Can chilling tolerance of C 4 photosynthesis in Miscanthus be transferred to sugarcane?
- Institute for Genomic Biology University of Illinois 1206 W. Gregory Dr. Urbana IL 61801 USA, Institute of Plant Genetics Polish Academy of Sciences ul. Strzeszyńska 34 Poznań 60‐479 Poland
- Institute for Genomic Biology University of Illinois 1206 W. Gregory Dr. Urbana IL 61801 USA
- USDA‐ARS Sugarcane Field Station 12990 U.S. HWY 441 N Canal Point FL 33438 USA
Abstract The goal of this study was to investigate whether chilling tolerance of C 4 photosynthesis in Miscanthus can be transferred to sugarcane by hybridization. Net leaf CO 2 uptake ( A sat ) and the maximum operating efficiency of photosystem II ( Ф PSII ) were measured in warm conditions (25 °C/20 °C), and then during and following a chilling treatment of 10 °C/5 °C for 11 day in controlled environment chambers. Two of three hybrids (miscanes), ‘ US 84‐1058’ and ‘ US 87‐1019’, did not differ significantly from the chilling tolerant M . × giganteus ‘Illinois’ (Mxg), for A sat , and Φ PSII measured during chilling. For Mxg grown at 10 °C/5 °C for 11 days, A sat was 4.4 μ mol m −2 s −1 , while for miscane ‘ US 84‐1058’ and ‘ US 87‐1019’, A sat was 5.7 and 3.5 μ mol m −2 s −1 , respectively. Miscanes ‘ US 84‐1058’ and ‘ US 87‐1019’ and Mxg had significantly higher rates of A sat during chilling than three tested sugarcanes. A third miscane showed lower rates than Mxg during chilling, but recovered to higher rates than sugarcane upon return to warm conditions. Chilling tolerance of ‘ US 84‐1058’ was further confirmed under autumn field conditions in southern Illinois. The selected chilling tolerant miscanes have particular value for biomass feedstock and biofuel production and at the same time they can be a starting point for extending sugarcane's range to colder climates.
- Research Organization:
- Univ. of Illinois at Urbana-Champaign, IL (United States)
- Sponsoring Organization:
- USDOE Advanced Research Projects Agency - Energy (ARPA-E)
- Grant/Contract Number:
- DE‐AR0000206; AR0000206
- OSTI ID:
- 1237971
- Alternate ID(s):
- OSTI ID: 1345704; OSTI ID: 1363859
- Journal Information:
- Global Change Biology. Bioenergy, Journal Name: Global Change Biology. Bioenergy Vol. 8 Journal Issue: 2; ISSN 1757-1693
- Publisher:
- Wiley-BlackwellCopyright Statement
- Country of Publication:
- United Kingdom
- Language:
- English
Web of Science
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