Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/32397
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Title

Tissue-specific expression of sunflower heat shock proteins in response to water stress

AuthorsAlmoguera, Concepción CSIC ORCID ; Coca, María CSIC ORCID; Jordano, Juan CSIC ORCID
KeywordsDesiccation tolerance
Messenger-RNAS
Soybean seedlings
Abscisic-acid
Genes
Identification
Accumulation
Localization
Water-stressed sunflower
Environmental stress
Issue DateDec-1993
PublisherBlackwell Publishing
CitationPlant Journal 4, (6) 947-958, (1993)
AbstractAccumulation of mRNA and synthesis of low-molecular-weight heat shock proteins (LMW HSPs) was investigated in water-stressed sunflower, under experimental conditions resulting in little or no thermal stress. Using probes and antibodies derived from developmentally expressed LMW HSPs, it was shown that homologous mRNAs and proteins accumulate in the stem and root of water-stressed plants. This expression is quantitatively comparable with the response to heat shock: protein and mRNA accumulate to similar, high, levels and persist for comparable times during recovery from either environmental stress. However, it is shown that LMW HSPs with different molecular weights and isoelectric points are expressed in response to heat shock or water stress. Furthermore in situ localizations show a differential tissue-specificity for the water-stress- and heat-shock-induced LMW HSPs. Whereas the latter are localized mostly around the xylem vessels in the stem, the water-stress-induced proteins accumulate in the fascicular and interfascicular cambium. The possible functional implications for this specific expression are discussed.
Publisher version (URL)http://dx.doi.org/10.1046/j.1365-313X.1993.04060947.x
URIhttp://hdl.handle.net/10261/32397
DOI10.1046/j.1365-313X.1993.04060947.x
ISSN0960-7412
E-ISSN1365-313X
Appears in Collections:(IRNAS) Artículos

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