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Relation of cell wall peroxidase activity with growth in epicotyls of Cicer arietinum. Effects of calmodulin inhibitors
Author(s) -
Sanchez Oskar J.,
Pan Alberto,
Nicolás Gregorio,
Labrador Emilia
Publication year - 1989
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.1399-3054.1989.tb06180.x
Subject(s) - peroxidase , epicotyl , calmodulin , cell wall , auxin , trifluoperazine , chemistry , biochemistry , enzyme , biology , botany , seedling , gene
Sánchez, O.J., Pan, A., Nicolás, G. and Labrador, E. 1989. Relation of cell wall peroxidase activity with growth in epicotyls of Cicer arietinum. Effects of calmodulin inhibitors. Peroxidases are bound ionically to cell walls in epicotyls of Cicer arietinum L. cv. Castellana. The cell wall peroxidase activity increases during the growth of epicotyls, being the lowest in 3‐day‐old epicotyls with high growth capacity. The cell wall phenolic compounds, postulated natural substrates of cell wall peroxidases, also increase during growth. The calmodulin inhibitors chlorpromazine and trifluoperazine decrease the elongation rate of epicotyls of Cicer arietinum. These inhibitors also cause an increase in the cell wall peroxidase activity and in the level of phenolic compounds. A possible regulatory effect of calmodulin on peroxidase activity is postulated.