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The process of the landing of pollen on the stigma, pollen tube growth and entry of germ cells in the ovule are the events covered in the germination of pollen grains. Let us study each event in detail.
Oct 1, 2023 · Pollen germination is a prerequisite for double fertilization of flowering plants. A comprehensive understanding of the structural and molecular basis of pollen germination holds great potential for crop yield improvement.
Pollen, the male gametophyte of higher plants, is a biological system playing a central role in sexual plant reproduction (Cresti et al., 1992). The understanding of the mechanisms controlling the various aspects of pollen tube development has a direct relevance to...
Pollen germination and tube growth are processes fundamental for reproduction of flowering plants. Germinating and mature maize pollens were compared via gel-based proteomic tools (Zhu et al., 2007 ).
Explain cross-pollination and the ways in which it takes place. Describe the process that leads to the development of a seed. Define double fertilization. In angiosperms, pollination is defined as the placement or transfer of pollen from the anther to the stigma of the same flower or another flower.
Mar 25, 2021 · Pollen germination and tube growth precede seed set and are critical for successful fertilization (Van Tussenbroek et al., 2016). The primary process influenced by pollen competition among early angiosperms might be pollen germination (Williams, 2012b).
Many aspects of Angiosperm pollen germination and tube growth are discussed including mechanisms of dehydration and rehydration, in vitro germination, pollen coat compounds, the dynamic involvement of cytoskeletal elements (actin, microtubules), calcium ion fluxes, extracellular matrix elements (stylar arabinogalactan proteins), and control ...
A Fruitful Journey: Pollen Tube Navigation from Germination to Fertilization. Mark A. Johnson 1, Jeffrey F. Harper 2, and Ravishankar Palanivelu 3. View Affiliations. Vol. 70:809-837 (Volume publication date April 2019) https://doi.org/10.1146/annurev-arplant-050718-100133. First published as a Review in Advance on March 01, 2019.
Oct 15, 2009 · The egg, together with central cell and synergids, forms a functional female germ unit (FGU) to fulfil the task of pollen tube attraction, sperm release and transportation, and double fertilization. This chapter reviews our current understanding of pollen germination and tube growth, with a focus on Arabidopsis and other model species.
Jun 20, 2024 · Following pollination, the pollen grain absorbs water from the stigmatic exudate and germinates to produce a pollen tube. In the life cycle of flowering plants, the pollen tube serves as a transient structural link between the end of the male gametophytic phase and the beginning of the sporophytic phase.
