Nanozinc and plant growth-promoting bacteria improve biochemical and metabolic attributes of maize in tropical Cerrado

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dc.contributor.authorJalal, Arshad [UNESP]
dc.contributor.authorOliveira, Carlos Eduardo da Silva [UNESP]
dc.contributor.authorBastos, Andréa de Castro [UNESP]
dc.contributor.authorFernandes, Guilherme Carlos [UNESP]
dc.contributor.authorde Lima, Bruno Horschut [UNESP]
dc.contributor.authorFurlani Junior, Enes [UNESP]
dc.contributor.authorde Carvalho, Pedro Henrique Gomes [UNESP]
dc.contributor.authorGalindo, Fernando Shintate
dc.contributor.authorGato, Isabela Martins Bueno [UNESP]
dc.contributor.authorTeixeira Filho, Marcelo Carvalho Minhoto [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2023-07-29T16:03:54Z
dc.date.available2023-07-29T16:03:54Z
dc.date.issued2023-01-12
dc.description.abstractIntroduction: Plant growth-promoting bacteria (PGPBs) could be developed as a sustainable strategy to promote plant growth and yield to feed the ever-growing global population with nutritious food. Foliar application of nano-zinc oxide (ZnO) is an environmentally safe strategy that alleviates zinc (Zn) malnutrition by improving biochemical attributes and storage proteins of grain. Methods: In this context, the current study aimed to investigate the combined effect of seed inoculation with PGPBs and foliar nano-ZnO application on the growth, biochemical attributes, nutrient metabolism, and yield of maize in the tropical savannah of Brazil. The treatments consisted of four PGPB inoculations [i.e., without inoculation, Azospirillum brasilense (A. brasilense), Bacillus subtilis (B. subtilis), Pseudomonas fluorescens (P. fluorescens), which was applied on the seeds] and two doses of Zn (i.e., 0 and 3 kg ha−1, applied from nano-ZnO in two splits on the leaf). Results: Inoculation of B. subtilis with foliar ZnO application increased shoot dry matter (7.3 and 9.8%) and grain yield (17.1 and 16.7%) in 2019-20 and 2020-2021 crop seasons respectively. Inoculation with A. brasilense increased 100-grains weight by 9.5% in both crop seasons. Shoot Zn accumulation was improved by 30 and 51% with inoculation of P. fluorescens in 2019-20 and 2020-2021 crop seasons. Whereas grain Zn accumulation was improved by 49 and 50.7% with inoculation of B. subtilis and P. fluorescens respectively. In addition, biochemical attributes (chlorophyll a, b and total, carotenoids, total soluble sugar and amino acids) were improved with inoculation of B. subtilis along with foliar nano ZnO application as compared to other treatments. Co-application of P. fluorescens with foliar ZnO improved concentration of grains albumin (20 and 13%) and globulin (39 and 30%). Also, co-application of B. subtilis and foliar ZnO improved concentration of grains glutelin (8.8 and 8.7%) and prolamin (15 and 21%) in first and second seasons. Discussion: Therefore, inoculation of B. subtilis and P. fluorescens with foliar nano-ZnO application is considered a sustainable and environmentally safe strategy for improving the biochemical, metabolic, nutritional, and productivity attributes of maize in tropical Savannah regions.en
dc.description.affiliationDepartment of Plant Protection Rural Engineering and Soils (DEFERS) São Paulo State University (UNESP)
dc.description.affiliationDepartment of Plant Science Food Technology and Socio-Economics São Paulo State University (UNESP)
dc.description.affiliationCenter for Nuclear Energy in Agriculture (CENA) University of São Paulo (USP)
dc.description.affiliationUnespDepartment of Plant Protection Rural Engineering and Soils (DEFERS) São Paulo State University (UNESP)
dc.description.affiliationUnespDepartment of Plant Science Food Technology and Socio-Economics São Paulo State University (UNESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdCNPq: 166331/2018-0
dc.description.sponsorshipIdCNPq: 311308/2020-1
dc.identifierhttp://dx.doi.org/10.3389/fpls.2022.1046642
dc.identifier.citationFrontiers in Plant Science, v. 13.
dc.identifier.doi10.3389/fpls.2022.1046642
dc.identifier.issn1664-462X
dc.identifier.scopus2-s2.0-85146749457
dc.identifier.urihttp://hdl.handle.net/11449/249589
dc.language.isoeng
dc.relation.ispartofFrontiers in Plant Science
dc.sourceScopus
dc.subjectamino acids
dc.subjectgrain yield
dc.subjectnutrient uptake
dc.subjectPGPB (plant growth-promoting bacteria)
dc.subjectphotosynthesis
dc.subjectplant growth
dc.subjectstorage proteins
dc.subjectzinc fertilization
dc.titleNanozinc and plant growth-promoting bacteria improve biochemical and metabolic attributes of maize in tropical Cerradoen
dc.typeArtigo

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Artigos - Fitotecnia, Tecnologia de Alimentos e Sócio Economia - FEIS