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A Type III Effector XopL Xcc8004 is vital for Xanthomonas campestris pathovar campestris to regulate plant immunity
Xanthomonas campestris pv. campestris (Xcc) secretes a suite of effectors into host plants via the type III secretion system (T3SS), modulating plant immunity defenses. Strain Xcc8004 causes black rot in brassica plants, including Arabidopsis thaliana, making it a classical model for the study of Xa...
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| Published in: | Research in microbiology 2018-12 |
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| container_title | Research in microbiology |
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| creator | Yan, Xia Tao, Jun Luo, Hong-Li Tan, Lei-Tao Rong, Wei Li, Hui-Ping He, Chao-Zu |
| description | Xanthomonas campestris pv. campestris (Xcc) secretes a suite of effectors into host plants via the type III secretion system (T3SS), modulating plant immunity defenses. Strain Xcc8004 causes black rot in brassica plants, including Arabidopsis thaliana, making it a classical model for the study of Xanthomonas pathogenesis. XopL
was defined as a T3SS effctor (T3SE) since its homologues XopL
from X campestris pv. vesicatoria (Xcv85-10) contribute to virulence in host plants. Except for its virulence on Chinese radish plants, little was previously known about the regulation and function of XopL
. Here, we tested the role of XopL
in the pathogenicity of Xcc8004 on different host plants including Arabidopsis. We found that it was required for full virulence of Xcc8004 in Chinese cabbage. XopL
promoted bacterial infection in Arabidopsis and suppressed bacterial flagellin (flg22)-induced FRK1 transcription, reactive oxygen species burst, callose deposition, and pathogenesis-related marker gene expression, but it did not affect mitogen-activated protein kinases (MAPKs) cascade. Early and prolonged expression of XopL
affected Arabidopsis growth and development. We demonstrated that XopL
is a virulence factor and interferes with innate immunity of Arabidopsis by suppressing pathogen-associated molecular pattern-triggered immunity (PTI) signaling, independent of MAPKs. |
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was defined as a T3SS effctor (T3SE) since its homologues XopL
from X campestris pv. vesicatoria (Xcv85-10) contribute to virulence in host plants. Except for its virulence on Chinese radish plants, little was previously known about the regulation and function of XopL
. Here, we tested the role of XopL
in the pathogenicity of Xcc8004 on different host plants including Arabidopsis. We found that it was required for full virulence of Xcc8004 in Chinese cabbage. XopL
promoted bacterial infection in Arabidopsis and suppressed bacterial flagellin (flg22)-induced FRK1 transcription, reactive oxygen species burst, callose deposition, and pathogenesis-related marker gene expression, but it did not affect mitogen-activated protein kinases (MAPKs) cascade. Early and prolonged expression of XopL
affected Arabidopsis growth and development. We demonstrated that XopL
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was defined as a T3SS effctor (T3SE) since its homologues XopL
from X campestris pv. vesicatoria (Xcv85-10) contribute to virulence in host plants. Except for its virulence on Chinese radish plants, little was previously known about the regulation and function of XopL
. Here, we tested the role of XopL
in the pathogenicity of Xcc8004 on different host plants including Arabidopsis. We found that it was required for full virulence of Xcc8004 in Chinese cabbage. XopL
promoted bacterial infection in Arabidopsis and suppressed bacterial flagellin (flg22)-induced FRK1 transcription, reactive oxygen species burst, callose deposition, and pathogenesis-related marker gene expression, but it did not affect mitogen-activated protein kinases (MAPKs) cascade. Early and prolonged expression of XopL
affected Arabidopsis growth and development. We demonstrated that XopL
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was defined as a T3SS effctor (T3SE) since its homologues XopL
from X campestris pv. vesicatoria (Xcv85-10) contribute to virulence in host plants. Except for its virulence on Chinese radish plants, little was previously known about the regulation and function of XopL
. Here, we tested the role of XopL
in the pathogenicity of Xcc8004 on different host plants including Arabidopsis. We found that it was required for full virulence of Xcc8004 in Chinese cabbage. XopL
promoted bacterial infection in Arabidopsis and suppressed bacterial flagellin (flg22)-induced FRK1 transcription, reactive oxygen species burst, callose deposition, and pathogenesis-related marker gene expression, but it did not affect mitogen-activated protein kinases (MAPKs) cascade. Early and prolonged expression of XopL
affected Arabidopsis growth and development. We demonstrated that XopL
is a virulence factor and interferes with innate immunity of Arabidopsis by suppressing pathogen-associated molecular pattern-triggered immunity (PTI) signaling, independent of MAPKs.</abstract><cop>France</cop><pmid>30594633</pmid></addata></record> |
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| identifier | EISSN: 1769-7123 |
| ispartof | Research in microbiology, 2018-12 |
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| source | ScienceDirect Freedom Collection |
| title | A Type III Effector XopL Xcc8004 is vital for Xanthomonas campestris pathovar campestris to regulate plant immunity |
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