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Research article2012Peer reviewedOpen access

Titers of 'Ca. Liberibacter asiaticus' in Murraya paniculata and Murraya-reared Diaphorina citri Are Much Lower than in Citrus and Citrus-reared Psyllids

Walter, Abigail; Duan, YongPing; Hall, David G.

Abstract

Huanglongbing, one of the most devastating diseases of citrus, is associated with the bacterium 'Candidatus Liberibacter asiaticus' vectored by the Asian citrus psyllid, Diaphorina citri, in North America. Murraya paniculata is a common ornamental plant that is an alternate host of both the psyllid and bacterium. We tested M. paniculata and Citrus sinensis grown together in the same field for their titer of 'Ca. L. asiaticus'. We found the bacterium in both M. paniculata and C. sinensis, but the titer was four orders of magnitude lower in M. paniculata. We also assayed D. citri from laboratory colonies reared on either 'Ca. L. asiaticus'-infected M. paniculata or infected Citrus spp. Psyllids reared on infected M. paniculata also carried bacterial titers five orders of magnitude lower than psyllids reared on infected Citrus spp. These observations imply resistance to huanglongbing in M. paniculata.

Keywords

alternate host; Asian citrus psyllid; citrus huanglongbing; orange jasmine

Published in

HortScience
2012, volume: 47, number: 10, pages: 1449-1452
Publisher: AMER SOC HORTICULTURAL SCIENCE

SLU Authors

  • Walter, Abigail

    • United States Department of Agriculture (USDA)

UKÄ Subject classification

Pathobiology
Zoology
Agricultural Science

Publication identifier

  • DOI: https://doi.org/10.21273/hortsci.47.10.1449

Permanent link to this page (URI)

https://res.slu.se/id/publ/41803