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Genetic divergence among Psidium accessions based on single nucleotide polymorphisms developed for Eucalyptus.
1Programa de Pós-graduação em Recursos Genéticos Vegetais, , , Brasil anne_tecnologa@hotmail.com.
Genetics and Molecular Research : GMR
|May 9, 2017
Summary
This study explored genetic diversity in Psidium species using Eucalyptus-developed SNPs. Results show reliable cross-species amplification, confirming SNP transferability within the Myrtaceae family.
Area of Science:
- Genetics
- Plant Science
- Bioinformatics
Background:
- Psidium species, including guava (P. guajava), are important globally.
- Understanding genetic diversity is crucial for crop improvement and conservation.
- Developing efficient genotyping methods for Psidium is essential.
Purpose of the Study:
- To analyze genetic divergence among Psidium species accessions.
- To assess the utility of single nucleotide polymorphism (SNP) markers developed for Eucalyptus in Psidium.
- To evaluate the transferability of Eucalyptus SNP markers to other Myrtaceae species.
Main Methods:
- Genotyping of 53 Psidium accessions (47 P. guajava) using the EUCHIP60K array.
- Phylogenetic analysis using dendrograms and Bayesian methods.
- Amplification of Psidium DNA using primers designed from Eucalyptus SNP sequences.
Main Results:
- Dendrogram analysis revealed similarity ranging from 0.58 to 1.00, with five distinct groups identified.
- Bayesian analyses suggested seven subpopulations, with additional groupings of guava accessions.
- SNP primers from Eucalyptus reliably amplified Psidium DNA, indicating successful marker transferability.
Conclusions:
- Single nucleotide polymorphism (SNP) markers developed for Eucalyptus are transferable and reliable for genotyping Psidium species.
- Genetic analyses using these markers align with the known biological structure of the Psidium genus.
- This approach facilitates genetic studies and breeding programs for Myrtaceae family members.
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