Open AccessLoss of Arabidopsis β-COP Function Affects Golgi Structure, Plant Growth and Tolerance to Salt Stress
Author(s) -
Judit Sánchez-Simarro,
César Bernat-Silvestre,
Fátima Gimeno-Ferrer,
Pilar Selvi-Martínez,
Javier MonteroPau,
Fernando Aniento,
María Jesús Marcote
Publication year - 2020
Publication title -
frontiers in plant science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.752
H-Index - 125
ISSN - 1664-462X
DOI - 10.3389/fpls.2020.00430
Subject(s) - copi , copii , golgi apparatus , endoplasmic reticulum , microbiology and biotechnology , vesicle , arabidopsis , biology , secretory pathway , chemistry , mutant , biochemistry , gene , membrane
The early secretory pathway involves bidirectional transport between the endoplasmic reticulum (ER) and the Golgi apparatus and is mediated by coat protein complex I (COPI)-coated and coat protein complex II (COPII)-coated vesicles. COPII vesicles are involved in ER to Golgi transport meanwhile COPI vesicles mediate intra-Golgi transport and retrograde transport from the Golgi apparatus to the ER. The key component of COPI vesicles is the coatomer complex, that is composed of seven subunits (α/β/β’/γ/δ/ε/ζ). In Arabidopsis two genes coding for the β-COP subunit have been identified, which are the result of recent tandem duplication. Here we have used a loss-of-function approach to study the function of β-COP. The results we have obtained suggest that β-COP is required for plant growth and salt tolerance. In addition, β-COP function seems to be required for maintaining the structure of the Golgi apparatus.