http://oar.icrisat.org/id/eprint/11599 2020-09-06T07:06:18Z info:eu-repo/semantics/descriptiveMetadata http://oar.icrisat.org/11599/ Genome-wide identification of meiotic recombination hot spots detected by SLAF in peanut (Arachis hypogaea L.) Wang, X Xu, P Ren, Y Yin, L Li, S Wang, Y Shi, Y Li, H Cao, X Chi, X Yu, T Pandey, M K Varshney, R K Yuan, M Groundnut Oilseeds Genetics and Genomics Food and Nutrition Recombination hot spots (RHP), caused by meiosis, are considered to play crucial roles in improvement and domestication of crop. Cultivated peanut is one of the most important rich-source of oil and protein crops. However, no direct scale of recombination events and RHP have been estimated for peanut. To examine the scale of recombination events and RHP in peanut, a RIL population with 200 lines and a natural population with 49 cultivars were evaluated. The precise integrated map comprises 4837 SLAF markers with genetic length of 2915.46 cM and density of 1.66 markers per cM in whole genome. An average of 30.0 crossover (2.06 cMMb− 1) events was detected per RIL plant. The crossover events (CE) showed uneven distribution among B sub-genome (2.32) and A sub-genome (1.85). There were 4.34% and 7.86% of the genome contained large numbers of CE (> 50 cMMb− 1) along chromosomes in F6 and natural population, respectively. High density of CE regions called RHP, showed negative relationship to marker haplotypes conservative region but positive to heatmap of recombination. The genes located within the RHP regions by GO categories showed the responding of environmental stimuli, which suggested that recombination plays a crucial role in peanut adaptation to changing environments Nature Research 2020-08 Article PeerReviewed application/pdf en http://oar.icrisat.org/11599/1/s41598-020-70354-x.pdf Wang, X and Xu, P and Ren, Y and Yin, L and Li, S and Wang, Y and Shi, Y and Li, H and Cao, X and Chi, X and Yu, T and Pandey, M K and Varshney, R K and Yuan, M (2020) Genome-wide identification of meiotic recombination hot spots detected by SLAF in peanut (Arachis hypogaea L.). Scientific Reports (TSI), 10 (1). ISSN 2045-2322 https://doi.org/10.1038/s41598-020-70354-x doi:10.1038/s41598-020-70354-x info:eu-repo/semantics/objectFile info:eu-repo/semantics/humanStartPage