Long before trees or animals existed, these tiny communities were already at work. They helped fill Earth\u2019s atmosphere with oxygen. <\/p>\n Now, scientists think they may also explain how life moved from simple cells to the complex ones found in plants, animals, and humans today.<\/p>\n Hidden partnership comes into view<\/p>\n Deep within these living formations, researchers have found something unexpected \u2013 two microscopic organisms working together in a way that hints at how complex life first began. <\/p>\n It\u2019s not just coexistence. It\u2019s cooperation at a level that could have changed the course of evolution<\/a>.<\/p>\n This discovery didn\u2019t come easy. It took years of patient work, careful observation, and a bit of persistence. <\/p>\n But what scientists finally saw was worth the wait. They found a type of microbe physically connected to a bacterium through tiny tube-like structures. <\/p>\n These connections allowed the organisms to exchange essential materials, helping each other survive.<\/p>\n More than just a cradle of life<\/p>\n The research was led by Professor Brendan Burns, an evolutionary microbiologist at the University of New South Wales (UNSW Sydney<\/a>).<\/p>\n The team focused on stromatolites found in Shark Bay, a protected site in Western Australia where these ancient formations still grow today.<\/p>\n \u201cStromatolites could be more than \u2018just\u2019 a cradle of life where early microbial life flourished,\u201d said Professor Burns. \u201cThey could also tell us how complex life first emerged.\u201d<\/p>\n The team identified a previously unknown microbe belonging to a group called Asgard archaea<\/a>. <\/p>\n These organisms are thought to be closely related to the ancestors of eukaryotes, the complex cells that make up all visible life.<\/p>\n Simple but powerful partnership<\/p>\n For years, scientists have believed that complex cells formed when two simpler cells joined forces. <\/p>\n One cell likely engulfed the other, and instead of digesting it, the two formed a lasting partnership. This relationship eventually gave rise to mitochondria<\/a>, the part of the cell that produces energy.<\/p>\n What researchers lacked was direct evidence of how this kind of partnership actually looked in real life. That gap has now started to close.<\/p>\n \u201cThis could be a little model for how these kinds of partnerships started and ultimately formed eukaryotes,\u201d said Professor Burns.<\/p>\n The images captured during the study show the two microbes physically linked, exchanging nutrients like vitamins and hydrogen. <\/p>\n Each organism produced something the other needed. It was a simple but powerful system.<\/p>\n Years of trial and error<\/p>\n Getting to this point took time. \u201cIt took four or five years in the lab,\u201d said Professor Burns. \u201cA lot of time, optimizing and chasing different shadows.\u201d<\/p>\n One challenge stood out. The researchers couldn\u2019t grow the Asgard archaea on their own.<\/p>\n \u201cThe fact that we could never get these organisms into pure culture is probably because they always depend on other organisms to survive,\u201d noted Professor Burns.<\/p>\n That dependence may be the key. It suggests that cooperation isn\u2019t just helpful for these microbes. It may be essential.<\/p>\n Complex life from simple microbes<\/p>\n The breakthrough came with a powerful imaging method called electron cryotomography. This technique creates detailed 3D images at an incredibly small scale, down to a millionth of a millimeter.<\/p>\n Through this lens, scientists saw the fine connections between the microbes. They also observed tiny bubble-like structures and complex tube systems extending from the archaeon. <\/p>\n These features may play a role in how the organisms communicate and share resources.<\/p>\n Professor Debnath Ghosal from The University of Melbourne highlighted the significance of the research.<\/p>\n \u201cThis discovery brings us a few steps closer towards understanding how complex cells evolved from relatively simpler microbial life forms,\u201d said Professor Ghosal.<\/p>\n The study didn\u2019t stop at imaging. Researchers also turned to advanced computing to take a closer look at what\u2019s happening inside these microbes.<\/p>\n \u201cWe used this to predict the structures of proteins<\/a> in these microbes,\u201d said Professor Katharine A. Mitchie. \u201cAnd that\u2019s exciting because we can start to see ancient versions of the cellular machinery that later became central to complex life.\u201d<\/p>\n These findings suggest that some of the building blocks of modern cells were already taking shape billions of years ago, hidden inside these tiny partnerships.<\/p>\n A living link to the past<\/p>\n Professor Iain Duggin from the University of Technology Sydney<\/a> reflected on the bigger picture.<\/p>\n \u201cIt\u2019s if we have slowly arisen from the bottom of the sea,\u201d said Professor Duggin.<\/p>\n That idea isn\u2019t just poetic. It connects directly to the evidence. These microbes, living in harsh environments and relying on each other, may represent an early step in the path that led to all complex life.<\/p>\n The newly discovered archaeon has been named Nerearchaeum marumarumayae. The name combines a reference to an ancient Greek sea god with a word from the Malgana language, meaning \u201cancient home.\u201d<\/p>\n The naming process involved close consultation with local Indigenous communities, whose connection to the land stretches back around 30,000 years.<\/p>\n Life advanced through cooperation <\/p>\n The study points to a simple idea with big implications. Life didn\u2019t advance through isolation. It moved forward through cooperation.<\/p>\n \u201cPart of what makes this exciting is that it\u2019s not just discovery, but connection. Not just across many years, but at a time when these fragile ecosystems face mounting threats from climate change<\/a> and human activity,\u201d said Professor Burns. <\/p>\n \u201cThose microbes remind us that even the smallest partners can leave the deepest mark on our history.\u201d<\/p>\n The lesson feels clear. Even at the smallest scale, working together can shape the future in ways that last for billions of years.<\/p>\n The full study was published in the journal Current Biology<\/a>.<\/p>\n \u2014\u2013<\/p>\n Like what you read? Subscribe to our newsletter<\/a> for engaging articles, exclusive content, and the latest updates.<\/p>\n Check us out on EarthSnap<\/a>, a free app brought to you by Eric Ralls<\/a> and Earth.com.<\/p>\n \u2014\u2013<\/p>\n","protected":false},"excerpt":{"rendered":"Microbes built some of the oldest living things on Earth, but most people wouldn\u2019t notice them. They quietly…\n","protected":false},"author":2,"featured_media":390662,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[85,46,141],"class_list":{"0":"post-390661","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-science","8":"tag-il","9":"tag-israel","10":"tag-science"},"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/posts\/390661","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/comments?post=390661"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/posts\/390661\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/media\/390662"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/media?parent=390661"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/categories?post=390661"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/il\/wp-json\/wp\/v2\/tags?post=390661"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
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\n<\/a><\/p>\n![\"A](\"https:\/\/www.newsbeep.com\/il\/wp-content\/uploads\/2026\/04\/Asgard-archaeon_Nerearchaeum-marumarumayae_complex-life_Cell-Biology_1s.webp.webp\")
A composite image of the Asgard archaeon and structural features of Nerearchaeum marumarumayae cells. Credit: Current Biology. Click image to enlarge.A deeper look into ancient biology<\/p>\n