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ORIGINAL RESEARCH article

Front. Plant Sci.
Sec. Plant Metabolism and Chemodiversity
Volume 15 - 2024 | doi: 10.3389/fpls.2024.1467957

Integrated volatile metabolome and transcriptome analyses provide insights into the warm aroma formation elicited by methyl jasmonate in carrot root

Provisionally accepted
Guang-Long Wang Guang-Long Wang 1*Jia-Qi Wu Jia-Qi Wu 1Yang-Yang Chen Yang-Yang Chen 1Yu -Jie Xu Yu -Jie Xu 1Ya -Hong An Ya -Hong An 1Xu-Qin Ren Xu-Qin Ren 1Ai-Sheng Xiong Ai-Sheng Xiong 2*
  • 1 Huaiyin Institute of Technology, Huaiyin, China
  • 2 Nanjing Agricultural University, Nanjing, Jiangsu Province, China

The final, formatted version of the article will be published soon.

    Carrot is a highly significant vegetable cultivated worldwide and possesses a unique aroma with abundant edible and medicinal values. However, it remains largely unknown whether jasmonic acid could regulate aroma formation in carrot. Here, an integrated analysis of the volatile metabolome and transcriptome of carrot roots exposed to different concentrations of methyl jasmonate (MeJA) was performed. The results revealed 1,227 volatile organic compounds and 972 differential accumulated metabolites, with terpenes representing the largest portion. MeJA treatment evidently increased the relative odor activity values as well as the accumulation of most volatile compounds. In addition, 4,787 differentially expressed genes were identified and subjected to function enrichment analysis, indicating a role of terpene biosynthesis and metabolism in response to MeJA application. A network consisting of 4,680 transcription factor-structural pairs that showed highly significant positive correlations was constructed, which may be utilized as genetic targets for examining terpene accumulation and aroma formation elicited by methyl jasmonate. The results from the present work substantially improved our understanding of MeJA-mediated aroma formation in carrot.

    Keywords: Volatile metabolome, Transcriptome, MeJA, Terpenes, transcription-structural genes, carrot

    Received: 21 Jul 2024; Accepted: 02 Sep 2024.

    Copyright: © 2024 Wang, Wu, Chen, Xu, An, Ren and Xiong. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence:
    Guang-Long Wang, Huaiyin Institute of Technology, Huaiyin, China
    Ai-Sheng Xiong, Nanjing Agricultural University, Nanjing, 210095, Jiangsu Province, China

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