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Abstract

Biology

Agrobacterium tumefaciens-Mediated Genetic Transformation of Narrowleaf Plantain

Published: March 17th, 2023

DOI:

10.3791/64777

1Department of Agronomy, Center for Plant Biology, Purdue University, 2Department of Biology, Purdue University, 3Department of Horticulture, Faculty of Agricultural Sciences, University of the Punjab, 4Department of Botany and Plant Pathology, Center for Plant Biology, Purdue University

Abstract

Species in the genus Plantago have several unique traits that have led to them being adapted as model plants in various fields of study. However, the lack of a genetic manipulation system prevents in-depth investigation of gene function, limiting the versatility of this genus as a model. Here, a transformation protocol is presented for Plantago lanceolata, the most commonly studied Plantago species. Using Agrobacterium tumefaciens-mediated transformation, 3 week-old roots of aseptically grown P. lanceolata plants were infected with bacteria, incubated for 2-3 days, and then transferred to a shoot induction medium with appropriate antibiotic selection. Shoots typically emerged from the medium after 1 month, and roots developed 1-4 weeks after the shoots were transferred to the root induction medium. The plants were then acclimated to a soil environment and tested for the presence of a transgene using the β-glucuronidase (GUS) reporter assay. The transformation efficiency of the current method is ~20%, with two transgenic plants emerging per 10 root tissues transformed. Establishing a transformation protocol for narrowleaf plantain will facilitate the adoption of this plant as a new model species in various areas.

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Keywords Agrobacterium Tumefaciens

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