Molecular Breeding ( IF 3.1 ) Pub Date : 2020-04-14 , DOI: 10.1007/s11032-020-01122-y Takeshi Kuroha , Motoyuki Ashikari
Rice is one of most important crops in the world and is also the most advanced crop for breeding among cereal crops. Generally, rice is grown in lowland and flood-prone areas due to its ability to survive in semiaquatic environments. To adapt to excess water conditions, rice has developed specialized anatomical and morphological traits such as aerenchyma, radial oxygen loss barriers, adventitious roots, and leaf gas film formation ability. However, these strategies are insufficient for survival under continuous complete submergence, which leads to death due to oxygen starvation. To overcome prolonged submergence, some Asian rice varieties have further developed additional traits such as aerobic germination, quiescence of leaf elongation in response to flash floods, and internode elongation under periodic flooding. In this review, we describe recent progress in the understanding of the various molecular mechanisms and genetic factors regulating flooding tolerance in rice.
中文翻译:
水稻浸水耐性的分子机制及未来的改进
水稻是世界上最重要的作物之一,也是谷物作物中最先进的育种作物。通常,稻米由于其在半水环境中生存的能力而生长在低地和易发生洪水的地区。为了适应过量的水分条件,水稻已经开发出专门的解剖学和形态学特征,例如通气组织,径向氧损失屏障,不定根和叶气膜形成能力。然而,这些策略不足以在连续完全浸没下生存,这由于缺氧而导致死亡。为了克服长时间的淹没,一些亚洲水稻品种进一步开发了其他特性,例如有氧萌发,响应山洪潮而使叶片伸长静止以及在周期性洪水下节间伸长。在这篇评论中