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High-speed pollen release in the white mulberry tree, Morus alba L

journal contribution
posted on 2006-01-01, 00:00 authored by Philip Taylor, G Card, J House, M Dickinson, R Flagan
Anemophilous plants described as catapulting pollen explosively into the air have rarely attracted detailed examination. We investigated floral anthesis in a male mulberry tree with high-speed video and a force probe. The stamen was inflexed within the floral bud. Exposure to dry air initially resulted in a gradual movement of the stamen. This caused fine threads to tear at the stomium, ensuring dehiscence of the anther, and subsequently enabled the anther to slip off a restraining pistillode. The sudden release of stored elastic energy in the spring-like filament drove the stamen to straighten in less than 25 μs, and reflex the petals to velocities in excess of half the speed of sound. This is the fastest motion yet observed in biology, and approaches the theoretical physical limits for movements in plants.

History

Journal

Sexual Plant Reproduction

Volume

19

Issue

1

Pagination

19 - 24

Publisher

Springer

Location

Heidelberg , Germany

ISSN

0934-0882

eISSN

1432-2145

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

2006, Springer-Verlag

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