Efficient floral dip transformation method using Agrobacterium tumefaciens on Cosmos sulphureus Cav.

Purwantoro, Aziz and Irsyadi, Muhammad Burhanuddin and Sawitri, Widhi Dyah and Fatumi, Nor Chamidah and Fajrina, Shania Nur (2023) Efficient floral dip transformation method using Agrobacterium tumefaciens on Cosmos sulphureus Cav. Saudi Journal of Biological Sciences, 30 (7): 103702. pp. 1-8. ISSN 1319-562X

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Abstract

Yellow cosmos (Cosmos sulphureus Cav.) is a specific flowering plant and considered a suitable genetic engineering model. Agrobacterium-mediated plant transformation is commonly used for plant genetic engineering. Floral dip transformation is one of the plant genetic transformation methods, and it involves dipping flower buds into an Agrobacterium suspension. Studies on floral dip transformation of yellow cosmos have never been reported. Therefore, an efficient method in plant genetic engineering must be established. This study developed an effective and efficient floral dip transformation method for yellow cosmos. In this study, flower buds with sizes of 5–7 mm were used. Several parameters have been observed to optimize the floral dip method. These parameters included the optical density (OD600) of Agrobacterium culture, concentration of surfactant, and duration of flower bud dipping into the Agrobacterium suspension. The results showed that the floral dip method was most efficient when the flower buds were dipped into Agrobacterium suspension with OD600 = 0.8 and containing 5 sucrose and 0.1 Silwet L-77 for 30 s. This method enhanced the transformation efficiency at a rate of 12.78 ± 1.53. The neomycin phosphotransferase II and green fluorescent protein genes with sizes of 550 and 736 bp, respectively, were confirmed by polymerase chain reaction. In addition, the transgenic plants were kanamycin resistant and fluorescent under ultraviolet light observation. This finding suggests that the proposed floral dip transformation provides new insights into efficient plant genetic engineering methods for yellow cosmos.

Item Type: Article
Additional Information: Cited by: 3; All Open Access, Gold Open Access, Green Open Access
Uncontrolled Keywords: Floral dip; OD; Surfactant; Transgenic; Silwet L-77; Yellow cosmos Surfactant Transgenic Silwet L-77 Yellow cosmos
Subjects: S Agriculture > S Agriculture (General)
Divisions: Faculty of Agriculture > Department of Agronomy
Depositing User: Laili Hidayah Hidayah
Date Deposited: 23 Aug 2024 02:47
Last Modified: 23 Aug 2024 02:47
URI: https://ir.lib.ugm.ac.id/id/eprint/2992

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