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An improved surface sterilization technique for introducing leaf, nodal and seed explants of Aquilaria malaccensis from field sources into tissue culture


Citation

Daud, Nurul Hazwani and Jayaraman, Shashita and Mohamed, Rozi (2012) An improved surface sterilization technique for introducing leaf, nodal and seed explants of Aquilaria malaccensis from field sources into tissue culture. Asia Pacific Journal of Molecular Biology and Biotechnology, 20 (2). pp. 55-58. ISSN 0128-7451

Abstract / Synopsis

A critical stage in the introduction of plants into tissue culture is to obtain cultures free from microbial contamination. This study investigated different sterilization regimes for leaf and nodal explants from Aquilaria malaccensis grown in the shade house under natural environmental conditions, and for seeds from wild mature trees. We found that pre-sterilization using 0.2% Benomyl for 15 minutes improved the number of ‘clean and alive’ individuals of all types of explants, especially when followed by surface sterilization using mercury chloride (HgCl2). Treatment with 0.1 % HgCl2 for 15 and 30 seconds yielded the best results for leaf and nodal explants, respectively. Maximum percentage of ‘clean and alive’ seeds was observed when using 0.2 % HgCl2 for 12 minutes. Treatment with Clorox® bleach (5.25% sodium hypochlorite as the active ingredient) even at high concentration (50% Clorox®) alone was not sufficient to control fungal and bacterial contamination in the explants. We conclude that HgCl2 coupled with Benomyl pre-treatment produced a highly efficient sterilization method producing 83 – 90% ‘clean’ leaf, nodal and seed explants of A. malaccensis from natural sources after fourteen days in culture.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Forestry
Publisher: Malaysian Society for Molecular Biology and Biotechnology
Keywords: Agarwood; Endangered tree; In vitro; Microbial contamination; Thymelaeaceae
Depositing User: Nabilah Mustapa
Date Deposited: 19 Jan 2018 16:06
Last Modified: 19 Jan 2018 16:06
URI: http://psasir.upm.edu.my/id/eprint/58501
Statistic Details: View Download Statistic

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