The Capsicum MYB31 regulates capsaicinoid biosynthesis in the pepper pericarp

The Capsicum MYB31 regulates capsaicinoid biosynthesis in the pepper pericarp

Copyright © 2022 Elsevier Masson SAS. All rights reserved.

Bibliographische Detailangaben
Veröffentlicht in:Plant physiology and biochemistry : PPB. - 1991. - 176(2022) vom: 01. Apr., Seite 21-30
1. Verfasser: Sun, Binmei (VerfasserIn)
Weitere Verfasser: Chen, Changming, Song, Jiali, Zheng, Peng, Wang, Juntao, Wei, Jianlang, Cai, Wen, Chen, Siping, Cai, Yutong, Yuan, Yuan, Zhang, Shuanglin, Liu, Shaoqun, Lei, Jianjun, Cheng, Guoju, Zhu, Zhangsheng
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2022
Zugriff auf das übergeordnete Werk:Plant physiology and biochemistry : PPB
Schlagworte:Journal Article Capsaicinoid biosynthesis genes Capsaicinoids Hot pepper Master regulator MYB31 Pericarp Capsaicin S07O44R1ZM
Beschreibung
Zusammenfassung:Copyright © 2022 Elsevier Masson SAS. All rights reserved.
Pepper (Capsicum) are consumed worldwide as vegetables and food additives due to their pungent taste. Capsaicinoids are the bioactive compounds that confer the desired pungency to pepper fruits. Capsaicinoid biosynthesis was thought to occur exclusively in fruit placenta. Recently, biosynthesis in the pericarp of extremely pungent varieties was discovered, however, the mechanism of capsaicinoid biosynthesis regulation in the pericarp remains largely unknown. Here, the capsaicinoid contents of placenta and pericarp were analyzed. The results indicated that the Capsicum chinense pericarp accumulated a vast amount of capsaicinoids. Expression of the master regulator MYB31 and capsaicinoid biosynthesis genes (CBGs) were significantly upregulated in the pericarp in C. chinense accessions compared to accessions in other tested species. Moreover, in fruit of extremely-pungent 'Trinidad Moruga Scorpion' (C. chinense) and low-pungent '59' inbred line (C. annuum), the capsaicinoid accumulation patterns in the pericarp were consistent with expression levels of CBGs and MYB31. Silencing MYB31 in 'Trinidad Moruga Scorpion' pericarp leads to a significantly decreased CBGs transcription level and capsaicinoids content. Taken together, our results provide insights into the molecular mechanism arising from the expression of MYB31 in the pericarp that results in exceedingly hot peppers
Beschreibung:Date Completed 08.03.2022
Date Revised 08.03.2022
published: Print-Electronic
Citation Status MEDLINE
ISSN:1873-2690
DOI:10.1016/j.plaphy.2022.02.014