摘要
采用电子克隆与RT-PCR相结合的方法获得茶树硫酸盐转运蛋白(CsSUL3.5)的cDNA序列,并进行了相关生物信息学分析。克隆到茶树CsSUL3.5 cDNA序列2 017 bp(GenBank登录号KP984500),包含完整的开放阅读框(ORF)1914 bp,编码637个氨基酸。生物信息学分析显示,CsSUL3.5编码的蛋白分子量为70.38 kD,无信号肽,是疏水性的非分泌蛋白,有11个跨膜区;与其他物种相似性均在60%以上,与烟草的相似性最高(74%),具有硫酸盐转运蛋白家族典型的保守结构域和空间结构,属于硫酸盐转运蛋白家族。系统进化分析表明茶树的CsSUL3.5属于第3亚家族,与芝麻的关系比较近。荧光定量PCR表明该基因在茶树幼苗根与成熟叶中均有表达;Na_2SO_4与Na_2SeO_4处理均能显著诱导CsSUL3.5的表达。
The cDNA of putative sulfate transporter(CsSUL3.5) gene(GenBank accession number KP984500) was cloned from tea plant[Camellia sinensis(L.) O.Kuntze].Bioinformatics analysis indicated that the cDNA of CsSUL3.5 containing 1914 bp ORF encoded 637 amino acids residues with a putative molecular mass of 70.38 kD.It was predicted that CsSUL3.5 was a non-secretory protein without a signal peptide.CsSUL3.5 could be located in the plasma membrane with 11 transmembrane domains.Further analyses showed that CsSUL3.5 had the typically conserved domain and the highest identity(74%) with Sulfate Transporter 3.5 of Nicotiana sylvestris.The real-time PCR analysis showed that CsSUL3.5 transcripts were significantly increased upon the treatment of Na_2SO_4 and Na_2SeO_4.
出处
《园艺学报》
CAS
CSCD
北大核心
2015年第11期2306-2314,共9页
Acta Horticulturae Sinica
基金
国家现代农业产业技术体系建设专项资金项目(CARS-23)
中国农业科学院科技创新工程项目(CAAS-ASTIP-2014-TRICAAS)
浙江省农业新品种选育重大科技专项(2012C12905)