Yellow mosaic symptom caused by the nuclear shuttle protein gene of mungbean yellow mosaic virus is associated with single-stranded DNA accumulation and mesophyll spread of the virus

2016 ◽  
Vol 60 (03) ◽  
pp. 224-233 ◽  
Author(s):  
B. L. KURUBA ◽  
A. P. BUVANI ◽  
K. VELUTHAMBI
Keyword(s):  
Mosaic Virus ◽  
Protein Gene ◽  
Yellow Mosaic Virus ◽  
Mosaic Symptom ◽  
Nuclear Shuttle Protein ◽  
Single Stranded Dna ◽  
Yellow Mosaic Symptom ◽  
Mungbean Yellow Mosaic Virus

scholarly journals Breeding for Enhancing Legumovirus Resistance in Mungbean: Current Understanding and Future Directions

Agronomy ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 622 ◽  
Author(s):  
Chandra Mohan Singh ◽  
Poornima Singh ◽  
Aditya Pratap ◽  
Rakesh Pandey ◽  
Shalini Purwar ◽  
...  
Keyword(s):  
Mosaic Virus ◽  
Seed Quality ◽  
Soil Health ◽  
Mosaic Disease ◽  
Bipartite Begomoviruses ◽  
Yellow Mosaic Virus ◽  
Symbiotic Association ◽  
Detection Techniques ◽  
Vigna Species ◽  
Mungbean Yellow Mosaic Virus

Yellow mosaic disease (YMD) affects several types of leguminous crops, including the Vigna species, which comprises a number of commercially important pulse crops. YMD is characterized by the formation of a bright yellow mosaic pattern on the leaves; in severe forms, this pattern can also be seen on stems and pods. This disease leads to tremendous yield losses, even up to 100%, in addition to deterioration in seed quality. Symptoms of this disease are similar among affected plants; YMD is not limited to mungbean (Vigna radiata L. Wilczek) and also affects other collateral and alternate hosts. In the last decade, rapid advancements in molecular detection techniques have been made, leading to an improved understanding of YMD-causing viruses. Three distinct bipartite begomoviruses, namely, Mungbean Yellow Mosaic India Virus (MYMIV), Mungbean Yellow Mosaic Virus (MYMV), and Horsegram Yellow Mosaic Virus (HgYMV), are known to cause YMD in Vigna spp. Vigna crops serve as an excellent protein source for vegetarians worldwide; moreover, they aid in improving soil health by fixing atmospheric nitrogen through a symbiotic association with Rhizobium bacteria. The loss in the yield of these short-duration crops due to YMD, thus, needs to be checked. This review highlights the discoveries that have been made regarding various aspects of YMD affecting mungbean, including the determination of YMD-causing viruses and strategies used to develop high-yielding YMD-resistant mungbean varieties that harness the potential of related Vigna species through the use of different omics approaches.

​RCA-based Detection of Begomoviruses in Weed Ggenera Associated with Legumes in Southern Karnataka

2021 ◽  
Author(s):  
Sudeep Pandey ◽  
T.R. Girish ◽  
S. Basavaraj ◽  
A.S. Padmaja ◽  
N. Nagaraju
Keyword(s):  
Mosaic Virus ◽  
Rolling Circle Amplification ◽  
Mosaic Disease ◽  
Yellow Mosaic Virus ◽  
Insect Vector ◽  
Weed Species ◽  
Ageratum Conyzoides ◽  
Yellow Mosaic Disease ◽  
Mungbean Yellow Mosaic Virus ◽  
Legume Crops

Background: Yellow mosaic disease (YMD) caused by begomoviruses transmitted through the insect vector Bemisia tabaci poses a serious threat to the production of legume crops. Methods: Season-long surveys were carried out for YMD occurrence in six different legume crops and associated natural weeds both symptomatic and asymptomatic across the districts of southern Karnataka, India. The samples were analyzed through RCA PCR using specific primer pairs. Result: Up to 94.1 per cent YMD incidence was recorded and nine weed species were commonly found associated with legume crops. The weeds viz., Ageratum conyzoides, Alternanthera sessilis, Commelina benghalensis and Euphorbia geniculata were abundantly found in the surveyed regions. The weeds were both symptomatic and asymptomatic. Rolling circle amplification coupled polymerase chain reaction method was employed to detect yellow mosaic virus in asymptomatic weeds. Phylogenetic analysis based on the sequences of PCR amplified products of weeds and symptomatic legumes revealed a close clustering of the weed samples with horsegram yellow mosaic virus, legume yellow mosaic virus and mungbean yellow mosaic virus. Overall, our data suggests the role of weed species associated with legume crops as alternative/collateral hosts of begomoviruses and their role in the epidemiology of yellow mosaic disease.

Virus Vector Relationship of Yellow Mosaic Virus and Whitefly, Bemisia tabaci (Gennadius) in Soybean

2021 ◽  
Author(s):  
M. Swathi ◽  
Neeta Gaur ◽  
Kamendra Singh
Keyword(s):  
Mosaic Virus ◽  
Virus Disease ◽  
Management Strategies ◽  
Virus Transmission ◽  
Virus Vector ◽  
Yellow Mosaic Virus ◽  
Starvation Period ◽  
Mungbean Yellow Mosaic Virus ◽  
Biological Relationship ◽  
Relationship Of

Background: Whitefly is one of the most destructive sucking pest in the tropical and subtropical regions of the world and causing significant crop losses directly by sucking sap from the plants and indirectly through the transmission of viral diseases specifically caused by the genus Begomovirus. The Begomovirus species viz., Mungbean yellow mosaic India virus (MYMIV) and Mungbean yellow mosaic virus (MYMV) are causing yellow mosaic virus disease in soybean, which is transmitted by whiteflies. The disease accounts to 30-70 per cent yield loss and increases up to 80 - 100 per cent during severe incidence. Hence, there is a need for development of integrated pest management strategies against disease and whiteflies, for this the knowledge on virus-vector relationship is required. But, the studies on biological relationship of yellow mosaic virus disease and whitefly in soybean are scarce. At this juncture, considering the importance of disease in soybean, the present investigation was carried out to know the virus -vector relationship of the YMV and whitefly in soybean.Methods: The experiment on virus-vector relationship of yellow mosaic virus and whitefly in soybean was conducted at Department of Entomology, College of Agriculture, G. B. Pant University of Agriculture and Technology, Pantnagar, Uttarakhand during 2016-17. The data on number of whiteflies per plant, acquisition and inoculation access feeding period and pre and post starvation period required for effective transmission of virus was recorded.Result: A single viruliferous whitefly was able to transmit virus and ten viruliferous whiteflies per plant were required for cent per cent transmission of virus. The minimum acquisition access and inoculation access feeding periods required for virus transmission was 0.25h (15 min) each; while the 100 per cent virus transmission was recorded with acquisition and inoculation period of 12h, each. The per cent transmission was increased with the increase of acquisition and inoculation periods. The rate of transmission was positively correlated with pre-acquisition starvation period and negatively correlated with post- acquisition starvation period.

scholarly journals Development of high yielding with durable resistance against Mungbean yellow mosaic virus genotypes in Blackgram

2019 ◽  
pp. 187-193
Author(s):  
Pandiyan M ◽  
Senthil N ◽  
Krishnaveni A ◽  
Sivakumar C ◽  
Singh BB ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Mosaic Virus ◽  
Tamil Nadu ◽  
Durable Resistance ◽  
Yellow Mosaic Virus ◽  
Yield Potential ◽  
Average Height ◽  
Crude Fibre ◽  
Mungbean Yellow Mosaic Virus ◽  
Virus Genotypes

The Blackgram culture VBG04-008 is a cross derivative of blackgram Vamban 3 x Vigna mungo var. silvestris 8 is released as TNAU blackgram VBN (Bg) 7 maturing in 65-70 days with an average height of 17 cm and suited for cultivation under both under rainfed and irrigated conditions. It has a yield potential of 981 Kg per hectare. This culture is resistant to Yellow Mosaic Virus, Powdery mildew and Leaf Curl Virus and less damage of pod borer. It possesses desirable characters like high protein content (21.05%), crude fibre (5.90g/100g) and iron (3.76 mg/100g). Grains are medium sized with black in colour. It is recommended for cultivation in Tamil Nadu, Andhra Pradesh, Karnataka and Orissa. Keywords: VBG04-008; Blackgram; VBN 7 Mung Bean Yellow Mosaic Virus; Powdery mildew-Rainfed; Irrigated

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