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Structure and Expression of a Tobacco Beta-1,3-glucanase Gene

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Journal Plant Mol Biol
Date 1990 Dec 1
PMID 2103484
Citations 45
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Abstract

We determined the primary structure of a tobacco beta-1,3-glucanase gene. The beta-1,3-glucanase gene has a single large intron, and the intron separates coding regions of the signal peptide and the mature enzyme. Analysis of the 5'-flanking region sequence revealed an 11 bp GC-rich element with perfect homology to the putative regulatory sequence of tobacco chitinase genes. RNA blot analysis showed that levels of mRNAs of beta-1,3-glucanase and chitinase are coordinately increased in response to ethylene and salicylic acid. Accumulation of beta-1,3-glucanase mRNA in suspension-cultured cells is rapidly induced at late logarithmic growth phase. Members of the tobacco beta-1,3-glucanase gene families are classified into two subfamilies. One of the subfamilies appeared to be transcriptionally inactive.

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