RRC ID 6282
Author Hattori Y, Nagai K, Furukawa S, Song XJ, Kawano R, Sakakibara H, Wu J, Matsumoto T, Yoshimura A, Kitano H, Matsuoka M, Mori H, Ashikari M.
Title The ethylene response factors SNORKEL1 and SNORKEL2 allow rice to adapt to deep water.
Journal Nature
Abstract Living organisms must acquire new biological functions to adapt to changing and hostile environments. Deepwater rice has evolved and adapted to flooding by acquiring the ability to significantly elongate its internodes, which have hollow structures and function as snorkels to allow gas exchange with the atmosphere, and thus prevent drowning. Many physiological studies have shown that the phytohormones ethylene, gibberellin and abscisic acid are involved in this response, but the gene(s) responsible for this trait has not been identified. Here we show the molecular mechanism of deepwater response through the identification of the genes SNORKEL1 and SNORKEL2, which trigger deepwater response by encoding ethylene response factors involved in ethylene signalling. Under deepwater conditions, ethylene accumulates in the plant and induces expression of these two genes. The products of SNORKEL1 and SNORKEL2 then trigger remarkable internode elongation via gibberellin. We also demonstrate that the introduction of three quantitative trait loci from deepwater rice into non-deepwater rice enabled the latter to become deepwater rice. This discovery will contribute to rice breeding in lowland areas that are frequently flooded during the rainy season.
Volume 460(7258)
Pages 1026-30
Published 2009-8-20
DOI 10.1038/nature08258
PII nature08258
PMID 19693083
MeSH Adaptation, Physiological / drug effects Adaptation, Physiological / genetics Adaptation, Physiological / physiology* Breeding Ethylenes / metabolism* Ethylenes / pharmacology Floods* Gene Expression Regulation, Plant Genes, Plant / genetics Genes, Plant / physiology Gibberellins / metabolism Onions / cytology Oryza / drug effects Oryza / genetics Oryza / growth & development* Oryza / metabolism* Plant Growth Regulators / metabolism* Plant Growth Regulators / pharmacology Plant Proteins / genetics Plant Proteins / metabolism* Quantitative Trait Loci Signal Transduction Water / metabolism
IF 42.779
Times Cited 464
Arabidopsis / Cultured plant cells, genes rpd00105
Rice W0120 W0106 C9285 T65