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EFFECT OF NaCl STRESS ON Na+, Ca2+ CONCENTRATIONS IN APOPLAST AND SYMPLAST OF THE EXPANDED LEAVES OF SORGHUM BICOLOR(PDF)

Chinese Journal of Applied & Environmental Biology[ISSN:1006-687X/CN:51-1482/Q]

Issue:
1997 04
Page:
309-312
Research Field:
Publishing date:

Info

Title:
EFFECT OF NaCl STRESS ON Na+, Ca2+ CONCENTRATIONS IN APOPLAST AND SYMPLAST OF THE EXPANDED LEAVES OF SORGHUM BICOLOR
Author(s):
Wang Baoshan Zou Qi Zhao Kefu
1. Institute of Plant Stress, Shandong Teachers’University, Jinan 250014;
2. Dept.of Basic of Basic Course, Shandong Agricultural University, Taian 270018
Keywords:
NaCl stressSorghumapoplastsymplastNa+ Ca2+ concentrations
CLC:
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PACS:
DOI:
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DocumentCode:

Abstract:
The growth inhibition, decrease of water content and plasma membrane permeability of the expanded leavesof salt-sensitive Sorghum (Tanggaoliang, T)were significantly peater than those of salt-tolerant Sorghum(Dujiaohu, D)under the stress of 200 nmol/L NaCl for 14 d.Na+ concentrations in apoplast and symplast were allincreased significantly by NaCl stress, and the increased amount in apoplast was more than that in symplast, andthat of T more than that of D.ContrasUy, Ca2+ concentrations in apoplast and symplast were significantlydecreased by NaCl stress.The results showed that the significant increase of Na+ concentration in apoplast did notalter cell turgor pressure and Ca2+ on the plasmalemma possibly replaced by the increased Na+ in apoplastdamaged the selective permeability of plasmalemma, which induced salt injury.

References

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