Transformation of sweet potato tissues with green-fluorescent protein gene

    Authors

    S. Winfield; R. Lawton; H. Daniell;S. K. Dhir

    Comments

    Authors: contact us about adding a copy of your work at STARS@ucf.edu

    Abbreviated Journal Title

    In Vitro Cell. Dev. Biol.-Plant

    Keywords

    sweet potato; Ipomoea batatas L. (Lam.); green-fluorescent protein; electroporation; particle bombardment; protoplasts; intact cells; stable; expression; PLANT-CELLS; MICROPROJECTILE BOMBARDMENT; AGROBACTERIUM-TUMEFACIENS; PARTICLE BOMBARDMENT; MAMMALIAN-CELLS; VITAL MARKER; IN-VIVO; EXPRESSION; PROTOPLASTS; REGENERATION; Plant Sciences; Cell Biology; Developmental Biology

    Abstract

    The expression of the green-fluorescent protein (GF?), gene from Aequorea victoria (jellyfish) was analyzed by transient and stable expression in, sweet potato Ipomoea batatas L. (Lam.) cv. Beauregard tissues by electroporation. and particle bombardment. Leaf and petiole segments from in vitro-raised young plantlets were used for protoplast isolation and electroporation. Embryogenic callus was also produced from leaf segments for particle bombardment experiments. A buffer solution containing, 1 x 106 protoplasts ml(-1) was mixed with plasmid DNA containing the GFP gene, and electroporated at 375 V cm(-1). Approximately 25-30% of electroporated mesophyll cell protoplasts subsequently cultured in KM8P medium regenerated cell walls after 48, h. Of these, 3% emitted bright green fluorescence when exposed to, UV-blue light at 395 nm. Transformed cells continued to, grow after embedding in KM8P medium solidified with 1.2% SeaPlaque agarose, Stable expression of GFP was observed after 4 wk of culture in approximately 1.0% of the initial GFP positive cells (27.5, GFP positive micro calluses out of 3024 cells which transiently expressed GFP 48 h after electroporation). In a separate experiment, 600-700 bright green spots were observed per plate 48 h after bombarding leaf segments or embryogenic: callus. In bombarded cultures, several stable GFP-expressing sectors were observed in leaf-derived embryogenic callus grown without selection for 4 wk. These results show that GFP gene expression can occur in various sweet potato, tissues, and that it may be a useful screenable marker to, improve transformation efficiency and obtain transgenic sweet potato plants.

    Journal Title

    In Vitro Cellular & Developmental Biology-Plant

    Volume

    37

    Issue/Number

    5

    Publication Date

    1-1-2001

    Document Type

    Article

    Language

    English

    First Page

    648

    Last Page

    653

    WOS Identifier

    WOS:000172369800025

    ISSN

    1054-5476

    Share

    COinS