Rhizosphere microbial community structure is selected by habitat but not plant species in two tropical seagrass beds
Rhizosphere microbial community structure is selected by habitat but not plant species in two tropical seagrass beds
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根际微生物群落结构由栖息地选择，而不是两个热带海草床中的植物物种
DOI：
10.3389/fmicb.2020.00161
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发表时间：
2020-03
影响因子：
5.2
通讯作者：
Huang Xiaoping
中科院分区：
文献类型：
--
作者：
Zhang Xia;Zhao Chunyu;Yu Shuo;Jiang Zhijian;Liu Songlin;Wu Yunchao;Huang Xiaoping
在各种海洋和淡水生态系统中，对一系列植物物种的呼吸圈细菌群落结构及其决定性驱动因素进行了研究。然而，仍然有有限的信息对海草床微生物群落的栖息地的影响。本研究旨在确定哪些因素（生境和植物种类）对海南岛新村湾和潭门港的两种热带海草（Thalassia hemprichii和Enhalus acoroides）根际细菌具有关键作用。使用Illumina HiSeq测序，我们观察到两种栖息地之间的细菌丰富度，多样性和类群的相对丰度存在实质性差异，其特征在于沉积物类型和营养状况不同。富营养化的新村湾桑迪沉积物中的根际细菌以脱硫杆菌科和螺旋杆菌科为主，主要参与硫酸盐循环;贫营养化的潭门港礁滩中的根际细菌以弧菌科和沃氏菌科为主，可能在氮和碳固定中发挥重要作用。此外，我们推测，这两种海草物种的宿主特异性影响可能会在营养丰富的条件下和混合群落斑块中被覆盖，强调了沉积物营养状况和斑块植被组成的重要性。此外，我们的研究证实，变形菌更适应根际环境比发生在散装沉积物，这主要是由著名的厚壁菌门发酵细菌为主的低碳条件。
Rhizosphere bacterial community structures and their determining drivers have been studied in a variety of marine and freshwater ecosystems for a range of plant species. However, there is still limited information about the influence of habitat on microbial communities in seagrass beds. This study aimed to determine which factors (habitat and plant species) have crucial roles on the rhizospheric bacteria associated with two tropical seagrass species (Thalassia hemprichii and Enhalus acoroides) that are dominant at Xincun Bay and Tanmen Harbor in Hainan Island, South China. Using Illumina HiSeq sequencing, we observed substantial differences in the bacterial richness, diversity, and relative abundances of taxa between the two habitats, which were characterized differently in sediment type and nutrient status. Rhizospheric bacteria from sandy sediment at the eutrophic Xincun Bay were dominated by Desulfobacteraceae and Helicobacteraceae, which are primarily involved in sulfate cycling, whereas rhizosphere microbes from the reef flat at oligotrophic Tanmen Harbor were dominated by Vibrionaceae and Woeseiaceae, which may play important roles in nitrogen and carbon fixing. Additionally, we speculated that host-specific effects of these two seagrass species may be covered under nutrient-rich conditions and in mixed community patches, emphasizing the importance of the nutrient status of the sediment and vegetation composition of the patches. In addition, our study confirmed that Proteobacteria was more adapted to the rhizosphere environment than to low-carbon conditions that occurred in bulk sediment, which was primarily dominated by well-known fermentative bacteria in the phylum Firmicutes.
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影响因子：
5.2
作者：
Goldfarb KC;Karaoz U;Hanson CA;Santee CA;Bradford MA;Treseder KK;Wallenstein MD;Brodie EL
通讯作者：
Brodie EL
DOI：
10.1038/ismej.2015.257
发表时间：
2016-08
期刊：
The ISME journal
影响因子：
--
作者：
Dyksma S;Bischof K;Fuchs BM;Hoffmann K;Meier D;Meyerdierks A;Pjevac P;Probandt D;Richter M;Stepanauskas R;Mußmann M
通讯作者：
Mußmann M
DOI：
10.1038/ismej.2012.8
发表时间：
2012-08
期刊：
The ISME journal
影响因子：
--
作者：
通讯作者：
--
影响因子：
5.2
作者：
Cúcio C;Engelen AH;Costa R;Muyzer G
通讯作者：
Muyzer G
影响因子：
7.4
作者：
T. S. Walker;H. Bais;E. Grotewold;J. Vivanco
通讯作者：
T. S. Walker;H. Bais;E. Grotewold;J. Vivanco