Emerging Problems of Tospoviruses (Bunyaviridae) and their Management in the Indian Subcontinent

Mandal, Bikash; Jain, Rakesh; Krishnareddy, M.; Kumar, N. K. Krishna; Ravi, K. S.; Pappu, H. R.

doi:10.1094/pdis-06-11-0520

Cited by 123 publications

(63 citation statements)

References 47 publications

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“…Iris yellow spot virus (IYSV), genus Tospovirus, family Bunyaviridae, is an economically important viral pathogen of onion in many onion-growing areas of the world and is transmitted by onion thrips (Thrips tabaci) [3,4]. Recently, IYSV spread rapidly in several onion-growing countries all over the world.…”

Section: Introductionmentioning

confidence: 99%

Occurrence of iris yellow spot virus from onion crops in Egypt

et al. 2014

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Iris yellow spot virus (IYSV) is a infects onion bulb and seed crops in many countries including Egypt. Results of the mechanical inoculation reveled that, small chlorotic lesions and systemic necrosis were observed on both Nicotiana benthamiana and Datura stramonium after 10 days, while there were no symptoms were appeared on the onion plant. The viral biological transmission with Thrips tabaci was highly reported to be efficiently for virus transmitted. Our results confirmed the presentence of viruslike particles of a Tospovirus infected onion leaf using transmission electron microscopy. Both of sequence and phylogenetic analysis of N gene revealed that our viral isolate is IYSV with 95 % identity with reported Israel isolate. The sequence of N gene had three motifs: casein kinase II Phosphorylation site, N-myristoylation site and protein kinase C phosphorylation site. These motifs are involved in regulation, activity and stability of IYSV. To our knowledge, this is the first molecular characterization of IYSV in Egypt.

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Section: Introductionmentioning

confidence: 99%

Occurrence of iris yellow spot virus from onion crops in Egypt

et al. 2014

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“…Highest disease incidence on tomato fields in surveyed areas were found surrounded by the alternate host crop such as Brinjal, Chilli and Groundnut which might have served as source of inoculum. To support this, several reviews indicated the occurrence of virus incidence on Brinjal (Mandal et al, 2012), Chilli (Krishna Reddy et al, 2008 Groundnut (Mukund, 1996;Gupta and Lokesh Kumar Shukla, 2011;Gopal et al, 2011), Onion andGreen gram,( Prasada Rao et al, 2003;Manoj Kumar et al, 2013 ;Bhat et al, 2001 ;Ho Xuan Thien et al, 2003). Beside this, the other probable reason for higher incidence due to sequential and mono cropping of tomato may also have positive influence on the occurrence of the disease.…”

Section: Resultsmentioning

confidence: 99%

“…The severity and incidence of bud blight disease of tomato caused by PBNV is being increasing in the recent year in Karnataka on tomato (Manjunatha et al 2010;Ambika, 2011). Besides, several reviews indicated the occurrence of Peanut bud necrosis virus incidence on wide host crops viz., Brinjal (Mandal et al, 2012), Chilli (Krishna Groundnut (Mukund, 1996;Gupta and Lokesh Kumar Shukla, 2011;Gopal et al, 2011), Onion andGreen gram,( Prasada Rao et al, 2003;Manoj Kumar et al, 2013 ;Bhat et al, 2001 ;Ho Xuan Thien et al, 2003). But till data, no literature is available on GPS based distribution and intensity of bud blight disease of tomato in potential crop growing areas of Northern Eastern Karnataka, spatial variability of disease have not been studied.…”

Section: Introductionmentioning

confidence: 99%

Magnitude of bud blight disease of tomato caused by Peanut bud necrosis virus (PBNV) in Northern Eastern Karnataka

Vinaykumar

Govindappa

Aswathanarayana

et al. 2018

JANS

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Abstract:The present study on magnitude and spatial distribution of bud blight disease of tomato caused by Peanut bud necrosis virus in major tomato growing area of North Eastern Karnataka through GPS approach during 2014-15, revealed that disease was found to occur at all the stages of the crop with characteristic symptoms such as necrotic rings with green or yellow hallow spots on leaves, later tip necrosis and die back. Further, presence of longitudinal brown necrotic streaks on petioles, stem and characteristic brown ring and chlorotic ring spots on green and red ripened tomatoes respectively. GPS based survey indicated that the % disease incidence varied from location to location (spatial variation), with the mean incidence ranging from 14.52 to 62.13 per cent. Among the six districts, highest incidence of 62.13 per cent was recorded in Kalaburgi district followed by Raichur, Bidar, Yadgir and Koppal with 60.35, 57.96, 45.68 and 37.13 per cent incidence, respectively and the least disease incidence of 14.52 per cent was recorded in Ballari district. The GPS maps plotted based on PDI scale (0-4) represents high risk areas of the disease in North Eastern Karnataka and higher magnitude of disease was recorded in many of the location surveyed were the tomato fields surrounded by alternate hosts of PBNV. The study signifies PBNV diagnostic symptoms and its prevalence in North Eastern Karnataka.

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“…Besides onions, it is known to infest around 300 plant species, including economically important crops such as tobacco, leek, cabbage, pea, melon, lettuce, potato, tomato, carnation (Diaz‐Montano, Fuchs, Nault, Fail, & Shelton, 2011; Lewis, 1997; Mandal et al., 2012). Thrips tabaci is also a vector of two viral pathogens, Iris yellow spot virus (IYSV) (Srinivasan et al., 2012) and Tomato spotted wilt virus (TSWV) (Pittman, 1927) causing significant disease around the world (German, Ullman, & Moyer, 1992).…”

Section: Introductionmentioning

confidence: 99%

Genome‐wide identification, expression profiling, and target gene analysis of microRNAs in the Onion thrips, Thrips tabaci Lindeman (Thysanoptera: Thripidae), vectors of tospoviruses (Bunyaviridae)

Rebijith

Asokan

Hande

et al. 2018

Ecology and Evolution

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Thrips tabaci Lindeman is an important polyphagous insect pest species estimated to cause losses of more than U.S. $1 billion worldwide annually. Chemical insecticides are of limited use in the management of T. tabaci due to the thigmokinetic behavior and development of resistance to insecticides. There is an urgent need to find alternative management strategies. Small noncoding RNAs (sncRNAs) especially microRNAs (miRNAs) hold great promise as key regulators of gene expression in a wide range of organisms. MiRNAs are a group of endogenously originated sncRNA known to regulate gene expression in animals, plants, and protozoans. In this study, we explored these RNAs in T. tabaci using deep sequencing to provide a basis for future studies of their biological and physiological roles in governing gene expression. Apart from snoRNAs and piRNAs, our study identified nine novel and 130 known miRNAs from T. tabaci. Functional classification of the targets for these miRNAs predicted that majority are involved in regulating transcription, translation, signal transduction and genetic information processing. The higher expression of few miRNAs (such as tta‐miR‐281, tta‐miR‐184, tta‐miR‐3533, tta‐miR‐N1, tta‐miR‐N7, and tta‐miR‐N9) in T. tabaci pupal and adult stages reflected their possible role in larval and adult development, metamorphosis, parthenogenesis, and reproduction. This is the first exploration of the miRNAome in T. tabaci, which not only provides insights into their possible role in insect metamorphosis, growth, and development but also offer an important resource for future pest management strategies.

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Emerging Problems of Tospoviruses (Bunyaviridae) and their Management in the Indian Subcontinent

Cited by 123 publications

References 47 publications

Occurrence of iris yellow spot virus from onion crops in Egypt

Occurrence of iris yellow spot virus from onion crops in Egypt

Magnitude of bud blight disease of tomato caused by Peanut bud necrosis virus (PBNV) in Northern Eastern Karnataka

Genome‐wide identification, expression profiling, and target gene analysis of microRNAs in the Onion thrips, Thrips tabaci Lindeman (Thysanoptera: Thripidae), vectors of tospoviruses (Bunyaviridae)

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