{"title":"Disruption of <i>CYP88B1</i> by transcription activator-like effector nuclease in potato and potential use to produce useful saponins.","authors":"Shuhei Yasumoto, Hyoung Jae Lee, Ryota Akiyama, Satoru Sawai, Masaharu Mizutani, Naoyuki Umemoto, Kazuki Saito, Toshiya Muranaka","doi":"10.5511/plantbiotechnology.24.0614a","DOIUrl":null,"url":null,"abstract":"<p><p>Potatoes produce steroidal glycoalkaloids (SGAs), toxic secondary metabolites associated with food poisoning. SGAs are synthesized by multiple biosynthetic enzymes. Knockdown of the <i>CYP88B1</i> gene, also known as <i>PGA3</i> or <i>GAME4</i>, is predicted to reduce toxic SGAs and accumulate steroidal saponins. These saponins not only serve as a source of steroidal drugs but are also anticipated to confer disease resistance to potatoes. In this study, we employed transcription activator-like effector nucleases (TALENs) for genome editing to disrupt <i>CYP88B1</i>. We introduced the TALEN expression vector via <i>Agrobacterium</i>-mediated transformation into seven potato lines. In six of these lines, disruption of the <i>CYP88B1</i> gene was confirmed. Liquid chromatography-mass spectrometry analysis revealed that SGAs were reduced to undetectable levels, corroborating the accumulation of steroidal saponins observed in previous knockdown studies. Our findings demonstrate the feasibility of generating low-toxicity potato lines through <i>CYP88B1</i> gene disruption using genome editing techniques.</p>","PeriodicalId":20411,"journal":{"name":"Plant Biotechnology","volume":"41 3","pages":"289-293"},"PeriodicalIF":1.4000,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11921144/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Plant Biotechnology","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.5511/plantbiotechnology.24.0614a","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"BIOTECHNOLOGY & APPLIED MICROBIOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
Potatoes produce steroidal glycoalkaloids (SGAs), toxic secondary metabolites associated with food poisoning. SGAs are synthesized by multiple biosynthetic enzymes. Knockdown of the CYP88B1 gene, also known as PGA3 or GAME4, is predicted to reduce toxic SGAs and accumulate steroidal saponins. These saponins not only serve as a source of steroidal drugs but are also anticipated to confer disease resistance to potatoes. In this study, we employed transcription activator-like effector nucleases (TALENs) for genome editing to disrupt CYP88B1. We introduced the TALEN expression vector via Agrobacterium-mediated transformation into seven potato lines. In six of these lines, disruption of the CYP88B1 gene was confirmed. Liquid chromatography-mass spectrometry analysis revealed that SGAs were reduced to undetectable levels, corroborating the accumulation of steroidal saponins observed in previous knockdown studies. Our findings demonstrate the feasibility of generating low-toxicity potato lines through CYP88B1 gene disruption using genome editing techniques.
期刊介绍:
Plant Biotechnology is an international, open-access, and online journal, published every three months by the Japanese Society for Plant Biotechnology. The journal, first published in 1984 as the predecessor journal, “Plant Tissue Culture Letters” and became its present form in 1997 when the society name was renamed to Japanese Society for Plant Cell and Molecular Biology, publishes findings in the areas from basic- to application research of plant biotechnology. The aim of Plant Biotechnology is to publish original and high-impact papers, in the most rapid turnaround time for reviewing, on the plant biotechnology including tissue culture, production of specialized metabolites, transgenic technology, and genome editing technology, and also on the related research fields including molecular biology, cell biology, genetics, plant breeding, plant physiology and biochemistry, metabolic engineering, synthetic biology, and bioinformatics.