Agronomic biofortification with selenium and zinc and sulphate x selenate interaction of Se uptake in cowpea crop

• Grant number: 18/18936-6
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: September 01, 2019
• End date: September 30, 2023
• Field of knowledge: Agronomical Sciences - Agronomy - Crop Science
• Principal Investigator: André Rodrigues dos Reis
• Grantee: Vinicius Martins Silva
• Host Institution: Faculdade de Ciências e Engenharia. Universidade Estadual Paulista (UNESP). Campus de Tupã. Tupã , SP, Brazil
• Associated scholarship(s): 20/12218-4 - Selenium and sulfur interaction on amino acids and flavonoids metabolism and relations with nodulation of legume plants, BE.EP.DR

Abstract

Increased yields in crops have shown an inverse relation with nutritional content in the edible parts of crops. It is estimated that one-fifth of the world's population suffers from Zn deficiency. On the other hand, the low natural content of Se in the soils and its antagonism with the sulfur (S) entails foods with very low amounts of Se. The objective of this project is to evaluate the Zn effect on yield and nutritional quality of cowpea genotypes, as well as the relation of Se and S on the uptake and accumulation in cowpea plants under field conditions. Two experiments will be conducted. Experiment 1: an experiment will be carried out to characterize the uptake and accumulation efficiency of Zn in the grains of different cowpea genotypes. In this experiment, 29 cowpea genotypes were evaluated in the presence and absence of Zn (0 and 10 kg ha-1), with 3 replicates, cultivated until the end of cycle to obtain the grains. Experiment 2: in order to evaluate the interaction between Se and S, a field experiment will be performed applying the combination of four rates of Se as sodium selenate (0; 10; 25 and 50 g Se ha-1) and four doses of S in ammonium sulphate (0, 15, 30 and 60 kg S ha-1). At the end of Experiments 1 and 2, the following will be evaluated: macro and micronutrients content including Se, total amino acid content, protein, and sugars in cowpea seeds. The understanding of the factors involved in the genotype variation regarding the accumulation of Zn and the interaction between Se and S applied in the field may provide subsidies for later use of this information in plant breeding, fertilization and in the production of foods of better nutritional quality aiming at a higher concentration of Zn and Se in the grains. (AU)

Scientific publications

(4)

(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, VINICIUS MARTINS; NARDELI, ANA JULIA; DE CARVALHO MENDES, NANDHARA ANGELICA; ROCHA, MAURISRAEL DE MOURA; WILSON, LOLITA; YOUNG, SCOTT D.; BROADLEY, MARTIN R.; WHITE, PHILIP J.; DOS REIS, ANDRE RODRIGUES. Agronomic biofortification of cowpea with zinc: Variation in primary metabolism responses and grain nutritional quality among 29 diverse genotypes. Plant Physiology and Biochemistry, v. 162, p. 378-387, MAY 2021. (18/18936-6)

SILVA, VINICIUS MARTINS; RIMOLDI TAVANTI, RENAN FRANCISCO; GRATAO, PRISCILA LUPINO; ALCOCK, THOMAS DAVID; DOS REIS, ANDRE RODRIGUES. Selenate and selenite affect photosynthetic pigments and ROS scavenging through distinct mechanisms in cowpea (Vigna unguiculata (L.) walp) plants. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY, v. 201, SEP 15 2020. (18/18936-6)

SILVA, VINICIUS MARTINS; PUTTI, FERNANDO FERRARI; WHITE, PHILIP J.; DOS REIS, ANDRE RODRIGUES. hytic acid accumulation in plants: Biosynthesis pathway regulation and role in human die. Plant Physiology and Biochemistry, v. 164, p. 132-146, JUL 2021. (16/19773-8, 20/12218-4, 18/18936-6)

SILVA, VINICIUS MARTINS; WILSON, LOLITA; YOUNG, SCOTT D.; BROADLEY, MARTIN R.; WHITE, PHILIP J.; DOS REIS, ANDRE RODRIGUES. Interaction between sulfur and selenium in agronomic biofortification of cowpea plants under field conditions. PLANT AND SOIL, v. N/A, p. 17-pg., 2022-05-20. (18/18936-6)