Hpa1 secretion via type III secretion system in Xanthomonas oryzae pv. oryzae

Furutani, Ayako; Tsuge, Seiji; Oku, Takashi; Tsuno, Kazunori; Inoue, Yasuhiro; Ochiai, Hirokazu; Kaku, Hisatoshi; Kubo, Yasuyuki

doi:10.1007/s10327-003-0042-2

Cited by 53 publications

(78 citation statements)

References 21 publications

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“…2). We inoculated the XopP Xoo -OX lines with the T3SS-deficient hrpX mutant of Xoo that is incapable of type III effector delivery 18,19 . Because inoculation of the Xoo hrpX mutant induces a strong PTI response in rice, the Xoo hrpX mutant did not cause any disease lesions in wild-type (nontransformed) plants (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…Symptoms were scored by measuring lesion lengths 25 days post inoculation (d.p.i.). Bacterial growth in planta was measured as reported previously 18 . The inoculated rice leaves (1 cm long) were collected at 5 d.p.i.…”

Section: Methodsmentioning

confidence: 99%

“…Xoo uses the type III secretion system to secrete the effectors into rice cells. Furutani et al 18 identified 16 effectors in Xoo. Among them, XopY Xoo (Xoo1488) was shown to strongly suppress host PTI in rice 19 .…”

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confidence: 99%

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Bacterial effector modulation of host E3 ligase activity suppresses PAMP-triggered immunity in rice

et al. 2014

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Pathogen effector proteins are delivered to host cells to suppress plant immunity. However, the mechanisms by which effector proteins function are largely unknown. Here we show that expression of XopP Xoo , an effector of rice pathogen Xanthomonas oryzae pv. oryzae, in rice strongly suppresses peptidoglycan (PGN)-and chitin-triggered immunity and resistance to X. oryzae. XopP Xoo targets OsPUB44, a rice ubiquitin E3 ligase with a unique U-box domain. We find that XopP Xoo directly interacts with the OsPUB44 U-box domain and inhibits ligase activity. Two amino-acid residues specific for the OsPUB44 U-box domain are identified, which are responsible for the interaction with XopP Xoo . Silencing of OsPUB44 suppresses PGN-and chitin-triggered immunity and X. oryzae resistance, indicating that OsPUB44 positively regulates immune responses. Thus, it is likely that XopP Xoo suppresses immune responses by directly interacting with and inhibiting a positive regulator of plant immunity.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Bacterial effector modulation of host E3 ligase activity suppresses PAMP-triggered immunity in rice

et al. 2014

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“…The bacterium is systemic in the xylem of the rice host. A type III protein secretion system exists in this bacterium to directly inject virulence factors into the host (Furutani et al, 2009).…”

Section: The Bacterial Blight (Bb) Disease Of Ricementioning

confidence: 99%

Review on Bacterial Blight of rice caused by Xanthomonas oryzae pv. oryzae: different management approaches and role of Pseudomonas fluorescens as a potential biocontrol agent

Bora¹,

Baruah²,

Talukdar³

et al. 2017

Int.J.Curr.Microbiol.App.Sci

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“…oryzae (Xoo) is the causal agent of rice leaf blight disease. The Xoo strain MAFF311018 encodes 16 non-TAL effector proteins, while Philippine strain PXO99A encodes 18 (Furutani et al, 2009;Song and Yang, 2010). So far, the precise mechanisms of most non-TAL effectors remain largely unknown.…”

Section: Introductionmentioning

confidence: 99%

A Xanthomonas oryzae pv. oryzae effector, XopR, associates with receptor-like cytoplasmic kinases and suppresses PAMP-triggered stomatal closure

Wang

Sun

Fan

et al. 2016

Sci. China Life Sci.

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Receptor-like kinases (RLKs) play important roles in plant immunity signaling; thus, many are hijacked by pathogen effectors to promote successful pathogenesis. Xanthomonas oryzae pv. oryzae (Xoo) is the causal agent of rice leaf blight disease. The strain PXO99A has 18 non-TAL (transcription activation-like) effectors; however, their mechanisms of action and host target proteins remain largely unknown. Although the effector XopR from the Xoo strain MAFF311018 was shown to suppress PAMP-triggered immune responses in Arabidopsis, its target has not yet been identified. Here, we show that PXO99A XopR interacts with BIK1 at the plasma membrane. BIK1 is a receptor-like cytoplasmic kinase (RLCK) belonging to the RLK family of proteins and mediates PAMP-triggered stomatal immunity. In turn, BIK1 phosphorylates XopR. Furthermore, XopR suppresses PAMP-triggered stomatal closure in transgenic Arabidopsis expressing XopR. In addition, XopR is able to associate with RLCKs other than BIK1. These results suggest that XopR likely suppresses plant immunity by targeting BIK1 and other RLCKs. Xanthomonas, effector, XopR, BIK1, immunity Citation:Wang, S., Sun, J., Fan, F., Tan, Z., Zou, Y., and Lu, D. (2016). A Xanthomonas oryzae pv. oryzae effector, XopR, associates with receptor-like cytoplasmic kinases and suppresses PAMP-triggered stomatal closure. Sci China Life Sci 59, 897 -905.

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Hpa1 secretion via type III secretion system in Xanthomonas oryzae pv. oryzae

Cited by 53 publications

References 21 publications

Bacterial effector modulation of host E3 ligase activity suppresses PAMP-triggered immunity in rice

Bacterial effector modulation of host E3 ligase activity suppresses PAMP-triggered immunity in rice

Review on Bacterial Blight of rice caused by Xanthomonas oryzae pv. oryzae: different management approaches and role of Pseudomonas fluorescens as a potential biocontrol agent

A Xanthomonas oryzae pv. oryzae effector, XopR, associates with receptor-like cytoplasmic kinases and suppresses PAMP-triggered stomatal closure

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