The Arabidopsis thaliana genome has multiple divergent forms of phosphoinositol-specific phospholipase C1

Gene
L M HartweckE S Dennis

Abstract

Highly degenerate primers to conserved regions of the eukaryotic phosphoinositol-specific phospholipase C (PLC) were used to amplify fragments of plant PLCs from Arabidopsis thaliana genomic DNA. Eight completely different fragment sequences that showed high homology to PLCs of both animals and plants were isolated. The variation between these putative PLCs was high and suggests that, like animals, plants have multiple isoforms of PLC. Using one of the PCR clones, we isolated a corresponding full-length Arabidopsis PLC gene (ATHATPLC1G), and sequence analysis indicated that it was most like a delta-type PLC. This gene is 2.5 kb and contains seven introns, all but one of which has intron/exon border sequences that conform to the Arabidopsis consensus. The structural complexity of the gene is relatively simple compared to mammalian beta-type PLCs that can be 15 kb long with up to 30 introns. The plant gene is a single copy and was mapped to four Arabidopsis YACs, one located on chromosome 2. The promoter region contained two TATA-like elements at -43 and -185 and other putative regulatory elements that suggest that this PLC is hormonally regulated. This is the first plant PLC gene and the first delta type-PLC gene from a higher o...Continue Reading

References

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Citations

May 5, 2000·Molecular Plant-microbe Interactions : MPMI·T Shigaki, M K Bhattacharyya
May 5, 2001·Annual Review of Plant Physiology and Plant Molecular Biology·Xuemin Wang
Sep 25, 2003·Annual Review of Plant Biology·Harold J G Meijer, Teun Munnik
Jun 7, 2008·Plant Physiology and Biochemistry : PPB·I Made TasmaMadan K Bhattacharyya
Mar 12, 2005·The New Phytologist·John H F Bothwell, Carl K-Y Ng
Dec 8, 2004·Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology·Moo Sang KimHyung Ho Lee
Apr 17, 1999·The Plant Journal : for Cell and Molecular Biology·G ThorlbyG Warren
Oct 4, 2000·Physiological Reviews·M J Rebecchi, S N Pentyala

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