Abstract
The phytohormone ethylene is involved in many physiological and developmental processes of plants, as well as in stress responses and in the development of disease resistance. Fusicoccin (FC) is a well-known phytotoxin, that in sycamore (Acer pseudoplatanus L.) cultured cells, induces a set of stress responses, including synthesis of ethylene. In this study, we investigated the possible involvement of ethylene in the FC-induced stress responses of sycamore cells by means of Co(2+), a well-known specific inhibitor of ethylene biosynthesis. Co(2+) inhibited the accumulation of dead cells in the culture, the production of nitric oxide (NO) and of the molecular chaperone Binding Protein (BiP) in the endoplasmic reticulum induced by FC. By contrast, Co(2+) was ineffective on the FC-induced accumulation of cells with fragmented DNA, production of H(2)O(2) and release of cytochrome c from the mitochondrion, and only partially reduced the accumulation of regulative 14-3-3 proteins in the cytosol. In addition, we compared the effect of FC on the above parameters with that of the ethylene-releasing compound ethephon (2-chloroethane phosphonic acid). The results suggest that ethylene is involved in several stress responses induced by FC i...Continue Reading
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Mar 29, 2014·Ecotoxicology and Environmental Safety·Qing YangXiaohua Huang
Feb 6, 2017·Frontiers in Plant Science·Yurong MaQingguo Wang
Jan 23, 2021·Plants·Massimo Malerba, Raffaella Cerana
Mar 7, 2021·International Journal of Molecular Sciences·Massimo Malerba, Raffaella Cerana
Jul 5, 2021·Journal of Plant Physiology·Zalán CzékusPéter Poór