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Positive roles for Osa-miR7695 in regulating defense responses against the rice blast fungus

ABSTRACT: Positive roles for Osa-miR7695 in regulating defense responses against the rice blast fungus

PROVIDER: PRJNA504419 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR8170850_1.fastq.gz	Fastqsanger.gz
	SRR8170850_2.fastq.gz	Fastqsanger.gz
	SRR8170852_1.fastq.gz	Fastqsanger.gz
	SRR8170852_2.fastq.gz	Fastqsanger.gz
	SRR8170844_1.fastq.gz	Fastqsanger.gz

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Similar Datasets

Positive roles for Osa-miR7695 in regulating defense responses against the rice blast fungus

Project description:MicroRNAs (miRNAs) are small non-coding RNAs that function as post-transcriptional regulators of gene expression in eukaryotes. In rice, miR7695 targets an alternatively spliced transcript of natural resistance-associated macrophage protein 6 (OsNramp6) encoding an iron transporter whose expression is regulated by infection with the rice blast fungus Magnaporthe oryzae. Rice plants grown under high iron supply showed blast resistance, which supports that iron is a factor in controlling blast resistance by still unknown mechanisms. Here, iron accumulated near M. oryzae appressoria, the sites of pathogen entry, and in cells surrounding infected regions of the rice leaf. Activation-tagged MIR7695 rice plants (MIR7695-Ac) exhibited enhanced resistance to M. oryzae infection. RNA-seq analysis revealed that blast resistance in MIR7695-Ac plants was associated with strong induction of defense-related genes, including pathogenesis-related and diterpenoid biosynthetic genes. Levels of phytoalexins during pathogen infection were higher in MIR7695-Ac than wild-type plants. Early phytoalexin biosynthetic genes, OsCPS2 and OsCSP4, were highly upregulated in rice plants grown under high iron supply. Our data indicate that miR7695 positively regulates rice immunity while establishing links between defense and iron signaling in rice. MiR7695-mediated regulation of OsNramp6 has great potential for the development of strategies to control rice blast disease.

2020-01-08 | GSE122258 | GEO

RRM Transcription Factors Interact with NLRs and Regulate Broad-Spectrum Blast Resistance in Rice

Project description:Nucleotide-binding site leucine-rich repeat (NLR) receptors perceive pathogen effectors and trigger plant immunity. However, the mechanisms underlying NLR-triggered defense responses remain obscure. The recently discovered Pigm locus in rice encodes a cluster of NLRs, including PigmR, which confers broad-spectrum resistance to blast fungus. Here, we identify PIBP1 (PigmR-INTERACTING and BLAST RESISTANCE PROTEIN 1), an RRM (RNA-recognition motif) protein that specifically interacts with PigmR and other similar NLRs to trigger blast resistance. PigmR-promoted nuclear accumulation of PIBP1 ensures full blast resistance. We find that PIBP1 and a homolog, Os06 g02240, bind DNA and function as unconventional transcription factors at the promoters of the defense genes OsWAK14 and OsPAL1, activating their expression. Knockout of PIBP1 and Os06g02240 greatly attenuated blast resistance. Collectively, our study discovers previously unappreciated RRM transcription factors that directly interact with NLRs to activate plant defense, establishing a direct link between transcriptional activation of immune responses with NLR-mediated pathogen perception

2019-08-04 | GSE118356 | GEO

RRM Transcription Factors Interact with NLRs and Regulate Broad-Spectrum Blast Resistance in Rice

Project description:Nucleotide-binding site leucine-rich repeat (NLR) receptors perceive pathogen effectors and trigger plant immunity. However, the mechanisms underlying NLR-triggered defense responses remain obscure. The recently discovered Pigm locus in rice encodes a cluster of NLRs, including PigmR, which confers broad-spectrum resistance to blast fungus. Here, we identify PIBP1 (PigmR-INTERACTING and BLAST RESISTANCE PROTEIN 1), an RRM (RNA-recognition motif) protein that specifically interacts with PigmR and other similar NLRs to trigger blast resistance. PigmR-promoted nuclear accumulation of PIBP1 ensures full blast resistance. We find that PIBP1 and a homolog, Os06 g02240, bind DNA and function as unconventional transcription factors at the promoters of the defense genes OsWAK14 and OsPAL1, activating their expression. Knockout of PIBP1 and Os06 g02240 greatly attenuated blast resistance. Collectively, our study discovers previously unappreciated RRM transcription factors that directly interact with NLRs to activate plant defense, establishing a direct link between transcriptional activation of immune responses with NLR-mediated pathogen perception.

2019-08-04 | GSE118352 | GEO

RRM Transcription Factors Interact with NLRs and Regulate Broad-Spectrum Blast Resistance in Rice

2019-08-04 | GSE118355 | GEO

Gene expression in rice roots in response to inoculation with rice blast fungus

Project description:Rice roots grown in hydroponic culture were inoculated with rice blast fungus and gene expression profiles were analyzed by microarray Roots of two isogenic lines of rice cv Nipponbare (blast-resistance gene: Pia or pia) were inoculated with rice blast fungus, P91-15B, carrying avirulence gene, AvrPia. Total RNA was isolated from crown roots, labeled with cy3, and probed with agilent rice oligoarray (4x44).

2015-04-01 | E-GEOD-62895 | biostudies-arrayexpress

Gene expression in rice leaves (Pia) in response to inoculation with rice blast fungus

Project description:Fourth leaves of rice seedlings (4.5 leaf stage) grown in hydroponic culture were inoculated with rice blast fungus and gene expression profiles were analyzed by microarray. Fourth leaves of the two isogenic lines of rice cv Nipponbare (blast-resistance gene: Pia or its mutant, pia) were inoculated with rice blast fungus, P91-15B, carrying avirulence gene, AvrPia. Total RNA was isolated, labeled with cy3, and probed with agilent rice oligoarray (4x44).

2015-04-01 | E-GEOD-62893 | biostudies-arrayexpress

Gene expression in rice leaves (Pish) in response to inoculation with rice blast fungus

Project description:Fourth leaves of rice seedlings (4.5 leaf stage) grown in hydroponic culture were inoculated with rice blast fungus and gene expression profiles were analyzed by microarray. Fourth leaves of the two isogenic lines of rice cv Nipponbare (blast-resistance gene: Pish or its mutant, pish) were inoculated with rice blast fungus, Kyu77-07A, carrying avirulence gene, AvrPish. Total RNA was isolated, labeled with cy3, and probed with agilent rice oligoarray (4x44).

2015-04-01 | E-GEOD-62894 | biostudies-arrayexpress

Gene expression in rice roots in response to inoculation with rice blast fungus

Project description:Rice roots grown in hydroponic culture were inoculated with rice blast fungus and gene expression profiles were analyzed by microarray

2015-04-01 | GSE62895 | GEO

Gene expression in rice leaves (Pish) in response to inoculation with rice blast fungus

Project description:Fourth leaves of rice seedlings (4.5 leaf stage) grown in hydroponic culture were inoculated with rice blast fungus and gene expression profiles were analyzed by microarray.

2015-04-01 | GSE62894 | GEO

Gene expression in rice leaves (Pia) in response to inoculation with rice blast fungus

Project description:Fourth leaves of rice seedlings (4.5 leaf stage) grown in hydroponic culture were inoculated with rice blast fungus and gene expression profiles were analyzed by microarray.

2015-04-01 | GSE62893 | GEO

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