Innate immunity in rice

Chen, Xuewei; Ronald, Pamela C.

doi:10.1016/j.tplants.2011.04.003

Cited by 139 publications

(122 citation statements)

References 112 publications

(189 reference statements)

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“…In addition, endogenous plantderived signals arising from damage caused by pathogen infection, called damage-associated molecular patterns (DAMPs) (102), are known. Plants usually recognize MAMPs and DAMPs with pattern-recognition receptors (24,79). As MAMPs are also conserved in plant-beneficial microbes, they may elicit defense responses such as induced systemic resistance (ISR).…”

Section: The Plant Innate Immune Response In Beneficial Interactionsmentioning

confidence: 99%

Roots Shaping Their Microbiome: Global Hotspots for Microbial Activity

Reinhold‐Hurek

Bünger

Burbano

et al. 2015

Annu. Rev. Phytopathol.

618

379

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Land plants interact with microbes primarily at roots. Despite the importance of root microbial communities for health and nutrient uptake, the current understanding of the complex plant-microbe interactions in the rhizosphere is still in its infancy. Roots provide different microhabitats at the soil-root interface: rhizosphere soil, rhizoplane, and endorhizosphere. We discuss technical aspects of their differentiation that are relevant for the functional analysis of their different microbiomes, and we assess PCR (polymerase chain reaction)-based methods to analyze plant-associated bacterial communities. Development of novel primers will allow a less biased and more quantitative view of these global hotspots of microbial activity. Based on comparison of microbiome data for the different root-soil compartments and on knowledge of bacterial functions, a three-step enrichment model for shifts in community structure from bulk soil toward roots is presented. To unravel how plants shape their microbiome, a major research field is likely to be the coupling of reductionist and molecular ecological approaches, particularly for specific plant genotypes and mutants, to clarify causal relationships in complex root communities.

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Section: The Plant Innate Immune Response In Beneficial Interactionsmentioning

confidence: 99%

Roots Shaping Their Microbiome: Global Hotspots for Microbial Activity

Reinhold‐Hurek

Bünger

Burbano

et al. 2015

Annu. Rev. Phytopathol.

618

379

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“…Opinion began to shift with the discovery that a mutation in FLS2 left Arabidopsis susceptible to the bacterial pathogen P. syringae (228) and with the demonstration that XA21 could bind a highly conserved Xoo-derived peptide (133). In addition to the well-characterized XA21, FLS2, and EFR RKs, several RLPs and RKs have been shown or hypothesized to be involved in recognition of other conserved microbial signatures (Table 1) (20,32,178,211). Conversely, a number of conserved microbial signature molecules, including proteins, fatty acids, and oligosaccharides, have been isolated from bacteria, fungi, and oomycetes, but their receptors have not been identified (20).…”

Section: Non-rd Kinasesmentioning

confidence: 99%

Plant Innate Immunity: Perception of Conserved Microbial Signatures

Schwessinger

Ronald

2012

Annu. Rev. Plant Biol.

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310

252

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Plants and animals sense conserved microbial signatures through receptors localized to the plasma membrane and cytoplasm. These receptors typically carry or associate with non-arginine-aspartate (non-RD) kinases that initiate complex signaling networks cumulating in robust defense responses. In plants, coregulatory receptor kinases have been identified that not only are critical for the innate immune response but also serve an essential function in other regulatory signaling pathways.

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“…In the plant defense signaling pathway, MAP kinase (MAPK) pathway components and WRKY transcription factors are important players that modulate rice innate immunity (Chen and Ronald, 2011). MAPK cascades transduce defense signals to downstream proteins via protein phosphorylation (Zhang and Klessig, 2001).…”

Section: Hdt701 Regulation Of the Expression Of Defense-related Genesmentioning

confidence: 99%

HDT701, a Histone H4 Deacetylase, Negatively Regulates Plant Innate Immunity by Modulating Histone H4 Acetylation of Defense-Related Genes in Rice

et al. 2012

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Histone acetylation and deacetylation play an important role in the modification of chromatin structure and regulation of gene expression in eukaryotes. Chromatin acetylation status is modulated antagonistically by histone acetyltransferases and histone deacetylases (HDACs). In this study, we characterized the function of histone deacetylase701 (HDT701), a member of the plant-specific HD2 subfamily of HDACs, in rice (Oryza sativa) innate immunity. Transcription of HDT701 is increased in the compatible reaction and decreased in the incompatible reaction after infection by the fungal pathogen Magnaporthe oryzae. Overexpression of HDT701 in transgenic rice leads to decreased levels of histone H4 acetylation and enhanced susceptibility to the rice pathogens M. oryzae and Xanthomonas oryzae pv oryzae (Xoo). By contrast, silencing of HDT701 in transgenic rice causes elevated levels of histone H4 acetylation and elevated transcription of pattern recognition receptor (PRR) and defense-related genes, increased generation of reactive oxygen species after pathogen-associated molecular pattern elicitor treatment, as well as enhanced resistance to both M. oryzae and Xoo. We also found that HDT701 can bind to defense-related genes to regulate their expression. Taken together, these results demonstrate that HDT701 negatively regulates innate immunity by modulating the levels of histone H4 acetylation of PRR and defense-related genes in rice.

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Innate immunity in rice

Cited by 139 publications

References 112 publications

Roots Shaping Their Microbiome: Global Hotspots for Microbial Activity

Roots Shaping Their Microbiome: Global Hotspots for Microbial Activity

Plant Innate Immunity: Perception of Conserved Microbial Signatures

HDT701, a Histone H4 Deacetylase, Negatively Regulates Plant Innate Immunity by Modulating Histone H4 Acetylation of Defense-Related Genes in Rice

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