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Transcriptome analysis of strawberry fruit in response to exogenous arginine

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Abstract

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Transcriptome and physiological analysis showed that exogenous arginine can delay the ripening process of postharvest strawberry fruit.

Abstract

Arginine (Arg) plays an important role in the growth and development of plants, but its growth and development regulatory mechanisms in strawberry fruit are unknown. In this study, we found that the content of Arg decreased after the onset of fruit coloration and exogenous Arg inhibited fruit coloration. We comprehensively analyzed the transcriptome of ‘Sweet Charlie’ strawberry fruit with or without Arg treatment and identified a large number of differential genes and metabolites. Based on the transcriptome data, we also found that Arg inhibited ripening, which coincided with changes in several physiological parameters and their corresponding gene transcripts, including firmness, anthocyanin content, sugar content, Arg content, indole-acetic acid (IAA) content, abscisic acid (ABA) content, and ethylene emissions. We also found that Arg induced the expression of heat-shock proteins (HSPs) and antioxidant enzyme genes, which improved strawberry stress resistance. This study elucidated the molecular mechanism by which exogenous Arg delays strawberry fruit ripening, providing some genetic information to help guide the future improvement and cultivation of strawberry.

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Abbreviations

BR:

Brassinosteroid

DEGs:

Differentially expressed genes

EXP:

Expansin

GA:

Gibberellin

HSP:

Heat-shock protein

JA:

Jasmonic acid

PA:

Polyamine

PE:

Pectinesterase

PG:

Polygalacturonase

Put:

Putrescine

SA:

Salicylic acid

SOD:

Superoxide dismutase

Spd:

Spermidine

Spm:

Spermine

TFs:

Transcription factors

UFGT:

UDP-glucose flavonoid 3-O-glucosyltransferase

XTH:

Xyloglucan endotransglucosylase/hydrolase

β-Gal:

Beta-galactosidase

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Acknowledgements

We would like to express our gratitude to Central Laboratory of College of Horticulture, Nanjing Agricultural University. We thank Shaoyan Lin from the State Key Laboratory of Crop Genetics & Germplasm Enhancement for helping me analyze GC-MS data. We thank LetPub (www.letpub.com) for its linguistic assistance during the preparation of this manuscript. This study was supported by Jiangsu Excellent Youth Fund Project (BK20180076), Jiangsu Independent Innovation of Agricultural Science and Technology (CX(19)3088), National Natural Science Foundation of China (31872938, 31872047), Fundamental Research Funds for Central Universities (KYXJ202003).

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Correspondence to Haifeng Jia.

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Communicated by Dorothea Bartels.

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Lv, J., Pang, Q., Chen, X. et al. Transcriptome analysis of strawberry fruit in response to exogenous arginine. Planta 252, 82 (2020). https://doi.org/10.1007/s00425-020-03489-w

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  • DOI: https://doi.org/10.1007/s00425-020-03489-w

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