Science, Space and Technology News 2023
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“In its simplest form, the gastrula develops from a hollow sphere of cells, the blastula, forming a larval stage with gut and mouth; imagine pushing a ball inwards at one side. All animals pass through this gastrula stage, which could also have existed at the beginning of animal evolution,” explains Prof. Holstein, a development and evolutionary biologist at the Centre for Organismal Studies at Ruperto Carola.
“Corals live in nutrient-poor waters and as larvae or young polyps, take up symbiotic algae cells. In Aiptasia, however, this process is important for adults but does not lead to growth and settlement of the larvae, suggesting that nutrition is a critical step in closing the life cycle,” states Thomas Holstein.Laboratory studies of the nutritional conditions showed that the food for the tiny Aiptasia larvae had to be small enough and alive.
Dr. Elizabeth Hambleton, a participating researcher from the University of Vienna , stresses: “By thus closing the life cycle of Aiptasia, it will finally be possible to carry out necessary molecular genetic experiments required for functional studies on this key endosymbiotic model organism.”
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