Phenotypic, Metabolic, and Genetic Diversity of the Indonesian Isolates of Rhizopus oligosporus

Authors

  • CAHYA PRIHATNA
  • ANTONIUS SUWANTO

DOI:

https://doi.org/10.5454/mi.1.1.7

Keywords:

tempeh, Rhizopus oligosporus, genetic diversity

Abstract

Fifteen Rhizopus oligosporus isolates were isolated from a number of tempeh samples obtained from Mataram, Jember, and Bogor, Indonesia; and subjected for characterization based on phenotypic, metabolic, and genetic fingerprinting through internal transcribed spacer (ITS) regions and amplified fragment length polymorphism (AFLP). Based on the growth on solid medium, they can be divided into three groups. Firstly, isolates that produced thick mycelia, dumpy sporangiophore, and scarce spores in agar culture, the second group is isolates that produced thin mycelia, stretched sporangiophore, with abundant spores in agar culture. The third group that only comprises one isolate, FB-06, is morphologically intermediate of the first and the second groups. These characters correlated with their range of temperature tolerance. The first group is less tolerant to high temperature (45 oC) compared with the second group, and the third group is the most tolerant to temperature up to 45 oC. Metabolic fingerprinting showed a very high polymorphism. In general, the result may explain a correlation in which isolates obtained from the same locations shared similar patterns. There is no correlation found between metabolic fingerprints and their phenotypic fingerprints. Rhizopus oligosporus readily dominated the niche and utilized nearly all carbon sources given demonstrate the versatile nature of this fungus. ITS regions identification revealed single nucleotide polymorphisms in four representative isolates examined, whereas AFLP fingerprinting determined each of representative isolates as individually unique. Furthermore, this AFLP profile seemed to agree with their phenotypic characters..

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How to Cite

PRIHATNA, C., & SUWANTO, A. (2010). Phenotypic, Metabolic, and Genetic Diversity of the Indonesian Isolates of Rhizopus oligosporus. Microbiology Indonesia, 1(1), 7. https://doi.org/10.5454/mi.1.1.7

Issue

Section

Articles
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Dispatcher.dispatch(Object:Request) % line  281, file: PKPApplication.inc.php
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Dispatcher.dispatch(Object:Request) % line  281, file: PKPApplication.inc.php
PKPApplication.execute() % line   68, file: index.php
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Dispatcher.dispatch(Object:Request) % line  281, file: PKPApplication.inc.php
PKPApplication.execute() % line   68, file: index.php
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Dispatcher.dispatch(Object:Request) % line  281, file: PKPApplication.inc.php
PKPApplication.execute() % line   68, file: index.php
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                        Smarty_Template_Compiled.render(Object:Smarty_Internal_Template) % line  216, file: smarty_internal_template.php
                     Smarty_Internal_Template.render(false, 1) % line  232, file: smarty_internal_templatebase.php
                  Smarty_Internal_TemplateBase._execute(Object:Smarty_Internal_Template, null, 42362804174f266c598cdb32c3208fc745b92101, null, 1) % line  134, file: smarty_internal_templatebase.php
               Smarty_Internal_TemplateBase.display(frontend/pages/article.tpl, null, 42362804174f266c598cdb32c3208fc745b92101, null) % line  924, file: PKPTemplateManager.inc.php
            PKPTemplateManager.display(frontend/pages/article.tpl) % line  287, file: ArticleHandler.inc.php
         ArticleHandler.view(Array[1], Object:Request) % line  391, file: PKPRouter.inc.php
      PKPRouter._authorizeInitializeAndCallRequest(Array[2], Object:Request, Array[1], false) % line  231, file: PKPPageRouter.inc.php
   PKPPageRouter.route(Object:Request) % line  143, file: Dispatcher.inc.php
Dispatcher.dispatch(Object:Request) % line  281, file: PKPApplication.inc.php
PKPApplication.execute() % line   68, file: index.php

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