A highly cited __Nature__ paper that identified a long-sought receptor critical for mediating plant response to stress is being retracted after researchers were unable to reproduce the results. Corresponding author on the paper, linkurl:Robert Hill;http://home.cc.umanitoba.ca/~rhill/ from the University of Manitoba, first discovered a problem with the results over the summer when one of his students failed to reproduce the findings. "The binding assay procedures, at least in our hands, did not give the correct results," said Hill. Hill and his coauthors were the first to identify a receptor for abscicic acid (ABA), which regulates plant stress response. Researchers have been trying to identify an ABA receptor for decades -- a finding that would be of major interest to the agriculture industry. In the linkurl:study,;http://www.nature.com/nature/journal/v439/n7074/abs/nature04373.html published in 2006 and cited more 120 times, first author Fawzi Razem, who conducted the work as a postdoc in Hill's lab, found that FCA, a...

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