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在与鲸落化学合成生态系统相关的深海沉积物中发现了神秘的真菌多样性。

Cryptic fungal diversity revealed in deep-sea sediments associated with whale-fall chemosynthetic ecosystems.

作者信息

Nagano Yuriko, Miura Toshiko, Tsubouchi Taishi, Lima Andre O, Kawato Masaru, Fujiwara Yoshihiro, Fujikura Katsunori

机构信息

Deep-Sea Biodiversity Research Group, Marine Biodiversity and Environmental Assessment Research Center, Research Institute for Global Change (RIGC), Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka, Japan.

Research Institute of Environment, Agriculture and Fisheries, Osaka, Japan.

出版信息

Mycology. 2020 Aug 6;11(3):263-278. doi: 10.1080/21501203.2020.1799879.

DOI:10.1080/21501203.2020.1799879
PMID:33062387
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7534350/
Abstract

In this study, sediments from whale-fall chemosynthetic ecosystems (two different sites, one naturally occurring at 4200 m water depth in South Atlantic Ocean and one artificially immersed at 100 m water depth in Kagoshima Bay, Japan) were investigated by Ion Torrent PGM sequencing of the ITS region of ribosomal RNA to reveal fungal communities in these unique marine environments. As a result, a total of 107 (897 including singletons) Operational Taxonomic Units (OTUs) were obtained from the samples explored. Composition of the 107 OTUs at the phylum level among the five samples from two different whale-fall sites was assigned to Ascomycota (46%), Basidiomycota (7%), unidentified fungi (21%), non-fungi (10%), and sequences with no affiliation to any organisms in the public database (No-match) (16%). The high detection of the unidentified fungi and unassigned fungi was revealed in the whale-fall environments in this study. Some of these unidentified fungi are allied to early diverging fungi and they were more abundant in the sediments not directly in contact with whalebone. This study suggests that a cryptic fungal community exists in unique whale-fall ecosystems.

摘要

在本研究中，通过对核糖体RNA的ITS区域进行离子激流PGM测序，对鲸落化学合成生态系统的沉积物（两个不同地点，一个自然形成于南大西洋4200米水深处，另一个人工沉入日本鹿儿岛湾100米水深处）进行了调查，以揭示这些独特海洋环境中的真菌群落。结果，从所探究的样本中总共获得了107个（包括单例在内为897个）可操作分类单元（OTU）。来自两个不同鲸落地点的五个样本中，107个OTU在门水平上的组成被归类为子囊菌门（46%）、担子菌门（7%）、未鉴定真菌（21%）、非真菌（10%）以及与公共数据库中任何生物均无关联的序列（无匹配）（16%）。本研究揭示了鲸落环境中未鉴定真菌和未分类真菌的高检出率。这些未鉴定真菌中的一些与早期分化的真菌相关，并且它们在不直接与鲸骨接触的沉积物中更为丰富。本研究表明，在独特的鲸落生态系统中存在一个隐秘的真菌群落。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/01ab/7534350/93565dd008e7/TMYC_A_1799879_F0006_B.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/01ab/7534350/66128557a8ea/TMYC_A_1799879_F0001_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/01ab/7534350/aab625a8a925/TMYC_A_1799879_F0002_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/01ab/7534350/ad695059a5da/TMYC_A_1799879_F0003_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/01ab/7534350/1967c7a74e36/TMYC_A_1799879_F0004_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/01ab/7534350/c2c8f439908b/TMYC_A_1799879_F0005_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/01ab/7534350/93565dd008e7/TMYC_A_1799879_F0006_B.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/01ab/7534350/66128557a8ea/TMYC_A_1799879_F0001_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/01ab/7534350/aab625a8a925/TMYC_A_1799879_F0002_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/01ab/7534350/ad695059a5da/TMYC_A_1799879_F0003_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/01ab/7534350/1967c7a74e36/TMYC_A_1799879_F0004_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/01ab/7534350/c2c8f439908b/TMYC_A_1799879_F0005_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/01ab/7534350/93565dd008e7/TMYC_A_1799879_F0006_B.jpg

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