ISSN:
1399-3054
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Biology
Notes:
Changes in calmodulin (CaM) levels in embryonic axes of Cicer arietinum L. cv. Castellana germinated under three different conditions were measured. Abscisic acid (ABA) and a temperature of 30°C, which delay chick-pea germination, respectively decreased and increased the concentration of CaM compared to the values obtained under normal germinating conditions (H2O-25°C). The CaM concentration was higher in those zones of the axes undergoing an active cell division.The compartmentalization of CaM in 36-h-old embryonic axes grown under these three conditions was also measured. Cytosolic and mitochondrial CaM was higher in axes where a delayed germination occurred as well as in the cell walls of normally grown ones. On the other hand, CaM was higher in nuclear and microsomal fractions extracted from H2-O-25°C-treated axes. From these data we postulate that delayed germination could be an effect of altered CaM distribution in chick-pea embryonic axes.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1399-3054.1989.tb06177.x
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