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Pollen wall pattern in Arabidopsis

Science Bulletin, 2016
The pollen wall is a solid and variously sculptured structure. This pattern is determined inside a tetrad. During meiosis, the callose wall is formed outside of the meiocyte/microspore to form a tetrad. Then, primexine is deposited between the callose wall and the microspore plasma membrane which will become undulated. The sporopollenin deposits on top
Zhong-Nan Yang
exaly   +2 more sources

Genetic and Biochemical Mechanisms of Pollen Wall Development

open access: yesTrends in Plant Science, 2015
The pollen wall is a specialized extracellular cell wall matrix that surrounds male gametophytes and plays an essential role in plant reproduction. Uncovering the mechanisms that control the synthesis and polymerization of the precursors of pollen wall components has been a major research focus in plant biology.
Shi, J.   +4 more
openaire   +4 more sources

A dye combination for the staining of pollen coat and pollen wall

Plant Reproduction, 2021
The pollen coat, which forms on the pollen surface, consists of a lipid-protein matrix. It protects pollen from desiccation and is involved in adhesion, pollen-stigma recognition, and pollen hydration during interactions with the stigma. The classical methods used for pollen coat observation are scanning and transmission electron microscopy.
Xin-Lei Jia   +11 more
openaire   +2 more sources

Characteristics of pollen diffusates and pollen wall cytochemistry in poplars

Journal of Cell Science, 1980
ABSTRACT Pollen diffusates, known to be important in pollen-stigma interactions controlling inter-specific incompatibility between Populus deltoides and Populus alba, have been partly characterized and shown to contain more than 20 protein bands by polyacrylamide gel electro-phoresis, at least 4 of these being glycoproteins.
A E, Ashford, R B, Knox
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The Basic Pollen Wall Types in Araceae

International Journal of Plant Sciences, 1999
An ultrastructural investigation of 60 species, representing 47 genera, of Araceae showed two basic pollen wall types, each with two subtypes. The two main types are distinguished by presence (type 1) or absence (type 2) of an acetolysis‐resistant ektexine.
Weber, Martina   +2 more
openaire   +2 more sources

Pollen wall development in flowering plants

New Phytologist, 2007
SummaryThe outer pollen wall, or exine, is more structurally complex than any other plant cell wall, comprising several distinct layers, each with its own organizational pattern. Since elucidation of the basic events of pollen wall ontogeny using electron microscopy in the 1970s, knowledge of their developmental genetics has increased enormously ...
Stephen, Blackmore   +3 more
openaire   +2 more sources

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