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Constitutive expression of small heat shock proteins in vegetative tissues of the resurrection plant craterostigma plantagineum

AuthorsAlamillo, J.; Almoguera, Concepción CSIC ORCID ; Bartels, D.; Jordano, Juan CSIC ORCID
Constitutive expression
Desiccation tolerance
Small heat-shock proteins
Vegetative tissues
Issue Date1995
PublisherKluwer Academic Publishers
CitationPlant Molecular Biology 29(5): 1093-1099 (1995)
AbstractUsing antibodies raised against two sunflower small heat shock proteins (sHSPs), we have detected immunologically related proteins in unstressed vegetative tissues from the resurrection plant Craterostigma plantagineum. In whole plants, further accumulation of these polypeptides was induced by heat-shock or water-stress. In desiccation-intolerant Craterostigma callus tissue, we failed to detect sHSP-related polypeptides, but their expression, and the concurrent acquisition of desiccation tolerance was induced by exogenous abscisic acid (ABA) treatment. In untressed plants, the cross-reacting polypeptides were abundant in the roots and lower part of the shoots, where they showed homogeneous tissue-distributions. This constitutive expression is novel for vegetative tissues of higher plants, and resembles the expression patterns of sHSPs in desiccation-tolerant zygotic embryos and germinating seeds.
Publisher version (URL)http://dx.doi.org//10.1007/BF00014981
Appears in Collections:(IRNAS) Artículos
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