PlantLab, Institute of Life Sciences, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy.
Trends Plant Sci. 2013 Jul;18(7):377-81. doi: 10.1016/j.tplants.2013.04.007. Epub 2013 May 21.
Rice (Oryza sativa) varieties differ considerably in their tolerance to submergence, a trait that has been associated with the SUB1A gene. Recently, this gene was found in some wild rice species and landraces, which along with O. sativa, belong to the AA genome type group. On the basis of geographical and historical data, we hypothesize that SUB1A-1 from wild species may have been introgressed into domesticated rice. This introgression probably occurred in the Ganges Basin, with the subsequent spread of the SUB1A-1 to other areas of South Asia due to human migration. The lack of the SUB1A gene in diploid CC genome type wild rice showing submergence-tolerant traits suggests the presence of a different survival mechanism in this genetic group.
水稻品种在耐淹水方面存在显著差异，这种特性与 SUB1A 基因有关。最近，在一些野生稻种和地方品种中发现了这个基因，它们与 O. sativa 一起属于 AA 基因组类型群。基于地理和历史数据，我们假设来自野生种的 SUB1A-1 可能已被渗入到驯化稻中。这种渗入可能发生在恒河流域，随后由于人类迁移，SUB1A-1 扩散到南亚的其他地区。在具有耐淹水特性的二倍体 CC 基因组类型野生稻中缺乏 SUB1A 基因表明，该遗传群体存在不同的生存机制。
