Foliar aphid feeding recruits rhizosphere bacteria and primes plant immunity against pathogenic and non-pathogenic bacteria in pepper

Cited 86 time in scopus
Metadata Downloads

Full metadata record

DC FieldValueLanguage
dc.contributor.authorBoyoung Lee-
dc.contributor.authorSoohyun Lee-
dc.contributor.authorChoong-Min Ryu-
dc.description.abstractPlants modulate defence signalling networks in response to different biotic stresses. The present study evaluated the effect of a phloem-sucking aphid on plant defence mechanisms in pepper (Capsicum annuum) during subsequent pathogen attacks on leaves and rhizosphere bacteria on roots. Plants were pretreated with aphids and/or the chemical trigger benzothiadiazol (BTH) 7 d before being challenged with two pathogenic bacteria, Xanthomonas axonopodis pv. vesicatoria (Xav) as a compatible pathogen and X. axonopodis pv. glycines (Xag) as an incompatible (non-host) pathogen. Disease severity was noticeably lower in aphid- and BTH + aphid-treated plants than in controls. Although treatment with BTH or aphids alone did not affect the hypersensitive response (HR) against Xag strain 8ra, the combination treatment had a synergistic effect on the HR. The aphid population was reduced by BTH pretreatment and by combination treatment with BTH and bacterial pathogens in a synergistic manner. Analysis of the expression of the defence-related genes Capsicum annum pathogenesis-related gene 9 (CaPR9), chitinase 2 (CaCHI2), SAR8·2 and Lipoxygenase1 (CaLOX1) revealed that aphid infestation resulted in the priming of the systemic defence responses against compatible and incompatible pathogens. Conversely, pre-challenge with the compatible pathogen Xav on pepper leaves significantly reduced aphid numbers. Aphid infestation increased the population of the beneficial Bacillus subtilis GB03 but reduced that of the pathogenic Ralstonia solanacearum SL1931. The expression of defence-related genes in the root and leaf after aphid feeding indicated that the above-ground aphid infestation elicited salicylic acid and jasmonic acid signalling throughout the whole plant. The findings of this study show that aphid feeding elicits plant resistance responses and attracts beneficial bacterial populations to help the plant cope with subsequent pathogen attacks.-
dc.publisherOxford Univ Press-
dc.titleFoliar aphid feeding recruits rhizosphere bacteria and primes plant immunity against pathogenic and non-pathogenic bacteria in pepper-
dc.title.alternativeFoliar aphid feeding recruits rhizosphere bacteria and primes plant immunity against pathogenic and non-pathogenic bacteria in pepper-
dc.citation.titleAnnals of Botany-
dc.contributor.affiliatedAuthorBoyoung Lee-
dc.contributor.affiliatedAuthorSoohyun Lee-
dc.contributor.affiliatedAuthorChoong-Min Ryu-
dc.identifier.bibliographicCitationAnnals of Botany, vol. 110, no. 2, pp. 281-290-
dc.subject.keywordFoliar feeding-
dc.subject.keywordCapsicum annuum-
dc.subject.keywordRhizosphere bacteria-
dc.subject.keywordPlant defence-
dc.subject.keywordXanthomonas axonopodis-
dc.subject.localFoliar feeding-
dc.subject.localCapsicum annum-
dc.subject.localCapsicum annuum-
dc.subject.localCapsicum annuum L.-
dc.subject.localcapsicum annuum-
dc.subject.localpepper (Capsicum annuum L.)-
dc.subject.localRhizosphere bacteria-
dc.subject.localPlant Defence-
dc.subject.localPlant defence-
dc.subject.localPlant growth promoting rhizobacteria (PGPR)-
dc.subject.localPlant growth-promoting rhizobacteria-
dc.subject.localPlant growth-promoting rhizobacteria (PGPR)-
dc.subject.localPlant growthpromoting rhizobacteria-
dc.subject.localPlant growthpromoting rhizobacteria (PGPR)-
dc.subject.localplant growth-promoting rhizobacteria-
dc.subject.localplant growth-promoting rhizobacteria (PGPR)-
dc.subject.localplant growthpromoting rhizobacteria-
dc.subject.localxanthomonas axonopodis-
dc.subject.localXanthomonas axonopodis-
Appears in Collections:
Division of Research on National Challenges > Infectious Disease Research Center > 1. Journal Articles
Files in This Item:
  • There are no files associated with this item.

Items in OpenAccess@KRIBB are protected by copyright, with all rights reserved, unless otherwise indicated.