干旱区生态环境知识资源中心(Arid): Effect of Brassinolide on Stoichiometric Stability Characteristics of Tall Fescue under Drought Stress in Ecological Restoration

Arid

DOI	10.3390/su16145942
	Effect of Brassinolide on Stoichiometric Stability Characteristics of Tall Fescue under Drought Stress in Ecological Restoration
	Kang, Roujia; Li, Mingyi; Guo, Shiwei; Xia, Dong; Liu, Liming; Dong, Wenhao; Xu, Wennian; Lv, Yucai
通讯作者	Li, MY
来源期刊	SUSTAINABILITY
EISSN	2071-1050
出版年	2024
卷号	16 期号:14
英文摘要	In order to investigate the effects of brassinolide (BR) on the ecological stoichiometric characteristics and internal stability of plants in slope ecological protection under different drought conditions, the biomass, proline content, nutrient content, and internal stability of tall fescue (Festuca arundinacea) in three stress periods were analyzed by weighing water control method, with three drought degrees (75% +/- 5%), mild drought (55% +/- 5%) and severe drought (35% +/- 5%) and four BR concentrations (0 mg/L, 0.05 mg/L, 0.2 mg/L and 0.5 mg/L). The results showed that drought stress resulted in a decrease in plant biomass and nutrient content, and there were differences in carbon, nitrogen and phosphorus contents and their stoichiometric ratios in different organs. Spraying suitable concentration of BR could alleviate plant nutrient loss and promote nutrient accumulation of the tall fescue. Under normal water spraying conditions 0.2 mg/L, under mild and severe drought conditions with spraying of 0.5 mg/L BR, it is most suitable for the nutrient accumulation in tall fescue. The tall fescue showed high sensitivity to exogenous BR input, and the internal stability of the underground part of the tall fescue increased clearly. BR is propitious to the synthesis of proline and enhances the drought resistance of plants. According to stoichiometric characteristics, BR can improve the nitrogen and phosphorus utilization efficiency of tall fescue to a certain extent, and the results of the nitrogen and phosphorus ratio show that nitrogen is the main factor limiting plant growth in a vegetation concrete ecological restoration system, which can supplement nitrogen to accelerate the process of vegetation restoration. The application of BR can improve the biomass and stress resistance of tall fescue, adjust the nutrient distribution strategy and stoichiometric stability, and alleviate the adverse effects of drought on plants. This study provides new ideas and methods for ecological restoration and vegetation reconstruction in arid areas.
英文关键词	vegetation concrete drought brassinolide stoichiometric ratio nutrient restriction tall fescue
类型	Article
语种	英语
收录类别	SCI-E ; SSCI
WOS记录号	WOS:001277512500001
WOS关键词	HOMEOSTASIS
WOS类目	Green & Sustainable Science & Technology ; Environmental Sciences ; Environmental Studies
WOS研究方向	Science & Technology - Other Topics ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/405751
推荐引用方式 GB/T 7714	Kang, Roujia,Li, Mingyi,Guo, Shiwei,et al. Effect of Brassinolide on Stoichiometric Stability Characteristics of Tall Fescue under Drought Stress in Ecological Restoration[J],2024,16(14).
APA	Kang, Roujia.,Li, Mingyi.,Guo, Shiwei.,Xia, Dong.,Liu, Liming.,...&Lv, Yucai.(2024).Effect of Brassinolide on Stoichiometric Stability Characteristics of Tall Fescue under Drought Stress in Ecological Restoration.SUSTAINABILITY,16(14).
MLA	Kang, Roujia,et al."Effect of Brassinolide on Stoichiometric Stability Characteristics of Tall Fescue under Drought Stress in Ecological Restoration".SUSTAINABILITY 16.14(2024).