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Variovorax sp. R1 Increased Resistance to Chilling Injury of ‘Nanguo’ pear by Regulating Sucrose Metabolism

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Abstract

Cold stress is a significant abiotic stress that profoundly impacts the quality of fruits and vegetables. This study parsed the effects of fermentation supernatant (CFS-R1) and bacterial suspension (CRS-R1) of antagonistic bacteria R1 on the physiological quality and sugar metabolism of ‘Nanguo’ pears under chilling stress. The results demonstrated that both CFS-R1 and CRS-R1 significantly reduced the browning and weight loss of the fruit and suppressed the chilling injury. The relative electrolyte leakage of CFS-R1 and CRS-R1 treated fruits were reduced by 9.4 % and 9.9 % respectively on day 7 of storage, indicating improved cell membrane stability. Furthermore, both CFS-R1 and CRS-R1 maintained the sucrose content of the fruits, with CFS-R1 also increasing the content of glucose and fructose. In conclusion, the antagonist R1 can serve as a biological preservative to enhance the cold tolerance of Nanguo pear fruit by regulating sugar metabolism.

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The datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request.

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Funding

This work was supported by National Key R & D Program of China (2021YFD2100100), the National Natural Science Foundation of China (32,171,836) and Natural Science Foundation of Liaoning Province (LJKZ0528, 2020-MZLH-37).

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Contributions

Biying Yang, Jing Wang and Shuhong Ye conceived and designed the experiment; Biying Yang performed the experiments with assistance from Wenqi Nie and Xinqi Yu; Jing Liu, Biying Yang, and Chenchen Wang analyzed the data; Biying Yang and Pengfei Guo prepared the figures and wrote the manuscript; Shuhong Ye and Yan Ding provided financial support and helped perform the analysis with constructive discussions; Shuhong Ye provided materials and laboratory apparatus. All the authors have approved the final revised manuscript.

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Correspondence to Shuhong Ye.

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The authors declare no competing interests.

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Yang, B., Ding, Y., Guo, P. et al. Variovorax sp. R1 Increased Resistance to Chilling Injury of ‘Nanguo’ pear by Regulating Sucrose Metabolism. Food Bioprocess Technol 17, 697–708 (2024). https://doi.org/10.1007/s11947-023-03167-1

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  • DOI: https://doi.org/10.1007/s11947-023-03167-1

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