干旱区生态环境知识资源中心(Arid): Physiological and biochemical responses of Isatis indigotica to deficit irrigation in a cold and arid environment

Arid

DOI	10.3389/fpls.2022.1094158
	Physiological and biochemical responses of Isatis indigotica to deficit irrigation in a cold and arid environment
	Zhou, Chenli; Yu, Shouchao; Zhang, Hengjia; Li, Fuqiang
通讯作者	Zhang, HJ
来源期刊	FRONTIERS IN PLANT SCIENCE
ISSN	1664-462X
出版年	2023
卷号	13
英文摘要	Water shortage and wastage are critical challenges to sustainable agricultural development, especially in arid and semiarid regions worldwide. Isatis indigotica (woad), as a traditional Chinese herb, was planted in a large area in a cold and arid environment of Hexi. Regulated deficit irrigation can reduce the growth of some vegetative organs by changing the accumulation and distribution of photosynthetic products in crops, thus increasing the economic yield of crops. In agricultural production, crop productivity may be improved by mulched drip irrigation and deficit irrigation. Hence, a field experiment was conducted to investigate the responses of photosynthesis, malondialdehyde, osmotic regulators, antioxidant enzyme activities, and the yield of woad to water deficit at different growth stages. The growth stage of woad was divided in four stages: seedling, vegetative growth, fleshy root growth, and fleshy root maturity. During vegetative growth, fleshy root growth, and fleshy root maturity, three water gradients were set for plants with mild (65-75% in field water capacity, FC), moderate (55-65% in FC), and severe (45-55% in FC) deficits, respectively. In contrast, an adequate water supply (75-85% in FC) during the growth period was designed as the control (CK). The net photosynthetic rate (Pn), transpiration rate, and stomatal conductance of woad significantly decreased (P< 0.05) by moderate and severe water deficits. Still, rehydration after the water deficit could produce a noticeable compensation effect. In contrast, malondialdehyde and proline accumulation significantly increased under moderate and severe water deficits. At the same time, the superoxide dismutase, peroxidase, and catalase all had high activities (increased significantly by 19.87-39.28%, 19.91-34.26%, and 10.63-16.13% compared with CK, respectively), but yields were substantially lower, compared to CK. Additionally, the net photosynthetic rate was negatively correlated with antioxidant enzyme activity. The economic yield of plants subjected to continuous mild water deficit during both vegetative and fleshy root growth was not significantly different from that in CK. Still, the water use efficiency improved significantly. Therefore, the continuous mild water deficit during vegetative and fleshy root growth could improve the physiological and biochemical mechanisms of the plant, representing an optimal irrigation strategy for woad in cold and arid areas.
英文关键词	antioxidant enzyme activities malonaldehyde photosynthetic parameter water deficit woad yield water use efficiency proline
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000920680200001
WOS关键词	CARBON-ISOTOPE DISCRIMINATION ; MESSENGER-RNA EXPRESSION ; WATER-USE EFFICIENCY ; DROUGHT STRESS ; WINTER-WHEAT ; PHOTOSYNTHETIC CHARACTERISTICS ; PROLINE ACCUMULATION ; ANTIOXIDANT ENZYMES ; LIPID-PEROXIDATION ; HYDROGEN-PEROXIDE
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/2XILL650/396579
推荐引用方式 GB/T 7714	Zhou, Chenli,Yu, Shouchao,Zhang, Hengjia,et al. Physiological and biochemical responses of Isatis indigotica to deficit irrigation in a cold and arid environment[J],2023,13.
APA	Zhou, Chenli,Yu, Shouchao,Zhang, Hengjia,&Li, Fuqiang.(2023).Physiological and biochemical responses of Isatis indigotica to deficit irrigation in a cold and arid environment.FRONTIERS IN PLANT SCIENCE,13.
MLA	Zhou, Chenli,et al."Physiological and biochemical responses of Isatis indigotica to deficit irrigation in a cold and arid environment".FRONTIERS IN PLANT SCIENCE 13(2023).