Festulolium

Ghesquière, Marc; Humphreys, Martin; Zwierzykowski, Z.

doi:10.1007/978-1-4419-0760-8_12

Cited by 50 publications

(77 citation statements)

References 54 publications

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“…However, on its own, in hybrids between the closely related species of the LoliumFestuca genome complex, the extent of intraspecific homologous chromosome pairing is insufficient to reliably maintain over generations stable and balanced genome complements. Indeed, if preferential chromosome pairing was sufficient on its own to ensure genome perpetuity, then the consistent difficulties reported by Festulolium breeders in maintaining intact and stable hybrid genomes would not have arisen (Ghesquiere et al, 2010). An additional requirement was necessary in the evolution of Festuca polyploids in order to obtain consistent disomic inheritance in their natural amphiploid hybrid genome complements; the chromosome pairing regulator first identified in F. arundinacea (Jauhar, 1975;Lewis et al, 1980).…”

Section: Resultsmentioning

confidence: 99%

“…(L. perenne × F. pratensis). All these Festulolium hybrids are well known and as synthetic combinations have been bred for agricultural production with the aim to combine the attributes of their parent species (Ghesquiere et al, 2010).…”

Section: Genomic In Situ Hybridization (Gish) and Fluorescence In Sitmentioning

confidence: 99%

“…Festulolium are marketed either as amphiploids, (where entire Lolium and Festuca genomes are combined), or as introgressive forms [where specific genes from one species (usually from Festuca) are incorporated into the genome of another; Ghesquiere et al, 2010]. Whilst maintaining fertility and genome stability through use of an introgression breeding approach has not thus far presented significant difficulties, the more widely used amphiploid breeding approach which for several quantitative traits may be deemed more appropriate has proved to be more problematic (Ghesquiere et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…Whilst maintaining fertility and genome stability through use of an introgression breeding approach has not thus far presented significant difficulties, the more widely used amphiploid breeding approach which for several quantitative traits may be deemed more appropriate has proved to be more problematic (Ghesquiere et al, 2010). One example where Festulolium amphiploids were required was reported recently where in order to assist efficient ruminant nutrition, the maintenance of complete and balanced Lolium and Festuca genome complements was seen as an essential prerequisite in order to combat plant-mediated proteolysis within ingested fodder (Humphreys et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…It has been used for the development of three drought-tolerant Festulolium cultivars (L. multiflorum × F. glaucescens), which were released and registered in France (Ghesquiere et al, 2010). The hybrid combination has more recently also been produced independently at IBERS together with an equivalent amphiploid hybrid involving F. glaucescens and L. perenne.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

An Increasing Need for Productive and Stress Resilient Festulolium Amphiploids: What Can Be Learnt from the Stable Genomic Composition of Festuca pratensis subsp. apennina (De Not.) Hegi?

Kopecký

Harper

Bartoš

et al. 2016

Front. Environ. Sci.

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Section: Resultsmentioning

confidence: 99%

Section: Genomic In Situ Hybridization (Gish) and Fluorescence In Sitmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

An Increasing Need for Productive and Stress Resilient Festulolium Amphiploids: What Can Be Learnt from the Stable Genomic Composition of Festuca pratensis subsp. apennina (De Not.) Hegi?

Kopecký

Harper

Bartoš

et al. 2016

Front. Environ. Sci.

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Root imaging showing comparisons in root distribution and ontogeny in novel Festulolium populations and closely related perennial ryegrass varieties

Humphreys

Doonan

Boyle

et al. 2018

Food and Energy Security

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The incorporation of new sophisticated phenotyping technologies within a crop improvement program allows for a plant breeding strategy that can include selections for major root traits previously inaccessible due to the challenges in their phenotype assessment. High-throughput precision phenotyping technology is employed to evaluate root ontogeny and progressive changes to root architecture of both novel amphiploid and introgression lines of Festulolium over four consecutive months of the growing season and these compared under the same time frame to that of closely related perennial ryegrass (L. perenne) varieties. Root imaging using conventional photography and assembled multiple merged images was used to compare frequencies in root number, their distribution within 0-20 and 20-40 cm depths within soil columns, and progressive changes over time. The Festulolium hybrids had more extensive root systems in comparison with L. perenne, and this was especially evident at depth. It was shown that the acquisition of extensive root systems in Festulolium hybrids was not dependent on the presence of an entire Festuca genome. On the contrary, the most pronounced effect on root development within the four Festulolium populations studied was observed in the introgression line Bx509, where a single small genome sequence from F. arundinacea had been previously transferred onto its homoeologous site on the long arm of chromosome 3 of an otherwise complete L. perenne genome. This demonstrates that a targeted introgression-breeding approach may be sufficient to confer a significant improvement in the root morphology in Lolium without a significant compromise to its genome integrity. The forage production of Bx509 was either higher (months 1-3) or equivalent to (month 4) that of its L. perenne parent control demonstrating that the enhanced root development achieved by the introgression line was without compromise to its agronomic performance.

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A route to decreasing N pollution from livestock: Use of Festulolium hybrids improves efficiency of N flows in rumen simulation fermenters

Kamau

Belanche

Davies

et al. 2020

Food and Energy Security

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Ruminant agriculture suffers from inefficient capture of forage protein and consequential release of N pollutants to land. This is due to proteolysis in the rumen catalyzed by both microbial but initially endogenous plant proteases. Plant breeding‐based solutions are sought to minimize these negative environmental impacts. The aim of this study was to perform an integrated study of rumen N metabolism using semi‐continuous rumen simulation fermenters (Rusitec) to explore the extent to which swards containing Festulolium populations (interspecific hybrids between Lolium and Festuca grass species) with decreased rates of endogenous protein degradation conferred advantageous protein utilization in comparison with a National Listed perennial ryegrass. An in vitro experiment was conducted using three Festulolium hybrids (Lolium perenne × Festuca arundinacea var. glaucescens, LpFg; Lolium perenne × Festuca mairei, LpFm; and Lolium multiflorum × Festuca arundinacea var. glaucescens, LmFg) and a Lolium perenne, Lp control. LpFm and LmFg demonstrated significantly lower plant‐mediated proteolysis than the control. Fresh forage was incubated in Rusitec with rumen fluid from four donor cows. Feed disappearance and production of gas, methane, and volatile fatty acids were similar across cultivars. Whereas no differences in microbial protein synthesis were noted across treatments during early fermentation (0–6 hr after feeding), an increased microbial N flow in LpFm (+30%) and LmFg hybrids (+41%) was observed during late fermentation (6–24 hr after feeding), with higher overall microbial N flows (+13.5% and + 20.2%, respectively) compared with the control (Lp). We propose an underpinning mechanism involving the partitioning of amino acid catabolism toward branched‐chain amino acids and microbial protein synthesis in grasses with slow plant‐mediated proteolysis instead of accumulation of rumen ammonia in grasses with fast plant‐mediated proteolysis. These observations indicate the potential of Festulolium hybrids with a slow plant‐mediated proteolysis trait to improve the efficiency of capture of forage protein and decrease the release of N pollutants onto the land.

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Festulolium

Cited by 50 publications

References 54 publications

An Increasing Need for Productive and Stress Resilient Festulolium Amphiploids: What Can Be Learnt from the Stable Genomic Composition of Festuca pratensis subsp. apennina (De Not.) Hegi?

An Increasing Need for Productive and Stress Resilient Festulolium Amphiploids: What Can Be Learnt from the Stable Genomic Composition of Festuca pratensis subsp. apennina (De Not.) Hegi?

Root imaging showing comparisons in root distribution and ontogeny in novel Festulolium populations and closely related perennial ryegrass varieties

A route to decreasing N pollution from livestock: Use of Festulolium hybrids improves efficiency of N flows in rumen simulation fermenters

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