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反转录转座子对蓖麻基因组的影响。

The impact of retrotransposons on castor bean genomes.

作者信息

Kong Lin, Zhang Tingting, Ma Lei

机构信息

College of Life Science, Shihezi University, Shihezi, Xinjiang, China.

出版信息

Front Plant Sci. 2024 Jul 23;15:1397215. doi: 10.3389/fpls.2024.1397215. eCollection 2024.

DOI:10.3389/fpls.2024.1397215
PMID:39109065
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11300327/
Abstract

Castor bean ( L.) is an important oil crop. However, the influence of transposable elements (TEs) on the dynamics of castor bean evolution awaits further investigation. This study explored the role of transposable elements in the genomes of wild castor bean accessions from Ethiopia (Rc039) and Kenya (WT05) as well as in the cultivated variety (Hale). The distribution and composition of repeat sequences in these three lineages exhibited relative consistency, collectively accounting for an average of 36.7% of the genomic sequences. Most TE families displayed consistent lengths and compositions across these lineages. The dynamics of TEs significantly differed from those of genes, showing a lower correlation between the two. Additionally, the distribution of TEs on chromosomes showed an inverse trend compared to genes. Furthermore, Hale may have originated from the ancestor of Rc039. The divergent evolutionary paths of TEs compared to genes indicate the crucial role of TEs in shaping castor bean genetics and evolution, providing insights into the fields of castor bean and plant genomics research.

摘要

蓖麻（Ricinus communis L.）是一种重要的油料作物。然而，转座元件（TEs）对蓖麻进化动态的影响尚待进一步研究。本研究探讨了转座元件在来自埃塞俄比亚的野生蓖麻种质（Rc039）、肯尼亚的野生蓖麻种质（WT05）以及栽培品种（Hale）基因组中的作用。这三个谱系中重复序列的分布和组成表现出相对一致性，它们总共平均占基因组序列的36.7%。大多数TE家族在这些谱系中显示出一致的长度和组成。TEs的动态变化与基因的动态变化显著不同，两者之间的相关性较低。此外，TEs在染色体上的分布与基因呈现相反的趋势。此外，Hale可能起源于Rc039的祖先。与基因相比，TEs不同的进化路径表明TEs在塑造蓖麻遗传学和进化过程中起着关键作用，为蓖麻和植物基因组学研究领域提供了见解。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3428/11300327/8f6f00bafa8c/fpls-15-1397215-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3428/11300327/8fd33d02a197/fpls-15-1397215-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3428/11300327/7edc35ea648f/fpls-15-1397215-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3428/11300327/3df448b678ec/fpls-15-1397215-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3428/11300327/9ffd144e1262/fpls-15-1397215-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3428/11300327/4a5d4d0596a2/fpls-15-1397215-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3428/11300327/8f6f00bafa8c/fpls-15-1397215-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3428/11300327/8fd33d02a197/fpls-15-1397215-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3428/11300327/7edc35ea648f/fpls-15-1397215-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3428/11300327/3df448b678ec/fpls-15-1397215-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3428/11300327/9ffd144e1262/fpls-15-1397215-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3428/11300327/4a5d4d0596a2/fpls-15-1397215-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3428/11300327/8f6f00bafa8c/fpls-15-1397215-g006.jpg

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