Status of mungbean yellow mosaic disease of french bean in different agro-climatic zones of Karnataka

Archith, C.; Devappa, V.; Fakrudin, B.; Bhut, A. S.; Vishnuvardhana, .

doi:10.5958/2395-146x.2017.00029.1

Cited by 2 publications

(3 citation statements)

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“…The available literature on the survey of YMD also reveals its ubiquitous presence all over the country (Nariani, 1960; Nene, 1978). Further, Archith et al (2017) carried out similar survey work on YMD of french bean and recorded disease incidence ranging from 5.88 to 28.54 per cent. The reason behind this variation in the occurrence of YMD in different places may be due to weather parameters like temperature, relative humidity, vector population, feeding behavior and infected surrounding crops that help in the transmission of the virus and also resistant cultivars.…”

Section: Discussionmentioning

confidence: 99%

“…Apart from these, other viruses which are reported on legume crops are tobacco curly shoot virus (TbCSV) (Venkataravanappa et al, 2012), french bean leaf curl virus (FbLCV) (Kamaal et al, 2013), tomato leaf curl Gujarat virus (ToLCGV) (Kamaal et al, 2015) and tomato leaf curl Joydebpur virus (ToLCJV) (Ansar et al, 2019). In recent years, cultivation of pole bean in India has suffered serious losses due to yellow mosaic disease (YMD) (Archith et al, 2017). Based on the CP gene sequence analysis, YMD of pole bean was confirmed to be associated with begomovirus infection (Jeevan et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

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Genetic diversity and evidence of recombination ofHorsegram yellow mosaic virusinfecting pole bean (Phaseolus vulgarisL.) from South India

Bindu

Hiremath

et al. 2023

Preprint

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The yellow mosaic disease (YMD) caused by begomoviruses is a major constraint for the production of pole bean (Phaseolus vulgaris L.) in India. Survey was carried out in the eastern dry zone of Karnataka during 2019-20 to record the incidence of yellow mosaic disease in pole bean which revealed the ubiquitous prevalence of YMD in pole bean ranging from 6.02 to 80.74 per cent. Leaf samples collected (symptomatic and asymptomatic) were subjected for begomovirus detection using specific primers. Twelve samples, representing all the 12 taluks in the surveyed region were considered for full genome amplification by RCA, cloned and sequenced. Genome length of 12 current isolates ranged from 2718 - 2744 and 2668 - 2671 nucleotides for DNA-A and DNA-B, respectively. Sequence analysis using Sequence Demarcation Tool (SDT) showed >91 per cent nucleotide identity of current isolates (DNA-A) with other horsegram yellow mosaic virus (HgYMV) isolates available in the GenBank. As per existing ICTV criteria, all the current isolates can be considered as strains of HgYMV. Further, DNA-B associated with all the 12 isolates also shared >91 per cent nucleotide identity with DNA-B of HgYMV isolates, indicating absence of component re-assortment in HgYMV. Variation in the pairwise nucleotide identity and phylogenetic analysis confirmed the existence of new strains within the current HgYMV isolates. GC plot analysis reveals potential recombination in the low GC-rich regions. Further, recombination breakpoint analysis indicated intra-species recombination in both DNA-A and DNA-B, which might have driven the origin of new strains in HgYMV. This is the first comprehensive study on begomoviruses isolates associated with the yellow mosaic disease of pole bean based on complete genome sequencing in the world.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Genetic diversity and evidence of recombination ofHorsegram yellow mosaic virusinfecting pole bean (Phaseolus vulgarisL.) from South India

Bindu

Hiremath

et al. 2023

Preprint

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“…High disease incidence recorded in some villages of Prakasam district might be attributed to the cultivation of blackgram as preceding crop that might have resulted in higher whitefly population. Further, large scale cultivation of susceptible local varieties could also be ascribed to high disease incidence (Archith et al, 2017). Prevalence of YMV susceptible weed hosts in Prakasam district might have helped in the perpetuation of the virus during offseason.…”

Section: Roving Surveymentioning

confidence: 99%

Survey for Yellow Mosaic Disease Occurring on Blackgram [Vigna mungo (L.) Hepper] and Weed Hosts in Four Major Blackgram Growing Districts of Andhra Pradesh and Characterization of Associated Viruses using Coat Protein Gene

Chowdary¹,

Kumar²,

Varma³

et al. 2021

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Background: Yellow mosaic disease (YMD) caused by Yellow mosaic virus is one of the major constraints in the pulse production in Andhra Pradesh (A.P.) due to fast evolution of strains, like Mungbean yellow mosaic India virus (MYMIV). Keeping this in view, a survey was undertaken in the major blackgram growing districts of A.P. to know the YMD incidence in blackgram and weed hosts and were characterized based on genetic features by comparing with other YMV isolates from different hosts and locations across the world. Methods: Roving survey was conducted during rabi 2019-20 in major blackgram growing districts of A.P. viz., Krishna, Guntur, West Godavari and Prakasam districts for YMD incidence. Blackgram plants showing characteristic symptoms were collected as representative samples from each mandal along with the suspected weed plants and were subjected to amplification using coat protein (CP) specific primers followed by molecular characterization. Phylogenetic tree for coat protein (CP) gene was constructed using aligned sequences with 1000 bootstrap replicates following neighbor-joining phylogeny. Result: Out of the four districts surveyed, the highest disease incidence was recorded at Machavaram village of Prakasam district (43.22%), whereas least disease incidence was recorded at Chinaganjam village of Praksam district (2.4%). Six weeds viz., Ageratum conyzoides, Amaranthus viridis, Parthenium hysterophporus, Vigna trilobata, Abelmoscus moschatus, Desmodium laxiflorum have showed positive result in PCR amplification with MYMIV specific coat protein primers. Four isolates from blackgram samples and two from weed plants shared 94.85 to 99.58% nucleotide identity among themselves.

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Status of mungbean yellow mosaic disease of french bean in different agro-climatic zones of Karnataka

Cited by 2 publications

References 0 publications

Genetic diversity and evidence of recombination ofHorsegram yellow mosaic virusinfecting pole bean (Phaseolus vulgarisL.) from South India

Genetic diversity and evidence of recombination ofHorsegram yellow mosaic virusinfecting pole bean (Phaseolus vulgarisL.) from South India

Survey for Yellow Mosaic Disease Occurring on Blackgram [Vigna mungo (L.) Hepper] and Weed Hosts in Four Major Blackgram Growing Districts of Andhra Pradesh and Characterization of Associated Viruses using Coat Protein Gene

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