Two pairs of primers containing restriction enzyme site were designed and used to amplify sequenced plasmid.Two PCR products were digested by the corresponding restricted enzymes respectively,and connect to be a long reverse complementary fragment.The fragment was double digested by corresponding enzymes and inserted between CaMv 35S promoter and NOS terminator of expression vector pSMAK311.Confirmed by restriction endonucleases,the RNAi expression vector was transformed into Agrobacterium tumefaciens strain EHA101 by freezing-thaw method.Using Uenishiwase′ persimmon in vitro plantlet leaves as explant,Agrobacterium-mediated transformation system was optimized.The results showed that adding 200 μmol/L of AS in both agrobacterium suspension liquid and culture medium and Spc concentration gradient screening could increase the frequency of transformation.7 strains of transformed Uenishiwase persimmon plantlets were verified by PCR.
YU Cong-cong1
,
MA Jun-lian1
,
SONG Chun-li2
,
CHEN Jia1
. Uenishiwase Persimmon ETR5 Gene RNA Interference Expression Vector Construction and Genetic Transformation[J]. Acta Agriculturae Boreali-Sinica, 2010
, 25(1)
: 84
-87
.
DOI: 10.7668/hbnxb.2010.01.016
[1] 张子德,马俊莲,甄增立.柿果采后生理研究[J].河北农业大学学报,1995,18(2):105-107.
[2] Fire A,Xu S,Montgomery M K.Potent and specific genetic interference by double-strand RNA in Caenorhabditis elegans[J].Nature,1998,391:806-811.
[3] Hoffmann T,Kalinowski G,Schwab W.RNAi-induced silencing of gene expression in strawberry fruit(Fragaria ananassa) by agroinfiltration:a rapid assay for gene function analysis[J].The Plant Journal,2006,48:818-826.
[4] Nakamura Y,Kobayashi S,Nakajima I.Agrobacterium mediate transformation and plant regeneration from hypocotyl segments of Japanese persimmon(Diospyros kaki Thunb)[J].Plant Cell Reports,1998,17:435-440.
[5] 陈佳,马俊莲,张子德,等.上西早生柿ETR5基因片段的克隆与植物表达载体的构建[J].华北农学报,2007,22(4):25-28.
[6] 朱祯,刘翔.转基因作物-恶魔或是救星[J].农业生物技术学报,2000,8(1):1-5.
[7] Tao R,Dandekar A M,Uratsu S L.et al.Engineering genetic resistance against insects in Japanese persimmon using the cryIA(c) gene of Bacillus thuringiensis[J].Journal of the American Society for Horticultural Science,1997,122(6):764-771.