|Table of Contents|

PHYSIOLOGICAL BEHAVIOR OF K+,Na+ AND Ca2+ IN THE RHIZOSPHERE OF NaCl AND Na2CO3 STRESSED PUCCINELLIA TENUIFLORA(PDF)

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

Issue:
1997 02
Page:
112-118
Research Field:
Articles
Publishing date:

Info

Title:
PHYSIOLOGICAL BEHAVIOR OF K+,Na+ AND Ca2+ IN THE RHIZOSPHERE OF NaCl AND Na2CO3 STRESSED PUCCINELLIA TENUIFLORA
Author(s):
Shi Decheng Zhao Kefu
1. Life Science College, Normal University, Changchun 130024;
2. Institute of Plant Stress, Shandong Normal University, Jinan 250014
Keywords:
ion activityNaClNa2CO3CalciumPuccinellia tenuiflora
CLC:
-
PACS:
DOI:
-
DocumentCode:

Abstract:
The Plants of Puccinellia tenuiflora were stressed by the treatment with the nutrient solutions containing 25-600 mmol·L-1 NaCl or 12.5-200 mmol·L-1 Na2CO3. The physiological behavior of K+,Na+,and Ca2+ in the rhizosphere of the plants was analyzed. The effects of Na2CO3 on K+, Na+,and Ca2+ activities in the solutions were greater than those of NaCl. Na2CO3 made Ca2+ activity greatly decrease. K+ and Na+ contents in P. tenuiflora roots were closely related to K+, Na+,and Ca2+activities in the nutrient solutions. For the two salt-stresses,there was an identical curvilinear relationship between K+ and Na+ contents in the roots and Ca2+ activity/(Na+ activity)2 ratio in the nutrient solutions,which indicted that the K+ and Na+ absorptions of P. tenuiflora were closely related to Ca2+ activity/(Na+ activity)2 ratio in the rhizosphere. K+ and Na+ contents in P. tenuiflora shoots were related to K+ and Na+ contents in its roots. When K+ content in roots (DW) ranged between 0.38-0.52 mmol·g-1,that in shoots was not signifcantly changed, when Na+ content in roots was lower, that in shoots gently increased with the increasing of Na+ content in roots, but when Na+ content in the roots reached to a certain extent,that in shoots turned to a steep rise, which implied that the regulation and control of K+ and Na+ metabolism were also express in the transport course from roots to shoots.

References

[1] 石德成,殷立娟.Na<sub>2</sub>C0<sub>3</sub>胁迫下羊草苗的胁变反应及其数学分析.植物学报.1992.34:386~393
[2] 石德成,殷立娟.盐( NaCl)与碱(Na<sub>2</sub>C0<sub>3</sub>)对星星草胁迫作用的差异.植物学报.1993.35:144~149
[3] Cramer G R,laiichil A. lon activities in solution in relation to Na<sup>+</sup>-Ca<sup>2+</sup> interactions at the plasmalemma. J Exp Bot. 1986.37:321~330
[4] Cramer G R,Epstein E,Laiichli A. Na-Ca interaction in barley seedlings:relationship to ion transport and growth. Plant Cell Environ. 1989.12:551~558
[5] Mohammed S.Akbar M.Neve H V. Effect of Na/Ca and Na/K ratios in saline culture solution on the growth and mineral nutrition of rice (Oryza sativa L.). Plant and Soil. 1987.104:57~62
[6] Ehret D L,Redmann R E,Harvey B L el al. Salinity-induced calcium deficiencies in wheat and barley. Plant Soil 1990.128:143~151
[7] Suhayda C G, Redmann RE, Harvey B L et al. Comparative response of cultivated and wild barley species to salinity stress and calcium supply. Crop Sci. 1992, 32:154~163
[8] Lynch J,La&#252;chli A.Salinity effects intracellular calcium in corn root protoplasts. Plant Plysiol. 1988.87:351~356
[9] Cramer G R,La&#252;chli A,Epstein E. Effects of NaCl and CaCl<sub>2</sub> on ion activities in complex nutrient solutions and root growth of cotton. Plant Physiol. 1986,81:792~797
[10] Sposito G,Mattigod S V. GEOCHEM;A computer program for the calculation of chemical equilibria in soil solutions and other natural water systens. Univ. of California,Riverside:The Kearney Foundation of Soil Science, 1980
[11] Azaiuh H,Gunse B,Steudle E. Effects of NaCl and CaCl<sub>2</sub> on water transport across root cell of maize (Zea mays L. ) seedlings. Plant Physiol. 1992.99:886~894
[12] Cheeseman J M. Wickens L K. Control of Na<sup>+</sup> and K<sup>+</sup> transport in Spergularria marim. I. Effects of plant size,tissue ion contents and root-shoot ratio at moderate salinity. Physiol Plant. 1986.67:7~14
[13] Jeschke W D. Shoot-dependent regulation of sodium and potassium fluxes in roots of whole barley seedlings. J Exp Bot. 1982, 33:601~618

Memo

Memo:
-
Last Update: 1900-01-01