Merkouropoulos Georgios, Shirsat Anil H
School of Biological Sciences, University of Wales, Bangor, Gwynedd, UK.
Planta. 2003 Jul;217(3):356-66. doi: 10.1007/s00425-003-1002-y. Epub 2003 Mar 11.
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.
我们详细阐述了拟南芥（Arabidopsis thaliana (L.) Heynh.）atExt1伸展蛋白基因的表达情况。atExt1通常在根和花序中表达，并受创伤、外源水杨酸、茉莉酸甲酯、生长素和油菜素甾体诱导。对表达atExt1::gus融合基因的转基因植株进行的Northern分析和组织化学分析表明，该基因也受油菜病原菌野油菜黄单胞菌野油菜致病变种诱导，且这种诱导作用局限于感染部位附近的组织。atExt1在脱落和衰老区域的表达也表明其参与了这些重要的发育过程。
