{"id":1408,"date":"2024-09-15T17:23:06","date_gmt":"2024-09-15T17:23:06","guid":{"rendered":"https:\/\/natharatmouchrika.net\/home\/?p=1408"},"modified":"2024-09-15T17:23:06","modified_gmt":"2024-09-15T17:23:06","slug":"mystery-microbes-have-been-lurking-unsuspected-in-most-coral-species","status":"publish","type":"post","link":"https:\/\/natharatmouchrika.net\/home\/?p=1408","title":{"rendered":"Mystery microbes have been lurking unsuspected in most coral species"},"content":{"rendered":"
\n

It\u00a0has long been known that coral polyps\u00a0harbour algal symbionts<\/a>\u00a0that make most of their food. Now it has been shown that corals can also harbour microbes that appear to be parasites but don\u2019t seem to harm their hosts.<\/p>\n

\u201cThe fact that we could go out to a coral reef, which is probably the best studied marine environment, and specifically look at the coral, which is the best studied part of that environment, and find a parasite that infects virtually every species of coral we\u2019ve looked at, that no one had ever really noticed, blows my mind,\u201d says\u00a0Patrick Keeling<\/a>\u00a0at the University of British Columbia in Canada. \u201cHow much out there that is still unknown is bewildering sometimes.\u201d<\/p>\n

The organelle that carries out\u00a0photosynthesis<\/a>\u00a0inside plant cells has its own tiny genome. A group of single-celled parasites \u2013\u00a0including malaria<\/a>\u00a0\u2013 that evolved from algae still have relics of this organelle and its genome. Similar sequences had turned up in so-called metagenomic studies of corals but were thought to be contaminants or belong\u00a0to bacteria<\/a>.<\/p>\n

<\/div>\n

Around a decade or so ago, Keeling and his colleagues realised that these sequences actually belonged to a previous unknown group of single-celled organisms with complex cells, unlike bacteria. The team has gone on to find and isolate these organisms, dubbed corallicolids.<\/p>\n

They don\u2019t obviously harm corals but are almost certainly parasites, says Keeling. \u201cIt\u2019s really hard to see how they could be beneficial,\u201d he says.<\/p>\n

What is\u00a0most mystifying<\/a>\u00a0is that that corallicolids appear to make a little chlorophyll that can capture light energy but have lost the apparatus for using that energy to make food. This captured energy can damage cells if there is no way to exploit it \u2013 it is like having a bomb inside a cell with no way to defuse it, says Keeling.<\/p>\n

<\/div>\n

\u201cIt\u2019s hard to describe how mind-boggling it is,\u201d he says. \u201cBiochemists just flat out refuse to believe it.\u201d<\/p>\n

 <\/p>\n

Metagenomic studies suggest that the corallicolids are just one of 10 previously unknown groups of organisms on coral reefs, and Keeling thinks there are many more groups waiting to be discovered.<\/p>\n

The diversity of complex-celled microbes such as the corallicolids\u00a0is massively underestimated<\/a>, he says, because it is hard to distinguish their genes from those of multicellular animals.<\/p>\n

Journal reference:\u00a0PLOS Pathogens<\/em>,\u00a0DOI: 10.1371\/journal.ppat.1009845<\/a><\/p>\n

Link :\u00a0https:\/\/www.newscientist.com\/article\/2290530-mystery-microbes-have-been-lurking-unsuspected-in-most-coral-species\/<\/a><\/p>\n<\/div>\n

<\/div>\n
<\/div>\n","protected":false},"excerpt":{"rendered":"

It\u00a0has long been known that coral polyps\u00a0harbour algal symbionts\u00a0that make most of their food. Now it has been shown that corals can also harbour microbes that appear to be parasites but don\u2019t seem to harm their hosts. \u201cThe fact that we could go out to a coral reef, which is probably the best studied marine …<\/p>\n","protected":false},"author":1,"featured_media":1409,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[50],"tags":[],"class_list":["post-1408","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-science"],"yoast_head":"\nMystery microbes have been lurking unsuspected in most coral species - \u0645\u0648\u0642\u0639 \u0646\u0638\u0631\u0627\u062a \u0645\u0634\u0631\u0642\u0629<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/natharatmouchrika.net\/home\/?p=1408\" \/>\n<meta property=\"og:locale\" content=\"ar_AR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Mystery microbes have been lurking unsuspected in most coral species\" \/>\n<meta property=\"og:description\" content=\"It\u00a0has long been known that coral polyps\u00a0harbour algal symbionts\u00a0that make most of their food. 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