Increased cuticular wax deposition does not change residual foliar transpiration

编号 040034302

推送时间 20220516

研究领域 森林培育 

年份 2022 

类型 期刊 

语种 英语

标题 Increased cuticular wax deposition does not change residual foliar transpiration

来源期刊 Plant,Cell & Environment

期 第343期

发表时间 20220131

关键词 amphistomaty;  cuticular wax;  environmental growth conditions;  ex vitro acclimatisation; 
hypostomaty;  in vitro tissue culture;  leaf development;  poplar;  Populus × canescens;  residual
transpiration; 

摘要 The effect of contrasting environmental growth conditions (in vitro tissue culture, ex vitro acclimatisation, climate chamber, greenhouse and outdoor) on leaf development, cuticular wax composition, and foliar transpiration of detached leaves of the Populus × canescens clone 84?K were investigated. Our results show that total amounts of cuticular wax increased more than 10-fold when cultivated in different growth conditions, whereas qualitative wax composition did not change. With exception of plants directly taken from tissue culture showing rapid dehydration, rates of water loss (residual foliar transpiration) of intact but detached leaves were constant and independent from growth conditions and thus independent from increasing wax amounts. Since cuticular transpiration measured with isolated astomatous P. × canescens cuticles was identical to residual foliar transpiration rates of detached leaves, our results confirm that cuticular transpiration of P. × canescens leaves can be predicted with high accuracy from residual transpiration of detached leaves after stomatal closure. Our results convincingly show that more than 10-fold increased wax amounts in P. × canescens cuticles do not lead to decreased rates of residual (cuticular) transpiration.

服务人员 孙小满

服务院士 尹伟伦

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