Results 261 to 270 of about 220,475 (309)

Proteomics of Pollen Development and Germination

Journal of Proteome Research, 2007
In higher plants, pollen grains represent the vestiges of a highly reduced male gametophyte generation. After germination, the pollen tube delivers the sperm cells by tip-growing to the embryo sac for fertilization. Besides the intrinsic importance for sexual reproduction, pollen development and germination serve as an attractive system to address ...
Shaojun, Dai, Tai, Wang, Xiufeng, Yan, Sixue, Chen   +3 more
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Pollen Tube Development

2010
Pollen tubes grow rapidly in a strictly polarized manner as they transport male reproductive cells through female flower tissues to bring about fertilization. Vegetative pollen tube cells are an excellent model system to investigate processes underlying directional cell expansion.
Mark A, Johnson, Benedikt, Kost
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Evolution of development of pollen performance

2019
With the origin of pollination in ancient seed plants, the male gametophyte ("pollen") began to evolve a new and unique life history stage, the progamic phase, a post-pollination period in which pollen sexual maturation occurs in interaction with sporophyte-derived tissues.
Joseph H, Williams, John B, Reese
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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, Alexandra H, Wortley, John J, Skvarla, John R, Rowley   +3 more
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SlMKK4 is responsible for pollen development in tomato

Plant Physiology and Biochemistry
The development of viable pollen is a determinant of male fertility and plays an essential role in the reproductive process of angiosperms. Mitogen-activated protein kinase (MAPK) cascades modulate diverse aspects of plant growth, but their involvement in post-meiotic pollen development is unclear.
Lifei Chen, Leiqing Chen, Hong Zhang, Chaoyue Xi, Yulin Fang, Yiru Lai, Changtian Pan, Gang Lu, Yunkun Wu   +8 more
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Pollen allergens: development and function

Sexual Plant Reproduction, 1996
Pollen allergens interact with the human immune system and the resulting IgE antibodies provide specific probes for their identification and characterisation. In one case, grass allergenic proteins are expressed late in pollen development coincident with the laying down of reserves.
R. B. Knox, C. Suphioglu
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Evolution of a Novel Phenolic Pathway for Pollen Development

Science, 2009
From Retrogene to Phenolic Metabolism Metabolic plasticity, which involves the creation of new genes, is an essential feature of plant adaptation and speciation. Studying plants from the mustard family, Matsuno et al.
Matsuno, Michiyo, Compagnon, Vincent, Schoch, Guillaume A., Schmitt, Martine, Debayle, Delphine, Bassard, Jean-Etienne, Pollet, Brigitte, Hehn, Alain, Heintz, Dimitri, Ullmann, Pascaline, Lapierre, Catherine, Bernier, François, Ehlting, Jürgen, Werck-Reichhart, Danièle   +13 more
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The development of a pollen dispersal system

Environmental and Experimental Botany, 1987
Abstract A pollen dispersal system for rapidly establishing known populations of pollen grains on growth media for in vitro studies is described. The system consists of a mixing chamber where the pollen grains are suspended in an air stream and a dispersal chamber where the pollen grains are directed to the growth media surface.
Peter F. Waldron, Lyle E. Craker
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Pollen: Structure and Development

2011
Pollen grains contain the highly reduced haploid microgametophyte generation in seed plants that establishes the male germline during sexual reproduction. Pollen protects the germline from environmental injury, promotes gamete dispersal and ensures delivery of a pair of sperm cells to the female gametes via the pollen tube.
Borg, M. ; https://orcid.org/0000-0002-3982-3843, Twell, D.   +1 more
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The ultrastructure of pollen development in gymnosperms

Bulletin de la Société Botanique de France. Actualités Botaniques, 1978
SummaryA review of the ultrastructure of pollen development—from pre-meiosis to mature pollen—in Podoearpus and Pinus.
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