ArticleMolecular plant pathology2012
The tomato UV-damaged DNA-binding protein-1 (DDB1) is implicated in pathogenesis-related (PR) gene expression and resistance to Agrobacterium tumefaciens.
Article in Molecular plant pathology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
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16 citing papers in PubMed, 31 citations in OpenAlex.
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- Tomato UV-B receptor SlUVR8 mediates plant acclimation to UV-B radiation and enhances fruit chloroplast development via regulating SlGLK2.Scientific reports · 2018Article
- Conventional and unconventional ubiquitination in plant immunity.Molecular plant pathology · 2017Review
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- Roles of UV-damaged DNA binding protein 1 (DDB1) in epigenetically modifying multiple traits of agronomic importance in tomato.Plant signaling & behavior · 2012Article
- The role of the ubiquitin-proteasome system in Agrobacterium tumefaciens-mediated genetic transformation of plants.Plant physiology · 2012Review
- A role of tomato UV-damaged DNA binding protein 1 (DDB1) in organ size control via an epigenetic manner.PloS one · 2012Article
- Transient silencing of the grapevine gene VvPGIP1 by agroinfiltration with a construct for RNA interference.Plant cell reports · 2012Article
- Proteome Biomarkers in Xylem Reveal Pierce's Disease Tolerance in Grape.Journal of proteomics & bioinformaticsArticle
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Authors and funding
7 authors at 4 institutions in 2 countries.
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Abstract
Plants defend themselves against potential pathogens via the recognition of pathogen-associated molecular patterns (PAMPs). However, the molecular mechanisms underlying this PAMP-triggered immunity (PTI) are largely unknown. In this study, we show that tomato HP1/DDB1, coding for a key component of the CUL4-based ubiquitin E3 ligase complex, is required for resistance to Agrobacterium tumefaciens. We found that the DDB1-deficient mutant (high pigment-1, hp1) is susceptible to nontumorigenic A. tumefaciens. The efficiency of callus generation from the hp1 cotyledons was extremely low as a result of the necrosis caused by Agrobacterium infection. On infiltration of nontumorigenic A. tumefaciens into leaves, the hp1 mutant moderately supported Agrobacterium growth and developed disease symptoms, but the expression of the pathogenesis-related gene SlPR1a1 and several PTI marker genes was compromised at different levels. Moreover, exogenous application of salicylic acid (SA) triggered SlPR1a1 gene expression and enhanced resistance to A. tumefaciens in wild-type tomato plants, whereas these SA-regulated defence responses were abolished in hp1 mutant plants. Thus, HP1/DDB1 may function through interaction with the SA-regulated PTI pathway in resistance against Agrobacterium infection.
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