Počet záznamů: 1
Analysis of Cytokinin Mutants and Regulation of Cytokinin Metabolic Genes Reveals Important Regulatory Roles of Cytokinins in Drought, Salt and Abscisic Acid Responses, and Abscisic Acid Biosynthesis
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SYSNO ASEP 0365273 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Analysis of Cytokinin Mutants and Regulation of Cytokinin Metabolic Genes Reveals Important Regulatory Roles of Cytokinins in Drought, Salt and Abscisic Acid Responses, and Abscisic Acid Biosynthesis Tvůrce(i) Nishiyama, R. (JP)
Watanabe, Y. (JP)
Werner, T. (DE)
Vaňková, Radomíra (UEB-Q) RID, ORCID
Schmülling, T. (DE)
Tran, L. S. P. (JP)Celkový počet autorů 13 Zdroj.dok. Plant Cell. - : Oxford University Press - ISSN 1040-4651
Roč. 23, č. 6 (2011), s. 2169-2183Poč.str. 15 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova TRANSGENIC TOBACCO PLANTS ; WATER-STRESS ; LEAF SENESCENCE Vědní obor RIV ED - Fyziologie CEZ AV0Z50380511 - UEB-Q (2005-2011) UT WOS 000293224200013 DOI 10.1105/tpc.111.087395 Anotace Functional analyses of CK-deficient AtCKX overexpressers or atipt mutant provided direct evidence that CKs negatively regulate salt and drought stress signalings. All of the AtCKX overexpressers and the atipt1 3 5 7 mutant with reduced levels of various CKs exhibited a strong stress tolerant phenotype that was associated with increased cell membrane integrity and stability rather than stomatal density and ABA-mediated stomatal closure. Expression of all AtIPT genes and the majority of the AtCKX genes was repressed by stress and ABA treatments. Additionally, while CK deficiency increased sensitivity to exogenous ABA, it caused down-regulation of key ABA biosynthetic genes, leading to a significant reduction in endogenous ABA levels in CK-deficient plants relative to wild-type. These data demonstrate the importance of the ABA/CK ratio and a vital CK-dependent homeostatic control of ABA metabolism, ABA sensing and response. Pracoviště Ústav experimentální botaniky Kontakt David Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469 Rok sběru 2012
Počet záznamů: 1