Simple Sequence Repeats (SSRs) and Telomeric Analysis in Somatic Organs of Reproductive and Non-Reproductive Castes of Termite <i>Reticulitermes chinensis</i>
The study of <i>Reticulitermes chinensis</i> offers valuable insights into insect aging and longevity, focusing on telomere biology and simple sequence repeats (SSRs). Telomeres, the protective cap at chromosome ends, are often linked to cellular aging and lifespan. Through transcriptomi...
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2025-02-01
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| author | Haroon Zahid Khan Wasim Javaid Lian-Xi Xing |
| author_facet | Haroon Zahid Khan Wasim Javaid Lian-Xi Xing |
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| description | The study of <i>Reticulitermes chinensis</i> offers valuable insights into insect aging and longevity, focusing on telomere biology and simple sequence repeats (SSRs). Telomeres, the protective cap at chromosome ends, are often linked to cellular aging and lifespan. Through transcriptomic analysis using the RepeatExplorer tool, a total of 10,740 SSR loci were identified, encompassing di-, tri-, tetra-, penta-, and hexa-nucleotide motifs. Among these, tri-nucleotide repeats were the most prevalent (2702), with prominent motifs including AC/GT (21.91%), AAG/CTT (8.49%), and AGC/CTG (8.2%). The identified SSRs serve as valuable genetic markers for taxonomy, phylogenetic, and population genetics. A telomeric sequence array featuring the TTAGG repeat motif was also discovered, with fluorescence in situ hybridization (FISH) confirming its localization at chromosome ends. Telomere lengths <i>R. chinensis</i> ranged from tens to hundreds of kilobases but showed no significant correlation with lifespan differences among termite castes. All castes had the same telomere length. This finding suggests that <i>R. chinensis</i> may possess a unique telomere maintenance mechanism, decoupling telomere length from aging and challenging the conventional view that shorter telomeres are indicative aging. It is hypothesized that telomerase activity plays a critical role in preserving telomere integrity in this species. These findings underscore the complexity and evolutionary adaptations of telomere biology in social insects. Moreover, the variation and organization of SSRs in <i>R. chinensis</i> provide a rich genetic resource for genome mapping, evolutionary research, and population genetics. This study sheds light on telomere dynamics and genetic diversity in termites, opening new pathways for research in evolutionary biology and the molecular mechanisms of aging. |
| format | Article |
| id | doaj-art-159761404bb2496eb0f73b555e14ddc2 |
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| spelling | doaj-art-159761404bb2496eb0f73b555e14ddc22025-08-20T02:44:52ZengMDPI AGBiology2079-77372025-02-0114216610.3390/biology14020166Simple Sequence Repeats (SSRs) and Telomeric Analysis in Somatic Organs of Reproductive and Non-Reproductive Castes of Termite <i>Reticulitermes chinensis</i>Haroon0Zahid Khan1Wasim Javaid2Lian-Xi Xing3College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, ChinaCollege of Life Sciences, Northwest University, Xi’an 710069, ChinaCollege of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, ChinaCollege of Life Sciences, Northwest University, Xi’an 710069, ChinaThe study of <i>Reticulitermes chinensis</i> offers valuable insights into insect aging and longevity, focusing on telomere biology and simple sequence repeats (SSRs). Telomeres, the protective cap at chromosome ends, are often linked to cellular aging and lifespan. Through transcriptomic analysis using the RepeatExplorer tool, a total of 10,740 SSR loci were identified, encompassing di-, tri-, tetra-, penta-, and hexa-nucleotide motifs. Among these, tri-nucleotide repeats were the most prevalent (2702), with prominent motifs including AC/GT (21.91%), AAG/CTT (8.49%), and AGC/CTG (8.2%). The identified SSRs serve as valuable genetic markers for taxonomy, phylogenetic, and population genetics. A telomeric sequence array featuring the TTAGG repeat motif was also discovered, with fluorescence in situ hybridization (FISH) confirming its localization at chromosome ends. Telomere lengths <i>R. chinensis</i> ranged from tens to hundreds of kilobases but showed no significant correlation with lifespan differences among termite castes. All castes had the same telomere length. This finding suggests that <i>R. chinensis</i> may possess a unique telomere maintenance mechanism, decoupling telomere length from aging and challenging the conventional view that shorter telomeres are indicative aging. It is hypothesized that telomerase activity plays a critical role in preserving telomere integrity in this species. These findings underscore the complexity and evolutionary adaptations of telomere biology in social insects. Moreover, the variation and organization of SSRs in <i>R. chinensis</i> provide a rich genetic resource for genome mapping, evolutionary research, and population genetics. This study sheds light on telomere dynamics and genetic diversity in termites, opening new pathways for research in evolutionary biology and the molecular mechanisms of aging.https://www.mdpi.com/2079-7737/14/2/166<i>Reticulitermes chinensis</i>FISHSSRstelomereaging |
| spellingShingle | Haroon Zahid Khan Wasim Javaid Lian-Xi Xing Simple Sequence Repeats (SSRs) and Telomeric Analysis in Somatic Organs of Reproductive and Non-Reproductive Castes of Termite <i>Reticulitermes chinensis</i> Biology <i>Reticulitermes chinensis</i> FISH SSRs telomere aging |
| title | Simple Sequence Repeats (SSRs) and Telomeric Analysis in Somatic Organs of Reproductive and Non-Reproductive Castes of Termite <i>Reticulitermes chinensis</i> |
| title_full | Simple Sequence Repeats (SSRs) and Telomeric Analysis in Somatic Organs of Reproductive and Non-Reproductive Castes of Termite <i>Reticulitermes chinensis</i> |
| title_fullStr | Simple Sequence Repeats (SSRs) and Telomeric Analysis in Somatic Organs of Reproductive and Non-Reproductive Castes of Termite <i>Reticulitermes chinensis</i> |
| title_full_unstemmed | Simple Sequence Repeats (SSRs) and Telomeric Analysis in Somatic Organs of Reproductive and Non-Reproductive Castes of Termite <i>Reticulitermes chinensis</i> |
| title_short | Simple Sequence Repeats (SSRs) and Telomeric Analysis in Somatic Organs of Reproductive and Non-Reproductive Castes of Termite <i>Reticulitermes chinensis</i> |
| title_sort | simple sequence repeats ssrs and telomeric analysis in somatic organs of reproductive and non reproductive castes of termite i reticulitermes chinensis i |
| topic | <i>Reticulitermes chinensis</i> FISH SSRs telomere aging |
| url | https://www.mdpi.com/2079-7737/14/2/166 |
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