International Scholarly Research Notices

International Scholarly Research Notices / 2021 / Article

Expression of Concern | Open Access

Volume 2021 |Article ID 9842537 | https://doi.org/10.1155/2021/9842537

International Scholarly Research Notices, "Expression of Concern on “DNA Extraction Protocol for Plants with High Levels of Secondary Metabolites and Polysaccharides without Using Liquid Nitrogen and Phenol”", International Scholarly Research Notices, vol. 2021, Article ID 9842537, 1 page, 2021. https://doi.org/10.1155/2021/9842537

Expression of Concern on “DNA Extraction Protocol for Plants with High Levels of Secondary Metabolites and Polysaccharides without Using Liquid Nitrogen and Phenol”

Received07 Apr 2021
Accepted07 Apr 2021
Published24 May 2021

International Scholarly Research Notices would like to express concern with the article titled “DNA Extraction Protocol for Plants with High Levels of Secondary Metabolites and Polysaccharides without Using Liquid Nitrogen and Phenol” [1] due to potential figure issues.

As raised on PubPeer [2], several lanes in Figures 2 and 3 appear to be similar to each other. The authors provided the original images (Supplementary Materials) and said the banding similarity is due to using the same species (Avicennia marina) for RAPD analyses in Figure 2 and for RFLP analyses in Figure 3. While banding is expected to be similar when the same samples or species are used, the features in lanes 3 and 5 in Figure 2, lanes 8 and 9 in Figure 3, and lanes 10 and 11 in Figure 3 are unusually similar.

Supplementary Materials

Higher-resolution images of the gel electrophoresis reported in Figures 2, 3, and 4, as provided by the authors. (Supplementary Materials)

References

  1. S. Kumar Sahu, M. Thangaraj, and K. Kathiresan, “DNA Extraction Protocol for Plants with High Levels of Secondary Metabolites and Polysaccharides without Using Liquid Nitrogen and Phenol,” International Scholarly Research Notices, vol. 2012, Article ID 205049, 6 pages, 2012. View at: Publisher Site | Google Scholar
  2. M. B. Elisabeth, DNA Extraction Protocol for Plants with High Levels of Secondary Metabolites and Polysaccharides without using Liquid Nitrogen and Phenol, PubPeer, San Francisco, CA, USA, 2019.

Copyright © 2021 International Scholarly Research Notices. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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