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Calcium and Salt Toleration by Bean Plants
Author(s) -
LAHAYE PHILIP A.,
EPSTEIN EMANUEL
Publication year - 1971
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1971.tb01430.x
Subject(s) - phaseolus , calcium , sodium , salt (chemistry) , chemistry , nutrient , botany , wax , horticulture , agronomy , biology , biochemistry , organic chemistry
The role of calcium in the salt relations of the bean plant, Phaseolus vulgaris , was examined. Brittle wax bush bean plants were cultured in nutrient solutions containing 50 m M NaCl. In the absence of added calcium the plants showed a general breakdown of the roots. A low concentration of calcium in the nutrient solution (0.1 m M) prevented this. Without added calcium the plants absorbed and translocated sodium at such a rate that high concentrations of it built up in the leaves within two days. With increasing concentrations of calcium in the nutrient solution the leaves contained progressively less sodium, and at 3 m M CaSO 4 the concentrations of sodium in the leaves was equal to that of the control plants grown without addition of salt. Even after both roots and stems had reached a high concentration of sodium, the leaves of plants grown in the presence of adequate concentrations of calcium contained little sodium.