Chytrids dominate arctic marine fungal communities
Chytrids dominate arctic marine fungal communities
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DOI：
10.1111/1462-2920.13216
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发表时间：
2016-06-01
影响因子：
5.1
通讯作者：
Gradinger, R.
中科院分区：
文献类型：
--
作者：
Hassett, B. T.;Gradinger, R.
气候变化通过改变天气模式和减少海冰覆盖范围，正在改变北极生态系统的结构。这些变化增加了北冰洋的光渗透，预计将增加初级生产;然而，增加的光照也会引起光抑制，并在藻类和浮游植物中造成生理压力，从而有利于疾病的发展。真菌是许多生态系统中的贪婪寄生虫，可以通过食物网调节碳的流动，但在海洋环境中的特征很差。我们提供了第一个数据，从任何海洋生态系统中，壶菌门的真菌占主导地位的真菌群落，并在其发生的光强度和藻类压力。增加的光穿透压力冰藻和提高疾病的发病率下减少积雪。我们的研究结果表明，壶菌占主导地位的北极海洋真菌群落，并有可能迅速改变初级生产模式，增加光穿透。
Climate change is altering Arctic ecosystem structure by changing weather patterns and reducing sea ice coverage. These changes are increasing light penetration into the Arctic Ocean that are forecasted to increase primary production; however, increased light can also induce photoinhibition and cause physiological stress in algae and phytoplankton that can favour disease development. Fungi are voracious parasites in many ecosystems that can modulate the flow of carbon through food webs, yet are poorly characterized in the marine environment. We provide the first data from any marine ecosystem in which fungi in the Chytridiomycota dominate fungal communities and are linked in their occurrence to light intensities and algal stress. Increased light penetration stresses ice algae and elevates disease incidence under reduced snow cover. Our results show that chytrids dominate Arctic marine fungal communities and have the potential to rapidly change primary production patterns with increased light penetration.