Evidence map›Paper›PMID 41912740›Full record

ArticleWorld journal of microbiology & biotechnology2026

A potassium titanate whisker-assisted method for genetic transformation of Phanerochaete chrysosporium using a Cas9-sGFP expression vector.

Falguni Aggarwal, Simran Jatwani, Rishabh Rajkumar Jadhav, Rachana Yadav, Saurabh Jyoti Sarma, Deepa Khare

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Article in World journal of microbiology & biotechnology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

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6 authors.

Falguni AggarwalDepartment of Biotechnology, School of Engineering and Applied Sciences, Bennett University, Plot Nos. 8-11, Tech Zone II, Greater Noida, Uttar Pradesh, India.
Simran JatwaniDepartment of Biotechnology, School of Engineering and Applied Sciences, Bennett University, Plot Nos. 8-11, Tech Zone II, Greater Noida, Uttar Pradesh, India.
Rishabh Rajkumar JadhavDepartment of Biotechnology, School of Engineering and Applied Sciences, Bennett University, Plot Nos. 8-11, Tech Zone II, Greater Noida, Uttar Pradesh, India.
Rachana YadavDepartment of Biotechnology, School of Engineering and Applied Sciences, Bennett University, Plot Nos. 8-11, Tech Zone II, Greater Noida, Uttar Pradesh, India.
Saurabh Jyoti SarmaDepartment of Biotechnology, School of Engineering and Applied Sciences, Bennett University, Plot Nos. 8-11, Tech Zone II, Greater Noida, Uttar Pradesh, India.
Deepa KhareDepartment of Biotechnology, School of Engineering and Applied Sciences, Bennett University, Plot Nos. 8-11, Tech Zone II, Greater Noida, Uttar Pradesh, India. deepa.khare@bennett.edu.in.

Funding

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6 · The paper itself

Abstract

Phanerochaete chrysosporium, a model white-rot fungus, plays a central role in lignin degradation but has remained recalcitrant to genetic manipulation due to inherently low transformation efficiencies. In this study, we present a novel whisker-assisted transformation method employing potassium titanate whiskers combined with freeze–thaw pretreatment, L-ornithine supplementation, and sonication to enable efficient DNA delivery into P. chrysosporium. Using the Cas9-sGFP construct as a reporter system, transformants were selected on hygromycin and validated through PCR and fluorescence microscopy. Our protocol consistently generated hygromycin-resistant transformants, achieving a reproducible transformation efficiency of ~ 0.26%, outperforming Agrobacterium-mediated transformation and comparable to shockwave-based approaches. The successful integration and functional expression of the sGFP reporter confirmed the stability and reliability of this approach. This study provides the first evidence of whisker-mediated delivery and stable integration of exogenous DNA into the genomic DNA of a white-rot fungus. By providing a simple, cost-effective, and reproducible transformation strategy, this work addresses a longstanding bottleneck in fungal biotechnology. The method provides a scalable alternative for CRISPR-based genome engineering in ligninolytic fungi and unlocks opportunities for metabolic engineering of P. chrysosporium, including targeted gene disruption, overexpression of ligninolytic enzymes, and expression of heterologous biosynthetic pathways for the sustainable production of industrially valuable compounds.

Indexed as

CRISPR-Associated Protein 9PhanerochaeteTitaniumTransformation, GeneticCRISPR-Cas SystemsGenes, ReporterGenetic VectorsGreen Fluorescent ProteinsHygromycin BCRISPR-Associated Protein 9Green Fluorescent ProteinsHygromycin BTitaniumCRISPR-Cas9Fungal transformationPhanerochaete chrysosporiumPotassium titanate whiskersWhite rot fungi

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.