Genome sequencing and analysis of the paclitaxel-producing endophytic fungus Penicillium aurantiogriseum NRRL 62431

作   者：杨艳芳, 赵海楠, Barrero RA, Zhang BH, 孙桂玲, Wilson IW,谢福亮, Walker KD, Parks JW, Bruce R, 郭广武, Chen L, 张勇, 黄新, 唐其, 刘洪伟, Bellgard MI, 邱德有, 赖锦盛, Hoffman A.
期刊名称：BMC Genomics
影响因子：4.041
卷 期 号：15
页     码：69
关键词：Penicillium aurantiogriseum NRRL 62431, Paclitaxel, Taxol, Endophytic fungi, Genome sequence, Horizontal
论文摘要：
Background: Paclitaxel (Taxol? is an important anticancer drug with a unique mode of action. The biosynthesis of paclitaxel had been considered restricted to the Taxus species until it was discovered in Taxomyces andreanae, an endophytic fungus of T. brevifolia. Subsequently, paclitaxel was found in hazel (Corylus avellana L.) and in several other endophytic fungi. The distribution of paclitaxel in plants and endophytic fungi and the reported sequence homology of key genes in paclitaxel biosynthesis between plant and fungi species raises the question about whether the origin of this pathway in these two physically associated groups could have been facilitated by horizontal gene transfer.
Results: The ability of the endophytic fungus of hazel Penicillium aurantiogriseum NRRL 62431 to independently synthesize paclitaxel was established by liquid chromatography-mass spectrometry and proton nuclear magnetic resonance. The genome of Penicillium aurantiogriseum NRRL 62431 was sequenced and gene candidates that may be involved in paclitaxel biosynthesis were identified by comparison with the 13 known paclitaxel biosynthetic genes in Taxus. We found that paclitaxel biosynthetic gene candidates in P. aurantiogriseum NRRL 62431 have evolved independently and that horizontal gene transfer between this endophytic fungus and its plant host is unlikely.
Conclusions: Our findings shed new light on how paclitaxel-producing endophytic fungi synthesize paclitaxel, and will facilitate metabolic engineering for the industrial production of paclitaxel from fungi.