干旱区生态环境知识资源中心(Arid): Physiological response mechanism of European birch (Betula pendula Roth) to PEG-induced drought stress and hydration

Arid

DOI	10.3389/fpls.2023.1226456
	Physiological response mechanism of European birch (Betula pendula Roth) to PEG-induced drought stress and hydration
	Kou, Jing; Yan, Donghan; Qin, Baiting; Zhou, Qiang; Liu, Chunping; Zhang, Lijie
通讯作者	Zhang, LJ
来源期刊	FRONTIERS IN PLANT SCIENCE
ISSN	1664-462X
出版年	2023
卷号	14
英文摘要	Drought stress is also one of the important abiotic factors limiting plant growth and development, and the global temperature is rising year by year, resulting in a dry environment in most terrestrial forests, which will continue to affect the growth, development and reproduction of tree species in forests. European birch(Betula pendula Roth.) native to Europe, introduced to the mountains of eastern Liaoning in 1981 (annual precipitation of about 800mm), European birch relative to downy birch (B. pubescens)has strong adaptability and drought tolerance and cold tolerance, can grow normally in eastern Liaoning, but it is easy to be affected by drought at the seedling stage and cause death, many arid and semi-arid areas have no introduction and practical application of European birch, and there is less research on the drought resistance of European birch. This study used different concentrations of PEG-6000 treatment to simulate drought stress and clarify the changes of various growth physiological parameters and photosynthetic characteristics of European birch seedlings under drought stress, in order to investigate the physiological response mechanism of European birch under drought stress . This study used different concentrations of PEG-6000 treatment to simulate drought stress and clarify the changes of various growth physiological parameters and photosynthetic characteristics of European birch seedlings under drought stress, in order to investigate the physiological response mechanism of European birch under drought stress. The findings demonstrated that stress duration and increasing PEG concentration had a highly significant impact on the growth traits of European birch seedlings (p<0.01); With increasing stress concentration and stress time, antioxidant enzyme activity, membrane lipid peroxidation, and osmoregulatory substance concentrations increased significantly (p<0.01); With increasing stress concentration and duration, photosynthetic parameters and pigments decreased highly significantly (p<0.01); Under different PEG concentration treatments, the anatomical structure of seedling leaves changed more noticeably; there was a significant effect (p <0.05) on the change in mean stomatal length and a highly significant effect (p<0.01) on the change in mean stomatal structure. The study's findings serve as a foundation for the selection and breeding of new drought-tolerant European birch species, as well as a theoretical underpinning for the use of this species in landscaping and the promotion of new drought-tolerant species in China.
英文关键词	European birch PEG treatment drought stress physiological response mechanism anatomic structure electron microscope
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:001057920000001
WOS关键词	WATER AVAILABILITY ; CHLOROPLAST ULTRASTRUCTURE ; BIOCHEMICAL RESPONSES ; ENZYME-ACTIVITIES ; LEAF ANATOMY ; GAS-EXCHANGE ; SEEDLINGS ; GROWTH ; LEAVES ; PROLINE
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/2XILL650/396610
推荐引用方式 GB/T 7714	Kou, Jing,Yan, Donghan,Qin, Baiting,et al. Physiological response mechanism of European birch (Betula pendula Roth) to PEG-induced drought stress and hydration[J],2023,14.
APA	Kou, Jing,Yan, Donghan,Qin, Baiting,Zhou, Qiang,Liu, Chunping,&Zhang, Lijie.(2023).Physiological response mechanism of European birch (Betula pendula Roth) to PEG-induced drought stress and hydration.FRONTIERS IN PLANT SCIENCE,14.
MLA	Kou, Jing,et al."Physiological response mechanism of European birch (Betula pendula Roth) to PEG-induced drought stress and hydration".FRONTIERS IN PLANT SCIENCE 14(2023).