Autophagy in crop plants: what's new beyond
            <i>Arabidopsis</i>
            ?

Tong, Jie; Bassham, Diane C.

doi:10.1098/rsob.180162

Cited by 62 publications

(49 citation statements)

References 139 publications

(298 reference statements)

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“…It has been proposed that LON2 can facilitate the peroxisomal matrix protein degradation during peroxisome content remodeling [48], and can also regulate pexophagy in the conversion from glyoxysomes to peroxisomes, in which the degradation of proteins as isocitrate lyase and malate synthase occurs. These two key enzymes of the glyoxylate cycle have been described as being present in peroxisomes from green and red peppers, but with a lower activity in mature fruits [16,25], i.e., similar to that found in our ripened pepper fruits. Moreover, in our case, the decrease in activity is accompanied by an increase in the protein content of LON2, in spite of the decrease in the gene expression, pointing to a degradative process in the ripened fruits.…”

Section: Discussionsupporting

confidence: 85%

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Is Autophagy Involved in Pepper Fruit Ripening?

López-Vidal

Olmedilla

Sandalio

et al. 2020

Cells

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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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Section: Discussionsupporting

confidence: 85%

“…SDS-PAGE was carried out on 15% polyacrylamide gels [16]. For Western blot analyses, 40 µg of protein from fruit extracts were transferred to nitrocellulose membranes using a semidry Trans-Blot cell (Bio-Rad, Hercules, CA, USA).…”

Section: Sds-page and Western Blotmentioning

confidence: 99%

Is Autophagy Involved in Pepper Fruit Ripening?

López-Vidal

Olmedilla

Sandalio

et al. 2020

Cells

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“…More than 40 ATG genes have been characterized in yeast. Homologs of many ATGs have been characterized in animals and plants (Tang and Bassham, 2018). At present, about 40 ATGs have been identified in Arabidopsis thaliana, most of which are homologous with yeast ATGs (Chung, 2019).…”

Section: Autophagy In Plants the Molecular Mechanism Of Autophagymentioning

confidence: 99%

Autophagy: An Intracellular Degradation Pathway Regulating Plant Survival and Stress Response

et al. 2020

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Autophagy is an intracellular process that facilitates the bulk degradation of cytoplasmic materials by the vacuole or lysosome in eukaryotes. This conserved process is achieved through the coordination of different autophagy-related genes (ATGs). Autophagy is essential for recycling cytoplasmic material and eliminating damaged or dysfunctional cell constituents, such as proteins, aggregates or even entire organelles. Plant autophagy is necessary for maintaining cellular homeostasis under normal conditions and is upregulated during abiotic and biotic stress to prolong cell life. In this review, we present recent advances on our understanding of the molecular mechanisms of autophagy in plants and how autophagy contributes to plant development and plants' adaptation to the environment.

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“…Autophagy is an evolutionarily conserved regulated mechanism of all eukaryotic cells that degrades and recycles defective organelles, toxic proteins and macromolecules, and various other aggregates to maintain cellular homeostasis during many biological processes such as development and abiotic and biotic stresses [93,94]. Accumulated evidence suggests that autophagy is involved in viral infection mainly as an antiviral mechanism by degradation of viral particles or viral proteins and/or effectors [95,96].…”

Section: Nib and Autophagymentioning

confidence: 99%

The RNA-Dependent RNA Polymerase NIb of Potyviruses Plays Multifunctional, Contrasting Roles during Viral Infection

Shen

Shi

Dai

et al. 2020

Viruses

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Potyviruses represent the largest group of known plant RNA viruses and include many agriculturally important viruses, such as Plum pox virus, Soybean mosaic virus, Turnip mosaic virus, and Potato virus Y. Potyviruses adopt polyprotein processing as their genome expression strategy. Among the 11 known viral proteins, the nuclear inclusion protein b (NIb) is the RNA-dependent RNA polymerase responsible for viral genome replication. Beyond its principal role as an RNA replicase, NIb has been shown to play key roles in diverse virus–host interactions. NIb recruits several host proteins into the viral replication complexes (VRCs), which are essential for the formation of functional VRCs for virus multiplication, and interacts with the sumoylation pathway proteins to suppress NPR1-mediated immunity response. On the other hand, NIb serves as a target of selective autophagy as well as an elicitor of effector-triggered immunity, resulting in attenuated virus infection. These contrasting roles of NIb provide an excellent example of the complex co-evolutionary arms race between plant hosts and potyviruses. This review highlights the current knowledge about the multifunctional roles of NIb in potyvirus infection, and discusses future research directions.

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Autophagy in crop plants: what's new beyond Arabidopsis ?

Cited by 62 publications

References 139 publications

Is Autophagy Involved in Pepper Fruit Ripening?

Is Autophagy Involved in Pepper Fruit Ripening?

Autophagy: An Intracellular Degradation Pathway Regulating Plant Survival and Stress Response

The RNA-Dependent RNA Polymerase NIb of Potyviruses Plays Multifunctional, Contrasting Roles during Viral Infection

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