干旱区研究

Arid Zone Research >

2014 , Vol. 31 >Issue 6: 1086 - 1092

DOI: https://doi.org/10.13866/j.azr.2014.06.16

Biological Resources

Response on Salsola passerina Seedlings Root, Stem and Leaf’s Ionic Homeostasis Under NaCl Salt Stress

  • ZHAO Xin ,
  • SHI Yong ,
  • ZHANG Ji-wei ,
  • LI Xin-rong
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  • Gansu Provincial Key Laboratory of Cold and Arid regions Stress Physiology and Ecology, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, Gansu, China

Received date: 2013-04-07

  Revised date: 2013-07-12

  Online published: 2014-11-25

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Abstract

This study focused on absorption and distribution of main ions in roots, stems and leaves of Salsola passerina seedlings which were soaked in NaCl solutions with concentrations of 0, 100, 200, 300, 400 mmol·L-1 under salt stresses for 5 d and 10 d, respectively. The results showed that with the increase of the NaCl concentration, Na+ in seedlings was reduced but K+ was significantly increased; K+/Na+ ratio in leaves were increased accordingly; Na+ content in leaves was lower than that in roots and stems; Cl- content was decreased in the roots, stems and leaves while Ca2+ and Si4+ contents were increased. Under the same salt stress concentrations the K+/Na+ ratio gradually raised from roots to the leaves which presented a characteristic of the plant selectively transporting the K+ from roots to leaves while preventing Na+ entering into leaves.

Key words： salt stress; Salsola passerina; ion content; ion transportation; selectivity coefficient

Cite this article

ZHAO Xin , SHI Yong , ZHANG Ji-wei , LI Xin-rong . Response on Salsola passerina Seedlings Root, Stem and Leaf’s Ionic Homeostasis Under NaCl Salt Stress[J]. Arid Zone Research, 2014 , 31(6) : 1086 -1092 . DOI: 10.13866/j.azr.2014.06.16

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