pTCK303 Plasmid

PVT3203       2ug
 

pTCK303 Plasmid information

Promoter: Ubi, CaMV 35S
Replicon: ori
Terminator: NOS
Plasmid classification: plant series, RNAi vector
Plasmid size: 14621bp
Prokaryotic resistance: Kan
Screening markers: HygR
Cloned strain: DH5 alpha
Culture conditions: 37 centigrade, aerobic LB
Expression host: plant cells
5'sequencing primers: primers designed according to sequence
3'sequencing primers: primers designed according to sequence
Use: RNAi
 

pTCK303 Plasmid Description

RNA interferences (RNAi) has proven to be an effective strategy to knock out homologous genes in a wide range of species. Based on its principle, a new generation of vectors containing an inverted target sequence separated by an intron as a loop, developing simplifications to the procedure of RNAi construction are required to improve the efficiency of gene inactivation techniques. Here, a novel polymerase chain reaction (PCR)—based RNAi vector pTCK303 with a maize ubiquitin promoter, 2 specific multiple enzyme sites, and a rice intron was constructed for monocot gene silencing. With this vector, only 1 PCR product amplified by a single pair of primers and 2 ligation reactions were needed to create an RNAi construct, which shortened the time span before being transformed into the plant. To test the efficiency of vector pTCK303, a rice geneOsGAS1 was used, and its RNAi construct was introduced into rice calli. Southern blot analysis of the transgenic rice confirmed the presence of theOsGAS1 RNAi structure. The decrease inOsGAS1 level in the transgenic rice was detected by Northern blot probed with anOsGAS1-specific sequence. Moreover, the rate of inhibition of the RNA expression level in RNAi transgenic rice was approximately 85% according to our real-time PCR. Therefore, the RNAi vector pTCK303 based on the homology-dependent gene-silencing mechanisms facilitated the inhibition of endogenous genes in a monocot and was proven to be a practical and efficient platform for silencing a rice gene.

pTCK303 Plasmid Sequence