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NITRILASE1 regulates the exit from proliferation, genome stability and plant development
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SYSNO ASEP 0399060 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title NITRILASE1 regulates the exit from proliferation, genome stability and plant development Author(s) Doskočilová, Anna (MBU-M)
Kohoutová, Lucie (MBU-M) RID
Volc, Jindřich (MBU-M) RID
Kourová, Hana (MBU-M)
Benada, Oldřich (MBU-M) ORCID, RID
Chumová, Jana (MBU-M)
Plíhal, Ondřej (MBU-M)
Petrovská, Beáta (UEB-Q) RID, ORCID
Halada, Petr (MBU-M) RID, ORCID
Bögre, L. (GB)
Binarová, Pavla (MBU-M) RID, ORCIDSource Title New Phytologist - ISSN 0028-646X
Roč. 198, č. 3 (2013), s. 685-698Number of pages 14 s. Language eng - English Country GB - United Kingdom Keywords Arabidopsis ; cell cycle ; cytokinesis Subject RIV EE - Microbiology, Virology R&D Projects GAP501/12/2333 GA ČR - Czech Science Foundation (CSF) Institutional support MBU-M - RVO:61388971 ; UEB-Q - RVO:61389030 UT WOS 000317682900009 DOI 10.1111/nph.12185 Annotation Nitrilases are highly conserved proteins with catabolic activity but much less understood functions in cell division and apoptosis. To elucidate the biological functions of Arabidopsis NITRILASE1, we characterized its molecular forms, cellular localization and involvement in cell proliferation and plant development. We performed biochemical and mass spectrometry analyses of NITRILASE1 complexes, electron microscopy of nitrilase polymers, imaging of developmental and cellular distribution, silencing and overexpression of nitrilases to study their functions. We found that NITRILASE1 has an intrinsic ability to form filaments. GFP-NITRILASE1 was abundant in proliferating cells, distributed in cytoplasm, in the perinuclear area and associated with microtubules. As cells exited proliferation and entered differentiation, GFP-NITRILASE1 became predominantly nuclear. Nitrilase silencing dose-dependently compromised plant growth, led to loss of tissue organization and sustained proliferation. Cytokinesis was frequently aborted, leading to enlarged polyploid cells. In reverse, independently transformed cell lines overexpressing GFP-NITRILASE1 showed slow growth and increased rate of programmed cell death. Altogether, our data suggest that NITRILASE1 homologues regulate the exit from cell cycle and entry into differentiation and simultaneously are required for cytokinesis. These functions are essential to maintain normal ploidy, genome stability and tissue organization Workplace Institute of Microbiology Contact Eliška Spurná, eliska.spurna@biomed.cas.cz, Tel.: 241 062 231 Year of Publishing 2014
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