干旱区生态环境知识资源中心(Arid): Effects of exogenous calcium on growth, chlorophyll fluorescence characteristics and antioxidant system of Fraxinus malacophylla seedlings

Arid

DOI	10.1016/j.plaphy.2023.107860
	Effects of exogenous calcium on growth, chlorophyll fluorescence characteristics and antioxidant system of Fraxinus malacophylla seedlings
	Guo, Huanxian; Dong, Qiong; Li, Shimin; Cha, Xiaofei; Sun, Lijuan; Duan, Huachao; Li, Shuping; Jin, Youfan; Zhang, Mei
通讯作者	Dong, Q
来源期刊	PLANT PHYSIOLOGY AND BIOCHEMISTRY
ISSN	0981-9428
EISSN	1873-2690
出版年	2023
卷号	201
英文摘要	Karst ecosystems are becoming increasingly problematic, and high calcium is one of the main characteristics of soils in rocky desertification areas. Chlorophyll fluorescence is one of the most important indicators of the extent to which plants are affected by their environment. There are few reports on the effects of changes in exogenous calcium levels on the chlorophyll fluorescence properties of Fraxinus malacophylla seedlings. In the present study, we investigated the growth, chlorophyll fluorescence properties and antioxidant system of Fraxinus malacophylla seedlings in response to exogenous calcium (as the concentrations of 0, 25, 50, 75 mmol L-1). The results showed that Ca2+ concentration (25-50 mmol L-1) treatment mainly promoted the growth, biomass accumulation, root activity, and chlorophyll synthesis and effect on chlorophyll fluorescence in Fraxinus malacophylla; the developed root system became a strong linking hub for calcium adaptation. In addition, the activities of the antioxidant enzymes peroxidase (POD) and catalase (CAT) are upregulated and play an important role in preventing excessive oxidative damage. OJIP test parameters changed significantly with the addition of exogenous calcium, and parameters related to each photosystem II (PSII) reaction centre, such as ABS/RC and DIo/RC, increased significantly in the OJIP test, with enhanced function of the PSII electron donor lateral oxygen evolution complex. In conclusion, the addition of exogenous calcium (25-50 mmol L-1) had an important protective effect on the photosynthetic mechanism of Fraxinus malacophylla, promoting photosynthesis, better growth and better adaptability.
英文关键词	Exogenous calcium Fraxinus malacophylla seedlings Chlorophyll fluorescence characteristics Antioxidant system
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001039083600001
WOS关键词	PHOTOSYSTEM-II ; DROUGHT STRESS ; KARST AREAS ; WATER ; ENZYMES ; PLANTS ; PHOSPHORYLATION ; PHOTOSYNTHESIS ; SENESCENCE ; PARAMETERS
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/398038
推荐引用方式 GB/T 7714	Guo, Huanxian,Dong, Qiong,Li, Shimin,et al. Effects of exogenous calcium on growth, chlorophyll fluorescence characteristics and antioxidant system of Fraxinus malacophylla seedlings[J],2023,201.
APA	Guo, Huanxian.,Dong, Qiong.,Li, Shimin.,Cha, Xiaofei.,Sun, Lijuan.,...&Zhang, Mei.(2023).Effects of exogenous calcium on growth, chlorophyll fluorescence characteristics and antioxidant system of Fraxinus malacophylla seedlings.PLANT PHYSIOLOGY AND BIOCHEMISTRY,201.
MLA	Guo, Huanxian,et al."Effects of exogenous calcium on growth, chlorophyll fluorescence characteristics and antioxidant system of Fraxinus malacophylla seedlings".PLANT PHYSIOLOGY AND BIOCHEMISTRY 201(2023).