Navigation Links
Fern's evolution gives arsenic tolerance that may clean toxic land
Date:6/10/2010

WEST LAFAYETTE, Ind. - Isolating a gene that allows a type of fern to tolerate high levels of arsenic, Purdue University researchers hope to use the finding to create plants that can clean up soils and waters contaminated by the toxic metal.

The fern Pteris vittata can tolerate 100 to 1,000 times more arsenic than other plants. Jody Banks, a professor of botany and plant pathology, and David Salt, a professor of horticulture, uncovered what may have been an evolutionary genetic event that creates an arsenic pump of sorts in the fern.

"It actually sucks the arsenic out of the soil and puts it in the fronds," Banks said. "It's the only multi-cellular organism that can do this."

Without a genome sequenced for Pteris vittata, Banks and Salt used a method of gene identification called yeast functional complementation. They combined thousands of different Pteris vittata genes into thousands of yeast cells that were missing a gene that makes them tolerant to arsenic.

The yeast was exposed to arsenic, with most of it dying. The yeast strains that lived had picked up the genes from Pteris vittata that convey arsenic resistance.

To confirm that this was the correct gene, its function was knocked down and the plant was exposed to arsenic. Without the gene functioning properly, the plant could not tolerate arsenic.

"It tells us that this gene is necessary for the plant to function on arsenic," said Banks, whose findings were published in the early online version of the journal Plant Cell. "We looked for a similar gene in the plant Arabidopsis. We couldn't find it. It can't be found in any flowering plant."

Banks and Salt found that the protein encoded by this gene ends up in the membrane of the plant cell's vacuole. Salt said the protein acts as a pump, moving arsenic into the cell's equivalent of a trashcan.

"It stores it away from the cytoplasm so that it can't have an effect on the plant," Sal
'/>"/>

Contact: Brian Wallheimer
bwallhei@purdue.edu
765-496-2050
Purdue University
Source:Eurekalert

Page: 1 2

Related biology news :

1. Arsenic hyperaccumulating ferns: How do they survive?
2. DNA barcoding exposes fake ferns in international plant trade
3. Ferns took to the trees and thrived
4. Flus evolution strategy strikes perfect balance
5. Some like it hot: Site of human evolution was scorching
6. Molecular methods are not sufficient in systematics and evolution
7. Jumping genes provide extensive raw material for evolution, Penn study finds
8. Discovery of stem cell illuminates human brain evolution, points to therapies
9. Co-discoverer of 4.4-million-year-old Ardi to give talk at UC Riverside on human evolution
10. Hammerhead shark study shows cascade of evolution affected size, head shape
11. Space technology revolutionizes archaeology, understanding of Maya
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/18/2014)... for evaluation of suspected genetic conditions, whole-exome sequencing ... including detection of a number of rare genetic ... to a study appearing in JAMA . ... the American Society of Human Genetics annual meeting. ... regions of thousands of genes simultaneously using next-generation ...
(Date:10/17/2014)... German . To ... treating overdoses, doctors are often limited to supportive therapy such ... a combination of drugs involved. So what can be done ... pills? ETH professor Jean-Christophe Leroux from the Institute of Pharmaceutical ... this question. "The task was to develop an agent that ...
(Date:10/16/2014)... they are anything but sustainable: environmental damage to ... becoming increasingly evident. Despite their disadvantages, however, monocultures ... as the sole possibility of achieving higher yields ... Schmid, an ecology professor at the University of ... and forestry. After all, a new study carried ...
Breaking Biology News(10 mins):Whole-exome sequencing shows potential as diagnostic tool 2Emergency aid for overdoses 2Emergency aid for overdoses 3Plant communities produce greater yield than monocultures 2Plant communities produce greater yield than monocultures 3
... the possibility that the critically short supply of livers ... "marginal" livers with a substance that protects them from ... report appears in ACS, journal Molecular Pharmaceutics . ... for liver transplants has grown over the years, though ...
... DALLAS June 1, 2011 A drug ... as a therapy for a common form of dementia, ... hydroxamic acid (SAHA) holds promise as a first-generation drug ... (FTD), a progressive, inherited neurodegenerative disease for which there ...
... Virginia Tech,s Advanced Experimental Thermofluid Engineering Research ... professor Pavlos P. Vlachos, professor of mechanical engineering, ... mechanics from the Measurement Science and Technology ... Physics. John J. Charonko, of Blacksburg, ...
Cached Biology News:Cancer drug holds promise as first treatment for common, inherited dementia 2Virginia Tech mechanical engineers win measurement science best paper award 2
(Date:10/20/2014)... October 20, 2014 The report ... Dispensing Systems, Packaging and Labeling Systems, Table-top Counters) ... - Global Forecasts & Trends to 2019” analyzes ... opportunities in North America, Europe, Asia-Pacific, and the ... market tables and 30 figures spread through 300 ...
(Date:10/20/2014)... Convey Computer , the leader in ... State University won first place in the 2014 ... the team’s solution achieved the highest overall performance in ... place finisher. , Experts from all segments of the ... challenge, using a variety of design tools, hardware and ...
(Date:10/20/2014)... , Oct. 20, 2014 /PRNewswire/ - BIOREM Inc. (TSXV: BRM) ... million which brings Q3 orders to $5.8 million and provides a ... projects in North America and one in ... to bid new projects at record levels," said Peter Bruijns ... higher at the end of Q3 than they have been for ...
(Date:10/20/2014)... 2014  GenVec, Inc. (NASDAQ: GNVC ) today ... from its board of directors effective on October 24, 2014.  ... served as its chairman from June 2006 to November 2013.  ... Corporate Governance and Audit Committees of the board.  ... of dedicated service to GenVec, and its stockholders," said ...
Breaking Biology Technology:Pharmacy Automation Systems Market worth $4,566.2 Million by 2019 - New Research Report by MarketsandMarkets 2Pharmacy Automation Systems Market worth $4,566.2 Million by 2019 - New Research Report by MarketsandMarkets 3Pharmacy Automation Systems Market worth $4,566.2 Million by 2019 - New Research Report by MarketsandMarkets 4Team from Iowa State Wins 2014 MemoCODE Design Contest Using Convey HC-2ex 2Team from Iowa State Wins 2014 MemoCODE Design Contest Using Convey HC-2ex 3Zola P. Horovitz To Retire From GenVec Board 2
... July 8 /Xinhua-PRNewswire-FirstCall/ -- China-Biotics,Inc. (OTC Bulletin ... firm specializing in the manufacture, research, development,marketing ... Dr.,Shuguang Fang, China-Biotics, Chief Technology Officer, has ... China,s 3rd Annual Food Safety Technology Forum,2008 ...
... purchase, distribute US-made bulk API, BATON ... Albemarle Corporation (NYSE: ALB ), a ... and other active pharmaceutical,ingredients (APIs), has signed ... Laboratories Ltd. As per the agreement, effective,immediately, ...
... Board and Management Focused on Near-Term Milestones and Maintain ... ... DIEGO, July 8 /PRNewswire-FirstCall/ - MIGENIX Inc.,(TSX: MGI, OTC: MGIFF), ... requisition for a special meeting of shareholders,for the purpose of ...
Cached Biology Technology:China-Biotics, Inc. to Present at China's 3rd Annual Food Safety Technology Forum 2008 2China-Biotics, Inc. to Present at China's 3rd Annual Food Safety Technology Forum 2008 3Albemarle Enters Ibuprofen Agreement with Dr. Reddy's 2Albemarle Enters Ibuprofen Agreement with Dr. Reddy's 3MIGENIX Corporate Update and Requisition of Special Meeting 2MIGENIX Corporate Update and Requisition of Special Meeting 3MIGENIX Corporate Update and Requisition of Special Meeting 4MIGENIX Corporate Update and Requisition of Special Meeting 5MIGENIX Corporate Update and Requisition of Special Meeting 6MIGENIX Corporate Update and Requisition of Special Meeting 7MIGENIX Corporate Update and Requisition of Special Meeting 8
...
... Signet offers the most comprehensive, cost-effective ... We have incorporated unprecedented quality into ... This includes proven detection chemistries and ... the TechMate protocol. It also includes ...
... Resistant (X/R) Red System consists of ... Activator and X/R Red Buffer. The ... phosphatase to produce red staining that ... Contains:, , Buffer, 100 mL , ...
Human Cell Line Slides...
Biology Products: