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Author Wang H., Bi Y., Gao Y., Yan Y., Yuan X., Xiong X., Wang J., Liang J., Li D., Song F.
Title A Pathogen-Inducible Rice NAC transcription factor ONAC096 Contributes to Immunity Against <i>Magnaprothe oryzae</i> and <i>Xanthomonas oryzae</i> pv. <i>oryzae</i> by Direct Binding to the Promoters of <i>OsRap2.6</i>, <i>OsWRKY62</i>, and <i>OsPAL1</i>.
Abstract:
The rice NAC transcriptional factor family harbors 151 members, and some of them play important roles in rice immunity. Here, we report the function and molecular mechanism of a pathogen-inducible NAC transcription factor, ONAC096, in rice immunity against <i>Magnaprothe oryzae</i> and <i>Xanthomonas oryzae</i> pv. <i>oryzae</i>. Expression of <i>ONAC096</i> was induced by <i>M. oryzae</i> and by abscisic acid and methyl jasmonate. ONAC096 had the DNA binding ability to NAC recognition sequence and was found to be a nucleus-localized transcriptional activator whose activity depended on its C-terminal. CRISPR/Cas9-mediated knockout of <i>ONAC096</i> attenuated rice immunity against <i>M. oryzae</i> and <i>X. oryzae</i> pv. <i>oryzae</i> as well as suppressed chitin- and flg22-induced reactive oxygen species burst and expression of PTI marker genes <i>OsWRKY45</i> and <i>OsPAL4</i>; by contrast, overexpression of <i>ONAC096</i> enhanced rice immunity against these two pathogens and strengthened chitin- or flg22-induced PTI. RNA-seq transcriptomic profiling and qRT-PCR analysis identified a small set of defense and signaling genes that are putatively regulated by ONAC096, and further biochemical analysis validated that ONAC096 could directly bind to the promoters of <i>OsRap2.6</i>, <i>OsWRKY62</i>, and <i>OsPAL1</i>, three known defense and signaling genes that regulate rice immunity. ONAC096 interacts with ONAC066, which is a positive regulator of rice immunity. These results demonstrate that ONAC096 positively contributes to rice immunity against <i>M. oryzae</i> and <i>X. oryzae</i> pv. <i>oryzae</i> through direct binding to the promoters of downstream target genes including <i>OsRap2.6</i>, <i>OsWRKY62</i>, and <i>OsPAL1</i>.
Journal Front Plant Sci
Country China
Volume 12
Pages 802758
Year 2021
PubMed ID 34956298
PubMed Central ID 8702954
DOI 10.3389/fpls.2021.802758
URL -
Relation
Gene BG3 ERF101 LOX11 LOX3 NAC66 NAC96 PAL1 PAL1 PR10A PR1B WRKY104 WRKY45 WRKY62 _
INSD -
Strain Wild Core Collection -
Induced Mutation Lines(NIG Collection) -
Sterile Seed Strain -
Lethal Embryo
Mutantion Strain
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Stages in Each Organ
- Muant Lines (Gene)
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Cultivated Varieties(NIG Collection) -
Stages in Each Organ -
/rice/oryzabase