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科学美国人60秒双语科学新闻综合篇:真菌怎样清理煤矿?

Lily85 于2013-04-01发布 l 已有人浏览
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一座煤矿可能会污染当地的环境。但是有一类真菌可能会在不经意间,用其排除的废物清理煤矿。
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A coal mine can degrade its local environment. But a fungus may inadvertently help clean up the mine—with its own waste products.
一座煤矿可能会污染当地的环境。但是有一类真菌可能会在不经意间,用其排除的废物清理煤矿。

Researchers worked with a fungus called Stilbella aciculosa. As it makes spores, it also produces superoxide. That's a highly reactive kind of oxygen. When the released superoxide bumps into the mineral manganese in the environment, it makes that mineral much more reactive itself. The pepped-up manganese then grabs and holds a variety of toxic metals and other substances that need to be cleaned up and gotten out of coal mine drainage water.
研究人员研究了一种名叫Stilbella aciculosa的真菌。这种真菌长有芽孢,也分泌超氧化物(一种高活性的氧)。当释放出来的氧化物无意中接触到环境里的矿物锰时,会使矿物锰活性更强。激活的锰元素会吸收大量有毒金属,还有其他需要被清理的,从煤矿地下水系统脱离出来的物质。

The research, led by Colleen Hansel of Harvard and the Woods Hole Oceanographic Institution, appears in the Proceedings of the National Academy of Sciences.
该研究由来自哈弗和伍兹霍尔海洋研究所的科琳·汉斯领导,研究成果将发表在美国《国家科学院院刊》上。

It's been known that various bacteria and fungi can help in environmental remediation. The new research shows that production of the vital forms of manganese requires that the fungi and bacteria be actively producing superoxide. So creating conditions that encourage the organisms to make the superoxide could be the first step in a pathway by which they help manganese to literally do the dirty work. And make some toxic mine sites a lot cleaner.
众所周知,种类繁多的细菌和真菌能帮助改善环境。新的研究显示,能否生成这种重要的锰化合物,取决于真菌和细菌是否能够生产超氧化物。因此为这种有机体合成超氧化物创造有利条件,只是帮助矿物质锰“干脏活”这个过程中的第一步。这样便使一些有害矿址变得干净许多。

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