Journal
LWT-FOOD SCIENCE AND TECHNOLOGY
Volume 185, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.lwt.2023.115168
Keywords
Jasmonate; Aroma; Volatile compound; MdMYC2; Transcriptional regulation
Categories
Ask authors/readers for more resources
Abundant volatile compounds play a significant role in fruit aroma across various plant species. The plant hormone jasmonate (JA) regulates the biosynthesis of volatiles such as aldehydes and alcohols, with the transcription factor MdMYC2 being identified as a key regulator in this process. These findings provide valuable insights into the mechanisms by which JA influences volatile biosynthesis in fruit.
Abundant volatile compounds are predominant contributors to fruit aroma in various species. Plant hormones and transcription factors are pivotal for volatile compound production in fruit. Jasmonate (JA) regulates the biosynthesis of volatiles such as aldehydes and alcohols, but a possible mechanism by which JA-induced MdMYC2 regulates aldehyde and alcohol biosynthesis in apple fruit has not been described. To study the effects of JA on the critical volatiles of 'Ruixue' fruit, gas chromatography.mass spectrometry (GC.MS) was used to determine the content of volatiles in fruits treated with JA. Our results showed that JA treatment effectively improved fruit quality during storage of 'Ruixue' fruit; for instance, sweetness increased and aroma volatiles accumulated. Furthermore, we identified the transcription factor (TF) MdMYC2 (MD16G1274200), whose expression increased 1.5- to 2.0-fold in JA-treated fruits. Subsequently, MdMYC2 overexpression dramatically increased volatile biosynthesis in apple calli (1.6-fold) and tomato calli (2.1-fold). Furthermore, MdMYC2 upregulated MdLOX5a transcription (3-fold) by binding to its promoter according to dual-luciferase and yeast one-hybrid (Y1H) assays. Collectively, these findings provide beneficial information to illustrate the mechanisms by which JA regulates volatile biosynthesis in fruit.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available