Adapted dandelions increase seed dispersal potential when they are attacked by root herbivores

Bont, Zoe; Pfander, Marc; Robert, Christelle A. M.; Huber, Meret; Poelman, Erik H.; Raaijmakers, Ciska E.; Erb, Matthias (19 February 2019). Adapted dandelions increase seed dispersal potential when they are attacked by root herbivores (bioRxiv 551630). Cold Spring Harbor Laboratory 10.1101/551630

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Plants allow their offspring to escape unfavourable local conditions through seed dispersal. Whether plants use this strategy to escape herbivores is not well understood. Here, we explore how different Taraxacum officinale populations modify seed dispersal in response to root herbivore attack by Melolontha melolontha in the field. Root herbivore attack increases seed dispersal potential through a reduction in seed weight in populations that have evolved under high root herbivore pressure, but not in populations that have evolved under low pressure. This increase in dispersal potential is associated with reduced germination, suggesting that adapted plants trade dispersal for establishment. Analysis of vegetative growth parameters suggests that increased dispersal is not the result of stress flowering. These results suggest that root herbivory selects for genotypes that increase their dispersal ability in response to herbivore attack.

Item Type:

Working Paper

Division/Institute:

08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS) > Biotic Interactions
08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS)

UniBE Contributor:

Bont, Zoe Kalina; Pfander, Marc; Robert, Christelle Aurélie Maud and Erb, Matthias

Subjects:

500 Science > 580 Plants (Botany)

Series:

bioRxiv

Publisher:

Cold Spring Harbor Laboratory

Language:

English

Submitter:

Peter Alfred von Ballmoos-Haas

Date Deposited:

09 May 2019 15:20

Last Modified:

24 Oct 2019 01:04

Publisher DOI:

10.1101/551630

BORIS DOI:

10.7892/boris.127682

URI:

https://boris.unibe.ch/id/eprint/127682

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