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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
7
pubmed:dateCreated
2001-6-29
pubmed:abstractText
Lignin is a complex phenolic plant polymer that is essential for mechanical support, defense, and water transport in higher plants. The AC-rich motif, Pal-box is an important cis-acting element for gene expression in phenylpropanoid biosynthesis. We isolated a cDNA clone (Ntlim1) encoding a Pal-box binding protein by Southwestern screening. The deduced amino acid sequence of Ntlim1 is highly similar to members of the LIM protein family that contain a zinc finger motif. Moreover, Ntlim1 had a specific DNA-binding ability and transiently activated transcription of a beta-glucuronidase reporter gene driven by the Pal-box sequence. The results of transient expression assays with tobacco cultured cells showed that fusion proteins between GFP and Ntlim1 can enter nuclei. Transgenic tobacco plants with antisense Ntlim1 showed low levels of transcripts from some key phenylpropanoid pathway genes such as phenylalanine ammonia-lyase, hydroxycinnamate CoA ligase and cinnamyl alcohol dehydrogenase. Furthermore, a greater than 20% reduction in lignin content was observed in transgenic tobacco with antisense Ntlim1.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
0031-9422
pubmed:author
pubmed:issnType
Print
pubmed:volume
57
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1149-57
pubmed:dateRevised
2011-11-17
pubmed:meshHeading
pubmed:year
2001
pubmed:articleTitle
Transcriptional control of lignin biosynthesis by tobacco LIM protein.
pubmed:affiliation
Nippon Paper Industries Co., Ltd, Pulp and Paper Research Laboratory, 5-21-1, Oji, Kita-ku, Tokyo 114-0002, Japan. akiyoshi.kawaoka@nifty.ne.jp
pubmed:publicationType
Journal Article