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Is there a missing link?: effects of root herbivory on plant-pollinator interactions and reproductive output in a monocarpic species

Céline Ghyselen, Dries Bonte UGent and Rein Brys UGent (2016) PLANT BIOLOGY. 18(1). p.156-163
abstract
Herbivores can have a major influence on plant fitness. The direct impact of herbivory on plant reproductive output has long been studied, and recently also indirect effects of herbivory on plant traits and pollinator attraction have received increasing attention. However, the link between these direct and indirect effects has seldom been studied. In this study, we investigated effects of root herbivory on plant and floral traits, pollination success and reproductive outcome in the monocarpic perennial Cynoglossum officinale. We exposed 119 C. officinale plants to a range of root herbivore damage by its specialist herbivore Mogulones cruciger. We assessed the effect of herbivory on several plant traits, pollinator foraging behaviour and reproductive output, and to elucidate the link between these last two we also quantified pollen deposition and pollen tube growth and applied a pollination experiment to test whether seed set was pollen-limited. Larval root herbivory induced significant changes in plant traits and had a negative impact on pollinator visitation. Infested plants were reduced in size, had fewer flowers and received fewer pollinator visits at plant and flower level than non-infested plants. Also, seed set was negatively affected by root herbivory, but this could not be attributed to pollen limitation since neither stigmatic pollen loads and pollen tube growth nor the results of the hand-pollination experiment differed between infested and non-infested plants. Our observations demonstrate that although herbivory may induce significant changes in flowering behaviour and resulting plant-pollinator interactions, it does not necessarily translate into higher rates of pollen limitation. The observed reductions in reproductive output following infection can mainly be attributed to higher resource limitation compared to non-infested plants.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
Cynoglossum officinale, Above- and belowground interactions, Mogulones cruciger, plant-pollinator interactions, pollen limitation, root herbivory, seed set, CYNOGLOSSUM-OFFICINALE L, BELOW-GROUND HERBIVORY, POLLEN LIMITATION, SEED PRODUCTION, LEAF HERBIVORY, HOUNDS-TONGUE, FITNESS, SIZE, PERFORMANCE, GROWTH
journal title
PLANT BIOLOGY
Plant Biol.
volume
18
issue
1
pages
156 - 163
Web of Science type
Article
Web of Science id
000369975700018
JCR category
PLANT SCIENCES
JCR impact factor
2.106 (2016)
JCR rank
65/211 (2016)
JCR quartile
2 (2016)
ISSN
1435-8603
DOI
10.1111/plb.12325
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
7143436
handle
http://hdl.handle.net/1854/LU-7143436
date created
2016-03-10 17:24:41
date last changed
2016-12-19 15:45:37
@article{7143436,
  abstract     = {Herbivores can have a major influence on plant fitness. The direct impact of herbivory on plant reproductive output has long been studied, and recently also indirect effects of herbivory on plant traits and pollinator attraction have received increasing attention. However, the link between these direct and indirect effects has seldom been studied. In this study, we investigated effects of root herbivory on plant and floral traits, pollination success and reproductive outcome in the monocarpic perennial Cynoglossum officinale. We exposed 119 C. officinale plants to a range of root herbivore damage by its specialist herbivore Mogulones cruciger. We assessed the effect of herbivory on several plant traits, pollinator foraging behaviour and reproductive output, and to elucidate the link between these last two we also quantified pollen deposition and pollen tube growth and applied a pollination experiment to test whether seed set was pollen-limited. Larval root herbivory induced significant changes in plant traits and had a negative impact on pollinator visitation. Infested plants were reduced in size, had fewer flowers and received fewer pollinator visits at plant and flower level than non-infested plants. Also, seed set was negatively affected by root herbivory, but this could not be attributed to pollen limitation since neither stigmatic pollen loads and pollen tube growth nor the results of the hand-pollination experiment differed between infested and non-infested plants. Our observations demonstrate that although herbivory may induce significant changes in flowering behaviour and resulting plant-pollinator interactions, it does not necessarily translate into higher rates of pollen limitation. The observed reductions in reproductive output following infection can mainly be attributed to higher resource limitation compared to non-infested plants.},
  author       = {Ghyselen, C{\'e}line and Bonte, Dries and Brys, Rein},
  issn         = {1435-8603},
  journal      = {PLANT BIOLOGY},
  keyword      = {Cynoglossum officinale,Above- and belowground interactions,Mogulones cruciger,plant-pollinator interactions,pollen limitation,root herbivory,seed set,CYNOGLOSSUM-OFFICINALE L,BELOW-GROUND HERBIVORY,POLLEN LIMITATION,SEED PRODUCTION,LEAF HERBIVORY,HOUNDS-TONGUE,FITNESS,SIZE,PERFORMANCE,GROWTH},
  language     = {eng},
  number       = {1},
  pages        = {156--163},
  title        = {Is there a missing link?: effects of root herbivory on plant-pollinator interactions and reproductive output in a monocarpic species},
  url          = {http://dx.doi.org/10.1111/plb.12325},
  volume       = {18},
  year         = {2016},
}

Chicago
Ghyselen, Céline, Dries Bonte, and Rein Brys. 2016. “Is There a Missing Link?: Effects of Root Herbivory on Plant-pollinator Interactions and Reproductive Output in a Monocarpic Species.” Plant Biology 18 (1): 156–163.
APA
Ghyselen, C., Bonte, D., & Brys, R. (2016). Is there a missing link?: effects of root herbivory on plant-pollinator interactions and reproductive output in a monocarpic species. PLANT BIOLOGY, 18(1), 156–163.
Vancouver
1.
Ghyselen C, Bonte D, Brys R. Is there a missing link?: effects of root herbivory on plant-pollinator interactions and reproductive output in a monocarpic species. PLANT BIOLOGY. 2016;18(1):156–63.
MLA
Ghyselen, Céline, Dries Bonte, and Rein Brys. “Is There a Missing Link?: Effects of Root Herbivory on Plant-pollinator Interactions and Reproductive Output in a Monocarpic Species.” PLANT BIOLOGY 18.1 (2016): 156–163. Print.