Linked Life Data

18758783

Source:http://linkedlifedata.com/resource/pubmed/id/18758783

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
11
pubmed:dateCreated
2008-10-15
pubmed:abstractText
Prevention of transgene flow from genetically modified crops to food crops and wild relatives is of concern in agricultural biotechnology. We used genes derived from food crops to produce complete male sterility as a strategy for gene confinement as well as to reduce the food purity concerns of consumers. Anther-specific promoters (A3, A6, A9, MS2, and MS5) were isolated from Brassica oleracea and B. rapa and fused to the beta-glucuronidase (GUS) reporter gene and candidate genes for male sterility, including the cysteine proteases BoCysP1 and BoCP3, and negative regulatory components of phytohormonal responses involved in male development. These constructs were then introduced into Arabidopsis thaliana. GUS analyses revealed that A3, A6, and A9 had tapetum-specific promoter activity from the anther meiocyte stage. Male sterility was confirmed in tested constructs with protease or gibberellin insensitive (gai) genes. In particular, constructs with BoCysP1 driven by the A3 or A9 promoter most efficiently produced plants with complete male sterility. The tapetum and middle layer cells of anthers expressing BoCysP1 were swollen and excessively vacuolated when observed in transverse section. This suggests that the ectopic expression of cysteine protease in the meiocyte stage may inhibit programmed cell death. The gai gene also induced male sterility, although at a low frequency. This is the first report to show that plant cysteine proteases and gai from food crops are available as a novel tool for the development of genetically engineered male-sterile plants.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0721-7714
pubmed:author
pubmed:issnType
Print
pubmed:volume
27
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1741-54
pubmed:meshHeading
pubmed:year
2008
pubmed:articleTitle
Efficient production of genetically engineered, male-sterile Arabidopsis thaliana using anther-specific promoters and genes derived from Brassica oleracea and B. rapa.
pubmed:affiliation
Division of Plant Science, National Institute of Agrobiological Sciences, Ibaraki, Japan.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't