کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8387932 | 1543912 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Coelacanth-specific adaptive genes give insights into primitive evolution for water-to-land transition of tetrapods
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علوم زمین و سیاره ای (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Coelacanth-specific adaptive genes give insights into primitive evolution for water-to-land transition of tetrapods Coelacanth-specific adaptive genes give insights into primitive evolution for water-to-land transition of tetrapods](/preview/png/8387932.png)
چکیده انگلیسی
Coelacanth is a group of extant lobe-finned fishes in Sarcopterygii that provides evolutionary information for the missing link between ray-finned fish and tetrapod vertebrates. Its phenotypes, different from actinopterygian fishes, have been considered as primitive terrestrial traits such as cartilages in their fatty fins which are homologous with the humerus and femur. To investigate molecular evolution of coelacanth which led to its divergence into Sarcopterygii, we compared its protein coding sequences with 11 actinopterygian fishes. We identified 47 genes under positive selection specific to coelacanth, when compared to Holostei and Teleostei. Out of these, NCDN and 14 genes were associated with spatial learning and nitrogen metabolism, respectively. In homeobox gene superfamily, we identified coelacanth-specific amino acid substitutions, and also observed that one of replacements in SHOX was shared with extant tetrapods. Such molecular changes may cause primordial morphological change in the common ancestor of sarcopterygians. These results suggest that certain genes such as NCDN, MMS19, TRMT1, ALX1, DLX5 and SHOX might have played a role in the evolutionary transition between aquatic and terrestrial vertebrates.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Marine Genomics - Volume 38, April 2018, Pages 89-95
Journal: Marine Genomics - Volume 38, April 2018, Pages 89-95
نویسندگان
Chul Lee, Heesu Jeong, DongAhn Yoo, Eun Bae Kim, Bo-Hye Nam, Heebal Kim,