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Hospet R, Thangadurai D, Cruz-Martins N, Sangeetha J, Anu Appaiah KA, Chowdhury ZZ, Bedi N, Soytong K, Al Tawahaj ARM, Jabeen S, Tallur MM. Genome shuffling for phenotypic improvement of industrial strains through recursive protoplast fusion technology. Crit Rev Food Sci Nutr 2021:1-10. [PMID: 34592865 DOI: 10.1080/10408398.2021.1983763] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Strains' improvement technology plays an essential role in enhancing the quality of industrial strains. Several traditional methods and modern techniques have been used to further improve strain engineering programs. The advances stated in strain engineering and the increasing demand for microbial metabolites leads to the invention of the genome shuffling technique, which ensures a specific phenotype improvement through inducing mutation and recursive protoplast fusion. In such technique, the selection of multi-parental strains with distinct phenotypic traits is crucial. In addition, as this evolutionary strain improvement technique involves combinative approaches, it does not require any gene sequence data for genome alteration and, therefore, strains developed by this elite technique will not be considered as genetically modified organisms. In this review, the different stages involved in the genome shuffling technique and its wide applications in various phenotype improvements will be addressed. Taken together, data discussed here highlight that the use of genome shuffling for strain improvement will be a plus for solving complex phenotypic traits and in promoting the rapid development of other industrially important strains.
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Affiliation(s)
| | | | - Natália Cruz-Martins
- Faculty of Medicine, University of Porto, Porto, Portugal.,Institute for Research and Innovation in Health (i3S), University of Porto, Porto, Portugal.,Institute of Research and Advanced Training in Health Sciences and Technologies (CESPU), Gandra PRD, Portugal
| | - Jeyabalan Sangeetha
- Department of Environmental Science, Central University of Kerala, Kasaragod, Kerala, India
| | - Konerira Aiyappa Anu Appaiah
- Department of Microbiology and Fermentation Technology, Central Food Technological Research Institute (CSIR), Mysore, Karnataka, India
| | - Zaira Zaman Chowdhury
- Nanotechnology and Catalysis Research Center (NANOCAT), Institute of Advanced Studies (IAS), University of Malaya, Kuala Lumpur, Malaysia
| | - Namita Bedi
- Amity Institute of Biotechnology, Amity University, Noida, Uttar Pradesh, India
| | - Kasem Soytong
- Department of Plant Production Technology, King Mongkut's Institute of Technology Ladkrabang (KMITL), Ladkrabang, Bangkok, Thailand
| | | | - Shoukat Jabeen
- Department of Botany, Karnatak University, Dharwad, Karnataka, India
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Generation of high-yield rapamycin-producing strains through protoplasts-related techniques. Appl Microbiol Biotechnol 2009; 83:507-12. [DOI: 10.1007/s00253-009-1918-7] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2009] [Revised: 02/13/2009] [Accepted: 02/13/2009] [Indexed: 10/21/2022]
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Vertès AA, Inui M, Yukawa H. Manipulating corynebacteria, from individual genes to chromosomes. Appl Environ Microbiol 2006; 71:7633-42. [PMID: 16332735 PMCID: PMC1317429 DOI: 10.1128/aem.71.12.7633-7642.2005] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Alain A Vertès
- Research Institute of Innovative Technology for the Earth, 9-2 Kizugawadai, Kizu, Soraku, Kyoto 619-0292, Japan
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Abstract
Plasmid vectors for the acetic acid-producing strains of Acetobacter and Gluconobacter were constructed from their cryptic plasmids and the efficient transformation conditions were established. The systems allowed to reveal the genetic background of the strains used in the acetic acid fermentation. Genes encoding indispensable components in the acetic acid fermentation, such as alcohol dehydrogenase, aldehyde dehydrogenase and terminal oxidase, were cloned and characterized. Spontaneous mutations at high frequencies in the acetic acid bacteria to cause the deficiency in ethanol oxidation were analyzed. A new insertion sequence element, IS1380, was identified as a major factor of the genetic instability, which causes insertional inactivation of the gene encoding cytochrome c, an essential component of the functional alcohol dehydrogenase complex. Several genes including the citrate synthase gene of A. aceti were identified to confer acetic acid resistance, and the histidinolphosphate aminotransferase gene was cloned as a multicopy suppressor of an ethanol sensitive mutant. Improvement of the acetic acid productivity of an A. aceti strain was achieved through amplification of the aldehyde dehydrogenase gene with a multicopy vector. In addition, spheroplast fusion of the Acetobacter strains was developed and applied to improve their properties.
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Affiliation(s)
- T Beppu
- Department of Agricultural Chemistry, Faculty of Agriculture, University of Tokyo, Japan
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