title: The unusual Arabidopsis extensin gene atExt1 is expressed throughout plant development and is induced by a variety of biotic and abiotic stresses.
abstract: We detail the expression of the Arabidopsis thaliana (L.) Heynh. atExt1 extensin gene. atExt1 is normally expressed in roots and inflorescences, and is induced by wounding, exogenously supplied salicylic acid, methyl jasmonate, auxins and brassinosteroids. Northern assays and histochemical analysis of transgenics expressing an atExt1:: gus fusion show that this gene is also induced by the brassica pathogen Xanthomonas campestris pv. campestris and that this induction is restricted to tissues close to the site of infection. Expression at regions of abscission and senescence also implicates atExt1 in these important developmental processes.
authors.affiliation: School of Biological Sciences, University of Wales, Bangor, Gwynedd, UK.
authors.forename: Georgios
authors.initials: G
authors.lastname: Merkouropoulos
authors.forename: Anil H
authors.initials: AH
authors.lastname: Shirsat
mesh_terms: D000085:Acetates / Q000494:pharmacology; D000595:Amino Acid Sequence; D017360:Arabidopsis / Q000235:genetics* / Q000254:growth & development / Q000382:microbiology; D029681:Arabidopsis Proteins / Q000235:genetics* / Q000378:metabolism; D001483:Base Sequence; D060406:Brassinosteroids; D002777:Cholestanols / Q000494:pharmacology; D003517:Cyclopentanes / Q000494:pharmacology; D018507:Gene Expression Regulation, Developmental / Q000187:drug effects; D018506:Gene Expression Regulation, Plant / Q000187:drug effects; D005966:Glucuronidase / Q000235:genetics / Q000378:metabolism; D006023:Glycoproteins / Q000235:genetics* / Q000378:metabolism; D007210:Indoleacetic Acids / Q000494:pharmacology; D008969:Molecular Sequence Data; D054883:Oxylipins; D010937:Plant Growth Regulators / Q000494:pharmacology*; D018515:Plant Leaves / Q000187:drug effects / Q000235:genetics / Q000254:growth & development; D010940:Plant Proteins / Q000235:genetics* / Q000378:metabolism; D018517:Plant Roots / Q000187:drug effects / Q000235:genetics / Q000254:growth & development; D030821:Plants, Genetically Modified; D011993:Recombinant Fusion Proteins / Q000235:genetics / Q000378:metabolism; D020156:Salicylic Acid / Q000494:pharmacology; D013260:Steroids, Heterocyclic / Q000494:pharmacology; D013314:Stress, Mechanical; D014974:Xanthomonas / Q000254:growth & development
chemical_list: D000085:Acetates; D029681:Arabidopsis Proteins; D060406:Brassinosteroids; D002777:Cholestanols; D003517:Cyclopentanes; D006023:Glycoproteins; D007210:Indoleacetic Acids; D054883:Oxylipins; D010937:Plant Growth Regulators; D010940:Plant Proteins; D011993:Recombinant Fusion Proteins; D013260:Steroids, Heterocyclic; C005488:extensin protein, plant; C072239:methyl jasmonate; D005966:Glucuronidase; D020156:Salicylic Acid; C023623:brassinolide