FEBS Letters | |
A role for expansins in dehydration and rehydration of the resurrection plant Craterostigma plantagineum | |
Jones, Louise1  McQueen-Mason, Simon1  | |
[1] CNAP, Department of Biology, University of York, PO Box 373, York YO10 5YW, UK | |
关键词: Plant cell wall; Expansin; Drought stress; Resurrection plant; | |
DOI : 10.1016/S0014-5793(04)00023-7 | |
学科分类:生物化学/生物物理 | |
来源: John Wiley & Sons Ltd. | |
【 摘 要 】
Craterostigma plantagineum is one of the few higher plants capable of surviving desiccation throughout its vegetative tissues. Water loss results in cell shrinkage and a commensurate folding of the cell wall indicating an unusual degree of wall flexibility. We show that wall extensibility undergoes a marked increase during dehydration and rehydration. Similar increases were observed in the activity of expansins in cell walls during these processes suggesting a role for these proteins in increasing wall flexibility. Three α-expansin cDNAs were cloned from dehydrating leaves and transcript levels for one correlated closely with the observed changes in expansin activity during the dehydration and rehydration of leaves.
【 授权许可】
Unknown
【 预 览 】
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RO201912020313844ZK.pdf | 194KB | download |