干旱区生态环境知识资源中心(Arid): Some Physiological Responses of Chinese Iris to Salt Stress

Arid

DOI	10.1016/S1002-0160(08)60036-3
	Some Physiological Responses of Chinese Iris to Salt Stress
	BAI WenBo; LI PinFang; LI BaoGuo; H. FUJIYAMA; FAN FenCheng
来源期刊	Pedosphere
ISSN	1002-0160
出版年	2008
卷号	18 期号:4 页码:454-463
英文摘要	Chinese iris (Iris lactea Pall. Var. Chinensis (Fisch) Koidz.), a robust iridaceous plant, is widesprcad in arid and semiarid regions with high salinity. However, the mechanism of its salt tolerance is not well understood. In this study,plant growth, water status, content and distribution of inorganic ions, cell membrane permeability, and proline content of I. Lactea under salt stress were investigated using nutrient solutions with six NaCl concentrations ranging from 0 to 350 mmol L~(-1). The results indicated that the biomass, height, fresh weight, K~+ content, and K~+/Na~+ and Ca~(2+)/Na~+ratios decreased with increasing NaCl stress, whereas plant water deficit and contents of Na~+ and Cl~- increased with increasing NaCl stress. In all salt treatments, water deficit of shoots was found to be higher than that of roots and had a positive correlation with salt concentration. When the NaCl concentration was less than 280 mmol L~(-1), the ion absorption selectivity ratio and the transportation selectivity ratio sharply increased with increasing NaCl stress. Under medium salt stress, I. Lactea exhibited a strong K~+ selective absorption and the transportation of K~+ from roots to shoots increased, whereas Na~+ was not transported and was mostly retained in roots. The plants were able to maintain osmotic adjustment through the accumulation of Na~+, Cl~-, and proline. On the basis of its biomass production under salt stress,I. Lactea could be considered as a facultative halophyte.
英文关键词	inorganic ion Iris lactea Pall. var. chinensis (Fisch) Koidz. NaCl stress osmotic adjustment
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Agriculture
CSCD记录号	CSCD:3330729
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/334983
作者单位	BAI WenBo, College of Resources and Environmental Sciences, China Agricultural University, Key Laboratory of Plant-Soil Intera-ctions, Ministry of Education, Beijing 100094, China.; LI PinFang, College of Resources and Environmental Sciences, China Agricultural University, Key Laboratory of Plant-Soil Intera-ctions, Ministry of Education, Beijing 100094, China.; LI BaoGuo, College of Resources and Environmental Sciences, China Agricultural University, Key Laboratory of Plant-Soil Intera-ctions, Ministry of Education, Beijing 100094, China.; H. FUJIYAMA, Faculty of Agriculture, Tottori University, Japan.; FAN FenCheng, Beijing Oasis Technology Development Co., Ltd., Beijing 100094, China.
推荐引用方式 GB/T 7714	BAI WenBo,LI PinFang,LI BaoGuo,et al. Some Physiological Responses of Chinese Iris to Salt Stress[J],2008,18(4):454-463.
APA	BAI WenBo,LI PinFang,LI BaoGuo,H. FUJIYAMA,&FAN FenCheng.(2008).Some Physiological Responses of Chinese Iris to Salt Stress.Pedosphere,18(4),454-463.
MLA	BAI WenBo,et al."Some Physiological Responses of Chinese Iris to Salt Stress".Pedosphere 18.4(2008):454-463.