Sudden oak death research. Plant physiologist examining a culture of Phytophthora ramorum oomycetes,the microorganisms that cause sudden oak death. Oomycetes are a group of filamentous,unicellular organisms that physically resemble fungi. Sudden oak death kills oak and other species of tree and has had devastating effects on the oak populations in California and Oregon in the USA | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Greb, Peggy / US Department of Agriculture |
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