应用生态学报2017，Vol.28Issue(11)：3515-3520,6.DOI:10.13287/j.1001-9332.201711.006
UV-B辐射增强对芦苇光合生理及叶绿体超微结构的影响
Effects of enhanced UV-B radiation on photosynthetic physiology and chloroplast ultrastructure of Phragmites australis
摘要
Abstract
The effects of different intensities of UV-B radiation on photosynthetic characteristics,photosynthetic pigment content and chloroplast ultrastructure of Phragmites australis were studied in this paper.The results showed that enhanced UV-B radiation significantly reduced the net photosynthetic rate,stomatal conductance and transpiration rate,and the degree of degradation increased with the increasing irradiation intensity.The intercellular CO2 content increased and the photosynthetic efficiency decreased significantly compared with the control.Enhanced UV-B radiation decreased photosynthetic pigment contents,including chlorophyll a,chlorophyll b,total chlorophyll and carotenoid,and the decrement increased with the increasing irradiation intensity.Under the enhanced UV-B radiation treatment,chloroplast structure was damaged,and thylakoid lamellae was disorde-red,swelling and even blurred.The effect of high intensity of radiation on chloroplast ultrastructure was greater than that of lower intensity of radiation.关键词
芦苇/UV-B辐射/光合特性/光合色素/叶绿体超微结构Key words
Phragmites australis/UV-B radiation/photosynthetic characteristics/photosynthetic pigment/chloroplast ultrastructure引用本文复制引用
褚润,陈年来..UV-B辐射增强对芦苇光合生理及叶绿体超微结构的影响[J].应用生态学报,2017,28(11):3515-3520,6.基金项目
本文由甘肃省重点研发计划项目(1504FKCA003)资助 This work was supported by the Research and Development Project of Gansu Province,China(1504FKCA003). （1504FKCA003）
