Plant Physiology Preview
Published on August 26, 2005; 10.1104/pp.105.063495
Received March 30, 2005
Returned for revision June 14, 2005
Accepted June 14, 2005
Interaction of Auxin and ERECTA in Elaborating Arabidopsis Inflorescence Architecture Revealed by the Activation Tagging of a New Member of the YUCCA Family Putative Flavin Monooxygenases
Claire Woodward , Shannon M. Bemis , Emi J. Hill , Shinichiro Sawa , Tomokazu Koshiba , and Keiko U. Torii *
Department of Biology, University of Washington, Seattle, Washington 98195-5325
Department of Biological Sciences, University of Tokyo, Hongo, Tokyo 113-0033, Japan
Department of Biological Sciences, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
* Corresponding author; email: ktorii{at}u.washington.edu.
The aboveground body of higher plants has a modular structure of repeating units, or phytomers. As such, the position, size, and shape of the individual phytomer dictate the plant architecture. The Arabidopsis (Arabidopsis thaliana) ERECTA (ER) gene regulates the inflorescence architecture by affecting elongation of the internode and pedicels, as well as the shape of lateral organs. A large-scale activation-tagging genetic screen was conducted in Arabidopsis to identify novel genes and pathways that interact with the ER locus. A dominant mutant, super1-D, was isolated as a nearly complete suppressor of a partial loss-of-function allele er-103. We found that SUPER1 encodes YUCCA5, a novel member of the YUCCA family of flavin monooxygenases. The activation tagging of YUCCA5 conferred increased levels of free indole acetic acid, increased auxin response, and mild phenotypic characteristics of auxin overproducers, such as elongated hypocotyls, epinastic cotyledons, and narrow leaves. Both genetic and cellular analyses indicate that auxin and the ER pathway regulate cell division and cell expansion in a largely independent but overlapping manner during elaboration of inflorescence architecture.
This article has been cited by other articles:
|
|
|
|
 
S. Barazesh, C. Nowbakht, and P. McSteen
sparse inflorescence1, barren inflorescence1 and barren stalk1 Promote Cell Elongation in Maize Inflorescence Development
Genetics,
May 1, 2009;
182(1):
403 - 406.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
M. Trigueros, M. Navarrete-Gomez, S. Sato, S. K. Christensen, S. Pelaz, D. Weigel, M. F. Yanofsky, and C. Ferrandiz
The NGATHA Genes Direct Style Development in the Arabidopsis Gynoecium
PLANT CELL,
May 1, 2009;
21(5):
1394 - 1409.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
J. I. Kim, A. Sharkhuu, J. B. Jin, P. Li, J. C. Jeong, D. Baek, S. Y. Lee, J. J. Blakeslee, A. S. Murphy, H. J. Bohnert, et al.
yucca6, a Dominant Mutation in Arabidopsis, Affects Auxin Accumulation and Auxin-Related Phenotypes
Plant Physiology,
November 1, 2007;
145(3):
722 - 735.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
N. Yamaguchi, M. Suzuki, H. Fukaki, M. Morita-Terao, M. Tasaka, and Y. Komeda
CRM1/BIG-Mediated Auxin Action Regulates Arabidopsis Inflorescence Development
Plant Cell Physiol.,
September 1, 2007;
48(9):
1275 - 1290.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
Y. Yamamoto, N. Kamiya, Y. Morinaka, M. Matsuoka, and T. Sazuka
Auxin Biosynthesis by the YUCCA Genes in Rice
Plant Physiology,
March 1, 2007;
143(3):
1362 - 1371.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
M.-a. Ohto, S. Hayashi, S. Sawa, A. Hashimoto-Ohta, and K. Nakamura
Involvement of HLS1 in Sugar and Auxin Signaling in Arabidopsis Leaves
Plant Cell Physiol.,
December 1, 2006;
47(12):
1603 - 1611.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
Y. Cheng, X. Dai, and Y. Zhao
Auxin biosynthesis by the YUCCA flavin monooxygenases controls the formation of floral organs and vascular tissues in Arabidopsis.
Genes & Dev.,
July 1, 2006;
20(13):
1790 - 1799.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
