First published online May 26, 2009; 10.1105/tpc.109.065987
The Plant Cell 21:1512-1525 (2009)
© 2009 American Society of Plant Biologists
OPEN ACCESS ARTICLE
DWARF27, an Iron-Containing Protein Required for the Biosynthesis of Strigolactones, Regulates Rice Tiller Bud Outgrowth[W],[OA]
Hao Lina,1,
Renxiao Wanga,1,2,
Qian Qianb,1,
Meixian Yanb,
Xiangbing Menga,c,
Zhiming Fua,c,
Cunyu Yanc,
Biao Jiangd,
Zhen Sue,
Jiayang Lia,c and
Yonghong Wanga,c,3
a State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
b State Key Laboratory of Rice Biology, China National Rice Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310006, China
c National Center for Plant Gene Research (Beijing), Beijing 100101, China
d Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
e China Agricultural University, Beijing 100094, China
3 Address correspondence to yhwang{at}genetics.ac.cn.
Tillering in rice (Oryza sativa) is one of the most important agronomic traits that determine grain yields. Previous studies on rice tillering mutants have shown that the outgrowth of tiller buds in rice is regulated by a carotenoid-derived MAX/RMS/D (more axillary branching) pathway, which may be conserved in higher plants. Strigolactones, a group of terpenoid lactones, have been recently identified as products of the MAX/RMS/D pathway that inhibits axillary bud outgrowth. We report here the molecular genetic characterization of d27, a classic rice mutant exhibiting increased tillers and reduced plant height. D27 encodes a novel iron-containing protein that localizes in chloroplasts and is expressed mainly in vascular cells of shoots and roots. The phenotype of d27 is correlated with enhanced polar auxin transport. The phenotypes of the d27 d10 double mutant are similar to those of d10, a mutant defective in the ortholog of MAX4/RMS1 in rice. In addition, 2'-epi-5-deoxystrigol, an identified strigolactone in root exudates of rice seedlings, was undetectable in d27, and the phenotypes of d27 could be rescued by supplementation with GR24, a synthetic strigolactone analog. Our results demonstrate that D27 is involved in the MAX/RMS/D pathway, in which D27 acts as a new member participating in the biosynthesis of strigolactones.
This article has been cited by other articles:
|
|
|
|
 
Z. Hu, H. Yan, J. Yang, S. Yamaguchi, M. Maekawa, I. Takamure, N. Tsutsumi, J. Kyozuka, and M. Nakazono
Strigolactones Negatively Regulate Mesocotyl Elongation in Rice during Germination and Growth in Darkness
Plant Cell Physiol.,
July 1, 2010;
51(7):
1136 - 1142.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
M. Umehara, A. Hanada, H. Magome, N. Takeda-Kamiya, and S. Yamaguchi
Contribution of Strigolactones to the Inhibition of Tiller Bud Outgrowth under Phosphate Deficiency in Rice
Plant Cell Physiol.,
July 1, 2010;
51(7):
1118 - 1126.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
K. Minakuchi, H. Kameoka, N. Yasuno, M. Umehara, L. Luo, K. Kobayashi, A. Hanada, K. Ueno, T. Asami, S. Yamaguchi, et al.
FINE CULM1 (FC1) Works Downstream of Strigolactones to Inhibit the Outgrowth of Axillary Buds in Rice
Plant Cell Physiol.,
July 1, 2010;
51(7):
1127 - 1135.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
J. Liang, L. Zhao, R. Challis, and O. Leyser
Strigolactone regulation of shoot branching in chrysanthemum (Dendranthema grandiflorum)
J. Exp. Bot.,
June 1, 2010;
61(11):
3069 - 3078.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
Z. Tian, X. Wang, R. Lee, Y. Li, J. E. Specht, R. L. Nelson, P. E. McClean, L. Qiu, and J. Ma
Artificial selection for determinate growth habit in soybean
PNAS,
May 11, 2010;
107(19):
8563 - 8568.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
C. A. Beveridge, E. A. Dun, and C. Rameau
Pea Has Its Tendrils in Branching Discoveries Spanning a Century from Auxin to Strigolactones
Plant Physiology,
November 1, 2009;
151(3):
985 - 990.
[Full Text]
[PDF]
|
|
|
|
|
