Histochemical Detection of Peroxidase and Laccase Activities in Populus Secondary Xylem. Alonso, M. P., Carrió-Seguí, À., & Tuominen, H. In Xylem: Methods and Protocols, of Methods in Molecular Biology, pages 139–148. Springer US, New York, NY, November, 2023.
Histochemical Detection of Peroxidase and Laccase Activities in Populus Secondary Xylem [link]Paper  doi  abstract   bibtex   
Peroxidases (PRXs) and laccases (LACs) are enzymes involved in catalyzing the oxidation of the lignin monomers to facilitate lignin polymerization. However, due to the large number of genes composing these two families of enzymes, many details regarding their specific localization are only partially understood. Here, we present a fast and easy histochemical method that makes use of the artificial substrate 3,3′,5,5′-tetramethylbenzidine (TMB) to visualize PRX and LAC activities in the hybrid aspen (Populus tremula x P. tremuloides) xylem tissue. In addition, we describe a protocol that allows the detection of the PRX substrate, H2O2, using the nonfluorescent dye 2′,7′-dichlorodihydrofluorescein diacetate (H2DCFDA) in woody tissues.
@incollection{alonso_histochemical_2023,
	address = {New York, NY},
	series = {Methods in {Molecular} {Biology}},
	title = {Histochemical {Detection} of {Peroxidase} and {Laccase} {Activities} in {Populus} {Secondary} {Xylem}},
	isbn = {978-1-07-163477-6},
	url = {https://doi.org/10.1007/978-1-0716-3477-6_11},
	abstract = {Peroxidases (PRXs) and laccases (LACs) are enzymes involved in catalyzing the oxidation of the lignin monomers to facilitate lignin polymerization. However, due to the large number of genes composing these two families of enzymes, many details regarding their specific localization are only partially understood. Here, we present a fast and easy histochemical method that makes use of the artificial substrate 3,3′,5,5′-tetramethylbenzidine (TMB) to visualize PRX and LAC activities in the hybrid aspen (Populus tremula x P. tremuloides) xylem tissue. In addition, we describe a protocol that allows the detection of the PRX substrate, H2O2, using the nonfluorescent dye 2′,7′-dichlorodihydrofluorescein diacetate (H2DCFDA) in woody tissues.},
	language = {en},
	urldate = {2023-11-06},
	booktitle = {Xylem: {Methods} and {Protocols}},
	publisher = {Springer US},
	author = {Alonso, Marta-Marina Pérez and Carrió-Seguí, Àngela and Tuominen, Hannele},
	editor = {Agusti, Javier},
	month = nov,
	year = {2023},
	doi = {10.1007/978-1-0716-3477-6_11},
	keywords = {Cell wall, H2DCFDA, H2O2, Laccase, Lignin, Peroxidase, Populus, TMB, Woody tissues, Xylem},
	pages = {139--148},
}

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