Organizing the evolutionary relationships of all life on earth proves much more difficult scientists must span enormous blocks of time and work with information from long extinct organisms trying to decipher the proper connections especially given the presence of homologies and analogies makes the task of building an accurate tree of life extraordinarily difficult add to that the . Evolutionary innovation continued throughout the rest of the phanerozoic eon and to have had a symbiotic relationship with fungi which formed arbuscular mycorrhizas literally tree like fungal roots in a well defined cylinder of cells ring in cross section in the cortex of its stems the fungi fed on the plants sugars in exchange for nutrients generated or extracted from the soil . Research interests host microbe interactions symbiosis bacterial genetics microbial eukaryotes microbial ecology marine microbiology evolutionary biology sarah m allard 2022 university of california san diego research interests environmental microbiology agricultural microbiomes food safety water quality water reuse. Accumulating knowledge and technological advancements have provided insights into many aspects of its evolutionary history and biology but have also raised concern about significant knowledge gaps surrounding distribution population sizes and trends the platypus distribution coincides with many of australias major threatening processes including highly regulated and disrupted rivers
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