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Published on April 29, 2009; 10.1104/pp.109.137125

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Received February 14, 2009
Accepted April 21, 2009

A Versatile Zero Background T-vector System for Gene Cloning and Functional Genomics

Songbiao Chen , Pattavipha Songkumarn , Jianli Liu , and Guo-Liang Wang *

Department of Plant Pathology, The Ohio State University, Columbus, Ohio 43210, USA; Hunan Province Key Laboratory of Crop Germplasm Innovation and Utilization, Hunan Agricultural University, Changsha, 410128, China

* Corresponding author; email: wang.620{at}osu.edu.

With the recent availability of complete genomic sequences of many organisms, high-throughput and cost-efficient systems for gene cloning and functional analysis are in great demand. Although site-specific recombination-based cloning systems such as the Gateway cloning technology are extremely useful for efficient transfer of DNA fragments into multiple destination vectors, the two-step cloning process is time-consuming and expensive. Here we report a zero background TA (ZeBaTA) cloning system that provides simple and high-efficiency direct cloning of PCR-amplified DNA fragments with almost no self-ligation. The improved T-vector system takes advantage of the restriction enzyme XcmI to generate a T-overhang after digestion and the negative selection marker gene ccdB to eliminate the self-ligation background after transformation. We demonstrate the feasibility and flexibility of the technology by developing a set of transient and stable transformation vectors for constitutive gene expression, gene silencing, protein tagging, protein subcellular localization detection, and promoter fragment activity analysis in plants. Because the system can be easily adapted for developing specialized expression vectors for other organisms, ZeBaTA provides a general, cost-efficient, and high-throughput platform that complements the Gateway cloning system for gene cloning and functional genomics.






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