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Related Experiment Video

Updated: Jun 14, 2026

A High-Resolution, Single-Grain, In Vivo Pollen Hydration Bioassay for Arabidopsis thaliana

A High-Resolution, Single-Grain, In Vivo Pollen Hydration Bioassay for Arabidopsis thaliana

Published on: June 30, 2023

Pollen-pistil interactions and the endomembrane system.

Aruna Kumar¹, Bruce McClure

¹Division of Biochemistry, Interdisciplinary Plant Group, 117 Schweitzer Hall, University of Missouri, Columbia, MO 65211-7310, USA.

Journal of Experimental Botany

|April 6, 2010

Summary

Plant reproduction relies on the endomembrane system for controlling pollen tube growth. This system regulates pollen tube interactions with the pistil, enabling effective plant mating and mate selection.

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Area of Science:

Plant reproductive biology
Cellular and molecular biology

Background:

Angiosperm reproduction necessitates pollen tubes traversing sporophytic tissues to reach ovules.
Pollen tube growth is a dynamic process involving significant membrane trafficking.

Purpose of the Study:

To explore the role of the endomembrane system in regulating plant mating.
To identify potential control points for plant reproduction within the endomembrane system.

Main Methods:

Analysis of pollen tube growth dynamics.
Investigation of endomembrane system activities during pollen-pistil interactions.
Examination of material uptake by pollen tubes from the pistil.

Main Results:

The endomembrane system is crucial for pollen tube growth, involving extensive exocytosis and endocytosis.
Pollen tubes actively absorb materials from the pistil's extracellular matrix.
The stigma and style play key roles in mate selection by supporting compatible pollen and inhibiting incompatible pollen.

Conclusions:

The endomembrane system in both pollen and pistil presents strategic targets for controlling plant mating.
Regulating endomembrane events offers a mechanism for managing plant reproduction and ensuring successful fertilization.