Aboveground herbivory induced jasmonates disproportionately reduce plant reproductive potential by facilitating root nematode infestation

Machado, Ricardo A. R.; Arce, Carla C.M.; McClure, Michael A.; Baldwin, Ian T.; Erb, Matthias (2018). Aboveground herbivory induced jasmonates disproportionately reduce plant reproductive potential by facilitating root nematode infestation. Plant, Cell & Environment, 41(4), pp. 797-808. Blackwell Science 10.1111/pce.13143

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Different plant feeders, including insects and parasitic nematodes, can influence each other by triggering systemic changes in their shared host plants. In most cases, however, the underlying mechanisms are unclear, and the consequences for plant fitness are not well understood. We studied the interaction between leaf feeding Manduca sexta caterpillars and root parasitic nematodes in Nicotiana attenuata. Simulated M. sexta attack increased the abundance of root parasitic nematodes in the field and facilitated Meloidogyne incognita reproduction in the glasshouse. Intact jasmonate biosynthesis was found to be required for both effects. Flower counts revealed that the jasmonate-dependent facilitation of nematode infestation following simulated leaf attack reduces the plant's reproductive potential to a greater degree than would be expected from the additive effects of the individual stresses. This work reveals that jasmonates mediate the interaction between a leaf herbivore and root parasitic nematodes and illustrates how plant-mediated interactions can alter plant's reproductive potential. The selection pressure resulting from the demonstrated fitness effects is likely to influence the evolution of plant defense traits in nature.

Item Type:

Journal Article (Original Article)

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:

Ruiz Machado, Ricardo Alberto; Marques Arce, Carla Cristina and Erb, Matthias

Subjects:

500 Science > 580 Plants (Botany)

ISSN:

0140-7791

Publisher:

Blackwell Science

Language:

English

Submitter:

Peter Alfred von Ballmoos-Haas

Date Deposited:

02 May 2018 15:02

Last Modified:

02 May 2018 15:10

Publisher DOI:

10.1111/pce.13143

Uncontrolled Keywords:

Ditylenchus sp.; Manduca sexta; Nicotiana attenuata; Pratylenchus hexincisus; jasmonates; nicotine; plant fitness; plant resistance; root parasitic nematodes

BORIS DOI:

10.7892/boris.111837

URI:

https://boris.unibe.ch/id/eprint/111837

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