Impact of erecta mutation on leaf serration differs between Arabidopsis accessions.
Impact of erecta mutation on leaf serration differs between Arabidopsis accessions.
复制标题
拟南芥品种之间，直立突变对叶片锯齿的影响不同。
DOI：
10.1080/15592324.2016.1261231
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
N.
中科院分区：
文献类型：
--
作者：
ameshige;T.;Okamoto;S.;Tasaka;M.;Torii;K.U.;and Uchida;N.
植物叶片的锯齿状是一种受遗传和环境调控的形态特征。最近，有报道称，由ER、ERL1和ERL2三个ERECTA家族基因编码的受体蛋白在拟南芥的牙齿生长中起冗余作用。在该报告中，哥伦比亚(COL)的加入被用于分析，其中，该家族基因的信号突变没有表现出锯齿状缺陷。只有当三个ER家族中的两个基因丢失时，无牙、光滑的叶缘表型才明显。有趣的是，人们普遍认为，带有INER功能缺失突变的拟南芥Landsbergerecta(L.er)发育出具有较小叶齿的圆形叶片。在这里，我们证明了功能性的ERR转基因促进了L.ERR中牙齿的生长，达到了COL的水平，这表明L.ERR中的突变可能是导致叶齿生长减少的原因。这表明，单个突变以不同的方式影响牙齿生长，尽管这种背景依赖效应的分子基础仍有待解决。
Serrations or teeth of plant leaves are a morphological trait regulated genetically and environmentally. Very recently, it has been reported that the receptor kinases encoded by threeERECTA (ER)-family genes,ER, ER-LIKE1(ERL1) andERL2, redundantly play a role in tooth growth inArabidopsis thaliana. In the report, Columbia (Col) accession was used for analyses, where none of the signal mutant of theER-family genes exhibited serration defects. The toothless, smooth leaf margin phenotype was evident only when two out of the threeER-family genes were lost. Interestingly, it has been widely recognized that theArabidopsisaccession Landsbergerecta(L.er), which carries a loss-of-function mutation inER, develops round leaves with smaller leaf teeth. Here, we show that the functionalERtransgene promotes the tooth growth in L.erto the level of Col, indicating that theermutation in L.eris likely responsible for the reduced growth of leaf teeth. This suggests thatersingle mutation affects tooth growth in a different manner between Col and L.erbackgrounds, though the molecular basis for this background-dependent effect remains to be addressed.