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Sporopollenin monomer biosynthesis in arabidopsis
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Journal Article
Sporopollenin monomer biosynthesis in arabidopsis
2013
Overview
Land plants have evolved aliphatic biopolymers that protect their cell surfaces against dehydration, pathogens, and chemical and physical damage. In flowering plants, a critical event during pollen maturation is the formation of the pollen surface structure. The pollen wall consists essentially of the microspore-derived intine and the sporophyte-derived exine. The major component of the exine is termed sporopollenin, a complex biopolymer. The chemical composition of sporopollenin remains poorlycharacterized because it is extremely resistant to chemical and biological degradation procedures. Recent characterization of Arabidopsis thaliana genes and corresponding enzymes involved in exine formation has demonstrated that the sporopollenin polymer consists of phenolic and fatty acid-derived constituents that are covalently coupled by ether and ester linkages. This review illuminates the outlines of a biosynthetic pathway involved in generating monomer constituents of the sporopollenin biopolymer component of the pollen wall.
Publisher
Springer Nature B.V
Subject
