Ethylene-gibberellin signaling underlies adaptation of rice to periodic flooding

Takeshi Kuroha, Keisuke Nagai, Rico Gamuyao, Diane R. Wang, Tomoyuki Furuta, Masanari Nakamori, Takuya Kitaoka, Keita Adachi, Anzu Minami, Yoshinao Mori, Kiyoshi Mashiguchi, Yoshiya Seto, Shinjiro Yamaguchi, Mikiko Kojima, Hitoshi Sakakibara, Jianzhong Wu, Kaworu Ebana, Nobutaka Mitsuda, Masaru Ohme-Takagi, Shuichi YanagisawaMasanori Yamasaki, Ryusuke Yokoyama, Kazuhiko Nishitani, Toshihiro Mochizuki, Gen Tamiya, Susan R. McCouch, Motoyuki Ashikari

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

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, SD1 (SEMIDWARF1), 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 SD1 haplotype amplify a signaling relay in which the SD1 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.

Original languageEnglish
Pages (from-to)181-186
Number of pages6
JournalScience
Volume361
Issue number6398
DOIs
Publication statusPublished - Jul 13 2018
Externally publishedYes

ASJC Scopus subject areas

  • General

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    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., ... Ashikari, M. (2018). Ethylene-gibberellin signaling underlies adaptation of rice to periodic flooding. Science, 361(6398), 181-186. https://doi.org/10.1126/science.aat1577