Cytokinin biosynthesis genes expressed during nodule organogenesis are directly regulated by the KNOX3 protein in Medicago truncatula.

Tytuł:: Cytokinin biosynthesis genes expressed during nodule organogenesis are directly regulated by the KNOX3 protein in Medicago truncatula.
Autorzy:: Azarakhsh M; Department of Genetics and Biotechnology, Saint Petersburg State University, Saint Petersburg, Russia.; Cell and Molecular Biology Department, Kosar University of Bojnord, Bojnord, North Khorasan Province, Iran.
Rumyantsev AM; Department of Genetics and Biotechnology, Saint Petersburg State University, Saint Petersburg, Russia.
Lebedeva MA; Department of Genetics and Biotechnology, Saint Petersburg State University, Saint Petersburg, Russia.
Lutova LA; Department of Genetics and Biotechnology, Saint Petersburg State University, Saint Petersburg, Russia.
Źródło:: PloS one [PLoS One] 2020 Apr 30; Vol. 15 (4), pp. e0232352. Date of Electronic Publication: 2020 Apr 30 (Print Publication: 2020).
Typ publikacji:: Journal Article; Research Support, Non-U.S. Gov't
Język:: English
Imprint Name(s):: Original Publication: San Francisco, CA : Public Library of Science
MeSH Terms:: Gene Expression Regulation, Plant*
Cytokinins/*biosynthesis
Homeodomain Proteins/*metabolism
Medicago truncatula/*genetics
Plant Proteins/*metabolism
Transcription Factors/*metabolism
Gene Expression Regulation, Developmental ; Homeodomain Proteins/genetics ; Medicago truncatula/growth & development ; Plant Proteins/genetics ; Promoter Regions, Genetic ; Transcription Factors/genetics
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Substance Nomenclature:: 0 (Cytokinins)
0 (Homeodomain Proteins)
0 (Plant Proteins)
0 (Transcription Factors)
Entry Date(s):: Date Created: 20200501 Date Completed: 20200727 Latest Revision: 20200727
Update Code:: 20240105
PubMed Central ID:: PMC7192382
DOI:: 10.1371/journal.pone.0232352
PMID:: 32353031
: Czasopismo naukowe

Pełny tekst

Cytokinin is an important regulator of symbiotic nodule development. Recently, KNOTTED1-LIKE HOMEOBOX 3 transcription factor (TF) was shown to regulate symbiotic nodule development possibly via the activation of cytokinin biosynthesis genes. However, the direct interaction between the KNOX3 TF and its target genes has not been investigated up to date. Here, using EMSA analysis and SPR-based assay, we found that MtKNOX3 homeodomain directly binds to the regulatory sequences of the MtLOG1, MtLOG2, and MtIPT3 genes involved in nodulation in Medicago truncatula. Moreover, we showed that MtLOG2 and MtIPT3 expression patterns partially overlap with MtKNOX3 expression in developing nodules as it was shown by promoter:GUS analysis. Our data suggest that MtKNOX3 TF may directly activate the MtLOG1, MtLOG2, and MtIPT3 genes during nodulation thereby increasing cytokinin biosynthesis in developing nodules.
Competing Interests: The authors have declared that no competing interests exist.

Erratum in: PLoS One. 2020 May 29;15(5):e0234022. (PMID: 32470057)

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