Population structure of Miscanthus sacchariflorus reveals two major polyploidization events, tetraploid-mediated unidirectional introgression from diploid M. sinensis, and diversity centred around the Yellow Sea

Clark, Lindsay V.; Jin, Xiaoli; Petersen, Karen Koefoed; Anzoua, Kossanou G.; Багмет, Л. В.; Chebukin, Pavel; Deuter, M.; Dzyubenko, Elena; Dzyubenko, N. I.; Heo, Kweon; Johnson, Douglas A.; Jørgensen, Uffe; Kjeldsen, Jens Bonderup; Nagano, Hironori; Peng, Junhua; Sabitov, Andrey; Yamada, Toshihiko; Yoo, Ji Hye; Yu, Chang Yeon; Long, Stephen P.; Sacks, Erik J.

doi:10.1093/aob/mcy161

Cited by 33 publications

(83 citation statements)

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“…In contrast, the other three parents of the F 1 populations have typically performed well in central Illinois, especially M. sacchariflorus ‘Robustus’, which is highly rhizomatous and cold hardy (Kaiser & Sacks, ). M. sacchariflorus ‘Robustus’, the unique parent of MapA, originated from northern China or eastern Russia (Clark et al, ) and is thus adapted to hardiness zone 3 (average annual minimum air temperature of −40.0 to −34.4°C). Consistent with its origin, M. sacchariflorus ‘Robustus’ was the most winter hardy entry among the parents and controls in the current study, with all plants surviving without any damage (Figures and ).…”

Section: Discussionmentioning

confidence: 99%

Winter hardiness of Miscanthus (II): Genetic mapping for overwintering ability and adaptation traits in three interconnected Miscanthus populations

et al. 2019

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Miscanthus × giganteus (M×g) is the primary species of Miscanthus for bioenergy feedstock production. The current leading biomass cultivar, M×g ‘1993‐1780’, is insufficiently adapted in temperate regions with cold winters such as USDA hardiness zone 5 (average annual minimum temperature of −28.9 to −23.3°C) or lower. Three interconnected Miscanthus F1 populations that shared a common parent were planted in a replicated field trial at Urbana, IL (hardiness zone 5b; average annual minimum temperature of −26.1 to −23.3°C) in spring 2011. The winter of 2013–2014 was especially cold in Urbana, with a minimum soil temperature at 10 cm of −6.2°C and a minimum air temperature of −25.3°C, giving us an opportunity to evaluate hardiness on established year‐3 plants. The parent in common to all three populations, M. sinensis ssp. condensatus ‘Cosmopolitan’, is native to maritime southern Japan, and in Urbana, it is winter‐damaged most years. In contrast, the three other parents, M. sacchariflorus ‘Robustus’ (MapA), M. sinensis ‘Silberturm’ (MapB), and M. sinensis ‘November Sunset’ (MapC), are typically winter hardy in Urbana. Nearly all MapA progeny plants survived and grew vigorously in spring 2014, whereas in MapB and MapC, many progeny plants did not survive the winter, and most of the survivors were severely damaged, with poor vigor. Negative correlations between overwintering ability and spring regrowth date and autumn dormancy date suggested that the genotypes most likely to survive winters were those that emerged early in spring and/or went dormant early in autumn. Using joint‐population analysis, we identified 53 quantitative trait loci (QTLs) for nine adaptation traits, including nine QTLs for overwintering ability and 11 for spring hardiness scores. Many biologically intuitive candidate genes were observed within or near the QTLs detected in this study, suggesting their validity and potential for further study.

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Section: Discussionmentioning

confidence: 99%

Winter hardiness of Miscanthus (II): Genetic mapping for overwintering ability and adaptation traits in three interconnected Miscanthus populations

et al. 2019

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“…Separately, US‐led expeditions also collected about 1,500 accessions between 2010 and 2014 (Clark et al, ). A comprehensive genetic analysis of the population structure has been produced by RADseq for M. sinensis (Clark et al, ; Van der Weijde, Kamei, et al, ) and M. sacchariflorus (Clark et al, ). Multilocation replicated field trials have also been conducted on these materials in North America and in Asia.…”

Section: Miscanthusmentioning

confidence: 99%

Breeding progress and preparedness for mass‐scale deployment of perennial lignocellulosic biomass crops switchgrass, miscanthus, willow and poplar

et al. 2018

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Genetic improvement through breeding is one of the key approaches to increasing biomass supply. This paper documents the breeding progress to date for four perennial biomass crops (PBCs) that have high output–input energy ratios: namely Panicum virgatum (switchgrass), species of the genera Miscanthus (miscanthus), Salix (willow) and Populus (poplar). For each crop, we report on the size of germplasm collections, the efforts to date to phenotype and genotype, the diversity available for breeding and on the scale of breeding work as indicated by number of attempted crosses. We also report on the development of faster and more precise breeding using molecular breeding techniques. Poplar is the model tree for genetic studies and is furthest ahead in terms of biological knowledge and genetic resources. Linkage maps, transgenesis and genome editing methods are now being used in commercially focused poplar breeding. These are in development in switchgrass, miscanthus and willow generating large genetic and phenotypic data sets requiring concomitant efforts in informatics to create summaries that can be accessed and used by practical breeders. Cultivars of switchgrass and miscanthus can be seed‐based synthetic populations, semihybrids or clones. Willow and poplar cultivars are commercially deployed as clones. At local and regional level, the most advanced cultivars in each crop are at technology readiness levels which could be scaled to planting rates of thousands of hectares per year in about 5 years with existing commercial developers. Investment in further development of better cultivars is subject to current market failure and the long breeding cycles. We conclude that sustained public investment in breeding plays a key role in delivering future mass‐scale deployment of PBCs.

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“…Three experiments were conducted as successive cold‐tolerance screens: Experiment 1: measurements of dark‐adapted maximum quantum yield of PSII photochemistry ( F v /F m ) were used to screen for chilling tolerance in a field‐grown population of 92 M. sacchariflorus accessions that originated from 43°N to 49°N in eastern Russia, representing USDA hardiness zones 5 to 3 (warmer to colder) (Clark et al, ). These accessions are the northernmost members of the extensive M. sacchariflorus Korea/NE China/Russia diploids genetic group, one of six M. sacchariflorus genetic groups (Clark et al, ). Seven accessions were chosen for further evaluation based on their field performance and availability of sufficient clonal material for further investigation: RU2012‐114 (48.60930°N, 134.21509°E, 42.0 m, hardiness zone 3), RU2012‐112 (48.58787°N, 133.93944°E, 45.0 m, hardiness zone 3), RU2012‐069 (48.62491°N, 135.13335°E, 34.0 m, hardiness zone 3), RU2012‐121 (48.54032°N, 134.71992°E, 34.0 m, hardiness zone 3), RU2012‐073 (48.62415°N, 135.13425°E, 28.0 m, hardiness zone 3), RU2012‐083 (48.44911°N, 133.07716°E, 80.0 m, hardiness zone 3), and RU2012‐091 (48.29384°N, 133.17572°E, 35.0 m, hardiness zone 3).…”

Section: Methodsmentioning

confidence: 99%

“…There is probably no or very little genetic diversity between the ‘Illinois’ clone and other M. x giganteus legacy clones in the US and Europe (Głowacka, Clark, et al, ). Genetic mapping of the parent species, however, finds very significant potential for breeding of high‐yielding Miscanthus cultivars (Clark et al, ; Dong et al, ). This raises the likelihood that even more productive forms of M. x giganteus could be developed.…”

Section: Introductionmentioning

confidence: 99%

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SiberianMiscanthus sacchariflorusaccessions surpass the exceptional chilling tolerance of the most widely cultivated clone ofMiscanthusxgiganteus

et al. 2019

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Chilling temperatures (0–15°C) inhibit photosynthesis in most C4 grasses, yet photosynthesis is chilling tolerant in the ‘Illinois’ clone of the C4 grass Miscanthus x giganteus, a candidate cellulosic bioenergy crop. M. x giganteus is a hybrid between Miscanthus sacchariflorus and Miscanthus sinensis; therefore chilling‐tolerant parent lines might produce hybrids superior to the current clone. Recently a collection of M. sacchariflorus from Siberia, the apparent low temperature limit of natural distribution, became available, which may be a source for chilling tolerance. The collection was screened for chilling tolerance of photosynthesis by measuring dark‐adapted maximum quantum yield of PSII photochemistry (Fv/Fm) on plants in the field in cool weather. Superior accessions were selected for further phenotyping: plants were grown at 25°C, transferred to 10°C (chilling) for 15 days, and returned to 25°C for 7 days (recovery). Two experiments assessed: (a) light‐saturated net photosynthetic rate (Asat) and operating quantum yield of PSII photochemistry (ΦPSII), (b) response of net leaf CO2 uptake (A) to intercellular [CO2] (ci). Three accessions showed superior chilling tolerance: RU2012‐069 and RU2012‐114 achieved Asat up to double that of M. x giganteus prior to and during chilling, due to increased ci ‐ saturated photosynthesis (Vmax). RU2012‐069 and RU2012‐114 also maintained greater levels of ΦPSII during chilling, indicating reduced photodamage. Additionally, accession RU2012‐112 maintained a stable Asat throughout the 15‐day chilling period, while Asat continuously declined in other accessions; this suggests RU2012‐112 could outperform others in lengthy chilling periods. Plants were returned to 25°C after the chilling period; M. x giganteus showed the weakest recovery after 1 day, but a strong recovery after 1 week. This study has therefore identified important genetic resources for the synthesis of improved lines of M. x giganteus, which could facilitate the displacement of fossil fuels by cellulosic bioenergy.

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Population structure of Miscanthus sacchariflorus reveals two major polyploidization events, tetraploid-mediated unidirectional introgression from diploid M. sinensis, and diversity centred around the Yellow Sea

Cited by 33 publications

References 54 publications

Winter hardiness of Miscanthus (II): Genetic mapping for overwintering ability and adaptation traits in three interconnected Miscanthus populations

Winter hardiness of Miscanthus (II): Genetic mapping for overwintering ability and adaptation traits in three interconnected Miscanthus populations

Breeding progress and preparedness for mass‐scale deployment of perennial lignocellulosic biomass crops switchgrass, miscanthus, willow and poplar

SiberianMiscanthus sacchariflorusaccessions surpass the exceptional chilling tolerance of the most widely cultivated clone ofMiscanthusxgiganteus

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