A rhabdovirus accessory protein inhibits jasmonic acid signaling in plants to attract insect vectors.
Journal
Plant physiology
ISSN: 1532-2548
Titre abrégé: Plant Physiol
Pays: United States
ID NLM: 0401224
Informations de publication
Date de publication:
28 09 2022
28 09 2022
Historique:
received:
09
09
2021
accepted:
13
06
2022
pubmed:
1
7
2022
medline:
30
9
2022
entrez:
30
6
2022
Statut:
ppublish
Résumé
Plant rhabdoviruses heavily rely on insect vectors for transmission between sessile plants. However, little is known about the underlying mechanisms of insect attraction and transmission of plant rhabdoviruses. In this study, we used an arthropod-borne cytorhabdovirus, Barley yellow striate mosaic virus (BYSMV), to demonstrate the molecular mechanisms of a rhabdovirus accessory protein in improving plant attractiveness to insect vectors. Here, we found that BYSMV-infected barley (Hordeum vulgare L.) plants attracted more insect vectors than mock-treated plants. Interestingly, overexpression of BYSMV P6, an accessory protein, in transgenic wheat (Triticum aestivum L.) plants substantially increased host attractiveness to insect vectors through inhibiting the jasmonic acid (JA) signaling pathway. The BYSMV P6 protein interacted with the constitutive photomorphogenesis 9 signalosome subunit 5 (CSN5) of barley plants in vivo and in vitro, and negatively affected CSN5-mediated deRUBylation of cullin1 (CUL1). Consequently, the defective CUL1-based Skp1/Cullin1/F-box ubiquitin E3 ligases could not mediate degradation of jasmonate ZIM-domain proteins, resulting in compromised JA signaling and increased insect attraction. Overexpression of BYSMV P6 also inhibited JA signaling in transgenic Arabidopsis (Arabidopsis thaliana) plants to attract insects. Our results provide insight into how a plant cytorhabdovirus subverts plant JA signaling to attract insect vectors.
Identifiants
pubmed: 35771641
pii: 6623419
doi: 10.1093/plphys/kiac319
pmc: PMC9516739
doi:
Substances chimiques
Cyclopentanes
0
Oxylipins
0
Proteins
0
Ubiquitins
0
jasmonic acid
6RI5N05OWW
COP9 Signalosome Complex
EC 3.4.19.12
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
1349-1364Informations de copyright
© American Society of Plant Biologists 2022. All rights reserved. For permissions, please email: journals.permissions@oup.com.
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