Tanggapan Felisa Wolfe-Simon Tentang Komentar Temuan Bakteri Arsenic

News KeSimpulan.com - Bagiakan sebuah badai meletus atas publikasi di Science tentang eksperimen bakteri yang menggunakan arsenic dalam DNA.

Eksperimen mikroba yang hidup arsenic dan bukan di fosfor telah menyulut kecurigaan para ilmuwan yang menuduh bahwa NASA selama ini telah menemukan kehidupan di luar Bumi tetapi merahasiakannya. Menanggapi hal tersebut, peneliti utama yaitu Felisa Wolfe-Simon, mikrobiolog dari NASA Astrobiology Institute dan US Geological Survey di Menlo Park, California, memberi pernyataan di situs Web-nya (http://www.ironlisa.com):

My research team and I are aware that our peer-reviewed Science article has generated some technical questions and challenges from within the scientific community. Questions raised so far have been consistent with the range of issues outlined by journalist Elizabeth Pennisi in her Science news article, which was published along with our research. For instance, other scientists have asked whether the bacteria had truly incorporated arsenic into their DNA, and whether the microbes had completely stopped consuming phosphorus. Our manuscript was thoroughly reviewed and accepted for publication by Science; we presented our data and results and drew our conclusions based on what we showed. But we welcome lively debate since we recognize that scholarly discourse moves science forward. We've been concerned that some conclusions have been drawn based on claims not made in our paper. In response, it's our understanding that Science is in the process of making our article freely available to the public for the next two weeks to ensure that all researchers have full access to the findings. We invite others to read the paper and submit any responses to Science for review so that we can officially respond. Meanwhile, we are preparing a list of "frequently asked questions" to help promote general understanding of our work.

Keributan dimulai setelah siaran pers NASA tentang konferensi pers Astrobiology yang memunculkan spekulasi liar bahwa NASA telah menemukan kehidupan di luar Bumi. Setelah konferensi pers tersebut para ilmuwan mulai menggerutu dan sebuah blog yang sangat kritis muncul dengan banyak komentar lebih pedas. Sementara Wolfe-Simon dan rekannya sedang menunggu kritik melalui peer-review jurnal.


Felisa Wolfe-Simon (NASA Astrobiology Institute, USA; U.S. Geological Survey, Menlo Park, CA, USA); Jodi Switzer Blum, Thomas R. Kulp, Shelley E. Hoeft, Ronald S. Oremland (U.S. Geological Survey, Menlo Park, CA, USA); Gwyneth W. Gordon (School of Earth and Space Exploration, Arizona State University, Tempe, AZ, USA); Jennifer Pett-Ridge, Peter K. Weber (Lawrence Livermore National Laboratory, Livermore, CA, USA); John F. Stolz (Department of Biological Sciences, Duquesne University, Pittsburgh, PA, USA); Samuel M. Webb (Stanford Synchrotron Radiation Lightsource, Menlo Park, CA, USA); Paul C. W. Davies (NASA Astrobiology Institute, USA; BEYOND: Center for Fundamental Concepts in Science, Arizona State University, Tempe, AZ, USA); and Ariel D. Anbar (NASA Astrobiology Institute, USA; School of Earth and Space Exploration, Arizona State University, Tempe, AZ, USA; Department of Chemistry and Biochemistry, Arizona State University, Tempe, AZ, USA). A Bacterium That Can Grow by Using Arsenic Instead of Phosphorus, Science 2 December 2010, DOI:10.1126/science.1197258
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