Pathogenicity against hemipteran vector insects of a novel insect pathogenic fungus from Entomophthorales (Pandora sp. nov. inedit.) with potential for biological control.
Biocontrol
Cacopsylla sp.
Entomopathogenic fungi
Entomophthorales
Multitrophic interaction
Phytoplasma
Journal
Journal of invertebrate pathology
ISSN: 1096-0805
Titre abrégé: J Invertebr Pathol
Pays: United States
ID NLM: 0014067
Informations de publication
Date de publication:
07 2021
07 2021
Historique:
received:
09
12
2020
revised:
11
05
2021
accepted:
16
05
2021
pubmed:
25
5
2021
medline:
15
12
2021
entrez:
24
5
2021
Statut:
ppublish
Résumé
A new but still unpublished entomopathogenic fungus (ARSEF13372) in the genus Pandora (Entomophthorales: Entomophthoraceae) was originally isolated from Cacopsylla sp. (Hemiptera: Psyllidae). Several species of the genus Cacopsylla vector phloem-borne bacteria of the genus 'Candidatus Phytoplasma', which cause diseases in fruit crops such as apple proliferation, pear decline and European stone fruit yellows. To determine Pandora's host range and biocontrol potential we conducted laboratory infection bioassays; Hemipteran phloem-feeding insects were exposed to conidia actively discharged from in vitro produced mycelial mats of standardized area. We documented the pathogenicity of Pandora sp. nov. to species of the insect families Psyllidae and Triozidae, namely Cacopsyllapyri L., C.pyricola (Foerster), C.picta (Foerster, 1848), C.pruni (Scopoli), C.peregrina (Foerster), and Trioza apicalis Foerster. The occurrence of postmortem signs of infection on cadavers within 10 days post inoculation proved that Pandora sp. nov. was infective to the tested insect species under laboratory conditions and significantly reduced mean survival time for C.pyri (summer form and nymph), C.pyricola, C.picta, C.pruni, C.peregrina and T.apicalis. Assessing a potential interaction between phytoplasma, fungus and insect host revealed that phytoplasma infection ('Candidatus Phytoplasma mali') of the vector C.picta and/or its host plant apple Malus domestica Borkh. did not significantly impact the survival of C.picta after Pandora sp. nov. infection. The results from infection bioassays were discussed in relation to Pandora sp. nov. host range and its suitability as biocontrol agent in integrated pest management strategies of psyllid pests, including vector species, in orchards.
Identifiants
pubmed: 34029539
pii: S0022-2011(21)00088-4
doi: 10.1016/j.jip.2021.107621
pii:
doi:
Substances chimiques
Biological Control Agents
0
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
107621Informations de copyright
Copyright © 2021 The Authors. Published by Elsevier Inc. All rights reserved.