Author:
Li Xiaoming,Tang Yongsheng,Wang Lanfen,Chang Yujie,Wu Jing,Wang Shumin
Abstract
Abstract
Background
Common bean (Phaseolus vulgaris L.) is an important agricultural product with large nutritional value, and the insect pest Acanthoscelides obtectus (Say) seriously affects its product quality and commodity quality during storage. Few researches on genes of bruchid resistance have investigated in common bean cultivars.
Results
In this study, a bruchid-resistant cultivar black kidney bean and a highly susceptible accession Longyundou3 from different gene banks were crossed to construct a recombinant inbred line population. The genetic analysis indicated a quantitative inheritance of the bruchid resistance trait controlled by polygenes. A high-density genetic map of a total map distance of 1283.68 cM with an average interval of 0.61 cM between each marker was constructed using an F6 population of 157 recombinant inbred lines. The map has 3106 bin markers, containing 2,234,769 SNPs. Using the high-density genetic map, a new quantitative trait locus for the resistance to Acanthoscelides obtectus was identified on chromosome 6. New molecular markers based on the candidate region were developed, and this locus was further delimited to an interval of 122.3 kb between SSR markers I6–4 and I6–16 using an F2 population. This region comprised five genes. Phvul.006G003700, which encodes a bifunctional inhibitor, may be a potential candidate gene for bruchid resistance. Sequencing analysis of candidate gene identified a 5 bp insertion-deletion in promoter of gene Phvul.006G003700 between two parents. Expression analysis of candidate gene revealed that the expression level of Phvul.006G003700 in bruchid-resistant parent was markedly higher than that in bruchid-susceptible parent both in dry seeds and leaves.
Conclusions
A high-density genetic linkage map was constructed utilizing whole-genome resequencing and one new QTL for bruchid resistance was identified on chromosome 6 in common bean cultivar. Phvul.006G003700 (encoding a bifunctional inhibitor) may be a potential candidate gene. These results may form the basis for further research to reveal the bruchid resistance molecular mechanism of common bean.
Publisher
Springer Science and Business Media LLC
Reference90 articles.
1. Wu J, Wang L, Fu J, Chen J, Wei S, Zhang S, et al. Resequencing of 683 common bean genotypes identifies yield component trait associations across a north–south cline. Nat Genet. 2020;52(1):118–25.
2. Wu L, Chang Y, Wang L, Wu J, Wang S. Genetic dissection of drought resistance based on root traits at the bud stage in common bean. Theor Appl Genet. 2021;134(4):1047–61.
3. Bitocchi E, Rau D, Bellucci E, Rodriguez M, Murgia ML, Gioia T, et al. Beans (Phaseolus ssp.) as a model for understanding crop evolution. Front Plant Sci. 2017;8:722.
4. Myers JR, Kmiecik K. Common bean: economic importance and relevance to biological science research. In: Pérez de la Vega M, Santalla M, Marsolais F, editors. The common bean genome. Cham: Springer International Publishing; 2017. p. 1–20.
5. Broughton WJ, Hernández G, Blair M, Beebe S, Gepts P, Vanderleyden J. Beans (Phaseolus spp.) – model food legumes. Plant and Soil. 2003;252:55–128.
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