The polyketide synthase OsPKS2 is essential for pollen exine and Ubisch body patterning in rice
نویسندگان
چکیده
منابع مشابه
LAP5 and LAP6 encode anther-specific proteins with similarity to chalcone synthase essential for pollen exine development in Arabidopsis.
Pollen grains of land plants have evolved remarkably strong outer walls referred to as exine that protect pollen and interact with female stigma cells. Exine is composed of sporopollenin, and while the composition and synthesis of this biopolymer are not well understood, both fatty acids and phenolics are likely components. Here, we describe mutations in the Arabidopsis (Arabidopsis thaliana) L...
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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...
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15 صفحه اولThe classical Ubisch bodies carry a sporophytically produced structural protein (RAFTIN) that is essential for pollen development.
Pollen fecundity is crucial to crop productivity and also to biodiversity in general. Pollen development is supported by the tapetum, a metabolically active sporophytic nurse layer that devotes itself to this process. The tapetum in cereals and a vast majority of other plants is of the nonamoeboid type. Unable to reach out to microspores, it secretes nutrients into the anther locule where the m...
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ژورنال
عنوان ژورنال: Journal of Integrative Plant Biology
سال: 2017
ISSN: 1672-9072
DOI: 10.1111/jipb.12574