Environmental Association Analyses Identify Candidates for Abiotic Stress Tolerance in Glycine soja, the Wild Progenitor of Cultivated Soybeans.
Environmental Association Analyses Identify Candidates for Abiotic Stress Tolerance in Glycine soja, the Wild Progenitor of Cultivated Soybeans.
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DOI：
10.1534/g3.116.026914
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发表时间：
2016-04-07
期刊：
影响因子：
--
通讯作者：
Morrell PL
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文献类型：
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作者：
Anderson JE;Kono TJ;Stupar RM;Kantar MB;Morrell PL
一个物种范围内的自然种群表现出种群结构，这是由于中性过程，如突变的局部起源和迁移限制。选择也作用于基因座的子集，有助于局部适应。了解适应当地环境条件的遗传基础是基础生物学研究的一个基本目标。当应用于作物野生近缘种时，同样的研究提供了识别适应性遗传变异的机会，这些遗传变异可用于培育更好地适应新环境或不断变化的环境的作物。本研究探讨了一个迁地保护收集，美国农业部种质资源收集，基因分型在32,416个SNP，以确定人口结构和测试与生物气候和生物物理变量的关联在大豆，野生祖先的大豆（大豆）。检测到了puploid对非生物胁迫适应的候选位点。在这种非原位收集中鉴定潜在的适应性变体可能允许更有针对性地使用种质资源。
Natural populations across a species range demonstrate population structure owing to neutral processes such as localized origins of mutations and migration limitations. Selection also acts on a subset of loci, contributing to local adaptation. An understanding of the genetic basis of adaptation to local environmental conditions is a fundamental goal in basic biological research. When applied to crop wild relatives, this same research provides the opportunity to identify adaptive genetic variation that may be used to breed for crops better adapted to novel or changing environments. The present study explores an ex situ conservation collection, the USDA germplasm collection, genotyped at 32,416 SNPs to identify population structure and test for associations with bioclimatic and biophysical variables in Glycine soja, the wild progenitor of Glycine max (soybean). Candidate loci were detected that putatively contribute to adaptation to abiotic stresses. The identification of potentially adaptive variants in this ex situ collection may permit a more targeted use of germplasm collections.