Discovery of Gene Regulation Mechanisms Associated with Uniconazole-induced Cold Tolerance in Banana Using Integrated Transcriptome and Metabolome Analysis

Overview

Journal BMC Plant Biol

Publisher Biomed Central

Specialty Biology

Date 2024 Apr 26

PMID 38671368

Authors

Liuyan Qin

Dandan Tian

Chenglin Guo

Liping Wei

Zhangfei He

Wei Zhou

Quyan Huang

Baoshen Li

Chaosheng Li

Mengyun Jiang

Affiliations

Soon will be listed here.

Abstract

Background: The gibberellic acid (GA) inhibitor, uniconazole, is a plant growth regulator commonly used in banana cultivation to promote dwarfing but also enhances the cold resistance in plants. However, the mechanism of this induced cold resistance remains unclear.

Results: We confirmed that uniconazole induced cold tolerance in bananas and that the activities of Superoxide dismutase and Peroxidase were increased in the uniconazole-treated bananas under cold stress when compared with the control groups. The transcriptome and metabolome of bananas treated with or without uniconazole were analyzed at different time points under cold stress. Compared to the control group, differentially expressed genes (DEGs) between adjacent time points in each uniconazole-treated group were enriched in plant-pathogen interactions, MAPK signaling pathway, and plant hormone signal transduction, which were closely related to stimulus-functional responses. Furthermore, the differentially abundant metabolites (DAMs) between adjacent time points were enriched in flavone and flavonol biosynthesis and linoleic acid metabolism pathways in the uniconazole-treated group than those in the control group. Temporal analysis of DEGs and DAMs in uniconazole-treated and control groups during cold stress showed that the different expression patterns in the two groups were enriched in the linoleic acid metabolism pathway. In addition to strengthening the antioxidant system and complex hormonal changes caused by GA inhibition, an enhanced linoleic acid metabolism can protect cell membrane stability, which may also be an important part of the cold resistance mechanism of uniconazole treatment in banana plants.

Conclusions: This study provides information for understanding the mechanisms underlying inducible cold resistance in banana, which will benefit the production of this economically important crop.

Citing Articles

Transcriptome and metabolome analyses reveal that GA3ox regulates the dwarf trait in mango (Mangifera indica L.).

Zhang Y, Pang X, Li M, Zhang J, Zhao Y, Tang Y BMC Plant Biol. 2024; 24(1):1025.

PMID: 39472789 PMC: 11520834. DOI: 10.1186/s12870-024-05700-6.

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