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:
Jul. 06, 1999
Filed:
Feb. 06, 1996
Laurian Robert, Gatineau, CA;
Hai Ping Hong, Saskatoon, CA;
Abstract
A Brassica sp. genomic clone containing a gene promoter, which directs expression in the tapetum, was isolated. When the promoter was fused with the GUS gene and introduced into B. napus by Agrobacterium mediated transformation, this promoter controlled GUS expression in the tapetum in transgenic B. napus plants. Expression was observed from bud length 2-3 mm, which corresponds to the uninucleate microspore stage, peaked at 4-5 mm which corresponds to the binucleate microspore stage and declined to no detectable level at the open flower stage. There was no GUS expression in other tissues such as root, stem, leaf, sepal, petal or pistil. This promoter will be useful for the temporal and spatial control of gene expression in plants.