The scientific researchers are surprised that bacteria can act as a single cell marine creature’s aphrodisiac, and marine life, can be regarded as the most pro-animal “close relatives”. This is a precedent for known bacteria to promote eukaryotic mating, and eukaryotes include all plants and animals.
These marine creatures are native and belong to collar whip. They eat bacteria, but also krill such a small marine animal food.
Vibrio sibiricus promotes the aggregation and mating of single-celled marine life-catchworms. Tubulin is marked as blue, showing unique organic
A few years ago, the University of California at Berkeley (University & nbsp; of & nbsp; California) , Berkeley, professor of molecular and cell biology at Nicole. Gold (Nicole & nbsp; King), but also Howard. Researchers at the Hughes Medical Research Institute, she found that some bacteria would make these single-cell shoots grow into multicellular populations.
This new hairstyle shows that the flagellates will secretly “observe” certain bacteria to understand their own living environment, thereby regulating their activities.
This finding may help to reveal how humans and other animals have evolved from single-celled organisms over the past 600 million years.
A distinctive bacterium causes the formation of multicellular roses, and this “rosette” is composed of a single cell that splits multiple times.
In this case, the biologically glowing marine bacteria Vibrio & apos; s fischeri promoted the aggregation and mating of the rose-shaped flagellates. Of course, mating is sometimes due to changes in the environment. Gold says: “
Many theories agree with the idea that creatures will mate in situations where external stress is large and that genetic information can be recombined by sexual reproduction Like shuffling.
& nbsp; We are expected to have a new allele combination, and this combination may have a greater adaptability to the imminent situation, so that this creature can better in this new “Bacteria are very good at integrating a lot of information about the environment, because different types of bacteria have different nutritional needs, and the flagellates may be the bacteria as an environment,” she said. Conditional representation or a real-time indicator to determine the next moment of the environment in order to make better preparations. “
The mating problem of whipworms has always been a mystery, and even before Do not know whether they are sexual reproduction.
Insects more rapid response, in just a few hours there is a lot of cell mating. “The whipworms have great flexibility in their lifecycles, and they can carry out asexual reproduction, but now we find that they can also have sexual reproduction,” said Kim. , And this sexual reproduction can be triggered by exposure to one hour in the bacteria. “
This new finding suggests that other creatures, including some because it can not mate, We may be able to help them complete mating through some bacteria “aphrodisiacs”. “There is a possibility that these animals may need some special incentives from environmental bacteria, and these incentives are often not available in the laboratory.”
<123 University of California, Berkeley graduate student Ariel. Wortnica found that these bacteria caused a single cell aggregation, so they and Harvard Medical School (Harvard & nbsp; Medical & nbsp; School) Jon. The Krabi Laboratory (Jon & nbsp; Clardy's & nbsp; lab) worked together to keep track of this trigger – a protein that is often secreted by bacteria called EroS.
They found that EroS is a chondroitinase that breaks down a specific type of sulfate molecule that can be found in the extracellular matrix of the rosetail, which was previously thought Is unique to animals. If the function of this enzyme is inhibited, single cells do not accumulate. Of course, chondroitinase from other aquatic bacteria also produces this effect of promoting mating. When they study the working mechanism of EroS, they will also continue to explore the relationship between bacteria and chondroitinaseInteraction.
So what is the impact of this study on animals? Such as humans and their bacterial partners – so-called microbes. “For example, we hope that we can understand some of the key biomolecules by studying simple insects and then look at the complex environment in which intestinal microbes are located to see if these biomolecules are also present in this environment.”
Harvard Medical School postdoctoral researcher Joseph. “I think that by showing a new type of bacterial-induced behavior, we can inspire others to do the same in their own research system,” said Joseph Gerdt, co-author of the study. To see if they may not have noticed the role of the relevant bacteria. “
The National Institutes of Health (Institut & nbsp; Institates & nbsp; of & nbsp; Health) funded the study, which published the results In the “cell” (Cell) magazine.