Abstract
Transcriptional responses to growth in high environmental calcium concentrations were characterized and compared between wild-type and mutant Arabidopsis plants containing a knockout mutation in the gene encoding a cyclic nucleotide-gated channel (CNGC2). We show that the transcriptional profile of cngc2 plants grown in normal media resembled that from wild-type plants grown under elevated exogenous calcium conditions. The mutant grown in high-calcium media exhibited transcriptional changes not seen in the wild-type. The pattern of transcription suggests that adaptation to high external calcium overlaps with responses towards various biotic and abiotic stresses.
Publication types
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Research Support, N.I.H., Extramural
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Research Support, Non-U.S. Gov't
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Research Support, U.S. Gov't, Non-P.H.S.
MeSH terms
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Adaptation, Physiological / genetics
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Arabidopsis / genetics*
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Arabidopsis / growth & development*
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Arabidopsis / metabolism
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Arabidopsis Proteins / genetics
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Arabidopsis Proteins / physiology
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Calcium / metabolism*
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Calcium Signaling / genetics*
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Cluster Analysis
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Cyclic Nucleotide-Gated Cation Channels / genetics
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Cyclic Nucleotide-Gated Cation Channels / physiology*
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Gene Expression Profiling*
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Gene Expression Regulation, Plant
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Mutation
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Oligonucleotide Array Sequence Analysis
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Transcription, Genetic
Substances
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Arabidopsis Proteins
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CNGC2 protein, Arabidopsis
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Cyclic Nucleotide-Gated Cation Channels
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Calcium