar S, Raj SK (2021) Current status of major viruses, viroids, and phytoplasma infecting petunia: Diagnosis, characterization, and commercial impact. In: Raj SK, Gaur RK, Yin Z (eds) Virus diseases of ornamental plants. pp 77-91. Springer, Singapore. https://doi.org/10.1007/978-981-16-3919-7_4.

3. Kumari A, Kaur C, Kumar S, Chauhan PS, Raj SK (2021) Current status of three virus genera (Badnavirus, Cucumovirus, and Potyvirus) in Canna species in India. In: Raj S.K., Gaur RK, Yin Z (eds) Virus diseases of ornamental plants. pp 117-126. Springer, Singapore. https://doi.org/10.1007/978-981-16-3919-7_6.

4. Kumar S, Gautam KK, Raj SK (2021) A current overview of viruses of chrysanthemum in India: perspective and prospective. In: Raj S.K., Gaur R.K., Yin Z. (eds) Virus diseases of ornamental plants. pp 231-259. Springer, Singapore. https://doi.org/10.1007/978-981-16-3919-7_13.

5. Gautam KK, Kumar S, Raj SK (2021) Molecular characterization of cucumber mosaic virus strains infecting gerbera cultivars and its disease management. In: Raj SK, Gaur RK, Yin Z (eds) Virus diseases of ornamental plants. pp 301-312. Springer, Singapore. https://doi.org/10.1007/978-981-16-3919-7_16.

6. Raj R, Kumar S, Chauhan PS, Raj SK (2021) Viruses infecting Narcissus tazetta and their possible management. In: Raj SK, Gaur RK, Yin Z (eds) Virus diseases of ornamental plants. pp 313-329. Springer, Singapore. https://doi.org/10.1007/978-981-16-3919-7_17.

7. Kumar S, Kumari A, Raj R, Raj SK. 2020. Management of viral diseases of crops. In: Applied Plant Virology, Elsevier Science. pp 575-592. DOI: 10.1016/B978-0-12-818654-1.00040-2.

8. Kumar S, Srivastava A, Kumari A, Raj R, Jaidi M, Raj SK (2017). Begomovirus Disease Management Measures, Now and Then. In: Begomoviruses: Occurrence and Management in Asia and Africa. Springer, Singapore pp 71-92. DOI: 10.1007/978-981-10-5984-1_5.

9. Raj SK, Kumar S, Kumari A. (2014) Plant Virology: Diagnosis, identification and disease management. In: Plant Taxonomy and Biosystemics, Classical and modern methods. Eds. Rana TS, Nair KN and Upreti DK. 19-39. New India Publishing Agency, New Delhi, India (ISBN-10: 938330541X & ISBN-13: 978-9383305414).

10. Raj SK, Kumar S, Snehi SK. (2014) Recent development in molecular biology and management of plant viruses. In: Diamond Jubilee Commemoration Volume. Research and Development from past decades. Eds. DV Amla, P Nath, DK Upreti, N Singh and KN Nair. 285-303. Army Printing Press, Lucknow, India.

11. Raj SK, Khan MS, Kumar S, Pratap D and Vishnoi R. (2008) Cucumber mosaic virus infecting vegetable and pulse crops, Vol:3 Vegetable and Pulse Crops, (Eds. GP Rao, P Lavakumar, RJ Holguin-Pena). 39-66. Studium Press, Texas, USA (ISBN-10 1933699337 & ISBN-13: 978-1933699332).

12. Raj SK, Kumar S, Pratap D and Singh BP. (2008) Viruses affecting ornamental plants. In: Characterization, Diagnosis and Management of Plant Viruses, Vol:4 Grain, crops and Ornamentals (Eds. GP Rao, C Bragard & Benedicte SM Lebas.). 1-29. Studium Press, Texas, USA (ISBN-10 1933699337 & ISBN-13: 978-1933699332).

Research Scholars:

• Tanu Vishwakarma (ID: 5141) – UGC-JRF (University Grants Commission Junior Research Fellow)
• Archana Rathore (ID: 5144) – DST-Inspire JRF (Department of Science & Technology, Innovation in Science Pursuit for Inspired Research Junior Research Fellow)
• Dilip Kumar Maurya (ID: 5174) – CSIR-JRF (Council of Scientific and Industrial Research Junior Research Fellow)

Project Staff:

• Ritika Dwivedi (ID: 5147) – PA-1 (Project Assistant 1)
• Prabhat Kumar Maurya (ID: 5160) – PA-I (Project Assistant 1)

Plant Molecular Virology Laboratory, CPMB Division,

CSIR-National Botanical Research Institute,

Post Box 436, 1 Rana Pratap Marg, Lucknow-226001 (Uttar Pradesh) India

Mobile: +91-522-2297983; +91-7800115361

E-mail: susheel.kr79@nbri.res.in; susheelnbri@gmail.com