Bulked sample analysis in genetics, genomics and crop improvement

Area of Science:

• Genetics and Genomics
• Plant Breeding
• Bioinformatics

Background:

• Traditional biological assays rely on analyzing entire populations, which can be resource-intensive.
• Bulked sample analysis (BSA) offers a cost-effective alternative by analyzing pooled DNA samples.
• BSA has been applied in gene mapping, including bulked segregant analysis and pooled GWAS.

Purpose of the Study:

• To describe methods and procedures for sampling, bulking, and multiplexing in BSA.
• To discuss the factors influencing the power and effectiveness of BSA.
• To highlight the applications and future perspectives of BSA in genetics and crop improvement.

Main Methods:

• Pooling selected individuals from populations to form bulks.
• Analysis of pooled samples using individual markers, microarrays, and high-throughput sequencing (DNA, RNA, protein).
• Description of sampling, bulking, and multiplexing strategies.

Main Results:

• BSA significantly reduces the scale and cost compared to analyzing entire populations.
• The power of BSA is influenced by population size, selection strategy, sequencing, trait architecture, and marker density.
• BSA enables the analysis of diverse segregants and variants representing a wide phenotypic range.

Conclusions:

• Bulked sample analysis is a powerful and efficient approach for genetic studies.
• BSA facilitates advancements in plant breeding through marker development and marker-assisted selection.
• The methodology holds significant promise for future applications in genomics and crop improvement.