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Initial water deficit effects on Lupinus albus photosynthetic performance, carbon metabolism, and hormonal balance: metabolic reorganization prior to early stress responses
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SYSNO ASEP 0365274 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Initial water deficit effects on Lupinus albus photosynthetic performance, carbon metabolism, and hormonal balance: metabolic reorganization prior to early stress responses Author(s) Pinheiro, C. (PT)
António, C. (GB)
Dobrev, Petre (UEB-Q) RID, ORCID
Vaňková, Radomíra (UEB-Q) RID, ORCID
Wilson, J. C. (GB)Number of authors 10 Source Title Journal of Experimental Botany. - : Oxford University Press - ISSN 0022-0957
Roč. 62, č. 14 (2011), s. 4965-4974Number of pages 10 s. Language eng - English Country GB - United Kingdom Keywords Carbon metabolism ; hormone balance ; LC-MS Subject RIV EF - Botanics CEZ AV0Z50380511 - UEB-Q (2005-2011) UT WOS 000295983800021 DOI 10.1093/jxb/err194 Annotation The early (2–4 d) effects of slowly imposed soil water deficit on Lupinus albus photosynthetic performance, carbon metabolism, and hormonal balance in different organs (leaf blade, stem stele, stem cortex, and root) were evaluated on 23-d-old plants (growth chamber assay). Our work shows that several metabolic adjustments occurred prior to alteration of the plant water status, implying that water deficit is perceived before the change in plant water status. The slow, progressive decline in soil water content started to be visible 3 d after withholding water (3 DAW). The earliest plant changes were associated with organ-specific metabolic responses (particularly in the leaves) and with leaf conductance and only later with plant water status and photosynthetic rate (4 DAW) or photosynthetic capacity (according to the Farquhar model; 6 DAW). Principal component analysis (PCA) of the physiological parameters, the carbohydrate and the hormone levels and their relative values. Workplace Institute of Experimental Botany Contact David Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469 Year of Publishing 2012
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