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Unraveling the Host Plant Alternation of Cacopsylla pruni – Adults but Not Nymphs Can Survive on Conifers Due to Phloem/Xylem Composition

Gallinger, Jannicke ; Gross, Jürgen (2024)
Unraveling the Host Plant Alternation of Cacopsylla pruni – Adults but Not Nymphs Can Survive on Conifers Due to Phloem/Xylem Composition.
In: Frontiers in Plant Science, 2018, 9
doi: 10.26083/tuprints-00016236
Article, Secondary publication, Publisher's Version

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Item Type: Article
Type of entry: Secondary publication
Title: Unraveling the Host Plant Alternation of Cacopsylla pruni – Adults but Not Nymphs Can Survive on Conifers Due to Phloem/Xylem Composition
Language: English
Date: 12 March 2024
Place of Publication: Darmstadt
Year of primary publication: 13 April 2018
Place of primary publication: Lausanne
Publisher: Frontiers Media S.A.
Journal or Publication Title: Frontiers in Plant Science
Volume of the journal: 9
Collation: 12 Seiten
DOI: 10.26083/tuprints-00016236
Corresponding Links:
Origin: Secondary publication DeepGreen
Abstract:

Plant sap feeding insects like psyllids are known to be vectors of phloem dwelling bacteria ('Candidatus Phytoplasma' and 'Ca. Liberibacter'), plant pathogens which cause severe diseases and economically important crop damage. Some univoltine psyllid species have a particular life cycle, within one generation they alternate two times between different host plant species. The plum psyllid Cacopsylla pruni, the vector of European Stone Fruit Yellows (ESFY), one of the most serious pests in European fruit production, migrates to stone fruit orchards (Prunus spp.) for mating and oviposition in early spring. The young adults of the new generation leave the Prunus trees in summer and emigrate to their overwintering hosts like spruce and other conifers. Very little is known about the factors responsible for the regulation of migration, reasons for host alternation, and the behavior of psyllids during their phase of life on conifers. Because insect feeding behavior and host acceptance is driven by different biotic factors, such as olfactory and gustatory cues as well as mechanical barriers, we carried out electrical penetration graph (EPG) recordings and survival bioassays with C. pruni on different conifer species as potential overwintering hosts and analyzed the chemical composition of the respective plant saps. We are the first to show that migrating psyllids do feed on overwintering hosts and that nymphs are able to ingest phloem and xylem sap of coniferous trees, but cannot develop on conifer diet. Analyses of plant saps reveal qualitative differences in the chemical composition between coniferous trees and Prunus as well as within conifer species. These differences are discussed with regard to nutritional needs of psyllid nymphs for proper development, overwintering needs of adults and restriction of 'Ca. P. prunorum' to Prunus phloem.

Uncontrolled Keywords: phloem, chemical composition, psyllid, development, overwintering, host alternation, migration, conifer
Identification Number: Artikel-ID: 484
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-162367
Additional Information:

This article is part of the Research Topic: The Ecology of Plant Chemistry and How it Drives Multi-Species Interactions

Specialty section: This article was submitted to Plant Metabolism and Chemodiversity, a section of the journal Frontiers in Plant Science

Classification DDC: 500 Science and mathematics > 570 Life sciences, biology
500 Science and mathematics > 580 Plants (botany)
Divisions: 10 Department of Biology > Chemical Plant Ecology
Date Deposited: 12 Mar 2024 12:49
Last Modified: 30 Apr 2024 12:02
SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/16236
PPN: 517677342
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