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Hydra viridissima is a species of cnidarian which is commonly found in still or slow-moving freshwater [2] in the Northern temperate zone. Hydra viridissima is commonly called green hydra due to its coloration, which is due to the symbiotic green algae Chlorella vulgaris which live within its body. [ 3 ]
A draft of the genome of Hydra magnipapillata was reported in 2010. [30] The genomes of cnidarians are usually less than 500 Mb in size, as in the Hydra viridissima, which has a genome size of approximately 300 Mb. In contrast, the genomes of brown hydras are approximately 1 Gb in size.
Starting in 2006, it was recognized that the German strain may have two bacterial symbionts, one pink, one green. In 2021, both symbionts were confirmed to be photosynthetic: a Chlorella sp. K10 (green algae), discovered earlier as a symbiont of Hydra viridissima; and Ca.
The well-known freshwater polyp Hydra viridissima, formerly placed in the Capitata, belongs to the Aplanulata. Polyorchis karafutoensis , a true member of the Capitata, on a 1995 stamp from Azerbaijan .
Hydra oligactis; Hydra viridissima; Hydra vulgaris; T. Transgenic hydra This page was last edited on 27 September 2021, at 19:27 (UTC). Text is available under ...
Hydra polyps are small and transparent which makes it possible to trace single cells in vivo. In addition, transgenic Hydra provide a ready system for generating gain-of-function phenotypes. With the use of transgenes producing dominant-negative versions of proteins , one should be able to obtain loss-of-function phenotypes as well.
Saccharomyces cerevisiae was the first eukaryotic organism to have its complete genome sequence determined.. This list of "sequenced" eukaryotic genomes contains all the eukaryotes known to have publicly available complete nuclear and organelle genome sequences that have been sequenced, assembled, annotated and published; draft genomes are not included, nor are organelle-only sequences.
Green algae are also found symbiotically in the ciliate Paramecium, and in Hydra viridissima and in flatworms. Some species of green algae, particularly of genera Trebouxia of the class Trebouxiophyceae and Trentepohlia (class Ulvophyceae), can be found in symbiotic associations with fungi to form lichens. In general the fungal species that ...