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从亚种中分离出的物种的基因组和次生代谢组。

Genomes and secondary metabolomes of spp. isolated from ssp. .

作者信息

Malfent Fabian, Zehl Martin, Kirkegaard Rasmus H, Oberhofer Martina, Zotchev Sergey B

机构信息

Division of Pharmacognosy, Department of Pharmaceutical Sciences, University of Vienna, Vienna, Austria.

Vienna Doctoral School of Pharmaceutical, Nutritional and Sport Sciences (PhaNuSpo), University of Vienna, Vienna, Austria.

出版信息

Front Microbiol. 2024 Jun 14;15:1408479. doi: 10.3389/fmicb.2024.1408479. eCollection 2024.

Abstract

Bacterial endophytes dwelling in medicinal plants represent an as yet underexplored source of bioactive natural products with the potential to be developed into drugs against various human diseases. For the first time, several spp. were isolated from the rare and endangered traditional medicinal plant ssp. , also known as Edelweiss. In the search for novel natural products, nine endophytic spp. from Edelweiss were investigated via genome sequencing and analysis, followed by fermentation in different media and investigation of secondary metabolomes. A total of 214 secondary metabolite biosynthetic gene clusters (BGCs), of which 35 are presumably unique, were identified by the bioinformatics tool antiSMASH in the genomes of these isolates. LC-MS analyses of the secondary metabolomes of these isolates revealed their potential to produce both known and presumably novel secondary metabolites, whereby most of the identified molecules could be linked to their cognate BGCs. This work sets the stage for further investigation of endophytic streptomycetes from Edelweiss aimed at the discovery and characterization of novel bioactive natural products.

摘要

存在于药用植物中的细菌内生菌是生物活性天然产物的一个尚未得到充分探索的来源,有潜力被开发成治疗各种人类疾病的药物。首次从珍稀濒危传统药用植物高山火绒草(学名:Leontopodium nivale ssp. alpinum)中分离出了几种链霉菌属(Streptomyces)细菌。在寻找新型天然产物的过程中,对来自高山火绒草的9种内生链霉菌进行了全基因组测序和分析,随后在不同培养基中进行发酵并对其次级代谢组进行研究。通过生物信息学工具antiSMASH在这些分离株的基因组中总共鉴定出214个次级代谢产物生物合成基因簇(BGC),其中35个可能是独特的。对这些分离株次级代谢组的液相色谱-质谱分析表明,它们有产生已知和可能新型次级代谢产物的潜力,其中大多数已鉴定的分子可与其对应的BGC相关联。这项工作为进一步研究来自高山火绒草的内生链霉菌奠定了基础,旨在发现和表征新型生物活性天然产物。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27ed/11212599/454f222b0459/fmicb-15-1408479-g001.jpg

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