Genetics, Vol. 155, 899-907, June 2000, Copyright © 2000

SHORT INTEGUMENTS 2 Promotes Growth During Arabidopsis Reproductive Development

Jean Broadhvesta, Shawn C. Bakera, and Charles S. Gassera
a Section of Molecular and Cellular Biology, University of California, Davis, California 95616

Corresponding author: Charles S. Gasser, Section of Molecular and Cellular Biology, University of California, 1 Shields Ave., Davis, CA 95616., csgasser{at}ucdavis.edu (E-mail)

Communicating editor: V. L. CHANDLER

The short integuments 2 (sin2) mutation arrests cell division during integument development of the Arabidopsis ovule and also has subtle pleiotropic effects on both sepal and pistil morphology. Genetic interactions between sin2 and other ovule mutations show that cell division, directionality of growth, and cell expansion represent at least partially independent processes during integument development. Double-mutant analyses also reveal that SIN2 shares functional redundancy with HUELLENLOS in ovule primordium outgrowth and proximal-distal patterning and with TSO1 in promotion of normal morphological development of the four whorls of primary floral organs. All of these observations are consistent with SIN2 being a promoter of growth and cell division during reproductive development, with a primary role in these processes during integument development. On the basis of the floral pleiotropic effects observed in a majority of ovule mutants, including sin2, we postulate a relationship between ovule genes and the evolutionary origin of some processes regulating flower morphology.





This article has been cited by other articles:


Home page
Plant CellHome page
H. Wang, Y. Liu, K. Bruffett, J. Lee, G. Hause, J. C. Walker, and S. Zhang
Haplo-Insufficiency of MPK3 in MPK6 Mutant Background Uncovers a Novel Function of These Two MAPKs in Arabidopsis Ovule Development
PLANT CELL, March 1, 2008; 20(3): 602 - 613.
[Abstract] [Full Text] [PDF]


Home page
DevelopmentHome page
S. O. Park, Z. Zheng, D. G. Oppenheimer, and B. A. Hauser
The PRETTY FEW SEEDS2 gene encodes an Arabidopsis homeodomain protein that regulates ovule development
Development, February 15, 2005; 132(4): 841 - 849.
[Abstract] [Full Text] [PDF]


Home page
J Exp BotHome page
E. Boucheron, J. H. S. Healy, C. Bajon, A. Sauvanet, J. Rembur, M. Noin, M. Sekine, C. Riou Khamlichi, J. A. H. Murray, H. Van Onckelen, et al.
Ectopic expression of Arabidopsis CYCD2 and CYCD3 in tobacco has distinct effects on the structural organization of the shoot apical meristem
J. Exp. Bot., January 1, 2005; 56(409): 123 - 134.
[Abstract] [Full Text] [PDF]


Home page
Plant Physiol.Home page
K. Himanen, C. Reuzeau, T. Beeckman, S. Melzer, O. Grandjean, L. Corben, and D. Inze
The Arabidopsis Locus RCB Mediates Upstream Regulation of Mitotic Gene Expression
Plant Physiology, December 1, 2003; 133(4): 1862 - 1872.
[Abstract] [Full Text]


Home page
Plant CellHome page
D. J. Skinner, S. C. Baker, R. J. Meister, J. Broadhvest, K. Schneitz, and C. S. Gasser
The Arabidopsis HUELLENLOS Gene, Which Is Essential for Normal Ovule Development, Encodes a Mitochondrial Ribosomal Protein
PLANT CELL, December 1, 2001; 13(12): 2719 - 2730.
[Abstract] [Full Text] [PDF]