منابع مشابه
Rice glycosyltransferase1 encodes a glycosyltransferase essential for pollen wall formation.
The pollen wall consists of an exine and an intine. The mechanism underlying its formation is not well understood. Glycosyltransferases catalyze the modification of biological molecules by attaching a single or multiple sugars and play key roles in a wide range of biological processes. We examined the role of GLYCOSYLTRANSFERASE1 (OsGT1) in pollen wall development in rice (Oryza sativa). This g...
متن کاملRole of Glycosyltransferases in Pollen Wall Primexine Formation and Exine Patterning.
The pollen cell wall is important for protection of male sperm from physical stresses and consists of an inner gametophyte-derived intine layer and a sporophyte-derived exine layer. The polymeric constituents of the robust exine are termed sporopollenin. The mechanisms by which sporopollenin is anchored onto microspores and polymerized in specific patterns are unknown, but the primexine, a tran...
متن کاملABORTED MICROSPORES Acts as a Master Regulator of Pollen Wall Formation in Arabidopsis.
Mature pollen is covered by durable cell walls, principally composed of sporopollenin, an evolutionary conserved, highly resilient, but not fully characterized, biopolymer of aliphatic and aromatic components. Here, we report that ABORTED MICROSPORES (AMS) acts as a master regulator coordinating pollen wall development and sporopollenin biosynthesis in Arabidopsis thaliana. Genome-wide coexpres...
متن کاملABCG26-mediated polyketide trafficking and hydroxycinnamoyl spermidines contribute to pollen wall exine formation in Arabidopsis.
Pollen grains are encased by a multilayered, multifunctional wall. The sporopollenin and pollen coat constituents of the outer pollen wall (exine) are contributed by surrounding sporophytic tapetal cells. Because the biosynthesis and development of the exine occurs in the innermost cell layers of the anther, direct observations of this process are difficult. The objective of this study was to i...
متن کاملRole of Glycosyltransferases in Pollen Wall Primexine Formation and Exine Patterning1[OPEN]
The pollen cell wall is important for protection of male sperm from physical stresses and consists of an inner gametophytederived intine layer and a sporophyte-derived exine layer. The polymeric constituents of the robust exine are termed sporopollenin. The mechanisms by which sporopollenin is anchored onto microspores and polymerized in specific patterns are unknown, but the primexine, a trans...
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ژورنال
عنوان ژورنال: Annals of Botany
سال: 2005
ISSN: 1095-8290,0305-7364
DOI: 10.1093/aob/mcj022