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Control of root system architecture by DEEPER ROOTING 1 increases rice yield under drought conditions

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Title Control of root system architecture by DEEPER ROOTING 1 increases rice yield under drought conditions
 
Creator Uga, Y.
Sugimoto, K
Ogawa, Satoshi
Rane, Jagadish
Ishitani, Manabu
Hara, N
Kitomi, Y
Inukai, Y.
Ono, K
Kanno, N
Inoue, H
Takehisa, H
Motoyama, R
Nagamura, Y
Wu, J.
Matsumoto, T
Takai, T
Okuno, K
Yano, M.
 
Subject oryza sativa
genotypes
drought tolerance
roots
yields
plant breeding
genotipos
tolerancia a la sequía
raíces
rendimiento
fitomejoramiento
genetics
 
Description CIAT- Outstanding Research Publication Award (ORPA) - 2013
The genetic improvement of drought resistance is essential for stable and adequate crop production in drought-prone areas1. Here we demonstrate that alteration of root system architecture improves drought avoidance through the cloning and characterization of DEEPER ROOTING 1 (DRO1), a rice quantitative trait locus controlling root growth angle. DRO1 is negatively regulated by auxin and is involved in cell elongation in the root tip that causes asymmetric root growth and downward bending of the root in response to gravity. Higher expression of DRO1 increases the root growth angle, whereby roots grow in a more downward direction. Introducing DRO1 into a shallow-rooting rice cultivar by backcrossing enabled the resulting line to avoid drought by increasing deep rooting, which maintained high yield performance under drought conditions relative to the recipient cultivar. Our experiments suggest that control of root system architecture will contribute to drought avoidance in crops.
 
Date 2013-09
2014-11-12T13:42:28Z
2014-11-12T13:42:28Z
 
Type Journal Article
 
Identifier Uga, Yusaka; Sugimoto, Kazuhiko; Ogawa, Satoshi; Rane, Jagadish; Ishitani, Manabu; Hara, Naho; Kitomi, Yuka; Inukai, Yoshiaki; Ono, Kazuko; Kanno, Noriko; Inoue, Haruhiko; Takehisa, Hinako; Motoyama, Ritsuko; Nagamura, Yoshiaki; Wu, Jianzhong; Matsumoto, Takashi; Takai, Toshiyuli; Okuno, Kazutoshi; Yano, Masahiro. 2013. Control of root system architecture by DEEPER ROOTING 1 increases rice yield under drought conditions. Nature Genetics. 45:1097-1102.
1061-4036
1546-1718
https://hdl.handle.net/10568/51539
https://doi.org/10.1038/ng.2725
 
Language en
 
Rights Copyrighted; all rights reserved
Limited Access
 
Format p. 1097-1102
 
Publisher Springer Science and Business Media LLC
 
Source Nature Genetics