{"id":121387,"date":"2019-06-04T20:00:15","date_gmt":"2019-06-04T20:00:15","guid":{"rendered":"https:\/\/www.bnreport.com\/how-one-fern-hoards-toxic-arsenic-in-its-fronds-and-doesnt-die\/"},"modified":"2019-06-04T20:00:15","modified_gmt":"2019-06-04T20:00:15","slug":"how-one-fern-hoards-toxic-arsenic-in-its-fronds-and-doesnt-die","status":"publish","type":"post","link":"https:\/\/www.bnreport.com\/en\/how-one-fern-hoards-toxic-arsenic-in-its-fronds-and-doesnt-die\/","title":{"rendered":"How one fern hoards toxic arsenic in its fronds and doesnt die"},"content":{"rendered":"

The Chinese brake fern looks unassuming. But Pteris vittata<\/em> has a superpower: It sucks up arsenic, tucks the toxic metal away in its fronds and lives to tell the tale.<\/p>\n

No other plants or animals are known to match its ability to hoard the heavy metal. Now researchers have identified three genes essential<\/a> to how the fern accumulates arsenic, according to a study in the May 20 Current Biology<\/em>.<\/p>\n

The fern shuttles the heavy metal, often found as arsenate in soil, from the plants roots to its shoots. There, the three genes make proteins that help corral arsenate as it moves through the plants cells and into a cellular compartment called a vacuole, where the arsenic is sequestered, the team found.<\/p>\n

One protein, GAPC1, gloms onto the arsenate, possibly keeping it from doing damage during its journey. Another, OCT4, appears to help arsenate cross membranes, possibly into a structure where a third protein, GSTF1, transforms it into arsenite, the form stored by the plant. Tinkering with the genes caused the plants to die when exposed to arsenic, say Jody Banks, a botanist at Purdue University in West Lafayette, Ind., and her colleagues.<\/p>\n

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Pteris vittata<\/em> ferns take up arsenic and store it in their fronds using three proteins, called GSTF1, OCT4 and GAPC1. Scientists forced the trio to reveal their cellular locations by making the proteins glow green, as seen in these microscope images.<\/p>\n

These ferns are already being used to draw arsenic out of soil in some contaminated areas. It \u201ctakes a long time, but itRead More \u2013 Source<\/strong><\/a>
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science news<\/a><\/h5>\n

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