Persistent directional growth capability in Arabidopsis thaliana pollen tubes after nuclear elimination from the apex [PDF]
Nature Communications, 2021 Arabidopsis pollen contains a vegetative nucleus and two sperm cells that move to the apical region during pollen tube growth. Here, Motomura et al. make use of transgenic pollen with immobilized nuclei and show that, contrary to previous assumptions ...
Kazuki Motomura +7 more
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Geometric and mechanical guidance: Role of stigmatic epidermis in early pollen tube pathfinding in arabidopsis. [PDF]
PLoS Computational BiologyIn Arabidopsis thaliana, successful fertilisation relies on the precise guidance of the pollen tube as it navigates through the female tissues to deliver sperm cells to ovules.
Lucie Riglet +4 more
doaj +2 more sources
Identification and functional analysis of arabinogalactan protein expressed in pear pollen tubes
Journal of Integrative Agriculture, 2023 Arabinogalactan proteins (AGPs) are widely distributed in the plant kingdom and play a vital role during the process of plant sexual reproduction. In this study, we performed a comprehensive identification of the PbrAGPs expressed in pear pollen and ...
Hui-jun JIAO +6 more
doaj +2 more sources
Pollen-expressed RLCKs control pollen tube burst. [PDF]
Plant CommunIn angiosperms, the pollen tube enters the receptive synergid cell, where it ruptures to release its cytoplasm along with two sperm cells. This interaction is complex, and the exact signal transducers that trigger the bursting of pollen tubes are not well understood.
Xu YJ +5 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
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
MYB97, MYB101 and MYB120 function as male factors that control pollen tube-synergid interaction in Arabidopsis thaliana fertilization. [PDF]
PLoS Genetics, 2013 Pollen tube reception involves a pollen tube-synergid interaction that controls the discharge of sperm cells into the embryo sac during plant fertilization.
Yan Liang +8 more
doaj +1 more source
The Arabidopsis thaliana Class II Formin FH13 Modulates Pollen Tube Growth
Frontiers in Plant Science, 2021 Formins are a large, evolutionarily conserved family of actin-nucleating proteins with additional roles in regulating microfilament, microtubule, and membrane dynamics.
Eva Kollárová +2 more
doaj +1 more source
New Phytologist, 1989 summaryThis review considers pollen tube growth with regard to current information on pollen tube cytoplasm, wall structure and calcium ion interactions with pollen tubes. Pollen tubes have a marked cytoplasmic Polarity with a number of distinct zones along the tube, each with a characteristic complement of cytoplasmic and nuclear structures.
Martin W, Steer, Jill M, Steer
openaire +2 more sources
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
doaj +1 more source