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Titolo:
Constitutive over-expression of AtGSK1 induces NaCl stress responses in the absence of NaCl stress and results in enhanced NaCl tolerance in Arabidopsis
Autore:
Piao, HL; Lim, JH; Kim, SJ; Cheong, GW; Hwang, I;
Indirizzi:
Pohang Univ Sci & Technol, Ctr Plant Intracellular Trafficking, Pohang 790784, South Korea Pohang Univ Sci & Technol Pohang South Korea 790784 790784, South Korea Pohang Univ Sci & Technol, Div Mol & Life Sci, Pohang 790784, South Korea Pohang Univ Sci & Technol Pohang South Korea 790784 790784, South Korea Gyeongsang Natl Univ, Dept Biochem, Chinju 660701, South Korea Gyeongsang Natl Univ Chinju South Korea 660701 hinju 660701, South Korea
Titolo Testata:
PLANT JOURNAL
fascicolo: 4, volume: 27, anno: 2001,
pagine: 305 - 314
SICI:
0960-7412(200108)27:4<305:COOAIN>2.0.ZU;2-J
Fonte:
ISI
Lingua:
ENG
Soggetto:
GLYCOGEN-SYNTHASE KINASE-3; PROTEIN PHOSPHATASE CALCINEURIN; SALT TOLERANCE; MOLECULAR-CLONING; PLASMA-MEMBRANE; ABSCISIC-ACID; THALIANA; YEAST; GENE; ENCODES;
Keywords:
AtGSK1; NaCl stress; NaCl tolerance; transgenic plant; signal transduction;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
36
Recensione:
Indirizzi per estratti:
Indirizzo: Hwang, I Pohang Univ Sci & Technol, Ctr Plant Intracellular Trafficking, Pohang 790784, South Korea Pohang Univ Sci & Technol Pohang South Korea 790784 South Korea
Citazione:
H.L. Piao et al., "Constitutive over-expression of AtGSK1 induces NaCl stress responses in the absence of NaCl stress and results in enhanced NaCl tolerance in Arabidopsis", PLANT J, 27(4), 2001, pp. 305-314

Abstract

GSK3/shaggy-like protein kinases have been shown to play diverse roles in development and signal transduction pathways in various organisms. An Arabidopsis homologue of GSK3/shaggy-like kinase, AtGSK1, has been shown to be involved in NaCl stress responses. In order to further clarify the role of AtGSK1 in NaCl stress responses in plants, we generated transgenic Arabidopsis plants that overexpressed AtGSK1 mRNA. These plants showed enhanced resistance to NaCl stress when assayed either as whole plants or by measurementof root growth on NaCl plates. In addition, AtGSK1 transgenic plants in the absence of NaCl stress showed phenotypic changes, such as accumulation ofanthocyanin, that were similar to those observed in wild-type plants underNaCl stress. Transgenic plants accumulated 30-50% more Na+ than did wild-type plants when subjected to NaCl stress, and Ca2+ content was increased by15-30% in the transgenic plants regardless of the NaCl stress level. Northern blotting revealed that AtGSK1 over-expression induced expression of theNaCl stress-responsive genes AtCP1, RD29A and CHS1 in the absence of NaCl stress. In addition, AtCBL1 and AtCP1 were superinduced in the NaCl-stressed transgenic plants. Taken together, these results suggest that AtGSK1 is involved in the signal transduction pathway(s) of NaCl stress responses in Arabidopsis.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 15/07/20 alle ore 21:34:21