期刊
TRENDS IN PLANT SCIENCE
卷 12, 期 7, 页码 310-316出版社
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.tplants.2007.06.001
关键词
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Successful defense depends on the ability of the plant to recognize an attacking 'enemy' as early as possible. Early defense responses require enemy-initiated signaling cascades. Their activation ensures an induced response that is quantitative, timely and coordinated with other activities of the host cells. Damage-induced ion imbalances and modulations of channel activities are the first events occurring in the plasma membrane and result in rapid perturbations of the plasma membrane potential (V-m) involving variations of cytosolic Ca2+ concentrations. Interacting downstream networks of kinases and phytohormones mediate the signal and result in concerted gene activation. Here we review and discuss early events occurring before herbivore attack-related gene expression that are responsible for cascades of events and signal transductions, eventually leading to indirect and direct plant responses.
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