›› 2017, Vol. 46 ›› Issue (03): 215-218.DOI: 10.3969/j.issn.1009-7791.2017.03.003

• 植物生理生化与分子生物学 • 上一篇    下一篇

NaCl 胁迫对星苹果叶片生理特性的影响

宋志瑜,刘育梅,池敏杰   

  1. (1.福建省亚热带植物研究所,福建省亚热带植物生理生化重点实验室,福建 厦门 361006;2.厦门华侨亚热带植物引种园,福建 厦门 361002)
  • 收稿日期:2017-05-04 修回日期:2017-06-08 出版日期:2017-09-30 发布日期:2017-09-30
  • 通讯作者: 刘育梅
  • 作者简介:宋志瑜,本科,高级农艺师,从事园林绿化及快繁技术研究。
  • 基金资助:
    厦门市科技计划项目(3502Z20092023、3502Z20142006)

Effect of NaCl Stress on Physiological Characteristics of Chrysophyllum cainito Leaves

SONG Zhi-yu,LIU Yu-mei,CHI Min-jie   

  1. (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:2017-05-04 Revised:2017-06-08 Online:2017-09-30 Published:2017-09-30
  • Contact: LIU Yu-mei

摘要: 为研究星苹果Chrysophyllum cainito的耐盐能力及其在NaCl胁迫下的生理特性变化,以0、0.2%、0.4%、0.6% NaCl溶液分别对盆栽幼苗进行胁迫处理,测定叶片的叶绿素、渗透调节物质、丙二醛含量及抗氧化物酶活性。结果表明,在NaCl胁迫下,星苹果叶片的叶绿素合成受到明显抑制;超氧化物歧化酶(SOD)和过氧化物酶(POD)的活性随NaCl浓度增加而呈现先降后升现象;过氧化氢酶(CAT)活性则是先升后降,在0.2% NaCl处理时达最高;可溶性蛋白含量与处理浓度呈负相关;脯氨酸、可溶性糖含量和对照相比有显著增加,两者在胁迫过程中起着重要的渗透调节作用。

关键词: 星苹果, NaCl胁迫, 生理特性

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.

Key words: Chrysophyllum cainito, NaCl stress, physiological characteristic

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