Erratum to: Ultralong Oxford Nanopore Reads Enable the Development of a Reference-Grade Perennial Ryegrass Genome Assembly

Frei, Daniel; Veekman, Elisabeth; Grogg, Daniel; Stoffel-Studer, Ingrid; Morishima, Aki; Shimizu‐Inatsugi, Rie; Yates, Steven; Shimizu, Kentaro; Frey, Jürg E.; Studer, Bruno; Copetti, Dario

doi:10.1093/gbe/evab203

Cited by 5 publications

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The genome ofLolium multiflorumreveals the genetic architecture of paraquat resistance

Brunharo,

Short,

Bobadilla

et al. 2024

Preprint

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SUMMARY- Herbicide resistance in agricultural weeds has become one of the greatest challenges for sustainable crop production. The repeated evolution of herbicide resistance provides an excellent opportunity to study the genetic and physiological basis of the resistance phenotype and the evolutionary responses to human-mediated selection pressures.Lolium multiflorumis a ubiquitous weed that has evolved herbicide resistance repeatedly around the world in various cropping systems.- We assembled and annotated a chromosome-scale genome forL. multiflorumand elucidated the genetic architecture of paraquat resistance by performing quantitative trait loci analysis, genome-wide association studies, genetic divergence analysis, and transcriptome analyses from paraquat-resistant and -susceptibleL. multiflorumpopulations.- Results suggested that two regions of chromosome 5 were associated with paraquat resistance. The regions contain candidate genes that encode cellular transport functions, including a novel multidrug and toxin extrusion (MATE) protein, and a cation transporter previously shown to interact with polyamines.- Our results reveal the genetic architecture of paraquat resistance and identified promising candidate genes for future functional studies. Given thatL. multiflorumis a weed and a cultivated crop species, the genomic resources generated will prove valuable to a wide spectrum of the plant science community.

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The genome ofLolium multiflorumreveals the genetic architecture of paraquat resistance

Brunharo,

Short,

Bobadilla

et al. 2024

Preprint

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Assessing inbreeding in perennial ryegrass (Lolium perenne) as a step towards F1 hybrid breeding

Harris,

Hall,

Arrowfield

et al. 2023

Plant Breeding

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Perennial ryegrass is an important turf and forage grass in temperate regions worldwide. Limited genetic gains have been made with current breeding strategies compared with other grass crops, such as rice and maize, which benefit from Filial 1 (F1) hybrid breeding. One of the largest constraints on hybrid breeding in ryegrass is self‐incompatibility preventing inbreeding, as homozygous parental lines are required to develop hybrids with maximal hybrid vigour. Obligate outcrossing in ryegrass has resulted in cultivars with high levels of heterozygosity, lacking trait uniformity across the population. A naturally occurring self‐fertile (SF) locus that overcomes the self‐incompatibility system has been identified in a European perennial ryegrass population. This study crossed the SF locus into an elite cultivar, producing a self‐compatible population that was inbred for several generations. Genotyping‐by‐sequencing (GBS) was used to assess the population structure and degree of inbreeding in the self‐compatible population. Phenotypic analysis indicated that increased homozygosity did not necessarily affect growth and performance. This study concludes that self‐compatible ryegrass is a promising tool for hybrid breeding and agronomic improvement of perennial ryegrass.

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Genome‐wide identification of heat shock transcription factor families in perennial ryegrass highlights the role of LpHSFC2b in heat stress response

Sun

Wang

et al. 2022

Physiologia Plantarum

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Perennial ryegrass (Lolium perenne) is a cool‐season turf and forage grass. Heat shock transcription factors (HSFs) play an important role in regulating plant abiotic stress. However, HSFs in perennial ryegrass have rarely been characterized. Here, 25 LpHSFs were identified from the perennial ryegrass genome. Phylogenetic analysis showed that the LpHSFs could be classified into 12 subclasses. Gene structure analysis showed that 22 LpHSFs have only one intron. Cis‐acting elements analysis revealed that the promoter of 15 LpHSFs contained hormone‐responsive and abiotic stress‐responsive elements. Expression profile analysis indicated that 24 LpHSFs were differentially expressed under submerge, drought, heat, and cold stresses. In addition, a subclass C2 gene, LpHSFC2b, was significantly induced by abiotic stresses. The LpHSFC2b protein is localized to the nucleus, and heterologous expression of LpHSFC2b in Arabidopsis improves plant thermotolerance. This study provides insights useful for the breeding of stress tolerance in perennial ryegrass.

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Erratum to: Ultralong Oxford Nanopore Reads Enable the Development of a Reference-Grade Perennial Ryegrass Genome Assembly

Cited by 5 publications

References 0 publications

The genome ofLolium multiflorumreveals the genetic architecture of paraquat resistance

The genome ofLolium multiflorumreveals the genetic architecture of paraquat resistance

Assessing inbreeding in perennial ryegrass (Lolium perenne) as a step towards F1 hybrid breeding

Genome‐wide identification of heat shock transcription factor families in perennial ryegrass highlights the role of LpHSFC2b in heat stress response

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