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Internal Transcribed Spacer (ITS) regions: A powerful tool for analysis of the diversity of wheat genotypes

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Title Internal Transcribed Spacer (ITS) regions: A powerful tool for analysis of the diversity of wheat genotypes
 
Creator Ahmadi, Hasan
Solouki, Mahmood
Fazeli-Nasab, Bahman
Heidari, Forozan
Sayyed, RZ
 
Subject dN/dS ratio
Haplotype
Nucleotide Diversity
Singleton
Triticum aestivum
 
Description 137-143
Wheat is a widely cultivated crop and it is one of the major food sources worldwide. Among the various tools used to study diversity of wheat species, the internal transcribed spacer (ITS) assessment emerges to be the more appropriate approach. In the present study, we evaluated 15 genotypes of Iranian wheat cultivars (wild, native, and breed) using ITS gene sequences. Similarity matrices and dendrogram of phylogenic relationship were constructed using Mega ver6 software. We report the major nucleotide changes in the same position between diploid and hexaploid species. dN/dS ratio for diploid, tetraploid, and hexaploid species indicated a pure selection in the examined gene, with no key changes in the genes, and 91% ITS diversity within individual wheat was evident. The results suggest that as evolution moves forward, nucleotide changes are reduced so that only a few changes in nucleotides occur. ITS marker can distinguish different wheat genotypes at the genomic level and thus prove to be the most appropriate assessment tool for analyzing inter and intra-species relationships.
 
Date 2022-01-31T10:21:21Z
2022-01-31T10:21:21Z
2022-02
 
Type Article
 
Identifier 0975-1009 (Online); 0019-5189 (Print)
http://nopr.niscair.res.in/handle/123456789/59002
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJEB Vol.60(02) [Feb 2022]