Characterisation of the class III peroxidase gene family in carrot taproots and its role in anthocyanin and lignin accumulation

Copyright © 2021 The Authors. Published by Elsevier Masson SAS.. All rights reserved.

Bibliographische Detailangaben
Veröffentlicht in:Plant physiology and biochemistry : PPB. - 1991. - 167(2021) vom: 05. Okt., Seite 245-256
1. Verfasser: Meng, Geng (VerfasserIn)
Weitere Verfasser: Fan, Weiyao, Rasmussen, Søren K
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2021
Zugriff auf das übergeordnete Werk:Plant physiology and biochemistry : PPB
Schlagworte:Journal Article Anthocyanin Daucus carota L. Expression Lignification Pigmentation Plant class III peroxidase RNA sequencing Anthocyanins Plant Proteins mehr... Lignin 9005-53-2 Peroxidase EC 1.11.1.7
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245 1 0 |a Characterisation of the class III peroxidase gene family in carrot taproots and its role in anthocyanin and lignin accumulation 
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520 |a Copyright © 2021 The Authors. Published by Elsevier Masson SAS.. All rights reserved. 
520 |a Plant class III peroxidases (CIII Prxs) are involved in numerous essential plant life processes, such as plant development and differentiation, lignification and seed germination, and defence against pathogens. However, there is limited information about the structure-function relationships of Prxs in carrots. This study identified 75 carrot peroxidases (DcPrxs) and classified them into seven subgroups based on phylogenetic analysis. Gene structure analysis revealed that these DcPrxs had between one and eight introns, while conserved motif analysis showed a typical motif composition and arrangement for CIII Prx. In addition, eighteen tandem duplication events, but only eight segmental duplications, were identified among these DcPrxs, indicating that tandem duplication was the main contributor to the expansion of this gene family. Histochemical analyses showed that lignin was mainly localised in the cell walls of xylem, and Prx activity was determined in the epidermal region of taproots. The xylem always showed higher lignin concentration and lower Prx activity compared to the phloem in the taproots of both carrot cultivars. Combining these observations with RNA sequencing, some Prx genes were identified as candidate genes related to lignification and pigmentation. Three peroxidases (DcPrx30, DcPrx32, DcPrx62) were upregulated in the phloem of both genotypes. Carrot taproots are an attractive resource for natural food colourants and this study elucidated genome-wide insights of Prx for the first time, developing hypotheses concerning their involvement with lignin and anthocyanin in purple carrots. The findings provide an essential foundation for further studies of Prx genes in carrot, especially on pigmentation and lignification mechanisms 
650 4 |a Journal Article 
650 4 |a Anthocyanin 
650 4 |a Daucus carota L. 
650 4 |a Expression 
650 4 |a Lignification 
650 4 |a Pigmentation 
650 4 |a Plant class III peroxidase 
650 4 |a RNA sequencing 
650 7 |a Anthocyanins  |2 NLM 
650 7 |a Plant Proteins  |2 NLM 
650 7 |a Lignin  |2 NLM 
650 7 |a 9005-53-2  |2 NLM 
650 7 |a Peroxidase  |2 NLM 
650 7 |a EC 1.11.1.7  |2 NLM 
700 1 |a Fan, Weiyao  |e verfasserin  |4 aut 
700 1 |a Rasmussen, Søren K  |e verfasserin  |4 aut 
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773 1 8 |g volume:167  |g year:2021  |g day:05  |g month:10  |g pages:245-256 
856 4 0 |u http://dx.doi.org/10.1016/j.plaphy.2021.08.004  |3 Volltext 
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