Effects of elevated concentration of CO2 and water stress in the microbiota associated with sugarcane rhizosphere

• Grant number: 15/00408-5
• Support Opportunities: Research Program on Global Climate Change - Regular Grants
• Start date: October 01, 2015
• End date: March 31, 2018
• Field of knowledge: Biological Sciences - Genetics - Molecular Genetics and Genetics of Microorganisms
• Principal Investigator: Renato Vicentini dos Santos
• Grantee: Renato Vicentini dos Santos
• Host Institution: Centro de Biologia Molecular e Engenharia Genética (CBMEG). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
• Associated researchers: Laura Maria Mariscal Ottoboni

Abstract

Climate change of anthropogenic source is caused by the increase of the emission of greenhouse gases, inducing changes in the temperature and the rainfall worldwide. In Brazil, it is estimate that the increase in CO2 concentration will promote an increase in the average temperature and drought in determined regions, such as in the north and northeast, while, in other regions, such as in the southeast, the rainfall volume will be higher. All these environmental changes can directly affect agricultural crops. The sugarcane is an important crop in Brazil, mostly in the southeast, midwest and northeast, and the state of São Paulo is the biggest producer. A decrease in the sugarcane production might provide large losses for the producers and for sugar and ethanol industry. Thus, it is important to predict the impact of climate variations in both the cultivars themselves and the associated microbiota, since bacteria can directly affect the health of plants in field. In the rhizosphere, soil bacteria and plants are closely related. Plants release root exudates which act as carbon source for several bacteria. These, in turn, can act either directly or indirectly, to enhance the growth and health of plants by the production of plant growth promoting compounds. Thus, any change in the physiology of plants under different stress conditions can lead to changes in the microbiota of the rhizosphere, since the microorganisms are able to respond quickly to environmental changes. The study of the effect of environmental changes in the rhizosphere of sugar cane could provide new information about the plant-microbial interaction and how bacteria could help plants to survive in adverse conditions. Thus, the project aims to evaluate the effect of increased atmospheric CO2 and water stress in the rhizosphere microbiota associated with sugarcane. (AU)

Scientific publications

(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)

PEREIRA, LETICIA BIANCA; DE OLIVEIRA GAMBARINI, VICTOR MARQUES; DE MENEZES, ALEXANDRE BARRETTO; OTTOBONI, LAURA M. M.; VICENTINI, RENATO. Responses of the sugarcane rhizosphere microbiota to different levels of water stress. APPLIED SOIL ECOLOGY, v. 159, MAR 2021. (14/05929-0, 16/08994-3, 15/00408-5)

PEREIRA, LETICIA B.; ANDRADE, GABRIELA S.; MENEGHIN, SILVANA P.; VICENTINI, RENATO; OTTOBONI, LAURA M. M.. Prospecting Plant Growth-Promoting Bacteria Isolated from the Rhizosphere of Sugarcane Under Drought Stress. Current Microbiology, v. 76, n. 11, p. 1345-1354, NOV 2019. (15/00408-5, 14/05929-0)

PEREIRA, LETICIA B.; DE OLIVEIRA GAMBARINI, VICTOR MARQUES; DE MENEZES, ALEXANDRE BARRETTO; OTTOBONI, LAURA M. M.; VICENTINI, RENATO. Influence of Sugarcane Variety on Rhizosphere Microbiota Under Irrigated and Water-Limiting Conditions. Current Microbiology, v. 79, n. 9, p. 10-pg., 2022-09-01. (14/05929-0, 15/00408-5, 16/08994-3)