Evaluation of Ancestral Lines of U.S. Soybean Cultivars for Resistance to Four Soybean Viruses

Wang, Y.; Hobbs, H. A.; Hill, Curtis B.; Domier, Leslie L.; Hartman, G. L.; Nelson, Randall L.

doi:10.2135/cropsci2005.0639

Cited by 30 publications

(32 citation statements)

References 51 publications

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“…The results from our screening of soybean germplasm agree with those of Wang et al (2005) who reported that 52 soybean ancestral lines were susceptible, having positive serological results with various degrees of mosaic and leaf distortion, to the inoculation with a subgroup I BPMV isolate. In another study, Zheng et al (2005) did not find resistance in 18 soybean genotypes screened but observed that the severity of mosaic symptoms varied among genotypes and BPMV isolates.…”

Section: Discussionsupporting

confidence: 90%

Differentiation of Bean pod mottle virus isolates based upon host symptoms

2008

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Accessions from Glycine, Phaseolus, and Vigna genera were screened for their reactions to different subgroups of isolates of Bean pod mottle virus (BPMV) in order to establish a differential host system. Screening results indicated that the BPMV isolates differed in pathogenic aggressiveness but not in virulence. No major resistance genes were found in soybean (Glycine max) or G. soja since all screened accessions showed mosaic or necrotic symptoms to BPMV inoculation. However, these accessions expressed differences in severity of symptoms when challenged by various BPMV isolates. The inoculation of G. tomentella accessions did not result in mosaic symptoms, and some accessions did not support systemic infection of some of the isolates. Resistance, presented as a hypersensitive reaction, was observed in some of Phaseolus and Vigna genotypes, and resistant response or susceptibility was stable to all the isolates used in the screening. In conclusion, the selected G. soja genotypes PI 407019, PI 464889A, and PI 464928, and 'Amsoy 71' soybean may help to separate severe (reassortant) from mild isolates of BPMV based upon their phenotypic reactions.

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Section: Discussionsupporting

confidence: 90%

Differentiation of Bean pod mottle virus isolates based upon host symptoms

2008

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“…Tobacco ringspot virus belongs to the Nepoviridae family (Stace-Smith, 1985) of the nepovirus group (Ross, 1987 Cobb)]. Transmission can also occur through infected seeds and mechanical inoculation (Bergson et al, 1964;Hill, 2003;Wang et al, 2005). Seed transmission and TRSV infection can be greater when plants are infected with the virus before fl owering (Athow and Bancroft, 1959;Demski and Harris, 1974).…”

Section: Reactions Of Mid-southern Us Soybean Cultivars To Bean Podmentioning

confidence: 99%

Reactions of Mid‐Southern U.S. Soybean Cultivars to Bean Pod Mottle Virus and Tobacco Ringspot Virus

et al. 2012

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Bean pod mottle virus (BPMV) and Tobacco ringspot virus (TRSV) are two important viral pathogens causing reduction of seed yield and quality in soybean [Glycine max (L.) Merr.]. Various BPMV and TRSV isolates have been observed, but no host resistance has been reported. The objective of this study was to screen a set of modern soybean cultivars for resistance or tolerance to BPMV and TRSV. A total of 303 cultivars currently grown in the mid‐southern United States were screened in the greenhouse for their reactions to BPMV and TRSV. Each cultivar was inoculated with a mild and a virulent isolate of each virus. None of the cultivars tested was resistant to BPMV, but a range of tolerance to this virus was observed among the cultivars. An enzyme‐linked immunosorbent assay (ELISA) confirmed the presence of BPMV in the high and low tolerance cultivars. Tolerance to BPMV is associated with less of a reduction in plant height and biomass on infected plants. Cultivars were classified into four groups, high, moderate, low, and very low tolerance, on the basis of their having exhibited ≤20, 21 to 40, 41 to 60, or >60% of a reduction in plant height and ≤25, 26 to 50, 51 to 75, and >75% plant biomass reduction, respectively. None of the cultivars was resistant to TRSV, and all showed bud blight symptoms by 10 d after inoculation. However, 55 cultivars recovered 5 wk after inoculation, with more than 80% of the plants growing out of the bud blight symptoms and forming new leaves. The recovered plants, although systemically infected, clearly showed tolerance to TRSV at a later stage. These results may be helpful to soybean producers for selecting tolerant cultivars to grow in areas where BPMV and/or TRSV may cause problems in production.

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“…Due to diVerences in climate and soils each main production region can be further divided into smaller subregions (Wang 1991;Pan et al 1994;Wang and Gai 2002). Each region has diVerent growing conditions and locally adapted cultivars (Lu et al 1981;Bu and Pan 1987).…”

mentioning

confidence: 99%

“…The Chinese landraces have also been introduced into other major soybean-producing countries including the United States, Brazil, and Japan (Chang et al 1998). Disease resistant resources such as Peking and PI 88788 for soybean mosaic virus and soybean cyst nematode (Heterodera glycines Ichinohe) resistance have been used in the US for the development of new soybean cultivars (Pantalone et al 2003;Anand et al 2004;Wang et al 2005).…”

mentioning

confidence: 99%

Genetic structure and diversity of cultivated soybean (Glycine max (L.) Merr.) landraces in China

et al. 2008

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The Chinese genebank contains 23,587 soybean landraces collected from 29 provinces. In this study, a representative collection of 1,863 landraces were assessed for genetic diversity and genetic diVerentiation in order to provide useful information for eVective management and utilization. A total of 1,160 SSR alleles at 59 SSR loci were detected including 97 unique and 485 low-frequency alleles, which indicated great richness and uniqueness of genetic variation in this core collection. Seven clusters were inferred by STRUCTURE analysis, which is in good agreement with a neighbor-joining tree. The cluster subdivision was also supported by highly signiWcant pairwise F st values and was generally in accordance with diVerences in planting area and sowing season. The cluster HSuM, which contains accessions collected from the region between 32.0 and 40.5°N, 105.4 and 122.2°E along the central and downstream parts of the Yellow River, was the most genetically diverse of the seven clusters. This provides the Wrst molecular evidence for the hypotheses that the origin of cultivated soybean is the Yellow River region. A high proportion (95.1%) of pairs of alleles from diVerent loci was in LD in the complete dataset. This was mostly due to overall population structure, since the number of locus pairs in LD was reduced sharply within each of the clusters compared to the complete dataset. This shows that population structure needs to be accounted for in association studies conducted within this collection. The low value of LD within the clusters can be seen as evidence that much of the recombination events in the past have been maintained in soybean, Wxed in homozygous self-fertilizing landraces.

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Evaluation of Ancestral Lines of U.S. Soybean Cultivars for Resistance to Four Soybean Viruses

Cited by 30 publications

References 51 publications

Differentiation of Bean pod mottle virus isolates based upon host symptoms

Differentiation of Bean pod mottle virus isolates based upon host symptoms

Reactions of Mid‐Southern U.S. Soybean Cultivars to Bean Pod Mottle Virus and Tobacco Ringspot Virus

Genetic structure and diversity of cultivated soybean (Glycine max (L.) Merr.) landraces in China

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