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The effect of ergosterol, ergocalciferol and cholecalciferol on calcium‐controlled peroxidase secretion by sugarbeet cells
Author(s) -
Kevers C.,
Sticher L.,
Penel C.,
Greppin H.,
Gaspar Th.
Publication year - 1983
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.1399-3054.1983.tb00723.x
Subject(s) - ergocalciferol , calcium , ergosterol , peroxidase , cholecalciferol , ionophore , vitamin d and neurology , vitamin , biochemistry , secretion , chemistry , biology , endocrinology , enzyme , organic chemistry
Provitamin D 2 (ergosterol), vitamins D 2 and D 3 reduced the calcium‐mediated peroxidase secretion in three types of sugarbeet cells in suspension cultures. Vitamin D 2 was the most effective in habituated non‐organogenic cells which were the less sensitive to calcium; provitamin D 2 was the most effective in habituated organogenic cells, while normal non‐organogenic cells were equally sensitive to the three types of vitamin D. The calcium ionophore A23187 slightly restricted peroxidase release in all cases, except in the habituated organogenic cells in the presence of calcium where it exerted a promotive effect. The inhibiting effect of vitamin D 2 was not counteracted by the ionophore except in this habituated organogenic cell line.