Plant physiology, biochemistry and molecular biology

Effect of NaCl Stress on Physiological Characteristics of Chrysophyllum cainito Leaves

  • SONG Zhi-Yu ,
  • LIU Yu-Mei ,
  • CHI Min-Jie
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  • (1.Fujian Key Laboratory of Physiology and Biochemistry for Subtropical Plant, Fujian Institute of Subtropical Botany, Xiamen 361006, Fujian China; 2.Xiamen Overseas Chinese Subtropical Plant Introduction Garden, Xiamen 361002, Fujian China)

Received date: 2017-05-04

  Revised date: 2017-06-08

  Online published: 2017-09-30

Abstract

To understand the tolerance and the physiological characteristics of Chrysophyllum cainito under NaCl stress, the potted plants were watered with 0, 0.2%, 0.4%, 0.6% NaCl, the index including contents of chlorophyll, regulatory substances, MDA and the antioxidant enzyme activities of leaves were measured. The results showed that chlorophyll synthesis were significantly restricted under the NaCl stress. Both of SOD and POD activities dropped first and then increased with NaCl concentration increasing, and CAT activity increased to a peak under 0.2% NaCl and then dropped. The content of soluble protein dropped under NaCl stress while that of proline, soluble sugar increased significantly. It was deduced that proline or soluble sugar working as osmotic potentials in cells played a key role in salt tolerance of C. cainito.

Cite this article

SONG Zhi-Yu , LIU Yu-Mei , CHI Min-Jie . Effect of NaCl Stress on Physiological Characteristics of Chrysophyllum cainito Leaves[J]. Subtropical Plant Science, 2017 , 46(03) : 215 -218 . DOI: 10.3969/j.issn.1009-7791.2017.03.003

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