Sequencing to improve breeding and selection

Understanding how genetic and epigenetic factors contribute to traits in plants and animals

Plant and Animal Sequencing

As sequencing costs continue to decline, plant and animal sequencing is becoming a more common approach in agricultural research. Next-generation sequencing (NGS) is especially useful in this field, where plant and animal genomes can be complex and prior knowledge scarce. Sequencing species of interest provides detailed information about genetic variation and how these factors influence traits.

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De Novo Plant and Animal Sequencing

Whether a research project is focused on a novel species or one that has never been investigated before using genetic tools, de novo sequencing is a first step toward understanding the genetic underpinnings of a plant or animal’s functions and its interaction with the environment. With long-paired and mate-pair sequence data, some researchers use the assembled genome to assign map positions and stack diverse breed information for subsequent resequencing to discover single nucleotide polymorphisms (SNPs) and other genetic variations.

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Whole-Genome Resequencing

When a species’ reference genome is available, whole-genome animal and plant sequencing is an efficient approach for discovering genes, SNPs, and structural variants, while simultaneously determining genotypes. Information from these studies will fill in the gaps that exist in the genetic maps of many plant and animal species, improving plant breeding and selection, and enabling definitive comparative genomic analyses within and across species.

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Plant and Animal Transcriptome Sequencing

RNA sequencing is revolutionizing the exploration of gene expression in plants and animals, providing novel insights into changing expression levels that occur in development and during disease and stress conditions. It can be used to elucidate gene and protein function and interactions, identify tissue-specific list of RNA transcripts produced by an animal or plant genome (mRNAs, non-coding RNAs, and small RNAs), and discover new SNPs.

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Plant and Animal Epigenetics

Adaptive responses to changes in the environment (such as food availability or drought conditions) can trigger phenotypic changes in plants and animals that affect their viability and reproductive fitness. By using sequencing to identify changes in DNA methylation, chromatin structure, and small RNA expression, researchers can better understand how epigenetic factors contribute to controlling these and other traits in a species of interest.

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Targeted Resequencing

Targeted resequencing digs deeper into the exome or specific genomic regions of interest identified from large-scale association or linkage studies. This efficient and economical method sequences predetermined areas of genetic variation over many samples, identifying common and rare variants (such as SNPs and CNVs). These variants may represent beneficial mutations that can help inform breeding decisions and may reveal causative mutations responsible for plant or animal disease, or parasite susceptibility.

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Genotyping by Sequencing

Genotyping by sequencing provides a low-cost genetic screening method to discover novel plant and animal SNPs and perform genotyping studies, often simultaneously in many specimens. By using animal and plant sequencing for routine screening, researchers can accelerate the return on investment in breeding practice.

Applications of this method include genetic mapping, screening backcross lines, purity testing, constructing haplotype maps, and performing association and genomic evaluation for plant genome studies.

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Soil and Agricultural Metagenomics

Sequencing has transformed environmental metagenomics, enabling the study of large microbial communities directly in their natural environment without prior culturing. These studies can yield important information about diverse microbial populations associated with animal and plant development, from rumen flora that enhance animal digestion to root-associated bacteria involved in nitrogen fixation.

NGS has been instrumental in advancing microbiology research. With NGS, you can measure changes anywhere in the genome without prior knowledge, which is critical for unculturable organisms. Single-base resolution allows tracking of microbial adaptation over short periods of time, both in the laboratory and in the environment.

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Methods Guide

Access the information you need—from BeadChips to library preparation for genome, transcriptome, or epigenome studies to sequencer selection, analysis, and support—all in one place. Select the best tools for your lab with our comprehensive guide designed specifically for research applications.

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Methods Guide
TruSeq Genotype Ne Kit
TruSeq Genotype Ne Kit

A low-cost, targeted solution for genotyping by sequencing of any nonhuman animal or plant species.

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NovaSeq System
NovaSeq System

Scalable throughput and flexibility for virtually any sequencing method, genome, and scale of project.

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Nextera DNA Flex Library Prep Kit

A fast, integrated workflow for a wide range of applications, from human whole-genome sequencing to amplicons, plasmids, and microbial species.

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Introduction to NGS for Agriculture
Introduction to NGS for Agriculture

An introduction to Illumina next-generation sequencing technology for agricultural research.

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Fish Genotyping with NGS
Fish Genotyping with NGS

A novel sequencing method using the HiSeq System reduces cost and enables analysis of tens of thousands of fish.

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Improving Drought Tolerance in Corn
Improving Drought Tolerance in Corn

Syngenta uses Illumina sequencing to understand the mode of action behind their new hybrid corn.

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Improving Drought Tolerance in Corn
Genotyping by Sequencing

This application spotlight describes the advantages and considerations of several sequence-based genotyping research methods.

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Sequencing Enables Selective Breeding of Goat Herd
Sequencing Enables Selective Breeding of Goat Herd

Researchers in New Zealand use genotyping by sequencing to overcome cost and resource hurdles associated with genomic selection.

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Tracking Foodborne Pathogens with NGS
Tracking Foodborne Pathogens with NGS

The MiSeq System helps this lab perform agri-food pathogen testing and epidemiology efficiently.

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Tracking Foodborne Pathogens with NGS
Genotyping by Sequencing and Transcriptomics

The authors of this study used genotyping by sequencing to study crops with varying ploidy levels.

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Tracking Foodborne Pathogens with NGS
Long-Read Sequencing Technology

Illumina synthetic long-read sequencing technology offers a highly accurate solution that enables improved de novo genome assembly.

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