{"id":2270,"date":"2026-09-26T01:12:00","date_gmt":"2026-09-25T16:12:00","guid":{"rendered":"https:\/\/onepress.co.kr\/index.php\/briefing\/2026-09-26-fire-amoeba-en\/"},"modified":"2026-09-26T01:12:00","modified_gmt":"2026-09-25T16:12:00","slug":"2026-09-26-fire-amoeba-en","status":"publish","type":"briefing","link":"https:\/\/onepress.co.kr\/index.php\/briefing\/2026-09-26-fire-amoeba-en\/","title":{"rendered":"A \u201cfire amoeba\u201d divided at 63\u00b0C, raising the heat record for eukaryotes"},"content":{"rendered":"

2026-09-26 01:12 KST<\/strong><\/p>\n

Incendiamoeba cascadensis grew best at 55\u201357\u00b0C and still completed cell division at 63\u00b0C.<\/p>\n

It moved at 64\u00b0C but stopped dividing; after five minutes at 70\u00b0C it recovered when cooled, while exposure to 80\u00b0C was fatal.<\/p>\n

Why 63\u00b0C is a record<\/h2>\n

Eukaryotes have a nucleus and internal cellular machinery. The previous growth ceiling was about 60\u00b0C in some fungi and red algae, so the result raises the replication limit rather than merely showing survival.<\/p>\n

How it copes remains incomplete<\/h2>\n

Positively charged protein surfaces and membrane chemistry may improve heat stability. Experiments must still identify which changes are essential and whether close relatives share them.<\/p>\n

\"A
This AI-generated image explains the topic; it is not a photograph of an actual event, observation or field site.<\/figcaption><\/figure>\n

Do not jump straight to alien life<\/h2>\n

Temperature alone does not make a habitat. Acidity, oxygen, pressure, water, food and an ecosystem also matter, and Earth remains the only world known to host life.<\/p>\n

What comes next<\/h2>\n

Related DNA appears in geothermal datasets from New Zealand and Yellowstone, but living cells have not been isolated there. Cultures and functional tests will define the record\u2019s range and evolution.<\/p>\n

Primary source and independent checks<\/h2>\n

Primary source: Cell paper<\/a><\/p>\n

Institutional explanation: NASA Science<\/a><\/p>\n

Independent check: Science News independent report<\/a><\/p>\n

Read in other languages<\/h2>\n

\ud55c\uad6d\uc5b4<\/a> \u00b7 English<\/a> \u00b7 Espa\u00f1ol<\/a> \u00b7 \u65e5\u672c\u8a9e<\/a> \u00b7 Ti\u1ebfng Vi\u1ec7t<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

A new amoeba from a California hot spring ate and divided at 63\u00b0C, raising the known growth limit for eukaryotic life. It briefly survived 70\u00b0C in a dormant state, but this does not prove extraterrestrial life or survival by all complex organisms.<\/p>\n","protected":false},"featured_media":0,"template":"","meta":[],"class_list":["post-2270","briefing","type-briefing","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/onepress.co.kr\/index.php\/wp-json\/wp\/v2\/briefing\/2270","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/onepress.co.kr\/index.php\/wp-json\/wp\/v2\/briefing"}],"about":[{"href":"https:\/\/onepress.co.kr\/index.php\/wp-json\/wp\/v2\/types\/briefing"}],"wp:attachment":[{"href":"https:\/\/onepress.co.kr\/index.php\/wp-json\/wp\/v2\/media?parent=2270"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}