Ozone effects in sugarcane

• Grant number: 14/13524-0
• Support type: Scholarships in Brazil - Post-Doctorate
• Effective date (Start): October 01, 2014
• Effective date (End): August 06, 2017
• Field of knowledge: Biological Sciences - Botany - Pant Physiology
• Principal researcher: Rafael Vasconcelos Ribeiro
• Grantee: Barbara Baesso Moura
• Home Institution: Instituto de Biologia (IB). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
• Associated scholarship(s): 14/23839-9 - Sugarcane O3-fumigation experiment, BE.EP.PD

Abstract

Ozone (O3) is the most toxic air pollutant with detrimental effects on plant health. Tropospheric O3 is produced by complex photochemical reactions involving biogenic volatile organic compounds (BVOCs). O3 is seasonally distributed in temperate climates, however, it occurs during the entire year with toxic concentration being registered along the whole year in tropical and subtropical climates. Most of the important agricultural crops responds to O3 stress. However, the detrimental effect of O3 is unknown in sugarcane, one of the most important crop species in Brazil, especially in the state of Sao Paulo. Inside the leaves, O3 phytotoxicity is due to the generation of reactive oxygen species (ROS). When ROS formation exceeds the antioxidant capacity of cells, an oxidative stress occurs leading to the specific structural oxidative marks and visible injuries. Based on the hypothesis that O3 levels are toxic to sugarcane plantations, the present study aims to: (i) assess the morphological, anatomical, biochemical and physiological responses of sugarcane varieties to O3. A fumigation experiment will be carried out in a free-air facility, where plants will be subject to O3 treatments and (ii) understand the BVOCs production by sugarcane varieties. During the experiment, biomass production, leaf gas exchange, photochemistry, antioxidant metabolism and structural oxidative stress marks will be evaluated. Stomatal O3 uptake will be calculated and BVOCs emission will be verified. For the first time, we will be able to understand how sugarcane reacts to O3 stress and if O3 sensitivity is genotype-dependent.

Scientific publications

(5)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

MOURA, BARBARA B.; HOSHIKA, YASUTOMO; SILVEIRA, NEIDIQUELE M.; MARCOS, FERNANDA C. C.; MACHADO, EDUARDO C.; PAOLETTI, ELENA; RIBEIRO, RAFAEL V. Physiological and biochemical responses of two sugarcane genotypes growing under free-air ozone exposure. ENVIRONMENTAL AND EXPERIMENTAL BOTANY, v. 153, p. 72-79, SEP 2018. Web of Science Citations: 1.

HOSHIKA, YASUTOMO; MOURA, BARBARA; PAOLETTI, ELENA. Ozone risk assessment in three oak species as affected by soil water availability. Environmental Science and Pollution Research, v. 25, n. 9, SI, p. 8125-8136, MAR 2018. Web of Science Citations: 10.

MOURA, BARBARA BAESSO; HOSHIKA, YASUTOMO; RIBEIRO, RAFAEL VASCONCELOS; PAOLETTI, ELENA. Exposure- and flux-based assessment of ozone risk to sugarcane plants. Atmospheric Environment, v. 176, p. 252-260, MAR 2018. Web of Science Citations: 4.

SILVEIRA, NEIDIQUELE M.; MARCOS, FERNANDA C. C.; FRUNGILLO, LUCAS; MOURA, BARBARA B.; SEABRA, AMEDEA B.; SALGADO, IONE; MACHADO, EDUARDO C.; HANCOCK, JOHN T.; RIBEIRO, RAFAEL V. S-nitrosoglutathione spraying improves stomatal conductance, Rubisco activity and antioxidant defense in both leaves and roots of sugarcane plants under water deficit. PHYSIOLOGIA PLANTARUM, v. 160, n. 4, p. 383-395, AUG 2017. Web of Science Citations: 14.

MOURA, BARBARA B.; SILVEIRA, NEIDIQUELE M.; MACHADO, EDUARDO C.; RIBEIRO, RAFAEL V. Effects of storage time and freeze-drying on the activity of antioxidant enzymes in sugarcane leaves. BRAZILIAN JOURNAL OF BOTANY, v. 39, n. 1, p. 373-376, MAR 2016. Web of Science Citations: 0.