Winter cold-tolerance thresholds in field-grown Miscanthus hybrid rhizomes

Journal of Experimental Botany
Murilo de Melo PeixotoRowan F Sage

Abstract

The cold tolerance of winter-dormant rhizomes was evaluated in diploid, allotriploid, and allotetraploid hybrids of Miscanthus sinensis and Miscanthus sacchariflorus grown in a field setting. Two artificial freezing protocols were tested: one lowered the temperature continuously by 1°C h(-1) to the treatment temperature and another lowered the temperature in stages of 24h each to the treatment temperature. Electrolyte leakage and rhizome sprouting assays after the cold treatment assessed plant and tissue viability. Results from the continuous-cooling trial showed that Miscanthus rhizomes from all genotypes tolerated temperatures as low as -6.5 °C; however, the slower, staged-cooling procedure enabled rhizomes from two diploid lines to survive temperatures as low as -14 °C. Allopolyploid genotypes showed no change in the lethal temperature threshold between the continuous and staged-cooling procedure, indicating that they have little ability to acclimate to subzero temperatures. The results demonstrated that rhizomes from diploid Miscanthus lines have superior cold tolerance that could be exploited to improve performance in more productive polyploid lines. With expected levels of soil insulation, low winter air temperatures shou...Continue Reading

References

Oct 1, 1996·Proceedings of the National Academy of Sciences of the United States of America·C JonakH Hirt
Mar 12, 2004·Annual Review of Plant Physiology and Plant Molecular Biology·Michael F. Thomashow
Jul 13, 2004·Plant Physiology·Fatma Kaplan, Charles L Guy
Jan 31, 2006·The Plant Journal : for Cell and Molecular Biology·Paul E VersluesJian-Kang Zhu
Feb 20, 2007·Current Biology : CB·Chris Somerville
Feb 24, 2007·Cryobiology·David P LivingstonEliot M Herman
Apr 1, 2008·Current Opinion in Biotechnology·Xin-Guang ZhuDonald R Ort
May 16, 2008·Biometrical Journal. Biometrische Zeitschrift·Torsten HothornPeter Westfall
Jun 3, 2008·Current Opinion in Biotechnology·Emily A HeatonStephen P Long
Jun 19, 2009·Plant Physiology·Frank G Dohleman, Stephen P Long
Mar 14, 2012·Physiologia Plantarum·Lawrence V Gusta, Michael Wisniewski
Apr 16, 2015·Journal of Experimental Botany·Rowan F SageBill Deen

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Citations

Apr 16, 2015·Journal of Experimental Botany·Rowan F SageBill Deen
Sep 12, 2015·Journal of Experimental Botany·Nicholas C Carpita, Rowan F Sage
May 17, 2018·Oecologia·Heather A CoinerRowan F Sage
Sep 15, 2020·Plant, Cell & Environment·Ryan A FolkDouglas E Soltis
Jan 10, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Kasper van der CruijsenLuisa M Trindade
Feb 11, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Michel BergsMargit Schulze

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Methods Mentioned

BETA
seven
flow cytometry

Software Mentioned

multcomp
lme4

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