干旱区生态环境知识资源中心(Arid): The features of main osmolytes, silicon and their coupling effects in improving drought resistance of the typical xerophytes in the desert areas of Northwest China

Arid

DOI	10.1002/ldr.3631
	The features of main osmolytes, silicon and their coupling effects in improving drought resistance of the typical xerophytes in the desert areas of Northwest China
	Kang, Jianjun 1; Zhao, Wenzhi1 ; Zhou, Hong 1; Wang, Zhiwei 2
通讯作者	Zhao, Wenzhi
来源期刊	LAND DEGRADATION & DEVELOPMENT
ISSN	1085-3278
EISSN	1099-145X
出版年	2020
卷号	31 期号:17 页码:2720-2733
英文摘要	Succulent xerophytes (SX) and less succulent xerophytes (LSX) are able to accumulate inorganic ions and synthesize organic solutes (OS) to adapt to drought stress. Silicon (Si) is one of the five beneficial elements for plants and its importance to SX has been confirmed. In the study, the features of main osmolytes and Si were studied in SX and LSX species, and the coupling effects of inorganic ions were investigated in the SX H. ammodendron and LSX C. korshinskii. Results showed that SX and LSX had the common adaptive characteristic of preferentially accumulating inorganic ions rather than OS for drought resistance, and the total amount of osmotica in SX was 2.36-times higher than that in the LSX. The greatest contribution to drought resistance was K+ (29.7%), the lowest was Na+ (2.4%) in LSX, while the greatest contribution was Na+ (41.7%), the total OS was the lowest (2.4%) in SX. The coupling effects of inorganic ions played vital important roles in drought resistance of the SX and LSX. The better coupling ratios of NaCl, NH4NO3, CaCl2, MgCl2 and Na2SiO3 in H. ammodendron were 20:5:20:40:10 and 40:10:60:10:7.5 (g kg(-1) dry soil), and the better coupling ratios of KNO3, CaCl2, MgCl2 and K2SiO3 in C. korshinskii were 20:10:20:10 and 40:20:60:5 (g kg(-1) dry soil). Findings suggested that the rational coupling of inorganic ions can be utilized as mineral compound fertilizers to restore and reconstruct degraded vegetations in semiarid areas.
英文关键词	coupling effects drought resistance feature osmolytes succulent and less succulent xerophyte
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000538868800001
WOS关键词	INORGANIC SOLUTES ; HALOXYLON-AMMODENDRON ; STIMULATES GROWTH ; SEED-GERMINATION ; SODIUM-CHLORIDE ; PROMOTES GROWTH ; PLANT-GROWTH ; WATER STATUS ; POTASSIUM ; STRESS
WOS类目	Environmental Sciences ; Soil Science
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/319313
作者单位	1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Linze Inland River Basin Res Stn, Lanzhou 730000, Peoples R China; 2.Guizhou Acad Agr Sci, Guizhou Inst Prataculture, Guiyang, Peoples R China
推荐引用方式 GB/T 7714	Kang, Jianjun,Zhao, Wenzhi,Zhou, Hong,et al. The features of main osmolytes, silicon and their coupling effects in improving drought resistance of the typical xerophytes in the desert areas of Northwest China[J],2020,31(17):2720-2733.
APA	Kang, Jianjun,Zhao, Wenzhi,Zhou, Hong,&Wang, Zhiwei.(2020).The features of main osmolytes, silicon and their coupling effects in improving drought resistance of the typical xerophytes in the desert areas of Northwest China.LAND DEGRADATION & DEVELOPMENT,31(17),2720-2733.
MLA	Kang, Jianjun,et al."The features of main osmolytes, silicon and their coupling effects in improving drought resistance of the typical xerophytes in the desert areas of Northwest China".LAND DEGRADATION & DEVELOPMENT 31.17(2020):2720-2733.