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Siberian Miscanthus sacchariflorus accessions surpass the exceptional chilling tolerance of the most widely cultivated clone of Miscanthus x giganteus

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Siberian Miscanthus sacchariflorus accessions surpass the exceptional chilling tolerance of the most widely cultivated clone of Miscanthus x giganteus. / Pignon, Charles P.; Spitz, Idan; Sacks, Erik J.; Jørgensen, Uffe; Kørup, Kirsten; Long, Stephen P.

In: GCB Bioenergy, Vol. 11, No. 7, 01.07.2019, p. 883-894.

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Pignon, Charles P. ; Spitz, Idan ; Sacks, Erik J. ; Jørgensen, Uffe ; Kørup, Kirsten ; Long, Stephen P. / Siberian Miscanthus sacchariflorus accessions surpass the exceptional chilling tolerance of the most widely cultivated clone of Miscanthus x giganteus. In: GCB Bioenergy. 2019 ; Vol. 11, No. 7. pp. 883-894.

Bibtex

@article{120f5b07a5834ca785bd0bd06cf1cac2,
title = "Siberian Miscanthus sacchariflorus accessions surpass the exceptional chilling tolerance of the most widely cultivated clone of Miscanthus x giganteus",
abstract = "Chilling temperatures (0–15°C) inhibit photosynthesis in most C4 grasses, yet photosynthesis is chilling tolerant in the {\textquoteleft}Illinois{\textquoteright} 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. {\textcopyright} 2019 The Authors. GCB Bioenergy Published by John Wiley & Sons Ltd.",
keywords = "bioenergy, biomass, chilling tolerance, cold tolerance, Miscanthus sacchariflorus, Miscanthus x giganteus, photosynthesis, photosystem II, Siberia, Biofuels, Biomass, Carbon dioxide, Cloning, Crops, Fossil fuels, Photosynthesis, Quantum yield, Recovery, Temperature, Bio-energy, Chilling tolerance, Cold tolerance, Miscanthus, Photosystem II, SIBERIA, Plants (botany), Miscanthus sinensis, Poaceae",
author = "Pignon, {Charles P.} and Idan Spitz and Sacks, {Erik J.} and Uffe J{\o}rgensen and Kirsten K{\o}rup and Long, {Stephen P.}",
year = "2019",
month = jul,
day = "1",
doi = "10.1111/gcbb.12599",
language = "English",
volume = "11",
pages = "883--894",
journal = "GCB Bioenergy",
issn = "1757-1693",
publisher = "Blackwell Publishing Ltd",
number = "7",

}

RIS

TY - JOUR

T1 - Siberian Miscanthus sacchariflorus accessions surpass the exceptional chilling tolerance of the most widely cultivated clone of Miscanthus x giganteus

AU - Pignon, Charles P.

AU - Spitz, Idan

AU - Sacks, Erik J.

AU - Jørgensen, Uffe

AU - Kørup, Kirsten

AU - Long, Stephen P.

PY - 2019/7/1

Y1 - 2019/7/1

N2 - 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. © 2019 The Authors. GCB Bioenergy Published by John Wiley & Sons Ltd.

AB - 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. © 2019 The Authors. GCB Bioenergy Published by John Wiley & Sons Ltd.

KW - bioenergy

KW - biomass

KW - chilling tolerance

KW - cold tolerance

KW - Miscanthus sacchariflorus

KW - Miscanthus x giganteus

KW - photosynthesis

KW - photosystem II

KW - Siberia

KW - Biofuels

KW - Biomass

KW - Carbon dioxide

KW - Cloning

KW - Crops

KW - Fossil fuels

KW - Photosynthesis

KW - Quantum yield

KW - Recovery

KW - Temperature

KW - Bio-energy

KW - Chilling tolerance

KW - Cold tolerance

KW - Miscanthus

KW - Photosystem II

KW - SIBERIA

KW - Plants (botany)

KW - Miscanthus sinensis

KW - Poaceae

U2 - 10.1111/gcbb.12599

DO - 10.1111/gcbb.12599

M3 - Journal article

VL - 11

SP - 883

EP - 894

JO - GCB Bioenergy

JF - GCB Bioenergy

SN - 1757-1693

IS - 7

ER -