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This is Scientific American -60 seconds science. I’m Cynthia Graber. This will just take a minute.
A coal mine can degrade its local environment. But fungus1 may inadvertently help clean up the mine with its own waste products. Researchers worked with the fungus called Silbela Axiculosa. As it makes spores2, 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 mine much more reactive itself. The pepped-up manganese then grabs and holds a variety of toxic3 medals and other substances that need to be cleaned up and taken out of the coal mine drainage water. The research led by Colin Handso of Harvard and * ocean and graphic4 institution appears in the proceedings5 of the national academy of sciences. It’s been know that various bacteria and fungi6 can help in environmental remediation. The new research shows that production of the vital forms of manganese requires that fungi and bacteria be actively7 produce superoxide. So creating conditions that encourages the organism to create the superoxide could be the first step in the pathway by which they help the manganese to literally8 do the dirty work, and make some toxic sites a lot cleaner.
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1 fungus | |
n.真菌,真菌类植物 | |
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2 spores | |
n.(细菌、苔藓、蕨类植物)孢子( spore的名词复数 )v.(细菌、苔藓、蕨类植物)孢子( spore的第三人称单数 ) | |
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3 toxic | |
adj.有毒的,因中毒引起的 | |
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4 graphic | |
adj.生动的,形象的,绘画的,文字的,图表的 | |
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5 proceedings | |
n.进程,过程,议程;诉讼(程序);公报 | |
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6 fungi | |
n.真菌,霉菌 | |
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7 actively | |
adv.积极地,勤奋地 | |
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8 literally | |
adv.照字面意义,逐字地;确实 | |
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