干旱区生态环境知识资源中心(Arid): Seasonal progression of photoprotection responses in different aged savin juniper plants under shade and sun

Arid

DOI	10.1007/s00468-021-02139-2
	Seasonal progression of photoprotection responses in different aged savin juniper plants under shade and sun
	Zhang, Jin-Ling; Li, Xiao-Gang; Xu, Xue-Hua; Chen, Hai-Peng; Li, Yu-Ling; Guy, Robert D.
通讯作者	Li, YL (corresponding author), Hebei Agr Univ, Coll Forestry, Baoding 071000, Peoples R China. ; Guy, RD (corresponding author), Univ British Columbia, Dept Forest & Conservat Sci, Fac Forestry, Vancouver, BC V6T 1Z4, Canada.
来源期刊	TREES-STRUCTURE AND FUNCTION
ISSN	0931-1890
EISSN	1432-2285
出版年	2021
英文摘要	Key message In savin juniper, age and season can affect photosynthesis, chlorophyll fluorescence and photoprotective pigments. In spring, 2-year-old plants had more lutein than 5-year-olds, but the reverse occurred during summer and autumn. Savin juniper is an endemic evergreen shrub in the Mu Us Desert, where it establishes only with the protection of larger plants. Ultimately, established plants emerge into full sunlight as they grow. To explore how photoprotection responses change during this transition, a pot study was established under field conditions with three sunlight regimes (10%, 50% and 100% light transmittance) and two age cohorts (1- and 4-year-old rooted scions). To avoid potentially confounding effects of differences in leaf form, after one year we measured photosynthesis, chlorophyll fluorescence and foliar pigments of 2- and 5-year-old savin juniper on a monthly basis from April to October. For gas exchange and fluorescence variables, there were no interactions between cohort and sunlight except for intrinsic water-use efficiency in June; however, there were many interactions regarding pigment concentrations and ratios. Generally, 5-year-old plants had higher mean chlorophyll, total carotenoids, and chlorophyll a/b ratios than 2-year-old plants, but lower mean beta-carotene/alpha-carotene ratio, zeaxanthin and lutein. Plants under brighter light had lower mean lutein. There were obvious changes in beta-carotene/alpha-carotene, zeaxanthin and lutein in June, July and August, respectively. Under 100% sunlight, lutein concentration was higher in 2-year-old than 5-year-old plants from April to June, but this pattern reversed from July to October. The effects of age and season, in addition to the prevailing light regime, need to be considered when investigating the role of carotenoids in photoprotection.
英文关键词	Sabina vulgaris Ant Age effects Photosynthesis Carotenoids Growing season
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000648213200001
WOS关键词	SHRUB SABINA-VULGARIS ; MU-US SANDLAND ; PIGMENT COMPOSITION ; GAS-EXCHANGE ; TREE-AGE ; CHLOROPHYLL FLUORESCENCE ; CAROTENOID COMPOSITION ; XANTHOPHYLL CYCLE ; FAGUS-SYLVATICA ; LEAF
WOS类目	Forestry
WOS研究方向	Forestry
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/352471
作者单位	[Zhang, Jin-Ling; Li, Xiao-Gang; Xu, Xue-Hua; Chen, Hai-Peng; Li, Yu-Ling] Hebei Agr Univ, Coll Forestry, Baoding 071000, Peoples R China; [Zhang, Jin-Ling; Guy, Robert D.] Univ British Columbia, Dept Forest & Conservat Sci, Fac Forestry, Vancouver, BC V6T 1Z4, Canada
推荐引用方式 GB/T 7714	Zhang, Jin-Ling,Li, Xiao-Gang,Xu, Xue-Hua,et al. Seasonal progression of photoprotection responses in different aged savin juniper plants under shade and sun[J],2021.
APA	Zhang, Jin-Ling,Li, Xiao-Gang,Xu, Xue-Hua,Chen, Hai-Peng,Li, Yu-Ling,&Guy, Robert D..(2021).Seasonal progression of photoprotection responses in different aged savin juniper plants under shade and sun.TREES-STRUCTURE AND FUNCTION.
MLA	Zhang, Jin-Ling,et al."Seasonal progression of photoprotection responses in different aged savin juniper plants under shade and sun".TREES-STRUCTURE AND FUNCTION (2021).