QQ客服 官方微博 反馈留言

	Impacts of UV radiation on growth and photosynthetic carbon acquisition in Gracilaria lemaneiformis (Rhodophyta) under phosphorus-limited and replete conditions
	Xu, Zhiguang（Shantou Univ, Marine Biol Inst, Shantou 515063, Guangdong, Peoples R China） ; Gao, Kunshan ; Gao KS(高坤山)
	2009-12-03
关键词	photosynthesis pigment the ratio of V-max to K-DIC UV-absorbing compounds
英文摘要	Solar ultraviolet radiation (UVR, 280-400 nm) is known to negatively affect macroalgal growth and photosynthesis, while phosphorus availability may affect their sensitivity to UVR. Here, we show that UV-A enhanced the growth rate of the red macroalga, Gracilaria lemaneiformis Bory de Saint-Vincent under inorganic phosphorus (Pi)-replete but reduced it under Pi-limited conditions. Maximal net photosynthetic rates were significantly reduced by both UV-A and UV-B, but the apparent photosynthetic efficiency was enhanced in the presence of UV-A. The UV-induced inhibition was exacerbated under Pi-limited conditions. The activity of total carbonic anhydrase was enhanced and the photosynthetic affinity for exogenous inorganic carbon (Ci) was raised for thalli grown in the presence of UVR under both Pi-replete and Pi-limited conditions. The relative growth rate was closely related to Ci acquisition capability (V-max/K-DIC), which was enhanced by UVR exposure under Pi-replete but not significantly affected under Pi-limited conditions.; National Basic Research Program of China [2009CB421207]; National Natural Science Foundation of China [90411018, 40876058]; '863' project [2006AA10A413]; Ministry of Education [308015]
语种	英语
出版者	CSIRO PUBLISHING
内容类型	期刊论文
源URL	[http://dx.doi.org/doi:10.1071/FP09092]
专题	海洋环境－已发表论文
推荐引用方式 GB/T 7714	Xu, Zhiguang,Gao, Kunshan,Gao KS. Impacts of UV radiation on growth and photosynthetic carbon acquisition in Gracilaria lemaneiformis (Rhodophyta) under phosphorus-limited and replete conditions[J],2009.
APA	Xu, Zhiguang,Gao, Kunshan,&高坤山.(2009).Impacts of UV radiation on growth and photosynthetic carbon acquisition in Gracilaria lemaneiformis (Rhodophyta) under phosphorus-limited and replete conditions..
MLA	Xu, Zhiguang,et al."Impacts of UV radiation on growth and photosynthetic carbon acquisition in Gracilaria lemaneiformis (Rhodophyta) under phosphorus-limited and replete conditions".(2009).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。