Photosynthetic and antioxidant responses to drought during sugarcane ripening
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| 024 | 7 | 0 | |a 10.1007/s11099-015-0146-x |2 doi |
| 035 | |a (NATIONALLICENCE)springer-10.1007/s11099-015-0146-x | ||
| 245 | 0 | 0 | |a Photosynthetic and antioxidant responses to drought during sugarcane ripening |h [Elektronische Daten] |c [C. Sales, P. Marchiori, R. Machado, A. Fontenele, E. Machado, J. Silveira, R. Ribeiro] |
| 520 | 3 | |a Water deficit is an important exogenous factor that enhances the influx of sucrose into sugarcane (Saccharum spp.) stem internodes during ripening, when photosynthetic ability in supplying sinks is essential. The aim of this study was to test the hypothesis that drought tolerance in sugarcane is associated with an effective antioxidant protection during the ripening phase that might maintain a favorable redox balance in chloroplasts and protect photosynthesis under drought conditions. Two commercial sugarcane varieties, IACSP94-2094 (tolerant) and IACSP96-2042 (sensitive), with contrasting behavior under water deficit, were subjected to water withholding during the ripening stage. Our results revealed that the tolerant variety was less affected by water deficit, maintaining photosynthesis for a longer period and showing a faster recovery after rehydration as compared to the sensitive one. As consequence, the tolerant variety faced lesser excess of light energy at PSII. The maintenance of photosynthesis under water deficit and its fast recovery after rehydration resulted in the lower leaf H2O2 concentration and favorable redox status in the drought-tolerant genotype, which was associated with stimulation of superoxide dismutase during ripening. Our results also revealed that ferric superoxide dismutase isoforms were strongly enhanced under drought conditions, playing an important role in chloroplast redox homeostasis. | |
| 540 | |a The Institute of Experimental Botany, 2015 | ||
| 690 | 7 | |a chlorophyll fluorescence |2 nationallicence | |
| 690 | 7 | |a leaf gas exchange |2 nationallicence | |
| 690 | 7 | |a oxidative stress |2 nationallicence | |
| 690 | 7 | |a water stress |2 nationallicence | |
| 690 | 7 | |a AsA : ascorbic acid |2 nationallicence | |
| 690 | 7 | |a AsA + DHA : total ascorbate concentration |2 nationallicence | |
| 690 | 7 | |a APX : ascorbate peroxidase |2 nationallicence | |
| 690 | 7 | |a C i : intercellular CO2 concentration |2 nationallicence | |
| 690 | 7 | |a DAP : days after planting |2 nationallicence | |
| 690 | 7 | |a DHA : dehydroascorbate or oxidized ascorbate |2 nationallicence | |
| 690 | 7 | |a EXC : relative excess of light energy |2 nationallicence | |
| 690 | 7 | |a FM : fresh mass |2 nationallicence | |
| 690 | 7 | |a Fv/Fm : maximal quantum yield of PSII photochemistry |2 nationallicence | |
| 690 | 7 | |a g s : stomatal conductance |2 nationallicence | |
| 690 | 7 | |a NPQ : nonphotochemical quenching |2 nationallicence | |
| 690 | 7 | |a P N : net photosynthetic rate |2 nationallicence | |
| 690 | 7 | |a P N/ C i : instantaneous carboxylation efficiency |2 nationallicence | |
| 690 | 7 | |a REF : reference condition |2 nationallicence | |
| 690 | 7 | |a ROS : reactive oxygen species |2 nationallicence | |
| 690 | 7 | |a SOD : superoxide dismutase |2 nationallicence | |
| 690 | 7 | |a TBARS : thiobarbituric acid-reactive substances |2 nationallicence | |
| 690 | 7 | |a VPDL : leaf-to-air vapour pressure deficit |2 nationallicence | |
| 690 | 7 | |a WD : water-deficit condition |2 nationallicence | |
| 690 | 7 | |a ΦPSII : effective quantum yield of PSII photochemistry |2 nationallicence | |
| 690 | 7 | |a Ψw : leaf water potential |2 nationallicence | |
| 700 | 1 | |a Sales |D C. |u Laboratory of Plant Physiology ‘Coaracy M. Franco', Center for Research and Development in Ecophysiology and Biophysics, Agronomic Institute (IAC), P.O. Box 28, 13012-970, Campinas SP, Brazil |4 aut | |
| 700 | 1 | |a Marchiori |D P. |u Laboratory of Plant Physiology ‘Coaracy M. Franco', Center for Research and Development in Ecophysiology and Biophysics, Agronomic Institute (IAC), P.O. Box 28, 13012-970, Campinas SP, Brazil |4 aut | |
| 700 | 1 | |a Machado |D R. |u Laboratory of Plant Physiology ‘Coaracy M. Franco', Center for Research and Development in Ecophysiology and Biophysics, Agronomic Institute (IAC), P.O. Box 28, 13012-970, Campinas SP, Brazil |4 aut | |
| 700 | 1 | |a Fontenele |D A. |u Laboratory of Plant Metabolism, Department of Biochemistry and Molecular Biology, Federal University of Ceará, 60455-970, Fortaleza CE, Brazil |4 aut | |
| 700 | 1 | |a Machado |D E. |u Laboratory of Plant Physiology ‘Coaracy M. Franco', Center for Research and Development in Ecophysiology and Biophysics, Agronomic Institute (IAC), P.O. Box 28, 13012-970, Campinas SP, Brazil |4 aut | |
| 700 | 1 | |a Silveira |D J. |u Laboratory of Plant Metabolism, Department of Biochemistry and Molecular Biology, Federal University of Ceará, 60455-970, Fortaleza CE, Brazil |4 aut | |
| 700 | 1 | |a Ribeiro |D R. |u Department of Plant Biology, Institute of Biology, University of Campinas, P.O. Box 6109, 13083-970, Campinas SP, Brazil |4 aut | |
| 773 | 0 | |t Photosynthetica |d The Institute of Experimental Biology of the Czech Academy of Sciences |g 53/4(2015-12-01), 547-554 |x 0300-3604 |q 53:4<547 |1 2015 |2 53 |o 11099 | |
| 856 | 4 | 0 | |u https://doi.org/10.1007/s11099-015-0146-x |q text/html |z Onlinezugriff via DOI |
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| 900 | 7 | |a Metadata rights reserved |b Springer special CC-BY-NC licence |2 nationallicence | |
| 908 | |D 1 |a research-article |2 jats | ||
| 949 | |B NATIONALLICENCE |F NATIONALLICENCE |b NL-springer | ||
| 950 | |B NATIONALLICENCE |P 856 |E 40 |u https://doi.org/10.1007/s11099-015-0146-x |q text/html |z Onlinezugriff via DOI | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Sales |D C. |u Laboratory of Plant Physiology ‘Coaracy M. Franco', Center for Research and Development in Ecophysiology and Biophysics, Agronomic Institute (IAC), P.O. Box 28, 13012-970, Campinas SP, Brazil |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Marchiori |D P. |u Laboratory of Plant Physiology ‘Coaracy M. Franco', Center for Research and Development in Ecophysiology and Biophysics, Agronomic Institute (IAC), P.O. Box 28, 13012-970, Campinas SP, Brazil |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Machado |D R. |u Laboratory of Plant Physiology ‘Coaracy M. Franco', Center for Research and Development in Ecophysiology and Biophysics, Agronomic Institute (IAC), P.O. Box 28, 13012-970, Campinas SP, Brazil |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Fontenele |D A. |u Laboratory of Plant Metabolism, Department of Biochemistry and Molecular Biology, Federal University of Ceará, 60455-970, Fortaleza CE, Brazil |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Machado |D E. |u Laboratory of Plant Physiology ‘Coaracy M. Franco', Center for Research and Development in Ecophysiology and Biophysics, Agronomic Institute (IAC), P.O. Box 28, 13012-970, Campinas SP, Brazil |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Silveira |D J. |u Laboratory of Plant Metabolism, Department of Biochemistry and Molecular Biology, Federal University of Ceará, 60455-970, Fortaleza CE, Brazil |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Ribeiro |D R. |u Department of Plant Biology, Institute of Biology, University of Campinas, P.O. Box 6109, 13083-970, Campinas SP, Brazil |4 aut | ||
| 950 | |B NATIONALLICENCE |P 773 |E 0- |t Photosynthetica |d The Institute of Experimental Biology of the Czech Academy of Sciences |g 53/4(2015-12-01), 547-554 |x 0300-3604 |q 53:4<547 |1 2015 |2 53 |o 11099 | ||