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Differential accumulation of dehydrin-like proteins by abiotic stresses lin Deschampsia antarctica Desv

机译:非生物胁迫对脱水脱水素样蛋白的差异积累lin Deschampsia antarctica Desv

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Dehydrins are proteins that accumulate during environmental stresses leading to cell dehydration. Deschampsia antarctica is one of the two vascular plants that have colonized the Maritime Antarctic. This plant is usually exposed to cold, salt and desiccating winds in the field. We proposed that among the factors that allow D. antarctica to survive the harsh environmental conditions is the presence of dehydrins. We studied the accumulation of dehydrins by abscisic acid (ABA), dehydration, NaCl and low osmotic potential. Western blots using an anti-dehydrin antibody revealed a complex pattern of dehydrin-like proteins (DLPs) accumulation in the different treatments. DLPs with apparent molecular weight of 58, 57, 55, 53, 48, 42, 32, 30, 28 and 25 kDa were detected in the different treatments. DLPs accumulation was associated with a decrease in the relative water content (RWC) of the plants. These results suggest that DLPs accumulation could contribute to explain how D. antarctica can survive under adverse Antarctic conditions.
机译:脱水蛋白是在导致细胞脱水的环境压力下积累的蛋白质。南极洲Deschampsia是殖民于南极海洋的两种维管植物之一。这种植物通常在田间暴露于寒冷,盐分和干燥的风中。我们提出,使D. antarctica能够在恶劣的环境条件下生存的因素之一是存在脱水素。我们研究了脱落酸(ABA),脱水,NaCl和低渗透势下脱水蛋白的积累。使用抗脱水蛋白抗体的蛋白质印迹显示了在不同处理中的类似脱水蛋白样蛋白质(DLP)积累的复杂模式。在不同处理中检测到表观分子量为58、57、55、53、48、42、32、30、28和25 kDa的DLP。 DLP的积累与植物相对含水量(RWC)的降低有关。这些结果表明,DLP的积累可能有助于解释南极D.在南极不利条件下如何生存。

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