Protein Synthesis in the Desiccation Tolerant AngiospermXerophyta villosaduring Dehydration

作者：Martin J. Tymms, Donald F. Gaff, Neil D. Hallam · 发表于：Journal of Experimental Botany · 年份：1982 · DOI：10.1093/jxb/33.2.332 · 被引用次数：18 · 研究领域：Plant Stress Responses and Tolerance、Plant responses to elevated CO2、Photosynthetic Processes and Mechanisms

Leaves of the resurrection plant Xerophyta villosa appear to become desiccation tolerant while they dry on the intact plant. After a small decline during moderate water stress, the polyribosome content of attached leaves appears to rise at 50% relative water content (RWC) to almost double the content in controls, before it finally declines to zero at 20% RWC. Partition of leaf soluble protein by polyacrylamide gel electrophoresis indicates an increase in protein with low mobility in dehydrated leaves. Studies on the incorporation of 14C-valine and 3H-valine, and of proteins dissociated into their component polypeptddes suggest that protein synthesis during dehydration is at least partly responsible for the changes in soluble protein.