干旱区生态环境知识资源中心(Arid): RESPONSES OF CHLOROPLASTIC ANTIOXIDANT DEFENSE AND PHOTOSYNTHESIS CHARACTERISTICS OF HEDYSARUM SCOPARIUM AND ATRAPHAXIS BRACTEATA UNDER DROUGHT STRESS

Arid

	RESPONSES OF CHLOROPLASTIC ANTIOXIDANT DEFENSE AND PHOTOSYNTHESIS CHARACTERISTICS OF HEDYSARUM SCOPARIUM AND ATRAPHAXIS BRACTEATA UNDER DROUGHT STRESS
	Zhang, Xiaoxi 1,2; Liu, Hui 1; Han, Gang 3
通讯作者	Han, Gang
来源期刊	FRESENIUS ENVIRONMENTAL BULLETIN
ISSN	1018-4619
EISSN	1610-2304
出版年	2019
卷号	28 期号:4 页码:2864-2875
英文摘要	A water-controlled pot-culture experiment was conducted to clarify the mechanism of the photosystem adaptability of Hedysarum scoparium and Atraphaxis bracteata to drought stress, with the responses of the chloroplastic antioxidant defense system and characteristic parameters of the light/CO2 response curves of these shrubs detected. The results indicated that (1) for H scoparium, its chloroplastic SOD and DHAR activities significantly increased by 233% and 52% in light drought (LD) soil, its SOD and DHAR activities and AsA and GSH contents increased by 209%, 37%, 96% and 100% in moderate drought (MD) soil, and its SOD, GR and DHAR activities and AsA, GSH and Car contents significantly increased by 57%, 51%, 37%, 42%, 63% and 179%, but the accumulation of H2O2 and MDA (54.9% and 146.5%) was also observed in the serious drought (SD) soil. For A. bracteata, its chloroplastic GR and DHAR activities and AsA content significantly decreased by 20%, 57% and 19% in LD soil with the accumulation of MDA (214%) simultaneously observed. In the MD and SD soils, the SOD activity and AsA, GSH and Car contents significantly increased by 63%, 40%, 32% and 135%, while the accumulation of H2O2 and MDA was also observed (194% and 145-245%). (2) The P-nmax, A QY and TPU of H. scoparium significantly decreased by 22%, 19% and 13% in MD soil, while the P-nmax, AQY, V-cmax, J(max), TPU and R-1 significantly decreased by 52%, 19%, 31%, 21%, 26% and 16% in SD soil. However, Gm significantly increased by 130% in SD soil. ForA. bracteata, its Pnmax, AQY and LSP significantly decreased by 50%, 19% and 35-41% in all types of drought soil. In conclusion, in the revegetation of desert regions, H. scoparium can be planted in LD and MD conditions, while A. bracteata can only be planted in LD conditions.
英文关键词	Chloroplastic antioxidases and antioxidants desert shrubs drought stress light/CO2 utilization
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000465645700062
WOS关键词	LEAF GAS-EXCHANGE ; WATER-STRESS ; QUERCUS-ILEX ; SOIL-WATER ; LEAVES ; PLANTS ; CONDUCTANCE ; LIMITATIONS ; TOLERANCE ; CULTIVARS
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215716
作者单位	1.Yanan Univ, Coll Life Sci, Yanan 716000, Peoples R China; 2.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China; 3.Northwest A&F Univ, Coll Forestry, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Xiaoxi,Liu, Hui,Han, Gang. RESPONSES OF CHLOROPLASTIC ANTIOXIDANT DEFENSE AND PHOTOSYNTHESIS CHARACTERISTICS OF HEDYSARUM SCOPARIUM AND ATRAPHAXIS BRACTEATA UNDER DROUGHT STRESS[J]. 西北农林科技大学,2019,28(4):2864-2875.
APA	Zhang, Xiaoxi,Liu, Hui,&Han, Gang.(2019).RESPONSES OF CHLOROPLASTIC ANTIOXIDANT DEFENSE AND PHOTOSYNTHESIS CHARACTERISTICS OF HEDYSARUM SCOPARIUM AND ATRAPHAXIS BRACTEATA UNDER DROUGHT STRESS.FRESENIUS ENVIRONMENTAL BULLETIN,28(4),2864-2875.
MLA	Zhang, Xiaoxi,et al."RESPONSES OF CHLOROPLASTIC ANTIOXIDANT DEFENSE AND PHOTOSYNTHESIS CHARACTERISTICS OF HEDYSARUM SCOPARIUM AND ATRAPHAXIS BRACTEATA UNDER DROUGHT STRESS".FRESENIUS ENVIRONMENTAL BULLETIN 28.4(2019):2864-2875.