How do secretory products cross the plant cell wall to be released? A new hypothesis involving cyclic mechanical actions of the protoplast
Author(s) -
Élder Antônio Sousa Paiva
Publication year - 2016
Publication title -
annals of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.567
H-Index - 176
eISSN - 1095-8290
pISSN - 0305-7364
DOI - 10.1093/aob/mcw012
Subject(s) - protoplast , cell wall , biology , secretion , microbiology and biotechnology , biophysics , periplasmic space , plant cell , cell , vesicle , biochemistry , membrane , escherichia coli , gene
In plants, the products of secretory activity leave the protoplast and cross the plasma membrane by means of transporters, fusion with membranous vesicles or, less commonly, as result of disintegration of the cell. These mechanisms do not address an intriguing question: How do secretory products cross the cell wall? Furthermore, how do these substances reach the external surface of the plant body? Such diverse substances as oils, polysaccharides or nectar are forced to cross the cell wall and, in fact, do so. How are chemical materials that are repelled by the cell wall or that are sufficiently viscous to not cross passively released from plant cells?
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