[Submergence tolerance and Sub1 locus in rice].
Great progresses have been made in understanding of both submergence tolerance in rice (Oryza sativa L.) and the molecular mechanism of tolerance over 4 years. Tolerance of rice plants to submergence is controlled by Submergence-1 (Sub1) locus. Sub1 regulates ethylene- and GA-mediated responsiveness, leading to restriction in carbohydrate consumption and quiescence in shoot elongation during submergence and subsequently causing submergence tolerance. This article reviewed two strategies adopted by rice plants to cope with flooding stress, major physiological factors affecting submergence tolerance, and physical mapping of Sub1 locus, as well as the mechanisms of submergence tolerance, and assessed the prospects of the use of Sub1 in hybrid rice production.
Xiong
Huai-Yang
HY
Key Labarotory of MOE for Plant Developmental Biology, College of Life Science, Wuhan University, Wuhan 430072, China. xionghy1971@yahoo.com.cn
Li
Yang-Sheng
YS
D000222:Adaptation, Physiological; D002874:Chromosome Mapping; D005030:Ethylenes / Q000378:metabolism; D018506:Gene Expression Regulation, Plant / Q000235:genetics / Q000502:physiology; D017343:Genes, Plant / Q000502:physiology*; D007101:Immersion; D012275:Oryza / Q000235:genetics* / Q000502:physiology; D014157:Transcription Factors; D014867:Water / Q000502:physiology*
D005030:Ethylenes; D014157:Transcription Factors; D014867:Water; C036216:ethylene