生态学杂志2012，Vol.31Issue(12)：3064-3069,6.
脱水过程中两种结皮藓类植物的光合特性
Photosynthetic properties of two crust mosses during dehydration
摘要
Abstract
Didymodon vinealis and Bryum argenteum are the two important components of biologi-cal soil crusts for sand-fixation at Shapotou region of Northwest China. This paper studied the photosynthetic characteristics of the two mosses during dehydration, and detected the expression of related proteins. Along with the reduction of the mosses water content, the mosses water-solu-ble protein and chlorophyll contents and the kinetic parameters induced by chlorophyll a fluores-cence as well as the photosystem proteins decreased significantly, while the mosses ion leakage and carotenoid contents increased significantly and had positive correlations with the water con-tent. These changes were significantly greater for B. argenteum than for D. vinealis. The results implied that dehydration induced the decrease of the mosses protein contents, the damage of cell membrane, and further, the inactivation of PSⅡ reaction center proteins, resulting in the decline of the mosses photdsynthetic capability.关键词
土生对齿藓/真藓/脱水/类胡萝卜素/叶绿素a荧光/光系统蛋白Key words
Didymodon vinealis/Bryum argenteum/dehydration/carotenoid/chlorophyll a flu-orescence/photosystem protein分类
农业科技引用本文复制引用
陈翠云,李新荣,赵昕..脱水过程中两种结皮藓类植物的光合特性[J].生态学杂志,2012,31(12):3064-3069,6.基金项目
国家自然科学基金项目(40825001,40930636)和中国科学院寒区旱区环境与工程研究所青年人才成长基金项目(Y084921001)资助. （40825001,40930636）
