Articles tagged with Volvox
Researchers at Bielefeld University have identified five key characteristics of mitosis in the microalga Volvox carteri, including a porous nuclear envelope and crucial centrosome function. They used confocal laser scanning microscopy to capture high-resolution images of live cell division and gain insights into the complex process.
Scientists discovered that the anterior region of the alga is more sensitive to calcium ions than the posterior end, allowing for fine-tuned light-responsive motility. This finding advances our understanding of how multicellular organisms evolved to overcome single-celled limitations in photosynthesis.
A team of scientists has identified a master regulatory gene for sex determination in the green alga Volvox carteri, which shows how it evolved from a more primitive mating system in a close relative. The discovery may provide a possible blueprint for the origin of sexes in other multicellular organisms.
Researchers have sequenced the genome of Volvox carteri, a multicellular alga that captures light energy through photosynthesis. The study reveals surprising similarities and differences between the Volvox and Chlamydomonas genomes, shedding light on the evolution of multicellularity in these algae.
A global collaboration found that Volvox and Chlamydomonas algae share a common list of protein parts, suggesting limited innovation in the transition to multicellularity. Key discoveries include increased ECM proteins, cyclin D proteins, and novel gene functions.
Researchers at Salk Institute found that genetic region determining sex in green alga Volvox carteri has changed dramatically relative to its unicellular cousin Chlamydomonas reinhardtii. The team discovered new genes added to the expanded mating locus, which control male/female reproductive cell development.
Researchers at the University of Cambridge discovered 'dancing' algae, Volvox, that form stable groupings and exhibit unique waltzing and minuet patterns. The 'dance' is held together by fluid flows and induced attraction between colonies.
Researchers discovered that ancestors of Volvox algae transitioned to multicellularity at least 200 million years ago. This finding provides insights into the evolution of complex life forms, highlighting the importance of cooperation among cells in overcoming conflicts that hinder collective growth and reproduction.
Researchers found that flagella in algae allow for active nutrient gathering, concentrating nutrients just ahead of the moving colony. This discovery explains how single-celled life forms can evolve into larger multicellular organisms like Volvox, a colony of up to 50,000 cells.
In Volvox carteri, colonies become sexual when exposed to high temperatures, releasing pheromones to guarantee mating partners. This response is linked to the activation of the sex-inducer gene, which promotes the production of a pheromone in reaction to increased oxidants produced by free radicals.
Researchers David Kirk and Stephen Miller have discovered a transposon gene, called Jordan, in the green alga Volvox. This gene helps them isolate genes of interest to understand their form and function, shedding light on cell reproduction and specialized cells. The study has implications for human gene therapy and cancer research.