Abstract
Biolistic DNA delivery has been considered a universal tool for genetic manipulation to transfer exotic genes to cells or tissues due to its simplicity, versatility, and high efficiency. It has been a preferred method for investigating plant gene function in most monocot crops. The first transgenic sorghum plants were successfully regenerated through biolistic DNA delivery in 1993, with a relatively low transformation efficiency of 0.3%. Since then, tremendous progress has been made in recent years where the highest transformation efficiency was reported at 46.6%. Overall, the successful biolistic DNA delivery system is credited to three fundamental cornerstones: robust tissue culture system, effective gene expression in sorghum, and optimal parameters of DNA delivery. In this chapter, the history, application, and current development of biolistic DNA delivery in sorghum are reviewed, and the prospect of sorghum genetic engineering is discussed.
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