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Interplay between cytochrome c and gibberellins during Arabidopsis vegetative development
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SYSNO ASEP 0489041 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Interplay between cytochrome c and gibberellins during Arabidopsis vegetative development Author(s) Racca, S. (AR)
Welchen, E. (AR)
Gras, D. E. (AR)
Tarkowská, Danuše (UEB-Q) RID, ORCID
Turečková, Veronika (UEB-Q) RID, ORCID
Maurino, V. G. (DE)
Gonzalez, D. H. (AR)Number of authors 7 Source Title Plant Journal. - : Wiley - ISSN 0960-7412
Roč. 94, č. 1 (2018), s. 105-121Number of pages 17 s. Language eng - English Country GB - United Kingdom Keywords Arabidopsis thaliana ; cytochrome c ; DELLA protein ; gibberellin ; mitochondrion Subject RIV EB - Genetics ; Molecular Biology OECD category Plant sciences, botany R&D Projects LO1204 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UEB-Q - RVO:61389030 UT WOS 000428467900010 EID SCOPUS 85043455121 DOI 10.1111/tpj.13845 Annotation We studied the effect of reducing the levels of the mitochondrial electron carrier cytochrome c (CYTc) in Arabidopsis thaliana. Plants with CYTc deficiency have delayed growth and development, and reach flowering several days later than the wild-type but with the same number of leaves. CYTc-deficient plants accumulate starch and glucose during the day, and contain lower levels of active gibberellins (GA) and higher levels of DELLA proteins, involved in GA signaling. GA treatment abolishes the developmental delay and reduces glucose accumulation in CYTc-deficient plants, which also show a lower raise in ATP levels in response to glucose. Treatment of wild-type plants with inhibitors of mitochondrial energy production limits plant growth and increases the levels of DELLA proteins, thus mimicking the effects of CYTc deficiency. In addition, an increase in the amount of CYTc decreases DELLA protein levels and expedites growth, and this depends on active GA synthesis. We conclude that CYTc levels impinge on the activity of the GA pathway, most likely through changes in mitochondrial energy production. In this way, hormone-dependent growth would be coupled to the activity of components of the mitochondrial respiratory chain. Workplace Institute of Experimental Botany Contact David Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469 Year of Publishing 2019
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