The Multifunctional Anaphase Promoting Complex 7 (APC7) Gene Is Associated With Increased Plant Growth and Improved Resistance to DNA and RNA Viruses
Year: 2024
Type: article
Abstract: 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 (APC7OE) and the C‐terminal portion (APC7‐CTOE), by phenotypical, physiological and molecular approaches. APC7OE plants showed improved growth of vegetative organs, earlier flowering and increased photosynthetic efficiency, CO2 assimilation and productivity, compared with Col‐0 control plants. Conversely, APC7‐CTOE plants showed reduced susceptibility to both RNA and DNA viruses, along with an improvement in plant growth, although not surpassing APC7OE 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.
Source: Plant Cell & Environment
DOI: 10.1111/pce.15248
Authors: Bruna Gino de Araújo‐Lopes, Marcos Fernando Basso, Thiago Bretz Carvalho, Patrícia Montessoro, Aline Köhn Carneiro, Aline Cunha da Silva, Marcelo de Freitas Lima, Nubia Barbosa Eloy, Fabio Nascimento da Silva, Flávia Thiebaut, Wallace de Paula Bernado, Eliemar Campostrini, Janice de Almeida Engler, Lygia Santiago‐Fernandes, Maria Fatima Grossi‐de‐Sa, Adriana Silva Hemerly
Institutions: Universidade Federal do Rio de Janeiro, Brazilian Agricultural Research Corporation, Embrapa Recursos Genéticos e Biotecnologia, Universidade Federal Rural do Rio de Janeiro, Universidade de São Paulo, Universidade Federal de Viçosa, Universidade do Estado de Santa Catarina, Universidade Federal Fluminense, State University of Norte Fluminense, Centre National de la Recherche Scientifique, Université Côte d'Azur, Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement, Institut Sophia Agrobiotech
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: green
OpenAlex ID: W4404086475