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159 results on '"Lv, Jingyi"'

15. Genome-wide isolation and expression analysis of vacuolar processing enzyme (VPE) gene family in four apple cultivars with different storability.

Author

Zhang, Yingzhi, Lv, Jingyi, Zhang, Liang, Ge, Yonghong, Chen, Jingxin, and Zhu, Danshi

Subjects
GENE expression, GENE families, ELECTRIC conductivity, MALONDIALDEHYDE, ETHYLENE
Abstract

This research was undertaken to determine expression patterns of vacuolar processing enzyme (VPE) genes in four apple (Malus domestica (Suckow) Borkh) cultivars 'Royal Gala (RG)', 'Golden Delicious (GD)', 'Ralls Janet (RJ)' and 'Fuji (FJ)' during ripening. The results showed that GD and RG had higher respiration rate, ethylene production, content of malondialdehyde (MDA), relative electrical conductivity (REC) and VPE activity than RJ and FJ during ripening. A total of 17 MdVPEs were found to be expressed in four cultivars. These MdVPEs exhibited different expression patterns during ripening of four cultivars. Generally, MdVPEβ1, MdVPEγ2, MdVPEγ4 and MdVPEδ7 might be closely associated with ripening of all cultivars. MdVPEα6 might have a role in the early period of ripening of ACS1–2/-2 (1-Aminocyclopropane-1-carboxylate synthase) homozygous cultivars (RG, RJ and FJ). Our data here would be helpful in understanding the associations between MdVPEs and storage properties of different apple cultivars. [ABSTRACT FROM AUTHOR]

Published
2024
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27. Comprehensive responses of aroma production in 'Benihoppe' strawberry to low oxygen associated with the changes of key gene expressions and energy levels.

Author

Chen, Jingxin, Zhang, Demei, Zhang, Xiaohan, Feng, Xuqiao, Mi, Hongbo, Ge, Yonghong, and Lv, Jingyi

Subjects
GENE expression, STRAWBERRIES, CHEMICAL industry, OXYGEN, ACETALDEHYDE
Abstract

BACKGROUND: The influence of low oxygen on the biosynthesis of aroma‐related esters and alcohols in strawberries has been well revealed. However, how low‐oxygen conditions affect other volatile compounds, such as terpenes and furans, is still to be elucidated. RESULTS: The effects of 2 kPa O2 low oxygen on the biosynthesis of aroma in 'Benihoppe' strawberries were comprehensively investigated in this study. The results showed that, like esters, the accumulations of key terpene alcohols and furans in strawberries were also inhibited by 2 kPa O2 low oxygen during storage and subsequent shelf life, which was associated with the down‐regulation of expression of FaNES1 (nerolidol synthase) and FaOMT (O‐methyltransferase). However, no anaerobic fermentation occurred in 'Benihoppe' strawberries since no ethanol and acetaldehyde were produced under the 2 kPa O2 condition. As expected, the 2 kPa O2 condition suppressed the respiratory intensity and lowered the energy charge to maintain the quality of strawberries. The negative effects of low‐oxygen storage on aroma accumulations and the energy charge of strawberries were more pronounced when transferred to the period of shelf life. CONCLUSION: The 2 kPa O2 condition caused a full‐scale loss of aroma in 'Benihoppe' strawberries, including esters and alcohols as well as terpenes and furans, which was mainly reflected in the reduction of aroma emissions rather than the production of off‐flavor, probably due to the reduced expressions of related genes and energy charge. © 2022 Society of Chemical Industry. [ABSTRACT FROM AUTHOR]

Published
2023
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