Complete plastid genome sequences suggest strong selection for retention of photosynthetic genes in the parasitic plant genus <Emphasis Type="Italic">Cuscuta</Emphasis> |
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| Authors: | Joel R McNeal Jennifer V Kuehl Jeffrey L Boore Claude W de Pamphilis |
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| Institution: | (1) Department of Plant Biology, University of Georgia, Athens, GA 30602, USA;(2) Department of Biology, Huck Institutes of the Life Sciences, and Institute of Molecular Evolutionary Genetics, The Pennsylvania State University, University Park, Pennsylvania, 16802-5301, USA;(3) DOE Joint Genome Institute and Lawrence Berkeley National Laboratory, Walnut Creek, California 4598, USA;(4) Genome Project Solutions, Hercules, CA 94547, USA |
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| Abstract: | Background Plastid genome content and protein sequence are highly conserved across land plants and their closest algal relatives. Parasitic
plants, which obtain some or all of their nutrition through an attachment to a host plant, are often a striking exception.
Heterotrophy can lead to relaxed constraint on some plastid genes or even total gene loss. We sequenced plastid genomes of
two species in the parasitic genus Cuscuta along with a non-parasitic relative, Ipomoea purpurea, to investigate changes in the plastid genome that may result from transition to the parasitic lifestyle. |
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