The effect of soil sample size, for practical DNA extraction, on soil microbial diversity in different taxonomic ranks

To determine the optimal soil sample size for microbial community structure analysis, DNA extraction, microbial composition analysis, and diversity assessments were performed using soil sample sizes of 0.2, 1, and 5 g. This study focused on the relationship between soil amount and DNA extraction con...

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Autores principales: Hiroki Morita, Satoshi Akao
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Publicado: Public Library of Science (PLoS) 2021
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Acceso en línea:https://doaj.org/article/99c2c07228074468ad2a6e38c46ffb78
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spelling oai:doaj.org-article:99c2c07228074468ad2a6e38c46ffb782021-11-25T06:19:40ZThe effect of soil sample size, for practical DNA extraction, on soil microbial diversity in different taxonomic ranks1932-6203https://doaj.org/article/99c2c07228074468ad2a6e38c46ffb782021-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC8601499/?tool=EBIhttps://doaj.org/toc/1932-6203To determine the optimal soil sample size for microbial community structure analysis, DNA extraction, microbial composition analysis, and diversity assessments were performed using soil sample sizes of 0.2, 1, and 5 g. This study focused on the relationship between soil amount and DNA extraction container volume and the alteration in microbial composition at different taxonomic ranks (order, class, and phylum). Horizontal (0.2 and 1 g) and vertical (5 g) shaking were applied during DNA extraction for practical use in a small laboratory. In the case of the 5 g soil sample, DNA extraction efficiency and the value of α-diversity index fluctuated severely, possibly because of vertical shaking. Regarding the 0.2 and 1 g soil samples, the number of taxa, Shannon–Wiener index, and Bray–Curtis dissimilarity were stable and had approximately the same values at each taxonomic rank. However, non-metric multidimensional scaling showed that the microbial compositions of these two sample sizes were different. The higher relative abundance of taxa in the case of the 0.2 g soil sample might indicate that cell wall compositions differentiated the microbial community structures in these two sample sizes due to high shear stress tolerance. The soil sample size and tube volume affected the estimated microbial community structure. A soil sample size of 0.2 g would be preferable to the other sample sizes because of the possible higher shearing force for DNA extraction and lower experimental costs due to smaller amounts of consumables. When the taxonomic rank was changed from order to phylum, some minor taxa identified at the order rank were integrated into major taxa at the phylum rank. The integration affected the value of the β-diversity index; therefore, the microbial community structure analysis, reproducibility of structures, diversity assessment, and detection of minor taxa would be influenced by the taxonomic rank applied.Hiroki MoritaSatoshi AkaoPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 11 (2021)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Hiroki Morita
Satoshi Akao
The effect of soil sample size, for practical DNA extraction, on soil microbial diversity in different taxonomic ranks
description To determine the optimal soil sample size for microbial community structure analysis, DNA extraction, microbial composition analysis, and diversity assessments were performed using soil sample sizes of 0.2, 1, and 5 g. This study focused on the relationship between soil amount and DNA extraction container volume and the alteration in microbial composition at different taxonomic ranks (order, class, and phylum). Horizontal (0.2 and 1 g) and vertical (5 g) shaking were applied during DNA extraction for practical use in a small laboratory. In the case of the 5 g soil sample, DNA extraction efficiency and the value of α-diversity index fluctuated severely, possibly because of vertical shaking. Regarding the 0.2 and 1 g soil samples, the number of taxa, Shannon–Wiener index, and Bray–Curtis dissimilarity were stable and had approximately the same values at each taxonomic rank. However, non-metric multidimensional scaling showed that the microbial compositions of these two sample sizes were different. The higher relative abundance of taxa in the case of the 0.2 g soil sample might indicate that cell wall compositions differentiated the microbial community structures in these two sample sizes due to high shear stress tolerance. The soil sample size and tube volume affected the estimated microbial community structure. A soil sample size of 0.2 g would be preferable to the other sample sizes because of the possible higher shearing force for DNA extraction and lower experimental costs due to smaller amounts of consumables. When the taxonomic rank was changed from order to phylum, some minor taxa identified at the order rank were integrated into major taxa at the phylum rank. The integration affected the value of the β-diversity index; therefore, the microbial community structure analysis, reproducibility of structures, diversity assessment, and detection of minor taxa would be influenced by the taxonomic rank applied.
format article
author Hiroki Morita
Satoshi Akao
author_facet Hiroki Morita
Satoshi Akao
author_sort Hiroki Morita
title The effect of soil sample size, for practical DNA extraction, on soil microbial diversity in different taxonomic ranks
title_short The effect of soil sample size, for practical DNA extraction, on soil microbial diversity in different taxonomic ranks
title_full The effect of soil sample size, for practical DNA extraction, on soil microbial diversity in different taxonomic ranks
title_fullStr The effect of soil sample size, for practical DNA extraction, on soil microbial diversity in different taxonomic ranks
title_full_unstemmed The effect of soil sample size, for practical DNA extraction, on soil microbial diversity in different taxonomic ranks
title_sort effect of soil sample size, for practical dna extraction, on soil microbial diversity in different taxonomic ranks
publisher Public Library of Science (PLoS)
publishDate 2021
url https://doaj.org/article/99c2c07228074468ad2a6e38c46ffb78
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AT hirokimorita effectofsoilsamplesizeforpracticaldnaextractiononsoilmicrobialdiversityindifferenttaxonomicranks
AT satoshiakao effectofsoilsamplesizeforpracticaldnaextractiononsoilmicrobialdiversityindifferenttaxonomicranks
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