Abstract
MicroRNA constitutes an important class of small RNAs that negative regulates post-transcriptionally protein-coding genes. MiRNA-guided gene regulation has been reported as essential for developmental processes and for plant proper responses to biotic and abiotic stresses. When plants are exposed to microorganisms, they resort to various strategies to either establish a beneficial association, or to fight against pathogenic infection. These strategies include changes in metabolic pathways and modifications in gene expression states, which can be achieved by the action of miRNA-guided complexes. Plants growing in tropical regions are exposed to numerous biotic factors and can show large differences in miRNA regulation when exposed to either pathogenic or beneficial microorganisms. Recent insights in this field have begun to shed light on the role played by miRNA in plant-microbe associations. Aiming to understand how plants sense the diverse microorganisms, we review here the current knowledge of the roles played by miRNAs during plant-microbe interactions, focusing in results of studies carried out with tropical plants.
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Abbreviations
- MAMPs:
-
Microbe-associated molecular patterns
- PRR:
-
Pattern recognition receptors
- ROS:
-
Reactive oxygen species
- PR:
-
Pathogenesis-related
- AM:
-
Arbuscular mycorrhizal
- sRNA:
-
Small non-coding RNA
- siRNA:
-
Small interference RNA
- DCLs:
-
DICER-Like
- Flg22:
-
Flagellin-derived peptide
- TCP:
-
Teosinte Branched1/ Cycloidea/Proliferating Cell factor1
- LOX2:
-
Lipoxygenase 2
- JA:
-
Jasmonate
- CSD:
-
Copper superoxide dismutase
- Las:
-
Candidatus Liberibacter asiaticus
- Pi:
-
Phosphate
- S:
-
Sulfate
- ARF:
-
Auxin response factor
- easiRNA:
-
‘Epigenetically activated’ small interfering RNAs
- NSP2:
-
Nodulation-signaling pathway 2
- NBS-LRR:
-
Nucleotide binding site–leucine-rich repeat
- TBP:
-
TATA box binding protein
- APS:
-
ATP sulfurylase
- SULTR:
-
Sulfate transporter
- SCFTIR :
-
SKP1, Cullin and F-box protein
- AUX/IAA:
-
Auxin/indole-3-acetic acid
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Acknowledgments
The authors thank INCT (Instituto Nacional de Ciência de Tecnologia) in Biological Nitrogen Fixation, FAPERJ (Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro), CNPq (Conselho Nacional de Desenvolvimento Científico e Tecnológico) and CAPES (Coordenação de Aperfeiçoamento de Pessoal de Nível Superior) for the financial support. FT and CG are indebted to the CNPq and FAPERJ for fellowships. The authors thank Andre Ferreira for language editing.
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The authors state that there are no conflicts of interest in this work. The research presented in this manuscript does not involve the use of animals or human participants. All authors are in agreement with the final version of the manuscript.
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Communicated by: Ray Ming
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Thiebaut, F., Grativol, C., Hemerly, A.S. et al. MicroRNA Networks in Plant-Microorganism Interactions. Tropical Plant Biol. 8, 40–50 (2015). https://doi.org/10.1007/s12042-015-9149-9
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DOI: https://doi.org/10.1007/s12042-015-9149-9