干旱区生态环境知识资源中心(Arid): Effect of drought on growth, photosynthesis and total antioxidant capacity of the saharan plant Oudeneya africana

Arid

DOI	10.1016/j.envexpbot.2020.104099
	Effect of drought on growth, photosynthesis and total antioxidant capacity of the saharan plant Oudeneya africana
	Talbi, Sihem; Antonio Rojas, Jose; Sahrawy, Mariam; Rodriguez-Serrano, Maria; Cardenas, Katiuska E.; Debouba, Mohamed; Maria Sandalio, Luisa
通讯作者	Sandalio, LM
来源期刊	ENVIRONMENTAL AND EXPERIMENTAL BOTANY
ISSN	0098-8472
EISSN	1873-7307
出版年	2020
卷号	176
英文摘要	Plants in arid and semi-arid regions are often exposed to adverse environmental conditions such as drought which can affect plant growth. In this study, we investigate the physiological responses of Oudneya africana to drought, using two different irrigation regimes (treatment 1: 50 % field capacity; treatment 2: 25 % FC), a 10-and 20-d time course analysis and a 5-d re-watering period following drought. Our results show that water deficiency reduced growth mainly in T2 plants after 20 d of treatment, with a reduction of 26 % in plant height, 64 % in leaf numbers and of 39% in leaf area, as well as a significant decrease (50 %) in the photosynthesis rate and chlorophyll content. While both instantaneous (A/E) and intrinsic (A/gs) water use efficiency were observed to increase by 96.3 % and 173.20 %, respectively, stomatal closure increased with time and the severity of drought, mainly in the abaxial side (50 %), as evidenced by gs and Ci/Ca data. Polyphenols, flavonoids and total antioxidant capacity increased close to 2-3-fold, with increasing drought stress severity. Re-watering led to a recovery in most of the parameters analyzed, mainly the photosynthetic parameters, while antioxidant capacity remained high. Given these results, the plasticity of photosynthesis and the high antioxidant capacity of O. africana appear to contribute to its tolerance to drought
英文关键词	Antioxidants Desert plant Drought stress Oudneya africana Phenols Photosynthesis
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000539157000001
WOS关键词	WATER-USE EFFICIENCY ; CHLOROPHYLL FLUORESCENCE ; PHENOLIC-COMPOUNDS ; NONSTOMATAL LIMITATIONS ; XANTHOPHYLL CYCLE ; GAS-EXCHANGE ; STRESS ; TOLERANCE ; PARAMETERS ; CULTIVARS
WOS类目	Plant Sciences ; Environmental Sciences
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/324704
作者单位	[Talbi, Sihem] Inst Arid Land, Arid Land & Oasis Cropping Lab, Medenine, Tunisia; [Antonio Rojas, Jose; Sahrawy, Mariam; Rodriguez-Serrano, Maria; Cardenas, Katiuska E.; Maria Sandalio, Luisa] CSIC, EEZ, Dept Biochem Cellular & Mol Biol Plants, C Prof Albareda 1, Granada 18008, Spain; [Debouba, Mohamed] Univ Gabes, Inst Appl Biol, Route El Jorf Km 22-5, Medenine 4119, Tunisia; [Talbi, Sihem] Cytopharma SA, Hammam Zriba 1152, Zaghouan, Tunisia; [Rodriguez-Serrano, Maria] Univ Granada, Fac Educ Sci & Sports, Melilla, Spain
推荐引用方式 GB/T 7714	Talbi, Sihem,Antonio Rojas, Jose,Sahrawy, Mariam,et al. Effect of drought on growth, photosynthesis and total antioxidant capacity of the saharan plant Oudeneya africana[J],2020,176.
APA	Talbi, Sihem.,Antonio Rojas, Jose.,Sahrawy, Mariam.,Rodriguez-Serrano, Maria.,Cardenas, Katiuska E..,...&Maria Sandalio, Luisa.(2020).Effect of drought on growth, photosynthesis and total antioxidant capacity of the saharan plant Oudeneya africana.ENVIRONMENTAL AND EXPERIMENTAL BOTANY,176.
MLA	Talbi, Sihem,et al."Effect of drought on growth, photosynthesis and total antioxidant capacity of the saharan plant Oudeneya africana".ENVIRONMENTAL AND EXPERIMENTAL BOTANY 176(2020).