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AP2/ERF transcription factors regulate salt-induced chloroplast division in the moss Physcomitrella patens.
Do, Thi Huong; Pongthai, Prapaporn; Ariyarathne, Menaka; Teh, Ooi-Kock; Fujita, Tomomichi.
Afiliação
  • Do TH; Graduate School of Life Science, Hokkaido University, Sapporo, 060-0810, Japan.
  • Pongthai P; Graduate School of Life Science, Hokkaido University, Sapporo, 060-0810, Japan.
  • Ariyarathne M; Faculty of Science and Technology, Rajamangala University of Technology, Thanyaburi, 11210, Pathum Thani, Thailand.
  • Teh OK; Faculty of Science, Hokkaido University, Sapporo, 060-0810, Japan.
  • Fujita T; Faculty of Science, Hokkaido University, Sapporo, 060-0810, Japan.
J Plant Res ; 133(4): 537-548, 2020 Jul.
Article em En | MEDLINE | ID: mdl-32314112
Chloroplast division is a critical process for the maintenance of appropriate chloroplast number in plant cells. It is known that in some plant species and cell types, environmental stresses can affect chloroplast division, differentiation and morphology, however the significance and regulation of these processes are largely unknown. Here we investigated the regulation of salt stress-induced chloroplast division in protonemal cells of the moss, Physcomitrella patens, and found that, salt stress as one of the major abiotic stresses, induced chloroplast division and resulted in increased chloroplast numbers. We further identified three APETALA2/ETHYLENE RESPONSIVE FACTOR (AP2/ERF) transcription factors (TFs) that were responsible for this regulation. These AP2/ERF genes were up-regulated under salt stress, and amino acid sequences and phylogenetic analyses indicated that all TFs possess only one conserved AP2 domain and likely belong to the same subgroup of ERF-B3 in the AP2/ERF superfamily. Overexpression of these TFs significantly increased the chloroplast number even in the absence of NaCl stress. On the contrary, inducible overexpression of the dominant repressor form of these TFs suppressed salt stress-induced chloroplast division. Thus, our results suggest that salt stress induced-chloroplast division is regulated through members of the AP2/ERF TF superfamily.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Fatores de Transcrição / Cloroplastos / Bryopsida Tipo de estudo: Prognostic_studies Idioma: En Revista: J Plant Res Ano de publicação: 2020 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Fatores de Transcrição / Cloroplastos / Bryopsida Tipo de estudo: Prognostic_studies Idioma: En Revista: J Plant Res Ano de publicação: 2020 Tipo de documento: Article