Results 11 to 20 of about 26,188 (195)
A biological nanofoam: The wall of coniferous bisaccate pollen
Science Advances, 2022 The outer layer of the pollen grain, the exine, plays a key role in the survival of terrestrial plant life. However, the exine structure in different groups of plants remains enigmatic. Here, modern and fossil coniferous bisaccate pollen were examined to investigate the detailed three-dimensional structure and properties of the pollen wall.
Ruxandra Cojocaru +8 more
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AN OVERVIEW OF POLLEN AND ANTHER WALL DEVELOPMENT IN Catalpa bignonioides Walter (BIGNONIACEAE)
Trakya University Journal of Natural Sciences, 2017 Anther development in Catalpa bignonioides Walter was investigated from the sporogenous cell to the mature pollen grain stages to determine whether the pollen and anther wall development follows the basic scheme in angiosperms.
SEVİL Tütüncü Konyar
doaj +2 more sources
A Simple Protocol for the Immunolabelling of Arabidopsis Pollen Tube Membranes and Cell Wall Polymers [PDF]
Bio-Protocol, 2015 The pollen tube, a fast tip-growing cell, is an excellent model to study membrane and cell wall biosynthesis. Here, we describe a simple protocol using an easy to use device to perform immunofluorescence labelling of pollen tube membrane and cell wall ...
Marie Dumont +6 more
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Pollen wall patterns as a model for biological self-assembly. [PDF]
J Exp Zool B Mol Dev Evol, 2021 We are still far from being able to predict organisms' shapes purely from their genetic codes. While it is imperative to identify which encoded macromolecules contribute to a phenotype, determining how macromolecules self‐assemble independently of the ...
Radja A.
europepmc +2 more sources
A peptide-mediated, multilateral molecular dialogue for the coordination of pollen wall formation. [PDF]
Proc Natl Acad Sci U S A, 2022 International audienceSignificance Pollen viability depends on a tough external barrier called the pollen wall. Pollen wall components are produced by tapetum cells, which surround developing pollen grains within the anther.
Truskina J +8 more
europepmc +2 more sources
KOMPEITO, an Atypical Arabidopsis Rhomboid-Related Gene, Is Required for Callose Accumulation and Pollen Wall Development. [PDF]
Int J Mol Sci, 2022 Fertilization is a key event for sexually reproducing plants. Pollen–stigma adhesion, which is the first step in male–female interaction during fertilization, requires proper pollen wall patterning.
Kanaoka MM +6 more
europepmc +2 more sources
Pollen Sporoplasts: Dissolution of Pollen Walls [PDF]
Plant Physiology, 1985 4-Methylmorpholine N-oxide monohydrate (MMNO.H(2)O), a potent solvent for polysaccharides, is an effective vehicle for release of membrane-enclosed male gametophytes (sporoplasts) from spore walls. This release occurs in minutes when pollen (Lilium longiflorum Thunb.) is suspended in a melt of MMNO.H(2)O at 75 degrees C. Continued heating at 75 degrees
F A, Loewus +4 more
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POLLEN WALL ABORTION 1 is essential for pollen wall development in rice
Plant Physiology, 2022 Abstract The integrity of pollen wall structures is essential for pollen development and maturity in rice (Oryza sativa L.). In this study, we isolated and characterized the rice male-sterile mutant pollen wall abortion 1 (pwa1), which exhibits a defective pollen wall (DPW) structure and has sterile pollen.
Lisha Zhang +8 more
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Frontiers in Plant Science, 2022 Boron (B) is essential to plant development. However, excessive B is toxic to plants. This research was performed to evaluate the effects of B toxicity on cell wall architecture of Chinese chestnut (Castanea mollissima Blume) pollen tubes with emphasis ...
Weiwei Zhang +11 more
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Shipin gongye ke-ji, 2022 As one of the natural food, bee pollen is rich in a large number of bioactive components, including polysac-charides, proteins, lipids, and polyphenols, etc.
Lantao LI +7 more
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