Pollen tube - Wikipedia
网页A pollen tube is a tubular structure produced by the male gametophyte of seed plants when it germinates. Pollen tube elongation is an integral stage in the plant life cycle.
Bioenergetics of pollen tube growth in - Nature
网页2022年12月19日 · Pollen tube is the fastest-growing plant cell. Its polarized growth process consumes a tremendous amount of energy, which involves coordinated energy fluxes between...
Pollen tube | plant anatomy | Britannica - Encyclopedia Britannica
网页The pollen tube ultimately enters an ovule through the micropyle and penetrates one of the sterile cells on either side of the egg (synergids). These synergids begin to degenerate immediately after pollination. Pollen tubes can reach great lengths, as in corn, where the corn silk consists… Read More
Mechanics of Pollen Tube Elongation: A Perspective - Frontiers
网页2020年10月19日 · Pollen tube (PT) serves as a vehicle that delivers male gametes (sperm cells) to a female gametophyte during double fertilization, which eventually leads to the seed formation. It is one of the fastest elongating structures in plants. Normally, PTs traverse through the extracellular matrix at the transmitting tract after penetrating the stigma.
Plasma membrane H+-ATPases sustain pollen tube growth and ... - Nature
网页2020年5月14日 · Pollen tubes are highly polarized tip-growing cells that depend on cytosolic pH gradients for signaling and growth. Autoinhibited plasma membrane proton (H +) ATPases (AHAs) have been proposed...
Pollen tube - Latest research and news | Nature
网页2023年5月5日 · The pollen tube is a growth from a pollen grain down into the flower style which allows two sperm cells to pass, one to the ovum within the ovule, and the other to the central cell of the...
The Diversity of the Pollen Tube Pathway in Plants: Toward an ...
网页The pollen tube grows through a stylar canal or a stylar transmitting tissue, and reaches the locule cavity of the ovary where the ovule is located.
Pollen Tube and Plant Reproduction - PMC - National Center for ...
网页2019年1月27日 · The pollen tube was a fundamental step forward in the evolution of terrestrial plants; in fact, it allowed plants to liberate themselves from water demand during reproduction. The importance of this simple organism (the plant gametophyte) is also due to its peculiar cytological structure, characterized by tip growth and a cell wall that is not ...
Mechanics and hydraulics of pollen tube growth - Dumais - 2021
网页2021年9月7日 · For pollen tubes, tip growth is how the male gametophyte reaches the ovule nestled deep into the pistil of the flower to achieve fertilisation (Williams et al., 2016). Tip growth is the morphogenetic strategy adopted by walled cells whenever their function requires growing within a complex mechanical environment.
Pollen Tube - an overview | ScienceDirect Topics
网页Pollen tubes are the fastest growing cells in nature with elongation rates of > 20 μm min − 1. The pollen tubes grow as fast as possible through the stigma tissue towards the egg cells where they release two sperm cells for fertilization.