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- Title
- A ginseng-specific abundant protein (GSAP) located on the cell wall is involved in abiotic stress tolerance
- Author(s)
- Y I Ha; J M Lim; S M Ko; Jang Ryol Liu; D W Choi
- Bibliographic Citation
- Gene, vol. 386, no. 1, pp. 115-122
- Publication Year
- 2007
- Abstract
- Ginseng ESTs allowed us to identify an unknown transcript which is highly abundant in rhizomes and seeds. We called the cDNA ginseng-specific abundant protein (GSAP), and identified three homologues, GSAP1, GSAP2, and GSAP3. GSAP cDNAs encode a small polypeptide consisting of 121 or 117 amino acids, and GSAP3 shows 87.6% amino acid sequence homology with GSAP1. GSAP transcripts were detected in most plant tissues, but GSAP3 is highly expressed in seeds, and is up-regulated under stressed conditions, water deficit. GSAP3-GFP fusion protein is located in the cell wall when expressed in onion epidermis cells. The transgenic Arabidopsis seedlings which over-expressed GSAP3 grew faster than those of the wild-type plant on the medium containing 300 mM mannitol and 100 mM NaCl. GSAP3 may play a role in altering the characteristics of the cell wall to allow for more tolerance of water deficit stress under abiotic stress conditions.
- Keyword
- Cell wall proteinESTsPanax ginsengWater deficit stress
- ISSN
- 0378-1119
- Publisher
- Elsevier
- DOI
- http://dx.doi.org/10.1016/j.gene.2006.08.026
- Type
- Article
- Appears in Collections:
- 1. Journal Articles > Journal Articles
- Files in This Item:
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