AINTEGUMENTA and the D-type cyclin CYCD3;1 regulate root secondary growth and respond to cytokinins

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http://hdl.handle.net/10138/166638

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Randall , R S , Miyashima , S , Blomster , T , Zhang , J , Elo , A , Karlberg , A , Immanen , J , Nieminen , K , Lee , J-Y , Kakimoto , T , Blajecka , K , Melnyk , C W , Alcasabas , A , Forzani , C , Matsumoto-Kitano , M , Mähönen , A P , Bhalerao , R , Dewitte , W , Helariutta , Y & Murray , J A H 2015 , ' AINTEGUMENTA and the D-type cyclin CYCD3;1 regulate root secondary growth and respond to cytokinins ' , Biology open , vol. 4 , no. 10 , pp. 1229-1236 . https://doi.org/10.1242/bio.013128

Title: AINTEGUMENTA and the D-type cyclin CYCD3;1 regulate root secondary growth and respond to cytokinins
Author: Randall, Ricardo S.; Miyashima, Shunsuke; Blomster, Tiina; Zhang, Jing; Elo, Annakaisa; Karlberg, Anna; Immanen, Juha; Nieminen, Kaisa; Lee, Ji-Young; Kakimoto, Tatsuo; Blajecka, Karolina; Melnyk, Charles W.; Alcasabas, Annette; Forzani, Celine; Matsumoto-Kitano, Miho; Mähönen, Ari Pekka; Bhalerao, Rishikesh; Dewitte, Walter; Helariutta, Yrjö; Murray, James A. H.
Contributor: University of Helsinki, Osaka Univ, Osaka University, Grad Sch Sci, Dept Biol Sci
University of Helsinki, Institute of Biotechnology
University of Helsinki, Institute of Biotechnology
University of Helsinki, Institute of Biotechnology
University of Helsinki, Institute of Biotechnology
University of Helsinki, Institute of Biotechnology
University of Helsinki, Institute of Biotechnology
University of Helsinki, Institute of Biotechnology
Date: 2015-10-15
Language: eng
Number of pages: 8
Belongs to series: Biology open
ISSN: 2046-6390
URI: http://hdl.handle.net/10138/166638
Abstract: Higher plant vasculature is characterized by two distinct developmental phases. Initially, a well-defined radial primary pattern is established. In eudicots, this is followed by secondary growth, which involves development of the cambium and is required for efficient water and nutrient transport and wood formation. Regulation of secondary growth involves several phytohormones, and cytokinins have been implicated as key players, particularly in the activation of cell proliferation, but the molecular mechanisms mediating this hormonal control remain unknown. Here we show that the genes encoding the transcription factor AINTEGUMENTA (ANT) and the D-type cyclin CYCD3;1 are expressed in the vascular cambium of Arabidopsis roots, respond to cytokinins and are both required for proper root secondary thickening. Cytokinin regulation of ANT and CYCD3 also occurs during secondary thickening of poplar stems, suggesting this represents a conserved regulatory mechanism.
Subject: Cytokinins
Secondary growth
Cyclin D
AINTEGUMENTA
Root development
CELL-DIVISION
ARABIDOPSIS-THALIANA
VASCULAR DEVELOPMENT
APETALA2-LIKE GENE
SIZE CONTROL
PLANT
WOOD
TRANSFORMATION
PROLIFERATION
ORGANIZATION
1183 Plant biology, microbiology, virology
1182 Biochemistry, cell and molecular biology
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