Results 11 to 20 of about 57,214 (301)
Signalling pathways in pollen germination and tube growth [PDF]
Protoplasma, 2006 Summary. Signalling is an integral component in the establishment and maintenance of cellular identity. In plants, tip-growing cells represent an ideal system to investigate signal transduction mechanisms, and among these, pollen tubes (PTs) are one of ...
Camacho, L. +5 more
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Durotropic Growth of Pollen Tubes [PDF]
Plant Physiology, 2020 To reach the female gametophyte, growing pollen tubes must penetrate different tissues within the pistil, the female reproductive organ of a flower. Past research has identified various chemotropic cues that guide pollen tubes through the transmitting tract of the pistil, which represents the longest segment of its growth path.
Ronny Reimann +9 more
openaire +3 more sources
Editorial: Regulation of Pollen Tube Growth. [PDF]
Front Plant Sci, 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. In its simplicity, the pollen tube allowed plants to reproduce on land, even in the absence of water ...
Cai G +2 more
europepmc +7 more sources
POLLEN TUBE GROWTH IN MANDARIN
Revista Fitotecnia Mexicana, 2022 Pollen tube growth was studied in cvs. Monica, Reyna, Dancy, and Satsuma mandarin (Citrus reticulata unshiu Marc). Pollen tubes were stained with lacmoid and observed with a white light microscope. Lacmoid stained the callose brilliant blue. Pollen grains deposited on the stigma varied from 367 to 4170 among the four cultivars.
Norma Lidia Gómez Alvarado +4 more
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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
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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
Pollen Germination and Tube Growth in Northern Highbush Blueberry are Inhibited by Extreme Heat
HortScience, 2023 The increasing intensity and frequency of extreme heat events threaten crop productivity globally. Certain phases of plant reproduction necessary for fertilization are highly sensitive to extreme heat, particularly during pollen development, germination,
Jenna Walters, Rufus Isaacs
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Mechanics and hydraulics of pollen tube growth [PDF]
New Phytologist, 2021 SummaryAll kingdoms of life have evolved tip‐growing cells able to mine their environment or deliver cargo to remote targets. The basic cellular processes supporting these functions are understood in increasing detail, but the multiple interactions between them lead to complex responses that require quantitative models to be disentangled.
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Regulation of Pollen Tube Growth by Transglutaminase [PDF]
Plants, 2013 In pollen tubes, cytoskeleton proteins are involved in many aspects of pollen germination and growth, from the transport of sperm cells to the asymmetrical distribution of organelles to the deposition of cell wall material. These activities are based on the dynamics of the cytoskeleton.
Giampiero Cai +2 more
openaire +6 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