期刊文献+

UV-B辐射增强对芦苇光合生理及叶绿体超微结构的影响 被引量:5

Effects of enhanced UV-B radiation on photosynthetic physiology and chloroplast ultrastructure of Phragmites australis
收藏 分享 导出
摘要 在UV-B辐照增强条件下,研究不同辐照梯度对芦苇光合特性、光合色素含量及叶绿体超微结构的影响.结果表明:与自然光照相比,UV-B辐照增强显著降低芦苇叶片净光合速率、气孔导度、蒸腾速率,且随辐照强度增大,降低程度加剧,胞间CO2浓度升高,光合效率显著降低;与自然光照相比,UV-B辐照增强显著降低芦苇叶片光合色素含量(包括叶绿素a、叶绿素b、总叶绿素和类胡萝卜素),且随辐照强度增大,降低程度加剧;UV-B辐射增强条件下,叶绿体超微结构遭到破坏,表现为叶绿体结构变形,类囊体片层排列稀疏紊乱、膨胀甚至模糊不清,并且UV-B辐射强度越大,损伤越大,高强度UV-B辐射对叶绿体超微结构的影响大于低强度辐射. 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.
作者 褚润 陈年来 CHU Run, CHEN Nian-lai (College of Resources and Environment, Gansu Agricultural University, Lanzhou 730070, China).
出处 《应用生态学报》 CSCD 北大核心 2017年第11期3515-3520,共6页 Chinese Journal of Applied Ecology
基金 甘肃省重点研发计划项目(1504FKCA003)资助
关键词 芦苇 UV-B辐射 光合特性 光合色素 叶绿体超微结构 Phragmites australis UV-B radiation photosynthetic characteristics photosynthetic pigment chloroplast ultrastructure.
作者简介 褚润,女,1981年生,讲师,博士研究生.主要从事植物逆境生理研究.E—mail:churun3@126.com;通讯作者.E-mail:chennl@gsau.edu.com
  • 相关文献

参考文献14

二级参考文献336

共引文献628

同被引文献73

引证文献5

投稿分析

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部 意见反馈
新型冠状病毒肺炎防控与诊疗专栏