Tomato (Solanum lycopersicum L.) phytochrome-B1 on the physiology of production during water deficit

• Grant number: 19/25737-2
• Support Opportunities: Scholarships in Brazil - Master
• Start date: July 01, 2020
• End date: October 31, 2021
• Field of knowledge: Agronomical Sciences - Agronomy
• Principal Investigator: Rogério Falleiros Carvalho
• Grantee: Carlos Alberto Silva Junior
• Host Institution: Faculdade de Ciências Agrárias e Veterinárias (FCAV). Universidade Estadual Paulista (UNESP). Campus de Jaboticabal. Jaboticabal , SP, Brazil

Abstract

Phytochromes are photoreceptors present mainly in vegetables to perceive and signal various changes that have occurred in the environment. In addition to modulating growth and development (a phenomenon known as photomorphogenesis), phytochromes are also part of abiotic stress response signaling. Evidence shows that, when compared to the wild genotype (WT), mutant tomato seedlings that have deficiencies in the type B phytochrome family, especially B1 (phyB1), are more tolerant to water deficit, a major worrying factor in the cultivation of species with agronomic interest. This evidence leads to the hypothesis that the tomato phyB1 genotype is more tolerant to water deficit for fruit production. Thus, the objective of this research project is to evaluate the role of tomato phytochrome B1 in the modulation of responses to water deficit in production. The experiment will consist of a completely randomized design, with 2x3 factorial design, being 2: WT and phyB1 genotypes, and 3: 100, 75 and 50% daily evapotranspirated water replacements. Growth parameters will be evaluated: (1) vegetative (dry mass, number and total leaf area, length, diameter and stem mass and root length and mass), (2) floral reproductive (plant age at anthesis, number of flowers per plant and inflorescence, as well as the number of aborted flowers), in additional the productive aspects (total yield, mass, number and diameter of fruits per plant, soluble solids and fruit pH. The data will be submitted to analysis of variance (ANOVA) and 5% tukey test. (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)

SILVA JUNIOR, CARLOS ALBERTO; D'AMICO-DAMIAO, VICTOR; CARVALHO, ROGERIO FALLEIROS. Phytochrome type B family: The abiotic stress responses signaller in plants. Annals of Applied Biology, v. 178, n. 2, SI, p. 135-148, MAR 2021. (17/26130-9, 19/25737-2)

SILVA JUNIOR, CARLOS ALBERTO; D'AMICO-DAMIAO, VICTOR; CARVALHO, ROGERIO FALLEIROS. Phytochrome type B family: The abiotic stress responses signaller in plants. Annals of Applied Biology, v. 178, n. 2, p. 14-pg., 2020-10-29. (19/25737-2)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

SILVA JUNIOR, Carlos Alberto. The role of phytochrome B1 of tomato (Solanum lycopersicum L.) in the reproductive stage during drought stress. 2021. Master's Dissertation - Universidade Estadual Paulista (Unesp). Faculdade de Ciências Agrárias e Veterinárias. Jaboticabal Jaboticabal.