This Article Full Text Full Text (PDF) All Versions of this Article: 133/2/580    most recent pp.103.027052v1 Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in Web of Science Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via CrossRef Citing Articles via Web of Science (13) Citing Articles via Google Scholar Google Scholar Articles by Zhu, Y.-Q. Articles by Chen, X.-Y. Search for Related Content PubMed PubMed Citation Articles by Zhu, Y.-Q. Articles by Chen, X.-Y. Agricola Articles by Zhu, Y.-Q. Articles by Chen, X.-Y.

CELL BIOLOGY AND SIGNAL TRANSDUCTION

An ATP-Binding Cassette Transporter GhWBC1 from Elongating Cotton Fibers¹

National Key Laboratory of Plant Molecular Genetics, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 300 Fenglin Road, Shanghai 200032, People's Republic of China

We have isolated a cDNA (GhWBC1) from cotton (Gossypium hirsutum) that encodes an ATP-binding cassette transporter of the WBC (white/brown complex) subfamily. Members of this subfamily are half-sized transporters and are reported to mediate lipid and drug excretion in human (Homo sapiens). GhWBC1 is highly expressed in developing fiber cells, but transcripts were also detectable in other tissues except roots. The transcript level peaked in rapidly expanding fibers from 5 to 9 DPA and then decreased. The GhWBC1 expression was weak in fiber cells of an li (ligon-lintless) mutant, which is defective in fiber cell elongation. These data indicate that GhWBC1 gene expression correlates with cotton fiber elongation. Transient expression of enhanced green fluorescence protein-GhWBC1 fusion protein in onion (Allium cepa) epidermal cells revealed plasma membrane localization. The GhWBC1 cDNA driven by a constitutive 35S promoter was introduced into Arabidopsis. About 13% of the transformants produced short siliques (SSs), whereas others had normal siliques (long siliques [LSs]). In siliques of SS lines, most embryos were severely shriveled, and only several seeds per silique could be found at maturity. The transgene expression level was higher in SS lines than in LS lines. Expression of AtWBC11, the closest homolog of GhWBC1 in Arabidopsis, was not altered in either SS or LS transgenic plants examined. These data suggest that GhWBC1 interferes with substance translocation that is required for Arabidopsis seed and silique development. Characterization of Arabidopsis WBC members, particularly AtWBC11, will help to dissect the role of GhWBC1 in cotton fiber development and elongation.

¹ This work was supported by the National HighTech Program of China (grant no. 2001AA222121) and by the National Key Basic Research Program of China (grant no. 2002CB111301).

^* Corresponding author; e-mail xychen{at}iris.sipp.ac.cn; fax 86–21–64042385.

Received May 20, 2003; returned for revision June 16, 2003; accepted June 18, 2003.

This article has been cited by other articles:

				Y. Lu, J. Curtiss, R. G. Percy, S. E. Hughs, S. Yu, and J. Zhang DNA Polymorphisms of Genes Involved in Fiber Development in a Selected Set of Cultivated Tetraploid Cotton Crop Sci., August 7, 2009; 49(5): 1695 - 1704. [Abstract] [Full Text] [PDF]

				J. J. Lee, A. W. Woodward, and Z. J. Chen Gene Expression Changes and Early Events in Cotton Fibre Development Ann. Bot., December 1, 2007; 100(7): 1391 - 1401. [Abstract] [Full Text] [PDF]

				B. Luo, X.-Y. Xue, W.-L. Hu, L.-J. Wang, and X.-Y. Chen An ABC Transporter Gene of Arabidopsis thaliana, AtWBC11, is Involved in Cuticle Development and Prevention of Organ Fusion Plant Cell Physiol., December 1, 2007; 48(12): 1790 - 1802. [Abstract] [Full Text] [PDF]

				D. Panikashvili, S. Savaldi-Goldstein, T. Mandel, T. Yifhar, R. B. Franke, R. Hofer, L. Schreiber, J. Chory, and A. Aharoni The Arabidopsis DESPERADO/AtWBC11 Transporter Is Required for Cutin and Wax Secretion Plant Physiology, December 1, 2007; 145(4): 1345 - 1360. [Abstract] [Full Text] [PDF]

				A. Sugiyama, N. Shitan, S. Sato, Y. Nakamura, S. Tabata, and K. Yazaki Genome-wide analysis of ATP-binding cassette (ABC) proteins in a model legume plant, Lotus japonicus: comparison with Arabidopsis ABC protein family DNA Res, January 1, 2006; 13(5): 205 - 228. [Abstract] [Full Text] [PDF]

				S. Wang, J.-W. Wang, N. Yu, C.-H. Li, B. Luo, J.-Y. Gou, L.-J. Wang, and X.-Y. Chen Control of Plant Trichome Development by a Cotton Fiber MYB Gene PLANT CELL, September 1, 2004; 16(9): 2323 - 2334. [Abstract] [Full Text] [PDF]

				C. T. Otsu, I. daSilva, J. B. de Molfetta, L. R. da Silva, J. de Almeida-Engler, G. Engler, P. C. Torraca, G. H. Goldman, and M. H. S. Goldman NtWBC1, an ABC transporter gene specifically expressed in tobacco reproductive organs J. Exp. Bot., August 1, 2004; 55(403): 1643 - 1654. [Abstract] [Full Text] [PDF]