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Reference Detail
| Reference | ||
|---|---|---|
| Author | Valette M., Rey M., Doré J., Gerin F., Wisniewski-Dyé F. | |
| Title | Identification of a small set of genes commonly regulated in rice roots in response to beneficial rhizobacteria. | |
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Abstract: Rhizosphere bacteria, whether phytopathogenic or phytobeneficial, are thought to be perceived by the plant as a threat. Plant Growth-Promoting Rhizobacteria (PGPR), such as many strains of the <i>Azospirillum</i> genus known as the main phytostimulator of cereals, cooperate with host plants and favorably affect their growth and health. An earlier study of rice root transcriptome, undertaken with two rice cultivars and two <i>Azospirillum</i> strains, revealed a strain-dependent response during the rice-<i>Azospirillum</i> association and showed that only a few genes, including some implicated in plant defense, were commonly regulated in all tested conditions. Here, a set of genes was selected from previous studies and their expression was monitored by qRT-PCR in rice roots inoculated with ten PGPR strains isolated from various plants and belonging to various genera (<i>Azospirillum</i>, <i>Herbaspirillum</i>, <i>Paraburkholderia</i>). A common expression pattern was highlighted for four genes that are proposed to be markers of the rice-PGPR interaction: two genes involved in diterpenoid phytoalexin biosynthesis (<i>OsDXS3</i> and <i>OsDTC2</i>) and one coding for an uncharacterized protein (<i>Os02g0582900</i>) were significantly induced by PGPR whereas one defense-related gene encoding a pathogenesis-related protein (PR1b, <i>Os01g0382000</i>) was significantly repressed. Interestingly, exposure to a rice bacterial pathogen also triggered the expression of <i>OsDXS3</i> while the expression of <i>Os02g0582900</i> and <i>PR1b</i> was down-regulated, suggesting that these genes might play a key role in rice-bacteria interactions. Integration of these results with previous data led us to propose that the jasmonic acid signaling pathway might be triggered in rice roots upon inoculation with PGPR. |
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| Journal | Physiol Mol Biol Plants | |
| Country | French Republic | |
| Volume | 26(12) | |
| Pages | 2537-2551 | |
| Year | 2020 | |
| PubMed ID | 33424163 | |
| PubMed Central ID | 7772126 | |
| DOI | 10.1007/s12298-020-00911-1 | |
| URL | - | |
| Relation | ||
| Gene | CPS4 D305 DXS3 FAD2-3 IPD3 KS8 PAL1 PR10B PR1B RR9 WAK74 WRKY62 _ _ | |
| INSD | - | |
| Strain | Wild Core Collection | - |
| Induced Mutation Lines(NIG Collection) | - | |
| Sterile Seed Strain | - | |
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Lethal Embryo Mutantion Strain |
- | |
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Stages in Each Organ - Muant Lines (Gene) |
- | |
| Cultivated Varieties(NIG Collection) | - | |
| Stages in Each Organ | - | |
