scholarly journals Autophagy Is Required for Strawberry Fruit Ripening

2021 ◽  
Vol 12 ◽  
Author(s):  
José F. Sánchez-Sevilla ◽  
Miguel A. Botella ◽  
Victoriano Valpuesta ◽  
Victoria Sanchez-Vera

Autophagy is a catabolic and recycling pathway that maintains cellular homeostasis under normal growth and stress conditions. Two major types of autophagy, microautophagy and macroautophagy, have been described in plants. During macroautophagy, cellular content is engulfed by a double-membrane vesicle called autophagosome. This vesicle fuses its outer membrane with the tonoplast and releases the content into the vacuole for degradation. During certain developmental processes, autophagy is enhanced by induction of several autophagy-related genes (ATG genes). Autophagy in crop development has been studied in relation to leaf senescence, seed and reproductive development, and vascular formation. However, its role in fruit ripening has only been partially addressed. Strawberry is an important berry crop, representative of non-climacteric fruit. We have analyzed the occurrence of autophagy in developing and ripening fruits of the cultivated strawberry. Our data show that most ATG genes are conserved in the genome of the cultivated strawberry Fragaria x ananassa and they are differentially expressed along the ripening of the fruit receptacle. ATG8-lipidation analysis proves the presence of two autophagic waves during ripening. In addition, we have confirmed the presence of autophagy at the cellular level by the identification of autophagy-related structures at different stages of the strawberry ripening. Finally, we show that blocking autophagy either biochemically or genetically dramatically affects strawberry growth and ripening. Our data support that autophagy is an active and essential process with different implications during strawberry fruit ripening.

PLoS ONE ◽  
2021 ◽  
Vol 16 (6) ◽  
pp. e0252685
Author(s):  
Gibum Yi ◽  
Hosub Shin ◽  
Kyeonglim Min ◽  
Eun Jin Lee

Strawberry is an important fruit crop and a model for studying non-climacteric fruit ripening. Fruit ripening and senescence influence strawberry fruit quality and postharvest storability, and have been intensively studied. However, genetic and physiological differences among cultivars preclude consensus understanding of these processes. We therefore performed a meta-analysis by mapping existing transcriptome data to the newly published and improved strawberry reference genome and extracted meta-differentially expressed genes (meta-DEGs) from six cultivars to provide an expanded transcriptomic view of strawberry ripening. We identified cultivar-specific transcriptome changes in anthocyanin biosynthesis-related genes and common changes in cell wall degradation, chlorophyll degradation, and starch metabolism-related genes during ripening. We also identified 483 meta-DEGs enriched in gene ontology categories related to photosynthesis and amino acid and fatty acid biosynthesis that had not been revealed in previous studies. We conclude that meta-analysis of existing transcriptome studies can effectively address fundamental questions in plant sciences.


2018 ◽  
Vol 19 (1) ◽  
Author(s):  
Jingfei Cheng ◽  
Qingfeng Niu ◽  
Bo Zhang ◽  
Kunsong Chen ◽  
Ruihua Yang ◽  
...  

2021 ◽  
Vol 281 ◽  
pp. 109919
Author(s):  
Sirvan Mansouri ◽  
Hassan Sarikhani ◽  
Mohammad Sayyari ◽  
Morteza Soleimani Aghdam

Planta ◽  
2021 ◽  
Vol 255 (1) ◽  
Author(s):  
Yunting Zhang ◽  
Yu Long ◽  
Yiting Liu ◽  
Min Yang ◽  
Liangxin Wang ◽  
...  

2013 ◽  
Vol 64 (14) ◽  
pp. 4421-4439 ◽  
Author(s):  
Catharina Merchante ◽  
José G. Vallarino ◽  
Sonia Osorio ◽  
Irene Aragüez ◽  
Natalia Villarreal ◽  
...  

2012 ◽  
Vol 69 (1) ◽  
pp. 63-69 ◽  
Author(s):  
Ye-mao Chai ◽  
Qing Zhang ◽  
Lin Tian ◽  
Chun-Li Li ◽  
Yu Xing ◽  
...  

PLoS Genetics ◽  
2021 ◽  
Vol 17 (3) ◽  
pp. e1009461
Author(s):  
Yajun Tang ◽  
Zhipeng Qu ◽  
Jiajun Lei ◽  
Reqing He ◽  
David L. Adelson ◽  
...  

Long noncoding RNAs (lncRNAs) are emerging as important regulators in plant development, but few of them have been functionally characterized in fruit ripening. Here, we have identified 25,613 lncRNAs from strawberry ripening fruits based on RNA-seq data from poly(A)-depleted libraries and rRNA-depleted libraries, most of which exhibited distinct temporal expression patterns. A novel lncRNA, FRILAIR harbours the miR397 binding site that is highly conserved in diverse strawberry species. FRILAIR overexpression promoted fruit maturation in the Falandi strawberry, which was consistent with the finding from knocking down miR397, which can guide the mRNA cleavage of both FRILAIR and LAC11a (encoding a putative laccase-11-like protein). Moreover, LAC11a mRNA levels were increased in both FRILAIR overexpressing and miR397 knockdown fruits, and accelerated fruit maturation was also found in LAC11a overexpressing fruits. Overall, our study demonstrates that FRILAIR can act as a noncanonical target mimic of miR397 to modulate the expression of LAC11a in the strawberry fruit ripening process.


Genomics ◽  
2020 ◽  
Vol 112 (3) ◽  
pp. 2369-2378
Author(s):  
Yunxiang Wang ◽  
Wensheng Li ◽  
Hong Chang ◽  
Jiahua Zhou ◽  
Yunbo Luo ◽  
...  

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