Caffeine in Plants：From Biosynthesis Pathway to Genetically Modified

ACTA HORTICULTURAE SINICA ›› 2012, Vol. 39 ›› Issue (9): 1849-1858.

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Caffeine in Plants：From Biosynthesis Pathway to Genetically Modified

TAN Li-Qiang, QI Gui-Nian, CHEN Sheng-Xiang, WANG Li-Yuan, WEI Kang, CHENG Hao

（1College of Horticulture，Sichuan Agricultural University，Ya’an，Sichuan 614025，China；2National Center for Tea Improvement，Tea Research Institute，Chinese Academy of Agricultural Science，Hangzhou 310008，China）

Online:2012-09-25 Published:2012-09-25

Abstract

Abstract: The main caffeine biosynthetic pathway is a sequence consisting of xanthosine → 7-methylxanthosine → 7-methylxanthine → theobromine → caffeine. In recent years，the enzymes and genes involved in caffeine biosynthesis have been isolated from Camellia and Coffea plants and genetically modified tea and coffee seedlings that producing low caffeine have been developed. Caffeine can also be synthesized in transgenic tobacco and chrysanthemum plants，which do not contain it naturally，for pests control purposes.

Key words: Camellia sinensis, Coffea, caffeine, biosynthesis, N-methyltransferase, genetically modified

CLC Number:

S 571

TAN Li-Qiang, QI Gui-Nian, CHEN Sheng-Xiang, WANG Li-Yuan, WEI Kang, CHENG Hao. Caffeine in Plants：From Biosynthesis Pathway to Genetically Modified[J]. ACTA HORTICULTURAE SINICA, 2012, 39(9): 1849-1858.

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Caffeine in Plants：From Biosynthesis Pathway to Genetically Modified

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