홈페이지 방문을 환영합니다.
식물의 뿌리와 장내 미생물은 무서울 정도로 똑같다.
Plant root systems, which absorb nutrients and are directly exposed to soil microbes, are “functionally analogous to the animal gut,” according to Cara Haney of the University of British Columbia, Vancouver, and Frederick Ausubel of Harvard Medical School in Boston, Mass. Both plants and animals rely on wellconfıgured microbiomes to help retrieve nutrients and to defend against pathogens. However, nurturing benefıcial microbes while warding off those that might harm their hosts is no easy task. “Accomplishing it in similar ways is not necessarily surprising, given the same problems and same molecular toolbox,” says Haney, noting that the compositions of plant- and animal-associated microbiomes are determined by a combination of genetic and environmental factors. Plant microbiomes are largely assembled from the microbes in surrounding soils and, to a limited extent, by choosing through a hormone-dependent, genetically driven endeavor which among them will become companions. “When it comes to colonization by our own microbes, humans are not passive bystanders any more than plant roots are sticks in the mud,” she says. “The next exciting frontier is to use the many emerging model systems to uncover the molecular mechanisms that govern host associations with their microbial communities.” Diet is a dominant factor in shaping the gut microbial ecology of animals, with a minor but signifıcant contribution of individual genetics. Although this strategy is usually successful, it is one that could be backfıring for the one animal species— humans—that has recently developed a specialized high-fat, high-sugar, “fast-food” environment.