盐度对互花米草生长及脯氨酸、可溶性糖和蛋白质含量的影响

生态学杂志 ›› 2005, Vol. ›› Issue (4): 373-376.

盐度对互花米草生长及脯氨酸、可溶性糖和蛋白质含量的影响

肖强, 郑海雷, 陈瑶, 黄伟滨, 朱珠

厦门大学生命科学学院, 厦门, 361005

收稿日期:2003-09-26 修回日期:2003-11-19 出版日期:2005-04-10
通讯作者: 郑海雷
基金资助:
国家自然科学基金项目(30271065,39970438,39870630);福建省自然科学基金资助项目(D0210001)

Effects of salinity on the growth and proline,soluble sugar and protein contents of Spartina alterniflora

XIAO Qiang, ZHENG Hailei, CHEN Yao, HUANG Weibin, ZHU Zhu

School of Life Sciences, Xiamen University, Xiamen 361005, China

Received:2003-09-26 Revised:2003-11-19 Online:2005-04-10

摘要/Abstract

摘要： 研究了互花米草在不同培养盐度下,株高、茎粗、叶长、叶宽、叶面积、鲜重等生长指标以及脯氨酸、可溶性糖和蛋白质含量的变化情况。结果表明,随着盐度增加,米草株高呈下降趋势,在高盐度(50‰)下,米草叶面积、叶长等指标与对照组相比明显下降,鲜重与低盐度组比较显著下降。米草叶片中可溶性糖、脯氨酸含量随盐度增加总体上呈上升趋势;可溶性蛋白质含量随盐度增加亦呈上升趋势,表明蛋白质合成增强。在盐胁迫下,渗透调节物质的积累作用是互花米草对盐胁迫的主要响应过程,可以作为其抗盐性的生理参数。

关键词: 水淹, 羊草草地, 地上生物量

Abstract: Under different salinity conditions,variations of height,stem diameter,leaf length and width,leaf area,fresh weight,proline,soluble sugar and protein contents of Spartina alterniflora seedlings were investigated.The results showed that the height tended to decrease with the increaseing salinity in the medium.In high salinity (50‰) treatment,the leaf area and length decreased significantly compared with control,and single plant fresh weight decreased more than those of low salinity treatments.The sugar and proline contents in leaves generally increased with salinity.The content of protein also increased with salinity,which implied the increase in protein synthesis.Accumulation of osmoprotectants was the key response of Spartina alterniflora under salinity stress,and it could be characterized as an indicator of salt tolerance.

Key words: Flooding, Leymus chinensis grassland, Aboveground biomass

中图分类号:

Q945

肖强, 郑海雷, 陈瑶, 黄伟滨, 朱珠. 盐度对互花米草生长及脯氨酸、可溶性糖和蛋白质含量的影响[J]. 生态学杂志, 2005, (4): 373-376.

XIAO Qiang, ZHENG Hailei, CHEN Yao, HUANG Weibin, ZHU Zhu. Effects of salinity on the growth and proline,soluble sugar and protein contents of Spartina alterniflora[J]. cje, 2005, (4): 373-376.

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