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Direct and pollinator-mediated effects of herbivory on strawberry and the potential for improved resistance

Muola, Anne and Weber, Daniela and Malm, Lisa and Egan, Paul and Glinwood, Robert and Parachnowitsch, Amy L. and Stenberg, Johan A. (2017). Direct and pollinator-mediated effects of herbivory on strawberry and the potential for improved resistance. Frontiers in Plant Science. 8, 1-10
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Official URL: http://dx.doi.org/10.3389/fpls.2017.00823

Abstract

The global decline in pollinators has partly been blamed on pesticides, leading some to propose pesticide-free farming as an option to improve pollination. However, herbivores are likely to be more prevalent in pesticide-free environments, requiring knowledge of their effects on pollinators, and alternative crop protection strategies to mitigate any potential pollination reduction. Strawberry leaf beetles (SLB) Galerucella spp. are important strawberry pests in Northern Europe and Russia. Given that SLB attack both leaf and flower tissue, we hypothesized pollinators would discriminate against SLB-damaged strawberry plants (Fragaria vesca, cultivar 'Rugen'), leading to lower pollination success and yield. In addition we screened the most common commercial cultivar 'Rugen' and wild Swedish F. vesca genotypes for SLB resistance to assess the potential for inverse breeding to restore high SLB resistance in cultivated strawberry. Behavioral observations in a controlled experiment revealed that the local pollinator fauna avoided strawberry flowers with SLB-damaged petals. Low pollination, in turn, resulted in smaller more deformed fruits. Furthermore, SLB-damaged flowers produced smaller fruits even when they were hand pollinated, showing herbivore damage also had direct effects on yield, independent of indirect effects on pollination. We found variable resistance in wild woodland strawberry to SLB and more resistant plant genotypes than the cultivar 'Rugen' were identified. Efficient integrated pest management strategies should be employed to mitigate both direct and indirect effects of herbivory for cultivated strawberry, including high intrinsic plant resistance.

Authors/Creators:Muola, Anne and Weber, Daniela and Malm, Lisa and Egan, Paul and Glinwood, Robert and Parachnowitsch, Amy L. and Stenberg, Johan A.
Title:Direct and pollinator-mediated effects of herbivory on strawberry and the potential for improved resistance
Series/Journal:Frontiers in Plant Science (1664-462X)
Year of publishing :2017
Volume:8
Page range:1-10
Number of Pages:10
Publisher:Frontiers
ISSN:1664-462X
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Published version
Full Text Status:Public
Agris subject categories.:F Plant production > F01 Crop husbandry
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Horticulture
(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Botany
Keywords:crop wild relative, diffuse interaction, ecosystem service, Galerucella tenella, Galerucella sagittariae, florivory, integrated pest management, integrated pest and pollinator management
URN:NBN:urn:nbn:se:slu:epsilon-e-4223
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-4223
Additional ID:
Type of IDID
Web of Science (WoS)000401516700001
ID Code:14378
Faculty:LTV - Fakulteten för landskapsarkitektur, trädgårds- och växtproduktionsvetenskap
NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(LTJ, LTV) > Department of Plant Protection Biology
(NL, NJ) > Dept. of Crop Production Ecology
(NL, NJ) > Dept. of Ecology
(S) > Dept. of Ecology
Deposited By: SLUpub Connector
Deposited On:07 Jun 2017 08:14
Metadata Last Modified:07 Jun 2017 08:14

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