Walter, Abigail
- United States Department of Agriculture (USDA)
Research article - Peer-reviewed, 2012
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
UKÄ Subject classification
Ecology
Pathobiology
Zoology
Agricultural Science
Publication Identifiers
DOI: https://doi.org/10.21273/hortsci.47.10.1449
Permanent link to this page (URI)
https://res.slu.se/id/publ/41803