{"title":"Assessment of Genetic Variability and Population Structure of Betula utilis subsp. jacquemontii in the Western Himalayan Region of India","authors":"Harish Chandra Singh, Vandana Tiwari, Narender Kumar, Tikam Singh Rana","doi":"10.1007/s10528-025-11032-3","DOIUrl":null,"url":null,"abstract":"<div><p><i>Betula utilis</i> subsp. <i>jacquemontii</i> (Spach) Ashburner & McAll. is a medicinally and ecologically important tree species in the Western Himalayan Region (WHR) of India. Estimation of genetic variability and population structure of 11 populations of <i>B. utilis</i> subsp. <i>jacquemontii</i> in the WHR were carried out using 15 ISSR and 10 DAMD markers. The cumulative analyses of the markers (ISSR + DAMD) revealed a moderate level (49.47%) of polymorphism at the species level. Khilanmarg, Gangotri, and Khaliya top populations showed the highest polymorphism, while the Bhyundar Valley and Chatru-Kaza road populations showed the lowest polymorphism across 11 populations. Mantel test revealed a positive correlation between pair-wise genetic and geographical distances in wild populations of <i>B. utilis</i> subsp. <i>jacquemontii</i> in the WHR. The AMOVA analysis showed that majority of variation of the species exists among populations (54%), followed by within populations (20%). The clustering pattern obtained from UPGMA, PCoA, and STRUCTURE analyses revealed that 11 natural populations of <i>B. utilis</i> subsp. <i>jacquemontii</i> separated into two distinct genetic clusters. The genetic differentiation is notably high (<i>G</i><sub>ST</sub> = 0.74) among populations with a low gene flow (N<i>m</i> = 0.16), which could be attributed to geographic isolation, high mountain ranges, regional climatic conditions, and habitat destruction in the WHR. The genetically diverse populations recognized in this study could be a valuable genetic resource for conservation and management of this important timberline tree species.</p></div>","PeriodicalId":482,"journal":{"name":"Biochemical Genetics","volume":"64 1","pages":"504 - 523"},"PeriodicalIF":1.6000,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Biochemical Genetics","FirstCategoryId":"99","ListUrlMain":"https://link.springer.com/article/10.1007/s10528-025-11032-3","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"BIOCHEMISTRY & MOLECULAR BIOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
Betula utilis subsp. jacquemontii (Spach) Ashburner & McAll. is a medicinally and ecologically important tree species in the Western Himalayan Region (WHR) of India. Estimation of genetic variability and population structure of 11 populations of B. utilis subsp. jacquemontii in the WHR were carried out using 15 ISSR and 10 DAMD markers. The cumulative analyses of the markers (ISSR + DAMD) revealed a moderate level (49.47%) of polymorphism at the species level. Khilanmarg, Gangotri, and Khaliya top populations showed the highest polymorphism, while the Bhyundar Valley and Chatru-Kaza road populations showed the lowest polymorphism across 11 populations. Mantel test revealed a positive correlation between pair-wise genetic and geographical distances in wild populations of B. utilis subsp. jacquemontii in the WHR. The AMOVA analysis showed that majority of variation of the species exists among populations (54%), followed by within populations (20%). The clustering pattern obtained from UPGMA, PCoA, and STRUCTURE analyses revealed that 11 natural populations of B. utilis subsp. jacquemontii separated into two distinct genetic clusters. The genetic differentiation is notably high (GST = 0.74) among populations with a low gene flow (Nm = 0.16), which could be attributed to geographic isolation, high mountain ranges, regional climatic conditions, and habitat destruction in the WHR. The genetically diverse populations recognized in this study could be a valuable genetic resource for conservation and management of this important timberline tree species.
期刊介绍：
Biochemical Genetics welcomes original manuscripts that address and test clear scientific hypotheses, are directed to a broad scientific audience, and clearly contribute to the advancement of the field through the use of sound sampling or experimental design, reliable analytical methodologies and robust statistical analyses.
Although studies focusing on particular regions and target organisms are welcome, it is not the journal’s goal to publish essentially descriptive studies that provide results with narrow applicability, or are based on very small samples or pseudoreplication.
Rather, Biochemical Genetics welcomes review articles that go beyond summarizing previous publications and create added value through the systematic analysis and critique of the current state of knowledge or by conducting meta-analyses.
Methodological articles are also within the scope of Biological Genetics, particularly when new laboratory techniques or computational approaches are fully described and thoroughly compared with the existing benchmark methods.
Biochemical Genetics welcomes articles on the following topics: Genomics; Proteomics; Population genetics; Phylogenetics; Metagenomics; Microbial genetics; Genetics and evolution of wild and cultivated plants; Animal genetics and evolution; Human genetics and evolution; Genetic disorders; Genetic markers of diseases; Gene technology and therapy; Experimental and analytical methods; Statistical and computational methods.
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