The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 21, 1993
Filed:
Oct. 30, 1991
Takafumi Kaneko, Nitta, JP;
Kazutoshi Ito, Nitta, JP;
Sapporo Breweries Limited, Tokyo, JP;
Abstract
A transformed plant of Gramineae is prepared by culturing an anther of Gramineae in a callus induction medium and, at a stage immediately before the microspore begins to cause division or during the initial division, transducing a genetic substance into the microspore cell through a pore formed by a laser pulse thereby to express genetic information of the genetic substance. According to the present invention, it is unnecessary to prepare protoplast and therefore, time and operations for transformation can be greatly reduced. Since haploid cells are transformed, the character transduced is conveyed without separating at a later generation. In addition, difficulties in experiments between species and strains are minimized so that it is easy to apply the present invention to practical species. According to the present invention, large pores can be formed as compared to the electroporation method so that DNA or substances having a large molecular weight can be introduced.