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Short-term physiological changes in roots and leaves of sugarcane varieties exposed to H2O2 in root medium

Research output: Contribution to Journal/Magazine › Journal article › peer-review

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Short-term physiological changes in roots and leaves of sugarcane varieties exposed to H2O2 in root medium. / Silva, Karina I.; Sales, Cristina R. G.; Marchiori, Paulo E. R. et al.
In: Journal of Plant Physiology, Vol. 177, 04.2015, p. 93-99.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Silva, KI, Sales, CRG, Marchiori, PER, Silveira, NM, Machado, EC & Ribeiro, RV 2015, 'Short-term physiological changes in roots and leaves of sugarcane varieties exposed to H2O2 in root medium', Journal of Plant Physiology, vol. 177, pp. 93-99. https://doi.org/10.1016/j.jplph.2015.01.009

APA

Silva, K. I., Sales, C. R. G., Marchiori, P. E. R., Silveira, N. M., Machado, E. C., & Ribeiro, R. V. (2015). Short-term physiological changes in roots and leaves of sugarcane varieties exposed to H2O2 in root medium. Journal of Plant Physiology, 177, 93-99. https://doi.org/10.1016/j.jplph.2015.01.009

Vancouver

Silva KI, Sales CRG, Marchiori PER, Silveira NM, Machado EC, Ribeiro RV. Short-term physiological changes in roots and leaves of sugarcane varieties exposed to H2O2 in root medium. Journal of Plant Physiology. 2015 Apr;177:93-99. Epub 2015 Jan 25. doi: 10.1016/j.jplph.2015.01.009

Author

Silva, Karina I. ; Sales, Cristina R. G. ; Marchiori, Paulo E. R. et al. / Short-term physiological changes in roots and leaves of sugarcane varieties exposed to H2O2 in root medium. In: Journal of Plant Physiology. 2015 ; Vol. 177. pp. 93-99.

Bibtex

@article{784177da0f0d45e9949a93c92ebbcd97,
title = "Short-term physiological changes in roots and leaves of sugarcane varieties exposed to H2O2 in root medium",
abstract = "The aim of this study was to evaluate the differential sensitivity of sugarcane genotypes to H2O2 in root medium. As a hypothesis, the drought tolerant genotype would be able to minimize the oxidative damage and maintain the water transport from roots to shoots, reducing the negative effects on photosynthesis. The sugarcane genotypes IACSP94-2094 (drought tolerant) and IACSP94-2101 (drought sensitive) were grown in a growth chamber and exposed to three levels of H2O2 in nutrient solution: control; 3 mmol L−1 and 80 mmol L−1. Leaf gas exchange, photochemical activity, root hydraulic conductance (Lr) and antioxidant metabolism in both roots and leaves were evaluated after 15 min of treatment with H2O2. Although, root hydraulic conductance, stomatal aperture, apparent electron transport rate and instantaneous carboxylation efficiency have been reduced by H2O2 in both genotypes, IACSP94-2094 presented higher values of those variables as compared to IACSP94-2101. There was a significant genotypic variation in relation to the physiological responses of sugarcane to increasing H2O2 in root tissues, being root changes associated with modifications in plant shoots. IACSP94-2094 presented a root antioxidant system more effective against H2O2 in root medium, regardless H2O2 concentration. Under low H2O2 concentration, water transport and leaf gas exchange of IACSP94-2094 were less affected as compared to IACSP94-2101. Under high H2O2 concentration, the lower sensitivity of IACSP94-2094 was associated with increases in superoxide dismutase activity in roots and leaves and increases in catalase activity in roots. In conclusion, we propose a general model of sugarcane reaction to H2O2, linking root and shoot physiological responses.",
keywords = "Antioxidant metabolism, Hydrogen peroxide, Photosynthesis, Root hydraulic conductance, Saccharum spp",
author = "Silva, {Karina I.} and Sales, {Cristina R. G.} and Marchiori, {Paulo E. R.} and Silveira, {Neidiquele M.} and Machado, {Eduardo C.} and Ribeiro, {Rafael V.}",
year = "2015",
month = apr,
doi = "10.1016/j.jplph.2015.01.009",
language = "English",
volume = "177",
pages = "93--99",
journal = "Journal of Plant Physiology",
issn = "0176-1617",
publisher = "Urban und Fischer Verlag GmbH und Co. KG",

}

RIS

TY - JOUR

T1 - Short-term physiological changes in roots and leaves of sugarcane varieties exposed to H2O2 in root medium

AU - Silva, Karina I.

AU - Sales, Cristina R. G.

AU - Marchiori, Paulo E. R.

AU - Silveira, Neidiquele M.

AU - Machado, Eduardo C.

AU - Ribeiro, Rafael V.

PY - 2015/4

Y1 - 2015/4

N2 - The aim of this study was to evaluate the differential sensitivity of sugarcane genotypes to H2O2 in root medium. As a hypothesis, the drought tolerant genotype would be able to minimize the oxidative damage and maintain the water transport from roots to shoots, reducing the negative effects on photosynthesis. The sugarcane genotypes IACSP94-2094 (drought tolerant) and IACSP94-2101 (drought sensitive) were grown in a growth chamber and exposed to three levels of H2O2 in nutrient solution: control; 3 mmol L−1 and 80 mmol L−1. Leaf gas exchange, photochemical activity, root hydraulic conductance (Lr) and antioxidant metabolism in both roots and leaves were evaluated after 15 min of treatment with H2O2. Although, root hydraulic conductance, stomatal aperture, apparent electron transport rate and instantaneous carboxylation efficiency have been reduced by H2O2 in both genotypes, IACSP94-2094 presented higher values of those variables as compared to IACSP94-2101. There was a significant genotypic variation in relation to the physiological responses of sugarcane to increasing H2O2 in root tissues, being root changes associated with modifications in plant shoots. IACSP94-2094 presented a root antioxidant system more effective against H2O2 in root medium, regardless H2O2 concentration. Under low H2O2 concentration, water transport and leaf gas exchange of IACSP94-2094 were less affected as compared to IACSP94-2101. Under high H2O2 concentration, the lower sensitivity of IACSP94-2094 was associated with increases in superoxide dismutase activity in roots and leaves and increases in catalase activity in roots. In conclusion, we propose a general model of sugarcane reaction to H2O2, linking root and shoot physiological responses.

AB - The aim of this study was to evaluate the differential sensitivity of sugarcane genotypes to H2O2 in root medium. As a hypothesis, the drought tolerant genotype would be able to minimize the oxidative damage and maintain the water transport from roots to shoots, reducing the negative effects on photosynthesis. The sugarcane genotypes IACSP94-2094 (drought tolerant) and IACSP94-2101 (drought sensitive) were grown in a growth chamber and exposed to three levels of H2O2 in nutrient solution: control; 3 mmol L−1 and 80 mmol L−1. Leaf gas exchange, photochemical activity, root hydraulic conductance (Lr) and antioxidant metabolism in both roots and leaves were evaluated after 15 min of treatment with H2O2. Although, root hydraulic conductance, stomatal aperture, apparent electron transport rate and instantaneous carboxylation efficiency have been reduced by H2O2 in both genotypes, IACSP94-2094 presented higher values of those variables as compared to IACSP94-2101. There was a significant genotypic variation in relation to the physiological responses of sugarcane to increasing H2O2 in root tissues, being root changes associated with modifications in plant shoots. IACSP94-2094 presented a root antioxidant system more effective against H2O2 in root medium, regardless H2O2 concentration. Under low H2O2 concentration, water transport and leaf gas exchange of IACSP94-2094 were less affected as compared to IACSP94-2101. Under high H2O2 concentration, the lower sensitivity of IACSP94-2094 was associated with increases in superoxide dismutase activity in roots and leaves and increases in catalase activity in roots. In conclusion, we propose a general model of sugarcane reaction to H2O2, linking root and shoot physiological responses.

KW - Antioxidant metabolism

KW - Hydrogen peroxide

KW - Photosynthesis

KW - Root hydraulic conductance

KW - Saccharum spp

U2 - 10.1016/j.jplph.2015.01.009

DO - 10.1016/j.jplph.2015.01.009

M3 - Journal article

VL - 177

SP - 93

EP - 99

JO - Journal of Plant Physiology

JF - Journal of Plant Physiology

SN - 0176-1617

ER -