The Extracellular Matrix of the Plant Cell: Location of Signal Perception, Transduction and Response
The plant protoplast is enclosed by a rigid corset mainly built from carbohydrates that, once formed during cell development, apparently remain invariable. This misleading perception is supported by the static appearance of plant cells in microscopic studies. For instance, a leaf typically will not change its habitus following full expansion. It is a module built for specific physiological functions and will be shed under sub-optimal conditions. However, during recent years, a large body of knowledge proving that the extracellular matrix (ECM) is responsive to a large array of internal and external stimuli (some of which will be discussed below) has accumulated. In the following discussion, “internal signals” are considered to be produced endogenously in the plant, whereas environmental parameters may act as external stimuli.
KeywordsGuard Cell Anion Channel Extracellular Protease Jerusalem Artichoke Expansin Gene
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