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Journal Article Epublish 21 citations

PubMed: 36818368 DOI: 10.1093/hr/uhac282

regulates the accumulation of lycopene, fruit shape, and resistance to in tomato.

Hortic Res 10(2):uhac282

Authors: Ziyi Yin, Jiazong Liu, Haipeng Zhao, Xiaomeng Chu, Haoqi Liu, Xiangyu Ding, Chongchong Lu, Xinyu Wang, Xiangyu Zhao, Yang Li, Xinhua Ding

Affiliations

  • State Key Laboratory of Crop Biology, Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of plant protection, Shandong Agricultural University, Taian 271018, Shandong, China.
  • State Key Laboratory of Crop Biology, College of Academy of Life Science, Shandong Agricultural University, Taian 271018, Shandong, China.
  • State Key Laboratory of Crop Biology, Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of plant protection, Shandong Agricultural University, Taian 271018, Shandong, China. State Key Laboratory of Crop Biology, College of Academy of Life Science, Shandong Agricultural University, Taian 271018, Shandong, China.

Abstract

Fruit lycopene, shape, and resistance are essential traits in vegetables whose final product is fruit, and they are also closely related to and strictly regulated by multiple transcription factors. Lycopene, which cannot be synthesized by the human body and can only be ingested from the outside, was important in maintaining human health. During fruit ripening and post-harvest, tomato plants face a variety of biotic or abiotic stresses, which might inflict great damage to fruit quality due to its flat shape and pointed tip during storage and transportation. Therefore, there is an urgent need for key molecular switches to simultaneously improve fruit lycopene and resistance to biotic stress during ripening. Here, we identified the MYB transcription factor in tomato plants which could bind to the promoters of lycopene synthesis-related genes, , and the pathogen-related gene directly, to regulate the fruit lycopene and resistance to in tomato. In addition to regulating lycopene synthesis, also regulates the content of soluble sugar, soluble protein and flavonoid in tomato. What's more, could regulate the tomato fruit shape, making it smoother or flatter to prevent skin damage caused by vibration on fruits. RNA sequencing (RNA-seq) further showed that fruit-specific expression lines had multiple differentially expressed genes compared with those from wild-type plants, suggesting that might have multiple roles in fruit nutritional quality control and resistance to stresses, which is a rare occurrence in previous studies. In summary, our results revealed that was an essential multi-functional transcription factor that could regulate the lycopene and resistance to , and change the shape of fruit in tomato plants.

MeSH

Rna, Fruit, Transcription Factors, Stress, Physiological, Genes, Lycopene

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