scholarly journals A CAPS Marker that Distinguishes the Barley Yellow Mosaic Disease Resistance Locus rym1 Derived from Chinese Landrace ‘Mokusekko 3’

2003 ◽  
Vol 109 (2) ◽  
pp. 103-105 ◽  
Author(s):  
Y. Okada ◽  
R. Kanatani ◽  
S. Arai ◽  
K. Ito
Keyword(s):  
Disease Resistance ◽  
Mosaic Disease ◽  
Resistance Locus ◽  
Caps Marker ◽  
Yellow Mosaic Disease ◽  
Chinese Landrace

scholarly journals High-resolution mapping of Rym14Hb, a wild relative resistance gene to barley yellow mosaic disease

2020 ◽  
Author(s):  
Hélène Pidon ◽  
Neele Wendler ◽  
Antje Habekuβ ◽  
Anja Maasberg ◽  
Brigitte Ruge-Wehling ◽  
...  
Keyword(s):  
Mosaic Virus ◽  
Resistance Gene ◽  
Resistance Mechanism ◽  
Mosaic Disease ◽  
Yellow Mosaic Virus ◽  
Linkage Drag ◽  
Resistance Locus ◽  
Wild Relative ◽  
Yellow Mosaic Disease ◽  
Barley Breeding

Abstract Key message We mapped the Rym14Hb resistance locus to barley yellow mosaic disease in a 2Mbp interval. The co-segregating markers will be instrumental for marker-assisted selection in barley breeding. Abstract Barley yellow mosaic disease is caused by Barley yellow mosaic virus and Barley mild mosaic virus and leads to severe yield losses in barley (Hordeum vulgare) in Central Europe and East-Asia. Several resistance loci are used in barley breeding. However, cases of resistance-breaking viral strains are known, raising concerns about the durability of those genes. Rym14Hb is a dominant major resistance gene on chromosome 6HS, originating from barley’s secondary genepool wild relative Hordeum bulbosum. As such, the resistance mechanism may represent a case of non-host resistance, which could enhance its durability. A susceptible barley variety and a resistant H. bulbosum introgression line were crossed to produce a large F2 mapping population (n = 7500), to compensate for a ten-fold reduction in recombination rate compared to intraspecific barley crosses. After high-throughput genotyping, the Rym14Hb locus was assigned to a 2Mbp telomeric interval on chromosome 6HS. The co-segregating markers developed in this study can be used for marker-assisted introgression of this locus into barley elite germplasm with a minimum of linkage drag.

scholarly journals Interaction between Barley Yellow Mosaic Disease-resistance Genes rym1 and rym5, in the Response to BaYMV Strains

2004 ◽  
Vol 54 (4) ◽  
pp. 319-325 ◽  
Author(s):  
Yoshihiro Okada ◽  
Ryouichi Kanatani ◽  
Syouichi Arai ◽  
Kazutoshi Ito
Keyword(s):  
Disease Resistance ◽  
Resistance Genes ◽  
Mosaic Disease ◽  
Disease Resistance Genes ◽  
Yellow Mosaic Disease

scholarly journals High-Density GBS-Based Genetic Linkage Map Construction and QTL Identification Associated With Yellow Mosaic Disease Resistance in Bitter Gourd (Momordica charantia L.)

2021 ◽  
Vol 12 ◽  
Author(s):  
Gurpreet Kaur ◽  
Mamta Pathak ◽  
Deepak Singla ◽  
Abhishek Sharma ◽  
Parveen Chhuneja ◽  
...  
Keyword(s):  
Disease Resistance ◽  
Linkage Map ◽  
Genetic Linkage ◽  
Genetic Linkage Map ◽  
Snp Markers ◽  
Mosaic Disease ◽  
Bitter Gourd ◽  
Phenotypic Variance ◽  
Spring Season ◽  
Yellow Mosaic Disease

Yellow mosaic disease (YMD) in bitter gourd (Momordica charantia) is a devastating disease that seriously affects its yield. Although there is currently no effective method to control the disease, breeding of resistant varieties is the most effective and economic option. Moreover, quantitative trait locus (QTL) associated with resistance to YMD has not yet been reported. With the objective of mapping YMD resistance in bitter gourd, the susceptible parent “Punjab-14” and the resistant parent “PAUBG-6” were crossed to obtain F4 mapping population comprising 101 individuals. In the present study, the genotyping by sequencing (GBS) approach was used to develop the genetic linkage map. The map contained 3,144 single nucleotide polymorphism (SNP) markers, consisted of 15 linkage groups, and it spanned 2415.2 cM with an average marker distance of 0.7 cM. By adopting the artificial and field inoculation techniques, F4:5 individuals were phenotyped for disease resistance in Nethouse (2019), Rainy (2019), and Spring season (2020). The QTL analysis using the genetic map and phenotyping data identified three QTLs qYMD.pau_3.1, qYMD.pau_4.1, and qYMD.pau_5.1 on chromosome 3, 4, and 5 respectively. Among these, qYMD.pau_3.1, qYMD.pau_4.1 QTLs were identified during the rainy season, explaining the 13.5 and 21.6% phenotypic variance respectively, whereas, during the spring season, qYMD.pau_4.1 and qYMD.pau_5.1 QTLs were observed with 17.5 and 22.1% phenotypic variance respectively. Only one QTL qYMD.pau_5.1 was identified for disease resistance under nethouse conditions with 15.6% phenotypic variance. To our knowledge, this is the first report on the identification of QTLs associated with YMD resistance in bitter gourd using SNP markers. The information generated in this study is very useful in the future for fine-mapping and marker-assisted selection for disease resistance.

Genetic analysis of yellow mosaic disease resistance in loofah

2021 ◽  
Author(s):  
Manpreet Kaur ◽  
Budhavaram Varalakshmi ◽  
Manish Kumar ◽  
Eguru Sreenivasa Rao ◽  
Mottaiyan Pitchaimuthu ◽  
...  
Keyword(s):  
Disease Resistance ◽  
Genetic Analysis ◽  
Mosaic Disease ◽  
Yellow Mosaic Disease

​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.

scholarly journals Study of Sterility Mosaic Disease Resistance on Immortal Population in Pigeonpea

2017 ◽  
Vol 6 (9) ◽  
pp. 697-702
Author(s):  
Shourabh Joshi T. Revathi ◽  
G. Umadevi C.V. Sameer Kumar ◽  
G. Anuradha
Keyword(s):  
Disease Resistance ◽  
Mosaic Disease
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