Establishment of in Vitro Culture System for Transgenic Hairy Roots

Overview

Journal 3 Biotech

Publisher Springer

Specialty Biotechnology

Date 2020 Mar 12

PMID 32158633

Citations 9

Authors

Jing Yang

Xiaozeng Yang

Bin Li

Xiayang Lu

Jiefang Kang

Xiaoyan Cao

Affiliations

Soon will be listed here.

Abstract

The aim of the study was to establish a reliable system of transgenic hairy roots in through -mediated genetic transformation. For this, we optimized several steps in the process of strain C58C1 mediated hairy root induction, including the most appropriate medium, explant type, time for infection and co-cultivation. We achieved an induction rate of up to 100% when the roots of seedlings were used as explants, infected with C58C1 harboring pCAMBIA1305 for 5 min, followed by induction on 1/2MS supplemented with 0.2 mg/L naphthylacetic acid and 200 mg/L cefotaxime sodium. The co-transformed hairy roots were confirmed by PCR amplification of hygromycin phosphotransferase II gene and histochemical GUS assay, and the efficiency of transformation was 70% and 68.3%, respectively, when no hygromycin selection pressure was exerted. To increase biomass production, we excised and self-propagated the transformed hairy roots, which produce saponins. Our successful establishment of an in vitro culture system of transgenic hairy root for this species lays the foundation not only for assessing gene expression and function but also for obtaining high levels of secondary metabolites through genetic engineering technology.

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