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Cisgenesis: Engineering Plant Genome by Harnessing Compatible Gene Pools

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Genome Engineering for Crop Improvement

Part of the book series: Concepts and Strategies in Plant Sciences ((CSPS))

Abstract

The intermixing of hereditary material between crossable species occurs invariably in nature. Today, genome engineering tools integrated with plant breeding, allow precise intermixing of genetic traits for the improvement of crop species. However, this requires the identification of candidate gene(s) from genetic resources within or outside the gene pool. When the genes and regulatory elements are derived from compatible species, as is in nature, it is called cisgenesis. Development of cisgenic crops requires genome information of the target plant; identification, isolation, characterization, and cloning of the desired gene(s) from a cross-compatible donor and a vector system for the precise delivery into the recipient. Cisgenesis has been successfully used to enhance crop yield; resistance against important biotic and abiotic stresses and to enhance biomass of trees for biofuel production. Application of cisgenesis in a wide variety of crops requires novel strategies and detailed survey of their genetically compatible relatives. Additionally, mining of genes associated with target traits needs to be explored along with strong promoter systems for optimum expression of the target genes. In this chapter, we review the potential of cisgenesis, its applications, advantages, limitations, regulatory concerns, and strategies to maximize its applicability in the improvement of crops.

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Correspondence to Bidyut Kumar Sarmah .

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Sarmah, B.K., Gohain, M., Borah, B.K., Acharjee, S. (2021). Cisgenesis: Engineering Plant Genome by Harnessing Compatible Gene Pools. In: Sarmah, B.K., Borah, B.K. (eds) Genome Engineering for Crop Improvement. Concepts and Strategies in Plant Sciences. Springer, Cham. https://doi.org/10.1007/978-3-030-63372-1_8

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