2013
DOI: 10.1093/jxb/ert221
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From Zinnia to Arabidopsis: approaching the involvement of peroxidases in lignification

Abstract: Zinnia elegans constitutes one of the most useful model systems for studying xylem differentiation, which simultaneously involves secondary cell wall synthesis, cell wall lignification, and programmed cell death. Likewise, the in vitro culture system of Z. elegans has been the best characterized as the differentiation of mesophyll cells into tracheary elements allows study of the biochemistry and physiology of xylogenesis free from the complexity that heterogeneous plant tissues impose. Moreover, Z. elegans ha… Show more

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Cited by 48 publications
(36 citation statements)
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“…In this experimental model the developmental program of xylem differentiation in planta is well preserved in vitro which allows reliable determination of the sequence of differentiation and cell death events, observations on the morphology of the cellular organelles, identification of signalling molecules, hormonal, molecular and gene regulatory components, examination of the architecture and chemical composition of SCWs, and investigations on intercellular communication (Hosokawa et al 2001; Pesquet et al 2003; Tokunaga et al 2005; Fukuda 2000; Novo-Uzal et al 2013). The culture is initiated from leaf mesophyll cells which can be easily separated from the other leaf tissues; it comprises a homogenous cell type and expresses high potential for synchronous transdifferentiation of the mesophyll cells yielding sufficient amounts of completed TEs.…”
Section: Introductionmentioning
confidence: 99%
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“…In this experimental model the developmental program of xylem differentiation in planta is well preserved in vitro which allows reliable determination of the sequence of differentiation and cell death events, observations on the morphology of the cellular organelles, identification of signalling molecules, hormonal, molecular and gene regulatory components, examination of the architecture and chemical composition of SCWs, and investigations on intercellular communication (Hosokawa et al 2001; Pesquet et al 2003; Tokunaga et al 2005; Fukuda 2000; Novo-Uzal et al 2013). The culture is initiated from leaf mesophyll cells which can be easily separated from the other leaf tissues; it comprises a homogenous cell type and expresses high potential for synchronous transdifferentiation of the mesophyll cells yielding sufficient amounts of completed TEs.…”
Section: Introductionmentioning
confidence: 99%
“…When the vacuole collapses, the cell is dead but the released lytic enzymes proceed to degrade the protoplast debris. Moreover, the post - mortem stage (we suggest to be determined as stage IV) is featured by an active process of SCWs lignification which is non-autonomous and is supported by substances delivered from neighbouring living cells both in zinnia in vitro and in planta , and in other cell cultures and in planta systems such as differentiating xylem in Arabidopsis roots and hypocotyls of Phaseolus vulgaris (Smith et al 1994; Hosokawa et al 2001; Fukuda 2004; Tokunaga et al 2005; Avci et al 2008; Bollhöner et al 2012, 2013; Novo-Uzal et al 2013; Pesquet et al 2010, 2013). …”
Section: Introductionmentioning
confidence: 99%
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“…Although there is some degree of variation among species in the architecture of the monolignol biosynthetic pathway, it is largely consistent across different plant groups (Mottiar et al, 2016). In Arabidopsis (Arabidopsis thaliana), both laccases and peroxidases are required for monolignol oxidation in lignin polymerization, possibly acting sequentially, and/or in different tissues (Berthet et al, 2011;Lee et al, 2013;Novo-Uzal et al, 2013;Zhao et al, 2013;Barros et al, 2015;Shigeto and Tsutsumi, 2016). In Norway spruce, numerous peroxidase and laccase isoenzymes have been reported in the cell walls of developing xylem and in the culture medium of the ligninforming cell culture utilized in this study (Kärkönen et al, 2002;Fagerstedt et al, 2010;Koutaniemi et al, 2015).…”
mentioning
confidence: 99%
“…From the similar point of view, AtPrx-2, 25, and 71 are classified to the all-round peroxidase. The structural motifs of S peroxidases, which are amino acid sequences conserved among S peroxidases but not in G peroxidases, were proposed by Ros Barceló et al (2007) [8] and Novo-Uzal et al (2013) [31]. AtPrx-2, 25, and 71 conserve, indeed, all or part of these motifs (Fig.…”
Section: Discussionmentioning
confidence: 73%