Modified versions of the Cry3A gene of Bacillus thuringiensis (Bt) were transferred into Norway spruce (Picea abies). Both the biolistic approach and Agrobacterium tumefaciens mediated procedure were employed for transformation of embryogenic tissue (ET) cultures. The latter method proved to be more efficient yielding 70 transgenic embryogenic tissue lines compared with 18 lines obtained by bio...

The development of genetically transformed plants is an elusive landmark in Cannabis sativa L. breeding. Despite its economic interest, at present, protocols for producing transgenic C. are scarce. We studied the ability hypocotyl, cotyledon and meristem explants from six hemp varieties plant regeneration. For this, we firstly evaluated vitro regeneration rates hypocotyls cultured medium withou...

abstract background: selectable marker gene (smg) systems are critical for generation of transgenic crops. transgenic crop production background: selectable marker gene (smg) systems are critical for generation of transgenic crops. transgenic crop production without using smg is not economically feasible. however, smgs are non-essential once an intact transgenic plant has been established. elim...

For life to survive outside the biosphere, it must be protected from UV light and other radiation by exterior shielding or through sufficient inherent resistance to survive without protection. We tested the plausibility of inherent resistance in plant seeds, reporting in a previous paper that Arabidopsis thaliana and tobacco (Nicotiana tabacum) seeds exposed for 558 days outside the Internation...

We have used the ability of Ac to transpose in tobacco to determine which Ac sequences are required for transposition, using a phenotypic assay for Ac excision from an NPTII gene in which excisions of Ac result in calli resistant to the antibiotic kanamycin (Baker et al., 1987). Here we show that deletion of the Ac DNA which encodes the untranslated leader of the Ac transcript does not prevent ...

Genetic engineering is becoming a useful tool in the improvement of plants and plant-based raw materials. Varieties with value-added traits are developed for nonfood use in industrial and medical production, and different production lines must be kept separate. For good management practices, knowledge of relevant gene flow parameters is required. In the present study, pollen-mediated dispersal ...

In order to develop an easy, rapid and efficient protocol for the genetic transformation of tomato (Lycopersicon esculentum Mill.), without involving tissue culturing, ripened fruits of tomato were infiltrated with Agrobacterium harboring plasmid pROKII GUSint AP1. The plasmid contains Arabidopsis early flowering gene AP1, GUS reporter gene and NPTII as a selectable marker gene. Both transient ...