Effect of CO_2 Increase in Atmosphere and UV-B Intensification on Nostoc commune Photosynthetic Pigment and UV-B Masking Materials  

作　　者：ZHOU Zhi YANG Zaiqing LI Yunguang 

机构地区：[1]College of Life Science and Technology,Huazhong Agricultural University,Wuhan 430070,Hubei,China

出　　处：《Wuhan University Journal of Natural Sciences》2012年第3期255-260,共6页武汉大学学报（自然科学英文版）

基　　金：Supported by the National Natural Science Foundation of China(30700084)

摘　　要：Using Nostoc commune as experiment target,the effect of CO 2 with different concentrations in atmosphere and dosage of UV-B on photosynthetic pigment chlorophyll a （Chl a）,carotenoids,phycoerythrin,phycocyanin,allophycocyanin and UV-B masking materials was studied.The results showed that high dosage of UV-B radiation inhibited the synthesis process of Chl a,phycoerythrin,phycocyanin and allophycocyanin,but promoted the synthesis of carotenoids,MAAs and scytonemin,thus the negative effect produced by UV-B radiation was reduced and the resistance of Nostoc commune against UV-B radiation was enhanced.Using Nostoc commune as experiment target,the effect of CO 2 with different concentrations in atmosphere and dosage of UV-B on photosynthetic pigment chlorophyll a （Chl a）,carotenoids,phycoerythrin,phycocyanin,allophycocyanin and UV-B masking materials was studied.The results showed that high dosage of UV-B radiation inhibited the synthesis process of Chl a,phycoerythrin,phycocyanin and allophycocyanin,but promoted the synthesis of carotenoids,MAAs and scytonemin,thus the negative effect produced by UV-B radiation was reduced and the resistance of Nostoc commune against UV-B radiation was enhanced.

关 键 词：Nostoc commune UV-B CO2  photosynthetic pigments Mycosporine-like amino acids （MAAs） SCYTONEMIN 

分 类 号：Q949.29[生物学—植物学]