In Silico Analysis of the Genes Encoding Proteins that Are Involved in the Biosynthesis of the RMS/MAX/D Pathway Revealed New Roles of Strigolactones in Plants

Our analysis revealed that a few of the transcription factors that are involved in the metabolic processes have their binding sites in promoter regions of the genes that were analyzed: in rice these were mainly related to alfa-amylases and sugar, whereas in Arabidopsis they were mainly related with fatty acid beta-oxidation, oxidative phosphorylation or polyamine catabolic process, which may be related to the response to flooding

Marek Marzec

2015

Scholarcy highlights

  • Strigolactones are a hormone group that has been intensively studied during the last few years. they were originally described as an inductor for the germination of the seeds of parasites, they were gradually determined to play a role in the signaling between plants and other organisms, such as fungi or bacteria, as well as in plant growth and development
  • transcription factors play a crucial role in the coordination of plant growth and development, as well in the response to different stresses because they are able to regulate the spatial expression of the many different genes that are contained in the promoter region motifs that are recognized by TFs
  • Our analysis revealed that a few of the TFs that are involved in the metabolic processes have their binding sites in promoter regions of the genes that were analyzed: in rice these were mainly related to alfa-amylases and sugar, whereas in Arabidopsis they were mainly related with fatty acid beta-oxidation, oxidative phosphorylation or polyamine catabolic process, which may be related to the response to flooding
  • The results that are presented indicate that strigolactones may be involved in plant responses to many different abiotic stresses and biotic stresses that have not been linked to this group of hormones before
  • Strigolactone production can be regulated in many different ways since genes that are involved in this process are under the regulation of the TFs that are related to almost all classes of plant hormones
  • The universal mechanism of the post-transcriptional regulation of gene activity via miRNAs was present in both species. These results indicate that up- or down-regulation of all of the components in the strigolactone biosynthesis pathway are necessary in some aspects of plant growth or adaptation to environmental stimuli
  • An even more important conclusion comes from the observation that each gene has an individual mechanism for regulation that is related to transcription factors, as well as miRNAs. These observations are consistent with experimental data that has already been published and that indicate that the role of strigolactones in stress response or plant developmental program may be restricted only to the individual stages of their production

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