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Biosynthesis of Camphane Volatile Terpenes in Amomum villosum Lour: Involved Genes and Enzymes

文献类型： 外文期刊

作者： Guo, Yuhua 1 ; Li, Yamei 1 ; Zhang, Pengfei 1 ; Luo, Zuliang 4 ; Yin, Junmei 1 ; Ma, Xiaojun 4 ; Yuan, Chao 1 ;

作者机构： 1.Chinese Acad Trop Agr Sci, Trop Crops Genet Resources Inst, Haikou 571101, Peoples R China

2.Minist Agr, Key Lab Crop Gene Resources & Germplasm Enhancemen, Haikou 571101, Peoples R China

3.Key Lab Trop Crops Germplasm Resources Genet Impro, Haikou 571101, Peoples R China

4.Chinese Acad Med Sci, Inst Med Plant Dev, 151 Malianwa North Rd, Beijing 100193, Peoples R China

关键词： biosynthesis pathway; camphane volatile terpenes; transcriptome

期刊名称：PLANTS-BASEL （ 影响因子：4.1； 五年影响因子：4.5 ）

ISSN： 2223-7747

年卷期： 2025 年 14 卷 12 期

页码：

收录情况： SCI

摘要： Amomum villosum (A. villosum) Lour., a medicinal species of the Zingiberaceae family, is used for medical purposes. Bornyl acetate, camphor, and borneol are the main bioactive ingredients in A. villosum fruit, and the amount of bornyl acetate is regarded as a measure of the fruit's quality. In order to explore the major effective genes regulating the biosynthesis of camphane volatile terpenes in A. villosum, some DEGs involved in camphane volatile terpene biosynthesis and transcription factors were analyzed and summarized in this study. The result showed that the content of bornyl acetate was altered in the different growth stages. In particular, the significant change occurred from 7 to 30 DAP (days after pollination). The content of bornyl acetate at 30 DAP was 169.3% more than that at 7 DAP. In total, 4782 up-regulated and 5284 down-regulated unigenes were found in G2 vs. G1, as well as 3324 up-regulated and 5036 down-regulated unigenes in G3 vs. G1, and 3332 up-regulated and 4490 down-regulated unigenes in G3 vs. G2. A total of 323 up-regulated and 820 down-regulated unigenes were shared in three growth stage comparisons. We screened the genes that encode the enzymes most likely to inhibit bornyl diphosphate synthase, borneol dehydrogenase, and BAHD acyltransferases. Interestingly, we found that borneol dehydrogenase and bornyl diphosphate synthase displayed bi-substrate features, suggesting that a substrate of catalyzation is promiscuity in the biosynthesis downstream pathway, and the unknown bornyl pyrophosphate hydrolase may not be the specific enzyme for borneol formation. Additionally, the DXR, HDS, and IDS found in the PPI network would assist in the understanding of molecular regulation. The results of this study constructed DGE libraries and identified key genes related to camphane volatile terpenes, which laid a foundation for a deep investigation of the mechanism of volatile terpene biosynthesis, and provided a reference for mining other key genes in A. villosum fruits.

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