Science Signaling - 台湾科学家鉴定水稻抗水淹基因 幼苗, 水稻, 抗水淹, Science Signaling

基因狗生物论坛快讯：台湾中央研究院分子生物学研究所科学家在最新一期的 Science Signaling 报道了一个激酶相关基因 CIPK15 在水稻幼苗缺氧缺糖应激反应，以期水稻对于抗水淹功能改善中的可能应用。

PDF 摘要：
Coordinated Responses to Oxygen and Sugar Deficiency Allow Rice Seedlings to Tolerate Flooding

Kuo-Wei Lee1,6, Peng-Wen Chen2, Chung-An Lu3, Shu Chen4, Tuan-Hua David Ho5, and Su-May Yu6*

1 Graduate Institute of Life Sciences, National Defense Medical Center, Neihu, Taipei 114, Taiwan, ROC.
2 Institute of Agricultural Biotechnology, National Chiayi University, Chiayi City 600, Taiwan, ROC.
3 Department of Life Sciences, National Central University, Jhongli City, Taoyuan County 320, Taiwan, ROC.
4 Taiwan Agricultural Research Institute, Wufeng, Taichung 413, Taiwan, ROC.
5 Institute of Plant and Microbial Biology, Academia Sinica, Nankang, Taipei 115, Taiwan, ROC.
6 Institute of Molecular Biology, Academia Sinica, Nankang, Taipei 115, Taiwan, ROC.

Abstract: Flooding is a widespread natural disaster that leads to oxygen (O2) and energy deficiency in terrestrial plants, thereby reducing their productivity. Rice is unusually tolerant to flooding, but the underlying mechanism for this tolerance has remained elusive. Here, we show that protein kinase CIPK15 [calcineurin B–like (CBL)–interacting protein kinase] plays a key role in O2-deficiency tolerance in rice. CIPK15 regulates the plant global energy and stress sensor SnRK1A (Snf1-related protein kinase 1) and links O2-deficiency signals to the SnRK1-dependent sugar-sensing cascade to regulate sugar and energy production and to enable rice growth under floodwater. Our studies contribute to understanding how rice grows under the conditions of O2 deficiency necessary for growing rice in irrigated lowlands.

* To whom correspondence should be addressed. E-mail: sumay@imb.sinica.edu.tw

Citation: K.-W. Lee, P.-W. Chen, C.-A. Lu, S. Chen, T.-H. D. Ho, S.-M. Yu, Coordinated Responses to Oxygen and Sugar Deficiency Allow Rice Seedlings to Tolerate Flooding. Sci. Signal. 2, ra61 (2009).

报道：
TAIPEI — A Taiwanese scientist has said her research team has found the gene that allows rice to grow under water and believes the breakthrough could help develop other flood-resistant crops.

The gene, named CIPK15, a type of enzyme, "allows rice seedlings to survive and continue to grow even when submerged in water," said Yu Su-mei, a research fellow at the Institute of Molecular Biology at Taiwan's Academia Sinica.

Yu said she believed the discovery would help breeders generate new rice varieties with greater seedling growth under flood-water, which would save on labour and use of pesticides, potentially benefiting the environment.

The study was published in the current issue of the Washington-based journal Science Signaling.