Results 21 to 30 of about 5,456,216 (290)
Pollen-specific pectin methylesterase involved in pollen tube growth [PDF]
Developmental Biology, 2006 Pollen tube elongation in the pistil is a crucial step in the sexual reproduction of plants. Because the wall of the pollen tube tip is composed of a single layer of pectin and, unlike most other plant cell walls, does not contain cellulose or callose, pectin methylesterases (PMEs) likely play a central role in the pollen tube growth and determination ...
Tian, Guo-Wei +3 more
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Fast Pollen Tube Growth in Conospermum Species [PDF]
Annals of Botany, 2004 An unusual form of pollen tube growth was observed for several Conospermum species (family Proteaceae). The rate of pollen tube growth, the number of tubes to emerge and the ultrastructure of these tubes are given here.Pollen was germinated in vitro in different sucrose concentrations and in the presence of calcium channel blockers, and tube emergence ...
Stone, L.M. +3 more
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Pollen germination and pollen tube growth in ZP maize lines [PDF]
Genetika, 2014 The study was conducted on the in vitro pollen germination at 26?, 28?, 32? and 35?C for 24h of male parental lines, pollen tube growth in vivo in cross pollination of female and male parental lines that make couples in four hybrids: ZP 504 su (? ZPPL 51 ? ? ZPPL 67); ZP 677 (? ZPPL 17 ? ? ZPPL 201); ZP 704 (? ZPPL 109 ? ?
Radosav Cerovic +6 more
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Organelle trafficking, the cytoskeleton, and pollen tube growth [PDF]
Journal of Integrative Plant Biology, 2014 AbstractThe pollen tube is fundamental for the reproduction of seed plants. Characteristically, it grows relatively quickly and uni‐directionally (“polarized growth”) to extend the male gametophyte to reach the female gametophyte. The pollen tube forms a channel through which the sperm cells move so that they can reach their targets in the ovule.
Cai, Giampiero +2 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
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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
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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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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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Annexin5 plays a vital role in Arabidopsis pollen development via Ca2+-dependent membrane trafficking. [PDF]
PLoS ONE, 2014 The regulation of pollen development and pollen tube growth is a complicated biological process that is crucial for sexual reproduction in flowering plants.
Jingen Zhu +6 more
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