Effects of Organic Substances on Growth of and Coenzyme Q₁₀ Synthesis in Hairy Root of Nicotiana tabacum

The effects of organic substances,such as thiamine hydrochloride,phaseomannite,yeast extract,L-cysteine,methionine,L-leucine,and L-α-alanine,on the growth of and coenzyme Q₁₀(CoQ₁₀) synthesis in hairy root of cv.Zhongyan 99 were studied with liquid suspension culture.The results showed that:when concentration was suitable,thiamine hydrochloride,L-cysteine,methionine,L-leucine and L-α-alanine promoted the growth of and CoQ₁₀ synthesis in hairy root obviously;while the effect of yeast extract was negative;phaseomannite positively affected the growth of hairy root,but did not improve the synthesis of CoQ₁₀.