QQ客服 官方微博 反馈留言

	Short-term effects of experimental warming and enhanced ultraviolet-b radiation on photosynthesis and antioxidant defense of picea asperata seedlings
	Han, Chao1; Liu, Qing1; Yang, Yan2
刊名	Plant growth regulation
	2009-06-01
卷号	58期号:2页码:153-162
关键词	Picea asperata Photosynthesis Antioxidant defense Warming Uv-b
ISSN号	0167-6903
DOI	10.1007/s10725-009-9363-2
通讯作者	Liu, qing(liuqing@cib.ac.cn)
英文摘要	Picea asperata is a dominant tree species in the southeast of the tibetan plateau of china. this paper studies the short-term effects of warming, enhanced uv-b (290-315 nm) and their combination on growth, photosynthesis and antioxidant defense system (aos) of p. asperata seedlings. the experimental design included two levels of uv-b (ambient uv-b and enhanced by 30% uv-b) and two levels of temperature (ambient temperature and warmed temperature by 1.74a degrees c). although enhanced uv-b increased the efficiency of antioxidant defense system (aos) including uv-b absorbing compounds, carotenoids, and antioxidant enzymes such as superoxide dismutase (sod), ascorbate peroxidase (apx), catalase (cat) and peroxidase (pod), it induced over production of reactive oxygen species (ros) and oxidative stress eventually. moreover, enhanced uv-b reduced growth, chlorophyll content and net photosynthetic rate (a). warming did not significantly affect dry mass accumulation of p. asperata seedlings while it accelerated stem elongation and stimulated a. furthermore, warming alleviated the harmful effects of enhanced uv-b on the growth and photosynthesis. it also increased the antioxidant capacities of seedlings exposed to enhanced uv-b. our results showed that the growth of p. asperata seedlings was inhibited by a combination of enhanced uv-b and warming, however, to some extent warming alleviated uv-b effects.
WOS关键词	SUPPLEMENTARY UV-B ; OXIDATIVE STRESS ; PISUM-SATIVUM ; 280-320 NM ; GROWTH ; LEAVES ; PLANTS ; EXPOSURE ; ENZYMES ; PEROXIDATION
WOS研究方向	Plant Sciences
WOS类目	Plant Sciences
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000265826900004
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2393923
专题	中国科学院大学
通讯作者	Liu, Qing
作者单位	1.Chinese Acad Sci, Chengdu Inst Biol, Chengdu 610041, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Han, Chao,Liu, Qing,Yang, Yan. Short-term effects of experimental warming and enhanced ultraviolet-b radiation on photosynthesis and antioxidant defense of picea asperata seedlings[J]. Plant growth regulation,2009,58(2):153-162.
APA	Han, Chao,Liu, Qing,&Yang, Yan.(2009).Short-term effects of experimental warming and enhanced ultraviolet-b radiation on photosynthesis and antioxidant defense of picea asperata seedlings.Plant growth regulation,58(2),153-162.
MLA	Han, Chao,et al."Short-term effects of experimental warming and enhanced ultraviolet-b radiation on photosynthesis and antioxidant defense of picea asperata seedlings".Plant growth regulation 58.2(2009):153-162.

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。