Addendum published on 13 July 2021, see
Cells 2021, 10(7), 1766.
Is Autophagy Involved in Pepper Fruit Ripening?
1
Department of Stress Biology and Plant Pathology, CEBAS-CSIC, Murcia 30100, Spain
2
Department of Biochemistry, Cellular and Molecular Biology of Plants, EEZ-CSIC, Granada 18160, Spain
*
Author to whom correspondence should be addressed.
Cells 2020, 9(1), 106; https://doi.org/10.3390/cells9010106
Received: 22 November 2019
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Revised: 23 December 2019
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Accepted: 29 December 2019
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Published: 1 January 2020
(This article belongs to the Special Issue Advances in the Plant Autophagy)
Autophagy is a universal self-degradation process involved in the removal and recycling of cellular constituents and organelles; however, little is known about its possible role in fruit ripening, in which the oxidation of lipids and proteins and changes in the metabolism of different cellular organelles occur. In this work, we analyzed several markers of autophagy in two critical maturation stages of pepper (Capsicum annuum L.) fruits where variations due to ripening become clearly visible. Using two commercial varieties that ripen to yellow and red fruits respectively, we studied changes in the gene expression and protein content of several autophagy (ATG) components, ATG4 activity, as well as the autophagy receptor NBR1 and the proteases LON1 and LON2. Additionally, the presence of intravacuolar vesicles was analyzed by electron microscopy. Altogether, our data reveal that autophagy plays a role in the metabolic changes which occur during ripening in the two studied varieties, suggesting that this process may be critical to acquiring final optimal quality of pepper fruits.
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Keywords:
autophagy; Capsicum annuum; fruit ripening; pepper; organelles; oxidative stress; vacuolar vesicles
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MDPI and ACS Style
López-Vidal, O.; Olmedilla, A.; Sandalio, L.M.; Sevilla, F.; Jiménez, A. Is Autophagy Involved in Pepper Fruit Ripening? Cells 2020, 9, 106. https://doi.org/10.3390/cells9010106
AMA Style
López-Vidal O, Olmedilla A, Sandalio LM, Sevilla F, Jiménez A. Is Autophagy Involved in Pepper Fruit Ripening? Cells. 2020; 9(1):106. https://doi.org/10.3390/cells9010106
Chicago/Turabian StyleLópez-Vidal, Omar, Adela Olmedilla, Luisa M. Sandalio, Francisca Sevilla, and Ana Jiménez. 2020. "Is Autophagy Involved in Pepper Fruit Ripening?" Cells 9, no. 1: 106. https://doi.org/10.3390/cells9010106
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