A Staining Protocol for Identifying Secondary Compounds in Myrtaceae

Premise of the study: Here we propose a staining protocol using toluidine blue (TBO) and ruthenium red to reliably identify secondary compounds in the leaves of some species of Myrtaceae. Methods and Results: Leaves of 10 species representing 10 different genera of Myrtaceae were processed and stai...

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Main Authors: Hernan A. Retamales, Tanya Scharaschkin
Format: Article
Language:English
Published: Wiley 2014-10-01
Series:Applications in Plant Sciences
Subjects:
Online Access:http://www.bioone.org/doi/full/10.3732/apps.1400063
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author Hernan A. Retamales
Tanya Scharaschkin
author_facet Hernan A. Retamales
Tanya Scharaschkin
author_sort Hernan A. Retamales
collection DOAJ
description Premise of the study: Here we propose a staining protocol using toluidine blue (TBO) and ruthenium red to reliably identify secondary compounds in the leaves of some species of Myrtaceae. Methods and Results: Leaves of 10 species representing 10 different genera of Myrtaceae were processed and stained using five different combinations of ruthenium red and TBO. Optimal staining conditions were determined as 1 min of ruthenium red (0.05% aqueous) and 45 s of TBO (0.1% aqueous). Secondary compounds clearly identified under this treatment include mucilage in the mesophyll, polyphenols in the cuticle, lignin in fibers and xylem, tannins and carboxylated polysaccharides in the epidermis, and pectic substances in the primary cell walls. Conclusions: Potential applications of this protocol include systematic, phytochemical, and ecological investigations in Myrtaceae. It might be applicable to other plant families rich in secondary compounds and could be used as a preliminary screening method for extraction of these elements.
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spelling doaj.art-3131e8f1d147444f80ea8664020ae0f22022-12-21T19:38:08ZengWileyApplications in Plant Sciences2168-04502014-10-01210140006310.3732/apps.1400063A Staining Protocol for Identifying Secondary Compounds in MyrtaceaeHernan A. Retamales0Tanya Scharaschkin1School of Earth, Environmental, and Biological Sciences, Queensland University of Technology, 2 George Street, Brisbane, Queensland 4001 AustraliaSchool of Earth, Environmental, and Biological Sciences, Queensland University of Technology, 2 George Street, Brisbane, Queensland 4001 AustraliaPremise of the study: Here we propose a staining protocol using toluidine blue (TBO) and ruthenium red to reliably identify secondary compounds in the leaves of some species of Myrtaceae. Methods and Results: Leaves of 10 species representing 10 different genera of Myrtaceae were processed and stained using five different combinations of ruthenium red and TBO. Optimal staining conditions were determined as 1 min of ruthenium red (0.05% aqueous) and 45 s of TBO (0.1% aqueous). Secondary compounds clearly identified under this treatment include mucilage in the mesophyll, polyphenols in the cuticle, lignin in fibers and xylem, tannins and carboxylated polysaccharides in the epidermis, and pectic substances in the primary cell walls. Conclusions: Potential applications of this protocol include systematic, phytochemical, and ecological investigations in Myrtaceae. It might be applicable to other plant families rich in secondary compounds and could be used as a preliminary screening method for extraction of these elements.http://www.bioone.org/doi/full/10.3732/apps.1400063anatomyMyrtaceaeruthenium redstainingtoluidine blue
spellingShingle Hernan A. Retamales
Tanya Scharaschkin
A Staining Protocol for Identifying Secondary Compounds in Myrtaceae
Applications in Plant Sciences
anatomy
Myrtaceae
ruthenium red
staining
toluidine blue
title A Staining Protocol for Identifying Secondary Compounds in Myrtaceae
title_full A Staining Protocol for Identifying Secondary Compounds in Myrtaceae
title_fullStr A Staining Protocol for Identifying Secondary Compounds in Myrtaceae
title_full_unstemmed A Staining Protocol for Identifying Secondary Compounds in Myrtaceae
title_short A Staining Protocol for Identifying Secondary Compounds in Myrtaceae
title_sort staining protocol for identifying secondary compounds in myrtaceae
topic anatomy
Myrtaceae
ruthenium red
staining
toluidine blue
url http://www.bioone.org/doi/full/10.3732/apps.1400063
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