文献类型： 外文期刊

作者： Ning, J. F. ¹ ; Cui, L. H.; Yang, S. H. ¹ ; Ai, S. Y. ¹ ; Li, M. J. ¹ ; Sun, L. L. ² ; Chen, Y.; Wang, R. H.; Zeng, ¹ ;

作者机构： 1.Guangdong Acad Agr Sci, Key Lab Plant Nutr & Fertilizer South Reg, Guangdong Key Lab Nutrient Cycling & Farmland Con, Inst Agr Resources & Environm,Minist Agr, Guangzhou 510640, Guangdong, Peoples R China

2.Guangdong Acad Agr Sci, Key Lab Plant Nutr & Fertilizer South Reg, Guangdong Key Lab Nutrient Cycling & Farmland Con, Inst Agr Resources & Environm,Minist Agr, Guangzhou 510640, Guangdong, Peoples R C

关键词： Ocimumbasilicum L.;Basil;Ion balance;Salt secretion;Seawater stress;X-ray microanalysis

期刊名称：JOURNAL OF ANIMAL AND PLANT SCIENCES （ 影响因子：0.49； 五年影响因子：0.686 ）

ISSN： 1018-7081

年卷期： 2015 年 25 卷 1 期

页码：

收录情况： SCI

摘要： Basil (Ocimum Basilicum) seedlings were subjected to 0,5%, 10%, 20% and 40% seawater for 10 days under shade house conditions. Increasing seawater concentration led to considerable reduction in plant dry matter accumulation. However, root growth was not affected till treated with 40% seawater. Accumulations of Na+ and Cl- were correlated with decline of Ca2+ and K+ in stems, roots or both. Contents of Ca2+ and K+ in leaves increased or remained relatively unchanged with increasing salt levels. In salinity-stressed plants, Na+ were partitioned mainly in roots and more than 50% of the K+ and Ca2+ were stored in leaves. Higher K+/Na+ and Ca2+/Na+ ratios in leaves rather than in roots and stems were observed in Basil plants. Scanning electron microscopy coupled with X-ray microanalysis showed that Basil leaf gland secretions contained Na+ and Ca2+. The Na+ secretion increased while Ca2+ secretion decreased with the increasing seawater concentration. These results suggested that Basil salt tolerance is associated with the compartmentation of Na+ in roots and the balance of K+, Na+ and Ca2+ in leaves as well as the salt secretion by the leaf glands.