What question did this study set out to answer?

To review cellular, molecular, and physiological signaling mechanisms that regulate polarized tip growth, reorientation, and growth inhibition in angiosperm pollen tubes.

April 1, 1999The Plant CellOpen Access

Signaling and the Modulation of Pollen Tube Growth

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Authors

VFVernonica E. Franklin‐TongHuazhong Agricultural University

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Implication

Mechanistic review uncovers signaling cascades and calcium dynamics regulating pollen tube growth in flowering plants, highlighting essential pathways that guide fertilization.

Key Points

To review cellular, molecular, and physiological signaling mechanisms that regulate polarized tip growth, reorientation, and growth inhibition in angiosperm pollen tubes.
Synthesized findings from in vitro pollen germination assays and live-cell imaging studies examining intracellular signaling dynamics.
Evaluated genetic mutants and biochemical analyses investigating pollen hydration, cell wall synthesis, and cytoskeletal remodeling.
Assessed experimental models of pollen tube reorientation and self-incompatibility responses across flowering plant species.
Polarized pollen tube elongation depends on an oscillating apical cytosolic calcium gradient, which coordinates vesicle fusion and cell wall deposition at the tip.
Cytoskeletal remodeling driven by actin-binding proteins and small GTPases directs intracellular trafficking essential for maintaining rapid tip growth.
Self-incompatibility signaling activates localized calcium spikes and downstream signaling cascades that selectively arrest incompatible pollen tube growth.

Cite This Study

Vernonica E. Franklin‐Tong (1999) studied this question.

synapsesocial.com/papers/6a773eb41400807f0f1e978d https://doi.org/10.1105/tpc.11.4.727

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Implication

Mechanistic review uncovers signaling cascades and calcium dynamics regulating pollen tube growth in flowering plants, highlighting essential pathways that guide fertilization.

Signaling and the Modulation of Pollen Tube Growth

Discussion

Member takes

Implication

Key Points

Cite This Study

Signaling and the Modulation of Pollen Tube Growth

Discussion

Member takes

Implication

Key Points

Cite This Study

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