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科特迪瓦的一种新型产黄曲霉毒素种： Aspergillus korhogoensis。

Aspergillus korhogoensis, a Novel Aflatoxin Producing Species from the Côte d'Ivoire.

机构信息

Toxalim (Research Centre in Food Toxicology), Université de Toulouse, INRA, ENVT, INP-Purpan, UPS, 31027 Toulouse, France.

Laboratoire de Biotechnologie et Microbiologie des Aliments, UFR des Sciences et Technologie des Aliments, Université Nangui Abrogoua, 02 BP 801 Abidjan, Côte d'Ivoire.

出版信息

Toxins (Basel). 2017 Oct 31;9(11):353. doi: 10.3390/toxins9110353.

DOI:10.3390/toxins9110353
PMID:29088078
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5705968/
Abstract

Several strains of a new aflatoxigenic species of , , were isolated in the course of a screening study involving species from section found contaminating peanuts () and peanut paste in the Côte d'Ivoire. Based on examination of four isolates, this new species is described using a polyphasic approach. A concatenated alignment comprised of nine genes (, , , , , , , and ) was subjected to phylogenetic analysis, and resulted in all four strains being inferred as a distinct clade. Characterization of mating type for each strain revealed as a heterothallic species, since three isolates exhibited a singular locus and one isolate exhibited a singular locus. Morphological and physiological characterizations were also performed based on their growth on various types of media. Their respective extrolite profiles were characterized using LC/HRMS, and showed that this new species is capable of producing B- and G-aflatoxins, aspergillic acid, cyclopiazonic acid, aflavarins, and asparasones, as well as other metabolites. Altogether, our results confirm the monophyly of , and strengthen its position in the clade, as the sister taxon of .

摘要

在一项涉及科特迪瓦污染花生（）和花生酱的节（）物种的筛选研究中，分离到了几种新的产黄曲霉毒素的真菌。基于对四个分离株的检查，使用多相方法描述了这个新物种。对包含九个基因（、、、、、、和）的串联排列进行系统发育分析，结果表明这四个菌株都属于一个独特的分支。对每个菌株的交配型特征的研究表明，因为三个菌株表现出单一的 位点，一个菌株表现出单一的 位点，所以是异宗配合的种。还根据它们在各种类型的培养基上的生长情况进行了形态和生理特征的描述。使用 LC/HRMS 对它们各自的外消旋体图谱进行了表征，结果表明该新种能够产生 B-和 G-黄曲霉毒素、曲酸、环匹阿尼酸、黄曲霉素和天门冬酰胺以及其他代谢物。总的来说，我们的结果证实了 的单系性，并加强了它在 分支中的地位，作为 的姐妹分类群。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f79/5705968/526a6828ac36/toxins-09-00353-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f79/5705968/dc3e6fa5aefc/toxins-09-00353-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f79/5705968/44e24b6d0dca/toxins-09-00353-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f79/5705968/0386b2a0ed04/toxins-09-00353-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f79/5705968/ffbf7494b775/toxins-09-00353-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f79/5705968/356f4fc9898e/toxins-09-00353-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f79/5705968/5f466ae5a52b/toxins-09-00353-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f79/5705968/526a6828ac36/toxins-09-00353-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f79/5705968/dc3e6fa5aefc/toxins-09-00353-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f79/5705968/44e24b6d0dca/toxins-09-00353-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f79/5705968/0386b2a0ed04/toxins-09-00353-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f79/5705968/ffbf7494b775/toxins-09-00353-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f79/5705968/356f4fc9898e/toxins-09-00353-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f79/5705968/5f466ae5a52b/toxins-09-00353-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4f79/5705968/526a6828ac36/toxins-09-00353-g007.jpg

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