Shi Shaohua, Tian Lei, Xu Shangqi, Ji Li, Nasir Fahad, Li Xiujun, Song Zhiping, Tian Chunjie
Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, Jilin, China.
University of Chinese Academy of Sciences, Beijing, China.
Arch Microbiol. 2019 May;201(4):477-486. doi: 10.1007/s00203-018-1586-z. Epub 2018 Oct 25.
The fungicides used to control diseases in cereal production can have adverse effects on non-target microbial communities, with possible consequences for plant health and productivity. Although we know that fungicides affect microbial community structure and soil activities, it is unclear how crop cultivars have altered the impact of fungicides on rhizomicrobiomes. In this study, the rhizosphere bacterial and fungal communities and structures of cultivated crops and their wild relatives were studied by Illumina MiSeq sequencing analysis. The results indicated that the rhizomicrobiome communities of wild crops reacted more strongly to fungicides than that of their cultivated relatives. Furthermore, fungal community composition was more affected by fungicides than bacterial community composition. Remarkably, the same trend was observed in both soybean and rice with regard to the influence of crop cultivar on the response of the rhizomicrobiome to fungicide application, although the level of the response was not similar. We report for the first time that the rhizomicrobiomes of wild crops reacted more strongly to fungicides than the rhizomicrobiomes of cultivated crops.
用于控制谷物生产中病害的杀菌剂可能会对非靶标微生物群落产生不利影响，进而可能影响植物健康和生产力。虽然我们知道杀菌剂会影响微生物群落结构和土壤活性，但尚不清楚作物品种如何改变杀菌剂对根际微生物群的影响。在本研究中，通过Illumina MiSeq测序分析对栽培作物及其野生近缘种的根际细菌和真菌群落及结构进行了研究。结果表明，野生作物的根际微生物群对杀菌剂的反应比其栽培近缘种更为强烈。此外，真菌群落组成比细菌群落组成受杀菌剂的影响更大。值得注意的是，在大豆和水稻中均观察到了相同的趋势，即作物品种对根际微生物群对杀菌剂施用的反应有影响，尽管反应程度不尽相同。我们首次报道，野生作物的根际微生物群对杀菌剂的反应比栽培作物的根际微生物群更为强烈。
