At-HSP17.6A, encoding a small heat-shock protein in Arabidopsis, can enhance osmotolerance upon overexpression

Citation
Wn. Sun et al., At-HSP17.6A, encoding a small heat-shock protein in Arabidopsis, can enhance osmotolerance upon overexpression, PLANT J, 27(5), 2001, pp. 407-415
Citations number
36
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Plant Sciences","Animal & Plant Sciences
Journal title
PLANT JOURNAL
ISSN journal
0960-7412 → ACNP
Volume
27
Issue
5
Year of publication
2001
Pages
407 - 415
Database
ISI
SICI code
0960-7412(200109)27:5<407:AEASHP>2.0.ZU;2-#
Abstract
Owing to their sessile lifestyle, it is crucial for plants to acquire stres s tolerance. The function of heat-shock proteins, including small heat-shoc k proteins (smHSPs), in stress tolerance is not fully explored. To gain fur ther knowledge about the smHSPs, the gene that encoded the cytosolic class II smHSP in Arabidopsis thaliana (At-HSP17.6A) was characterized. The At-HS P17.6A expression was induced by heat and osmotic stress, as well as during seed development. Accumulation of At-HSP17.6A proteins could be detected w ith heat and at a late stage of seed development, but not with osmotic stre ss, suggesting stress-induced post-transcriptional regulation of At-HSP17.6 A expression. Overproduction of At-HSP17.6A could increase salt and drought tolerance in Arabidopsis. The chaperone activity of At-HSP17.6A was demons trated in vitro.