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Deciphering codon usage patterns in six Quercus genome

delete2025-12-17
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张雨洋 封面图
张雨洋 (Yuyang Zhang)
Y
Yunqi Ma
J
Jian Gao *
T
Tao Yu *
DOI:10.1007/s42452-025-07917-ydelete
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摘要

摘要

En 中文
密码子使用偏性(CUB)影响翻译效率和准确性,但栎属(约450种生态重要物种)的基因组范围CUB模式尚未被表征,先前的研究仅限于叶绿体基因组。本研究利用生物信息学工具,对6个栎属物种(Q. acutissima、Q. suber、Q. dentata、Q. robur、Q. lobata、Q. mongolica)进行了首次全基因组CUB分析。我们计算了有效密码子数量(ENC)、同义密码子相对使用率(RSCU)和GC含量,并应用了中性图、平衡图(PR2)、ENC-GC3s图以及翻译选择(P2)分析。结果显示,基因组GC含量范围为42.25%(Q. robur)至46.2%(Q. suber),ENC值(51.777–52.843)表明存在弱CUB。多方法分析证实自然选择是CUB的主要驱动因素(突变压力影响较小)。所有6个物种均优先使用AGA(精氨酸)、UCU(丝氨酸)和CCA(甘氨酸)。本研究填补了栎属基因组研究的空白,阐明了CUB的进化驱动因素,并识别了保守的偏好密码子——为栎属分子育种和转基因优化提供了基础。
Keyword:
Quercus
Codon usage bias
Natural selection
Evolution
RSCU
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Discover Applied Sciences
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College of Horticulture and Forestry Sciences
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baotou teachers college
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