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ARS Home » Pacific West Area » Parlier, California » San Joaquin Valley Agricultural Sciences Center » Crop Diseases, Pests and Genetics Research » Research » Publications at this Location » Publication #364748
Research Project: Identification of Novel Management Strategies for Key Pests and Pathogens of Grapevine with Emphasis on the Xylella Fastidiosa Pathosystem

Location: Crop Diseases, Pests and Genetics Research

Title: Proteomic analysis of host responses to citrus huanglongbing

Author
item Lin, Hong

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 6/25/2019
Publication Date: 8/2/2019
Citation: Lin, H. 2019. Proteomic analysis of host responses to citrus huanglongbing. Meeting Abstract. Presented at the Plant Biology Annual Meeting, Aug 3-7, 2019, San Jose, California.

Interpretive Summary:

Technical Abstract: Huanglongbing (HLB) is the most devastating disease of citrus plants. ‘Candidatus Liberibacter asiaticus’ (Las) is a presumed causal agent of HLB. Current HLB control practices include removal of infected plants and the use of insecticides to suppress psyllid vector populations. Recent reports indicated that some of citrus species are more tolerant to HLB. Identification of innate host defense mechanisms in citrus plants could provide information for improvement of citrus trees against HLB. A new study showed that continuous heat treatment of 40°C to 42°C for a minimum of 48 h was sufficient to significantly reduce or completely eliminate HLB pathogen in HLB-affected citrus seedlings. Plant exposure to one form of stress has been shown to serendipitously induce resistance to other forms of stress. Proteomic analysis of heat-treated HLB-affected lemon plants detected proteins that were markedly up-regulated only in plants that were simultaneously exposed to heat and HLB, suggesting that heat treatment induces proteins in HLB-affected citrus plants that could play an active role in the suppression of HLB.