Penetration of the stigma and style elicits a novel transcriptome in pollen tubes, pointing to genes critical for growth in a pistil. [PDF]
PLoS Genetics, 2009 Pollen tubes extend through pistil tissues and are guided to ovules where they release sperm for fertilization. Although pollen tubes can germinate and elongate in a synthetic medium, their trajectory is random and their growth rates are slower compared ...
Yuan Qin +8 more
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Pollen tube emergence is mediated by ovary-expressed ALCATRAZ in cucumber. [PDF]
Nat Commun, 2023 Pollen tube guidance within female tissues of flowering plants can be divided into preovular guidance, ovular guidance and a connecting stage called pollen tube emergence.
Cheng Z +18 more
europepmc +3 more sources
Editorial: Regulation of pollen tube growth, volume II. [PDF]
Front Plant Sci, 2023 The pollen tube is an extension produced by the pollen grain when conditions are favorable; thus, the pollen tube is important in seed plant reproduction because it transports male gametes.
Del Duca S +2 more
europepmc +3 more sources
RALF signaling pathway activates MLO calcium channels to maintain pollen tube integrity. [PDF]
Cell Res, 2023 Pollen tube tip growth requires intricate Ca2+ signaling. Recent studies have also identified rapid alkalization factor (RALF)-family peptides and their receptors as critical components for pollen tube tip growth and integrity.
Gao Q +6 more
europepmc +3 more sources
Possible molecular mechanisms of persistent pollen tube growth without de novo transcription [PDF]
Frontiers in Plant Science, 2022 The vegetative cell nucleus proceeds ahead of a pair of sperm cells located beneath the pollen tube tip during germination. The tip-localized vegetative nucleus had been considered to play a pivotal role in the control of directional pollen tube growth ...
Kazuki Motomura +6 more
doaj +2 more sources
Pollen Germination and Pollen Tube Growth in Gymnosperms. [PDF]
Plants (Basel), 2021 Pollen germination and pollen tube growth are common to all seed plants, but these processes first developed in gymnosperms and still serve for their successful sexual reproduction. The main body of data on the reproductive physiology, however, was obtained on flowering plants, and one should be careful to extrapolate the discovered patterns to ...
Breygina M, Klimenko E, Schekaleva O.
europepmc +6 more sources
Editorial: Regulation of Pollen Tube Growth [PDF]
Frontiers in Plant Science, 2021 In angiosperms, the pollen tube is a simple system composed of the vegetative cell and the two sperm cells which, nevertheless, accomplishes a very important process, essential for the life of flowering plants on Earth, i.e., sexual reproduction.
Cai G. +2 more
core +7 more sources
WD40-domain protein GORI is an integrative scaffold that is required for pollen tube growth in rice [PDF]
Plant Signaling & Behavior, 2023 The pollen tube plays a critical role in angiosperm plants by delivering sperm gametes for double fertilization. Although the molecular mechanisms underlying pollen tube germination and growth are crucial to crop plants, they are poorly understood. Here,
Yu-Jin Kim, Ki-Hong Jung
doaj +2 more sources
Self S-RNase reduces the expression of two pollen-specific COBRA genes to inhibit pollen tube growth in pear [PDF]
Molecular Horticulture, 2023 Due to self-incompatibility (SI) prevents self-fertilization, natural or artificial cross-pollination has been conducted in many orchards to stabilize fruit yield.
Lei Wu +8 more
doaj +2 more sources
Effects of temperature on pollen viability and in vivo pollen tube growth in Citrus sinensis [PDF]
Journal of Applied Botany and Food Quality, 2022 Temperature is the major factor in global warming and strongly influences the success of plant sexual reproduction. Therefore, there isan urgent need to assess the vulnerability of species for breeding and planning effective actions.
Senay Karabiyik
doaj +3 more sources