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Position: Home > Articles > Cloning and characterisation of pod shattering gene BnRPL in Brassica napus Chinese Journal of Oil Crop Sciences 2013,35 (1) 17-23

甘蓝型油菜裂角相关基因BnRPL的克隆与分析

作  者:
彭鹏飞;胡琼;李云昌;付丽;陈玉峰;刘佳;梅德圣
单  位:
中国农业科学院油料作物研究所;农业部油料作物生物学与遗传育种重点实验室
关键词:
油菜;角果皮;假膈膜;RPL基因;RACE;序列分析;表达
摘  要:
为鉴定甘蓝型油菜裂角相关基因,基于候选基因途径,利用同源克隆结合RACE方法,在甘蓝型油菜易裂角品系R2中扩增出了两个RPL基因的全长cDNA序列,其中一条序列长度为2 068bp,开放阅读框序列位置为154-1 911位,总长为1 758bp,命名为BnRPL.a。另一条序列全长为2 041bp,开放阅读框序列位置为154-1 887位,总长为1 734bp,命名为BnRPL.c。分析表明利用PCR方法得到的BnRPL基因由3个内含子和4个外显子组成,与拟南芥RPL基因结构相似。氨基酸序列同源性分析表明,BnRPL与拟南芥AtRPL和荒野独行菜(Lepidium campestre)的RPL具有较高的同源性。系统发育进化树显示RPL蛋白在双子叶植物和单子叶植物的分化过程中发生了序列变异。Bn-RPL基因存在时空表达的组织特异性,在发育的角果(花后20d)表达量最大;成熟后期在角果皮和假隔膜中表达,在种子中不表达。
译  名:
Cloning and characterisation of pod shattering gene BnRPL in Brassica napus
作  者:
PENG Peng-fei,HU Qiong,LI Yun-chang,FU Li,CHEN Yu-feng,LIU Jia,MEI De-sheng*(Oil Crops Research Institute of Chinese Academy of Agricultural Sciences,Key Laboratory of Biology and Genetic Improvement of Oil Crops,Ministry of Agriculture,Wuhan 430062,China)
关键词:
Brassica napus L.;Silique wall;Pseudoseptum;RPL gene;RACE;Sequences analysis;Expression
摘  要:
The cDNA fragment of a putative pod shattering gene BnRPL was cloned from Brassica napus line R2(easy to disperse seed) by RACE according to conserved region of AtRPL gene.Results showed that two BnRPLs were amplified named as BnRPL.a [with an open reading frame(ORF) of 1 758bp,coding 585 amino acids] and BnRPL.c(with an ORF of 1 734bp,coding 577 amino acids).Each BnRPLs included 3 introns and 4 exons.BnRPL.a and BnRPL.c was 92% identical.Comparing to RPL sequences from other species,BnRPL showed high homologous to AtRPL from Arabidopsis thaliana and RPL from Lepidium campestre.Variation of RPL protein occurred during the divergence from dicots and monocots.RT-PCR expression analysis showed that BnRPL gene was highly expressed in developing siliques(20d after blooming).Moreover,it expressed in maturing silique wall and pseudoseptum,but not in seeds.

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