Results 11 to 20 of about 130,253 (242)
Plasma membrane H+-ATPases sustain pollen tube growth and fertilization
Nature Communications, 2020 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 to energize pollen tube growth and underlie cell polarity ...
R. D. Hoffmann +10 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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Boron toxicity causes multiple effects on Malus domestica pollen tube growth
Frontiers in Plant Science, 2016 Boron is an essential micronutrient for plants. However, boron is also toxic to cells at high concentrations, although the mechanism of this stress is not known.
Kefeng eFang +6 more
doaj +2 more sources
AGC1.5 Kinase Phosphorylates RopGEFs to Control Pollen Tube Growth.
Molecular Plant, 2018 Double fertilization in angiosperms requires the targeted delivery of immotile sperm to the eggs through pollen tubes. The polarity of tip-growing pollen tubes is maintained through dynamic association of active Rho GTPases of plants (ROP-GTP) with the ...
En Li +8 more
semanticscholar +3 more sources
Frontiers in Plant Science, 2016 Nitric oxide (NO) as a signaling molecule plays crucial roles in many abiotic stresses in plant development processes, including pollen tube growth. Here, the signaling networks dominated by NO during cold stress that inhibited Camellia sinensis pollen ...
Weidong eWang +8 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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Plant Physiology, 2023 Pollen tubes extend rapidly via tip growth. This process depends on a dynamic actin cytoskeleton, which has been implicated in controlling organelle movements, cytoplasmic streaming, vesicle trafficking, and cytoplasm organization in pollen tubes.
Ruihui Zhang +4 more
semanticscholar +1 more source
Developmental Cell, 2021 Invasive or penetrative growth is critical for developmental and reproductive processes (e.g., pollen tube penetration of pistils) and disease progression (e.g., cancer metastasis and fungal hyphae invasion).
Xiang Zhou +8 more
semanticscholar +1 more source
Genes, 2021 The growth of plant cells is inseparable from relaxation and expansion of cell walls. Expansins are a class of cell wall binding proteins, which play important roles in the relaxation of cell walls. Although there are many members in expansin gene family,
Weimiao Liu +3 more
semanticscholar +1 more source