IGNACIO CHAPELA NATURE PDF

Jump to navigation. Visibility is such a great obsession with us, humans! But the world knows little about that. Think about it: how long has the eye--as a biological structure-- been around?

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The Laboratory of Microbial Ecology is focused on a relatively small segment of the very large and disparate group of invisible life forms we call "microbes". They work with eukaryotic microbes, and are most focused on those eukaryotic microbes living in terrestrial ecosystems. That would mean the unwieldy and multifarious collection of life forms we call fungi.

In those terrestrial ecosystems they ask simple questions: Where are microbes? How many of them? These are the basic questions of ecology: establishing patterns of abundance and distribution of organisms.

For traditional ecologists, there was no question about the identity of the organism at stake: in a given place, deer are deer and wolves are wolves. Not so for microbes, where a given organism can take multiple shapes for example filamentous fungi turning into yeasts and viceversa; spores of various kinds can lead to multiple variations on the hyphal theme, and so on , and indistinguishable cellular structures can belie quite different phylogenetic and ecological characters.

Their current attempt to deal with this problem is to develop methods and instrumentation to allow real mapping, at geographical scales, of microbial organisms, with DNA-sequence specificity. Research Expertise and Interest. Research Description.

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Ignacio Chapela

Ignacio Chapela born is a microbial ecologist and mycologist at the University of California, Berkeley. He is best known for a paper in Nature on the flow of transgenes into wild maize populations, [1] [2] as an outspoken critic of the University of California 's ties to the biotechnology industry, as well as a later dispute with the University over denial of tenure that Chapela argued was politically motivated. Chapela is also notable for his work with natural resources and indigenous rights. In the late s, Chapela completed his PhD dissertation research at Cardiff University on the ecology of microbial wood-rotting fungi. He continued research on a number of areas of fungal ecology through the s, as a visiting scholar at various research institutions, private companies, and NGOs , finally settling at UC Berkeley, where he has been on the faculty the Department of Environmental Sciences, Policy, and Management ESPM since

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Modified genes spread to local maize

Thank you for visiting nature. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser or turn off compatibility mode in Internet Explorer. In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript. A Nature Research Journal. Concerns have been raised about the potential effects of transgenic introductions on the genetic diversity of crop landraces and wild relatives in areas of crop origin and diversification, as this diversity is considered essential for global food security. Direct effects on non-target species 1 , 2 , and the possibility of unintentionally transferring traits of ecological relevance onto landraces and wild relatives have also been sources of concern 3 , 4.

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Journal Retracts Support for Claims of Invasive GM Corn

Investigating the sixty native varieties "landraces" of cultivated maize in the remote mountains of the Oaxaca Valley of Mexico, they encountered contamination by pollen from genetically modified corn. The GM-corn, originating in the U. The ecological and agricultural consequences of such contamination are worrisome. But just as unsettling is the way in which this study and its findings have been handled in the scientific and popular press. It's evident that the commercial interests of multinational companies are influencing what is supposed to be a scientific discussion. In Context 9 Spring, , pp.

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Transgenic DNA introgressed into traditional maize landraces in Oaxaca, Mexico

The Laboratory of Microbial Ecology is focused on a relatively small segment of the very large and disparate group of invisible life forms we call "microbes". They work with eukaryotic microbes, and are most focused on those eukaryotic microbes living in terrestrial ecosystems. That would mean the unwieldy and multifarious collection of life forms we call fungi. In those terrestrial ecosystems they ask simple questions: Where are microbes? How many of them? These are the basic questions of ecology: establishing patterns of abundance and distribution of organisms. For traditional ecologists, there was no question about the identity of the organism at stake: in a given place, deer are deer and wolves are wolves.

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