AvrACXcc8004, a Type III Effector with a Leucine-Rich Repeat Domain fromXanthomonas campestrisPathovar campestris Confers Avirulence in Vascular Tissues ofArabidopsis thalianaEcotype Col-0

Xu, Ruihua; Blanvillain, Servane; Feng, Jia‐Xun; Jiang, Bo-Le; Li, Xianzhen; Wei, Hong-Yu; Kroj, Thomas; Lauber, Emmanuelle; Roby, Dominique; Chen, Baoshan; He, Yanan; Lu, Guang‐Tao; Tang, Dongjie; Vasse, Jacques; Arlat, Matthieu

doi:10.1128/jb.00978-07

Cited by 79 publications

(86 citation statements)

References 77 publications

(100 reference statements)

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“…raphani 756C is most similar to that of the other X. campestris strains. (104). It would be of interest to test whether mutation of the xopAC allele in X. campestris pv.…”

Section: Resultsmentioning

confidence: 99%

Two New Complete Genome Sequences Offer Insight into Host and Tissue Specificity of Plant Pathogenic Xanthomonas spp

et al. 2011

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Xanthomonas is a large genus of bacteria that collectively cause disease on more than 300 plant species. The broad host range of the genus contrasts with stringent host and tissue specificity for individual species and pathovars. Whole-genome sequences of Xanthomonas campestris pv. raphani strain 756C and X. oryzae pv. oryzicola strain BLS256, pathogens that infect the mesophyll tissue of the leading models for plant biology, Arabidopsis thaliana and rice, respectively, were determined and provided insight into the genetic determinants of host and tissue specificity. Comparisons were made with genomes of closely related strains that infect the vascular tissue of the same hosts and across a larger collection of complete Xanthomonas genomes. The results suggest a model in which complex sets of adaptations at the level of gene content account for host specificity and subtler adaptations at the level of amino acid or noncoding regulatory nucleotide sequence determine tissue specificity.The genus Xanthomonas is a member of the class Gammaproteobacteria and consists of 20 plant-associated species, many of which cause important diseases of crops and ornamentals. Individual species comprise multiple pathogenic variants (pathovars [pv.]). Collectively, members of the genus cause disease on at least 124 monocot species and 268 dicot species, including fruit and nut trees, solanaceous and brassicaceous plants, and cereals (32). They cause a variety of symptoms, including necrosis, cankers, spots, and blight, and they affect a variety of plant parts, including leaves, stems, and fruits (47). The broad host range of the genus contrasts strikingly with the * Corresponding author. Mailing address:

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“…raphani 756C is most similar to that of the other X. campestris strains. (104). It would be of interest to test whether mutation of the xopAC allele in X. campestris pv.…”

Section: Resultsmentioning

confidence: 99%

Two New Complete Genome Sequences Offer Insight into Host and Tissue Specificity of Plant Pathogenic Xanthomonas spp

et al. 2011

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“…Interestingly, AtZAR1 seems to activate two levels of immunity depending on the T3SE that is sensed. AvrAC induces a weak ETI that is described as broadspectrum immunity (Xu et al, 2008;Huard-Chauveau et al, 2013), and HopF2a induces a nHR-independent ETI (Seto et al, 2017). In contrast, HopZ1a induces a strong ETI with a typical macroscopic HR (Lewis et al, 2008(Lewis et al, , 2010.…”

Section: D231nmentioning

confidence: 99%

Analysis of the ZAR1 Immune Complex Reveals Determinants for Immunity and Molecular Interactions

et al. 2017

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“…For P. infestans, the pen2-1 mutant was used (Lipka et al, 2005), while for the Pseudomonas strains the genotypes NahG and npr1-1 were used (Thomma et al, 1998). Finally, for X. campestris the ecotype Kas was used as positive control (Xu et al, 2008).…”

Section: Pathogen Inoculationsmentioning

confidence: 99%

A Genome-Wide Functional Investigation into the Roles of Receptor-Like Proteins in Arabidopsis

et al. 2008

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Receptor-like proteins (RLPs) are cell surface receptors that typically consist of an extracellular leucine-rich repeat domain, a transmembrane domain, and a short cytoplasmatic tail. In several plant species, RLPs have been found to play a role in disease resistance, such as the tomato (Solanum lycopersicum) Cf and Ve proteins and the apple (Malus domestica) HcrVf2 protein that mediate resistance against the fungal pathogens Cladosporium fulvum, Verticillium spp., and Venturia inaequalis, respectively. In addition, RLPs play a role in plant development; Arabidopsis (Arabidopsis thaliana) TOO MANY MOUTHS (TMM) regulates stomatal distribution, while Arabidopsis CLAVATA2 (CLV2) and its functional maize (Zea mays) ortholog FASCINATED EAR2 regulate meristem maintenance. In total, 57 RLP genes have been identified in the Arabidopsis genome and a genome-wide collection of T-DNA insertion lines was assembled. This collection was functionally analyzed with respect to plant growth and development and sensitivity to various stress responses, including susceptibility toward pathogens. A number of novel developmental phenotypes were revealed for our CLV2 and TMM insertion mutants. In addition, one AtRLP gene was found to mediate abscisic acid sensitivity and another AtRLP gene was found to influence nonhost resistance toward Pseudomonas syringae pv phaseolicola. This genome-wide collection of Arabidopsis RLP gene T-DNA insertion mutants provides a tool for future investigations into the biological roles of RLPs.For decades, it was thought that the communication between plant cells occurs through the cell wall-spanning cytoplasmic bridges called plasmodesmata. However, since the identification of the first plant cell surface receptor (Walker and Zhang, 1990), it has been known that, similar to other multicellular organisms, plants can perceive extracellular signals at the plasma membrane. Since then, many plant cell surface receptors have been found to play key roles in very diverse processes ranging from growth and development, in which they perceive endogenous self signals, to recognition of other organisms, in which they perceive exogenous nonself signals (Diévart and Clark, 2004).A common structural element of many plant cell surface receptors is the extracellular Leu-rich repeat (eLRR) domain that is generally thought to mediate ligand perception (Kobe and Kajava, 2001;Kinoshita et al., 2005). These eLRRs are composed of 23 to 25 amino acids with the conserved consensus sequence LxxLxxLxLxxNxLt/sgxIpxxLG (Jones and Jones, 1997). The largest group of eLRR-containing cell surface receptors is formed by the receptor-like kinases (RLKs) that are composed of an eLRR domain, a single-pass transmembrane domain, and a cytoplasmic kinase domain, with over 200 representatives in the Arabidopsis (Arabidopsis thaliana) genome (Shiu and Bleecker, 2003). The second largest group of eLRR-containing cell surface receptors is formed by the receptor-like proteins (RLPs) that differ from RLKs in that they lack the cytoplasmic kinase domai...

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AvrAC_Xcc8004, a Type III Effector with a Leucine-Rich Repeat Domain fromXanthomonas campestrisPathovar campestris Confers Avirulence in Vascular Tissues ofArabidopsis thalianaEcotype Col-0

Cited by 79 publications

References 77 publications

Two New Complete Genome Sequences Offer Insight into Host and Tissue Specificity of Plant Pathogenic Xanthomonas spp

Two New Complete Genome Sequences Offer Insight into Host and Tissue Specificity of Plant Pathogenic Xanthomonas spp

Analysis of the ZAR1 Immune Complex Reveals Determinants for Immunity and Molecular Interactions

A Genome-Wide Functional Investigation into the Roles of Receptor-Like Proteins in Arabidopsis

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