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Author Kuroha T., Nagai K., Gamuyao R., Wang D.R., Furuta T., Nakamori M., Kitaoka T., Adachi K., Minami A., Mori Y., Mashiguchi K., Seto Y., Yamaguchi S., Kojima M., Sakakibara H., Wu J., Ebana K., Mitsuda N., Ohme-Takagi M., Yanagisawa S., Yamasaki M., Yokoyama R., Nishitani K., Mochizuki T., Tamiya G., McCouch S.R., Ashikari M.
Title Ethylene-gibberellin signaling underlies adaptation of rice to periodic flooding.
Most plants do poorly when flooded. Certain rice varieties, known as deepwater rice, survive periodic flooding and consequent oxygen deficiency by activating internode growth of stems to keep above the water. Here, we identify the gibberellin biosynthesis gene, <i>SD1</i> (<i>SEMIDWARF1</i>), whose loss-of-function allele catapulted the rice Green Revolution, as being responsible for submergence-induced internode elongation. When submerged, plants carrying the deepwater rice-specific <i>SD1</i> haplotype amplify a signaling relay in which the <i>SD1</i> gene is transcriptionally activated by an ethylene-responsive transcription factor, OsEIL1a. The SD1 protein directs increased synthesis of gibberellins, largely GA4, which promote internode elongation. Evolutionary analysis shows that the deepwater rice-specific haplotype was derived from standing variation in wild rice and selected for deepwater rice cultivation in Bangladesh.
Journal Science
Country unknown
Volume 361(6398)
Pages 181-186
Year 2018
PubMed ID 30002253
PubMed Central ID -
DOI 10.1126/science.aat1577
Gene EIL1 SD1
Strain Wild Core Collection -
Induced Mutation Lines(NIG Collection) -
Sterile Seed Strain -
Lethal Embryo
Mutantion Strain
Stages in Each Organ
- Muant Lines (Gene)
Cultivated Varieties(NIG Collection) -
Stages in Each Organ -