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Enhancement of Intact Bean Leaf Senescence by NaCl Salinity
Author(s) -
PRISCO JOSE TARQUINIO,
O'LEARY JAMES W.
Publication year - 1972
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.1399-3054.1972.tb03582.x
Subject(s) - phaseolus , salinity , salt (chemistry) , chlorophyll , nutrient , senescence , biology , botany , chemistry , rna , horticulture , biochemistry , ecology , gene , microbiology and biotechnology
Red kidney bean ( Phaseolus vulgaris L.) plants were grown in nutrient solution and in nutrient solution plus four bars of added NaCl. Chlorophyll and protein decay occurred much more rapidly in intact leaves from plants subjected to four bars of added NaCl in the growth medium than in intact leaves from plants without added NaCl. Ribonucleic acid (RNA) content in intact leaves of salt treated plants was higher than in intact leaves from plants grown in nutrient solution alone. However, the tendency for RNA content variation in leaves during the experimental period was the same for both control and salt treated plants. The results support the idea that salinity enhances senescence and suggests that hormone imbalance plays an important role in this process.