The Multifunctional <i>Anaphase Promoting Complex 7</i> (<i>APC7</i>) Gene Is Associated With Increased Plant Growth and Improved Resistance to DNA and RNA Viruses

The anaphase promoting complex 7 (AtAPC7) is an APC/C subunit expressed in different organs of Arabidopsis thaliana and conserved among eukaryotes. A variant of the complete APC7 protein, containing its C-terminal region (named APC-CT), shows a high homology with a tobacco viral replication inhibitor (IVR-like) protein that reduces plant susceptibility to RNA viruses. Here, the role of the AtAPC7 gene was investigated by characterizing Arabidopsis plants overexpressing the full-length AtAPC7 (APC7<sup>OE</sup>) and the C-terminal portion (APC7-CT<sup>OE</sup>), by phenotypical, physiological and molecular approaches. APC7<sup>OE</sup> plants showed improved growth of vegetative organs, earlier flowering and increased photosynthetic efficiency, CO<sub>2</sub> assimilation and productivity, compared with Col-0 control plants. Conversely, APC7-CT<sup>OE</sup> plants showed reduced susceptibility to both RNA and DNA viruses, along with an improvement in plant growth, although not surpassing APC7<sup>OE</sup> plants. Altogether, the data provide evidence for the role of the AtAPC7 in regulating cell division, expansion and differentiation, accompanied by an increase in photosynthetic capacity, resulting in enhanced plant biomass and seed yield. AtAPC7-CT might reduce growth-defence trade-offs, enabling plants to simultaneously defend themselves while promoting better growth. Our findings highlight the multifunctional role of AtAPC7, unveiling the potential of its orthologous genes as valuable biotechnological tools in important crops.

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Publication Details

Journal
Plant Cell & Environment
Published
2024-11-04
DOI
https://doi.org/10.1111/pce.15248
Citations
2
Primary Topic
Plant Molecular Biology Research
Type
article
Field-Weighted Citation Impact
1.20
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article

The Multifunctional Anaphase Promoting Complex 7 (APC7) Gene Is Associated With Increased Plant Growth and Improved Resistance to DNA and RNA Viruses

Bruna Gino de Araújo‐Lopes, Fábio Nascimento da Silva, Wallace de Paula Bernado, Maria Fátima Grossi‐de‐Sá et al.
2 citations
Plant Cell & Environment
Plant Molecular Biology Research
1.20
article

The Multifunctional Anaphase Promoting Complex 7 (APC7) Gene Is Associated With Increased Plant Growth and Improved Resistance to DNA and RNA Viruses

Bruna Gino de Araújo‐Lopes, Fábio Nascimento da Silva, Wallace de Paula Bernado, Maria Fátima Grossi‐de‐Sá, Marcos Fernando Basso, Aline Cunha da Silva, Eliemar Campostrini, Patrícia Montessoro, Lygia Dolores Ribeiro de Santiago-Fernandes, Flávia Thiebaut, Núbia Barbosa Eloy, Adriana Silva Hemerly, Tainã Carvalho, Aline Köhn Carneiro, Janice de Almeida Engler, Marcelo de Freitas Lima
article en
2 citations

Abstract

The anaphase promoting complex 7 (AtAPC7) is an APC/C subunit expressed in different organs of Arabidopsis thaliana and conserved among eukaryotes. A variant of the complete APC7 protein, containing its C-terminal region (named APC-CT), shows a high homology with a tobacco viral replication inhibitor (IVR-like) protein that reduces plant susceptibility to RNA viruses. Here, the role of the AtAPC7 gene was investigated by characterizing Arabidopsis plants overexpressing the full-length AtAPC7 (APC7<sup>OE</sup>) and the C-terminal portion (APC7-CT<sup>OE</sup>), by phenotypical, physiological and molecular approaches. APC7<sup>OE</sup> plants showed improved growth of vegetative organs, earlier flowering and increased photosynthetic efficiency, CO<sub>2</sub> assimilation and productivity, compared with Col-0 control plants. Conversely, APC7-CT<sup>OE</sup> plants showed reduced susceptibility to both RNA and DNA viruses, along with an improvement in plant growth, although not surpassing APC7<sup>OE</sup> plants. Altogether, the data provide evidence for the role of the AtAPC7 in regulating cell division, expansion and differentiation, accompanied by an increase in photosynthetic capacity, resulting in enhanced plant biomass and seed yield. AtAPC7-CT might reduce growth-defence trade-offs, enabling plants to simultaneously defend themselves while promoting better growth. Our findings highlight the multifunctional role of AtAPC7, unveiling the potential of its orthologous genes as valuable biotechnological tools in important crops.

Plant Cell & EnvironmentVol. 48(3)
Universidade Federal do Rio de Janeiro (BR), Centre National de la Recherche Scientifique (FR), Universidade Federal de Viçosa (BR), Universidade Federal Fluminense (BR), Universidade Federal Rural do Rio de Janeiro (BR), Universidade Metodista de São Paulo (BR), Universidade do Estado de Santa Catarina (BR), Universidade de São Paulo (BR), Brazilian Agricultural Research Corporation (BR), Université Côte d'Azur (FR), State University of Norte Fluminense (BR), Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement (FR), Biotech (Brazil) (BR), Institut Sophia Agrobiotech (FR), Universidade Federal do Estado do Rio de Janeiro (BR)
Openalex Percentile: Top 16%
Plant Molecular Biology Research
1.20
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