Rice domestication by reducing shattering
Rice domestication by reducing shattering
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DOI：
10.1126/science.1123604
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发表时间：
2006-03-31
期刊：
影响因子：
56.9
通讯作者：
Sang, T
中科院分区：
文献类型：
--
作者：
Li, CB;Zhou, AL;Sang, T
作物驯化通常始于选择不会自然脱落成熟果实或种子的植物。导致谷物驯化的谷粒破碎的减少涉及影响大的遗传位点。然而，这一关键驯化转变的分子基础仍然未知。在这里，我们表明，在预测的DNA结合结构域编码的一个基因，以前未知的功能的氨基酸取代的人的选择是主要负责减少水稻驯化的谷粒破碎。这种替换破坏了控制谷粒与花梗分离的分离层正常发育所必需的基因功能。
Crop domestication frequently began with the selection of plants that did not naturally shed ripe fruits or seeds. The reduction in grain shattering that led to cereal domestication involved genetic loci of large effect. The molecular basis of this key domestication transition, however, remains unknown. Here we show that human selection of an amino acid substitution in the predicted DNA binding domain encoded by a gene of previously unknown function was primarily responsible for the reduction of grain shattering in rice domestication. The substitution undermined the gene function necessary for the normal development of an abscission layer that controls the separation of a grain from the pedicel.