Аннотация
Исследовали уровень экспрессии генов тяжелой и легкой цепи миозина (myhc, mlc-2), транскрипционных факторов регуляции миогенеза (myf5, myog, паралогов myod1), паралогов миостатина и инсулиноподобных факторов роста (igf1 и igf2) в мышцах сеголеток лосося, искусственно выращиваемых при разных режимах освещения и кормления при постоянной температуре воды в регионе Северная Осетия-Алания. Совокупное действие режимов освещения и питания отражалось на экспрессии генов myhc, mlc-2, myf5, myod1a, myod1b, myod1c. Так особи, выращиваемые при постоянном режиме освещения, отличались более высокими уровнями экспрессии генов myf5, myhc и mlc-2 по сравнению с рыбами при естественном освещении, что так же соответствовало их темпам роста. Экспрессия генов IGF по-разному изменялась на протяжении эксперимента: уровень экспрессии гена igf1 увеличивался, а гена igf2 – сначала увеличивался через месяц исследования, затем уменьшался. Результаты свидетельствуют о различиях в процессах регуляции миогенеза в зависимости от условий освещения и кормления.
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