آکادمی میکروب‌شناسی ایران | United States America (US)

Create: 2025-05-19 Update: 2025-07-09 20:48:44

✨ باکتری‌هایی مغناطیسی با رفتار چندسلولی!
🦠 پژوهشی با پشتیبانی ناسا به بررسی گروه خاصی از باکتری‌ها پرداخته که به گونه‌ای متفاوت زندگی می‌کنند، آن‌ها گویی یک ارگانیسم چندسلولی کامل‌اند! این باکتری‌ها با نام باکتری‌های مغناطیسی چندسلولی (MMB) شناخته می‌شوند و تنها نمونه‌ی شناخته‌شده‌ از باکتری‌هایی هستند که «چندسلولی اجباری» خوانده می‌شوند.

☆ سلول‌های MMB به‌تنهایی قادر به زنده ماندن نیستند و تنها در خوشه‌هایی هماهنگ از سلول‌ها می‌توانند بقا داشته‌باشند؛ خوشه‌هایی که همزمان تقسیم می‌شوند، نقش‌های متابولیکی و ژنتیک متفاوت دارند و مانند بافت‌های یک بدن عمل می‌کنند اما عملکردهای مکمل دارند.

🧲 اما ویژگی خارق‌العاده‌ی دیگر این باکتری‌ها، قابلیت جهت‌یابی با میدان مغناطیسی زمین است. هر سلول، ساختاری شبیه به سوزن قطب‌نما درون خود دارد که آن را به گروه نادری از باکتری‌های مغناطیسی‌ پیوند می‌زند.

★ این ویژگی‌ها می‌تواند در شرایط محیطی بسیار خاص، مزیت بقا ایجاد کند و مدلی زنده برای فهم مراحل اولیه تکامل حیات در سیارات دیگر باشند.
⇲ NASA Astrobiology

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آکادمی میکروب‌شناسی ایران

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☆ سلول‌های MMB به‌تنهایی قادر به زنده ماندن نیستند و تنها در خوشه‌هایی هماهنگ از سلول‌ها می‌توانند بقا داشته‌باشند؛ خوشه‌هایی که همزمان تقسیم می‌شوند، نقش‌های متابولیکی و ژنتیک متفاوت دارند و مانند بافت‌های یک بدن عمل می‌کنند اما عملکردهای مکمل دارند.

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Cryptoassets enthusiasts use this application for their trade activities, and they may make donations for this cause.If somehow Telegram do run out of money to sustain themselves they will probably introduce some features that will not hinder the rudimentary principle of Telegram but provide users with enhanced and enriched experience. This could be similar to features where characters can be customized in a game which directly do not affect the in-game strategies but add to the experience.

✨ باکتری‌هایی مغناطیسی با رفتار چندسلولی!

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