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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Effects of nitric oxide-releasing nanoparticles on neotropical tree seedlings submitted to acclimation under full sun in the nursery

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Autor(es):
Lopes-Oliveira, Patricia Juliana [1] ; Gomes, Diego Genuario [1] ; Pelegrino, Milena Trevisan [2] ; Bianchini, Edmilson [1] ; Pimenta, Jose Antonio [1] ; Stolf-Moreira, Renata [1] ; Seabra, Amedea Barozzi [2] ; Oliveira, Halley Caixeta [1]
Número total de Autores: 8
Afiliação do(s) autor(es):
[1] Univ Estadual Londrina, Dept Anim & Plant Biol, Km 380, BR-86057970 Londrina, PR - Brazil
[2] Univ Fed ABC UFABC, Ctr Nat & Human Sci, Av Estados 5001, BR-09210580 Santo Andre, SP - Brazil
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: SCIENTIFIC REPORTS; v. 9, NOV 22 2019.
Citações Web of Science: 0
Resumo

Polymeric nanoparticles have emerged as carrier systems for molecules that release nitric oxide (NO), a free radical involved in plant stress responses. However, to date, nanoencapsulated NO donors have not been applied to plants under realistic field conditions. Here, we verified the effects of free and nanoencapsulated NO donor, S-nitroso-mercaptosuccinic acid (S-nitroso-MSA), on growth, physiological and biochemical parameters of neotropical tree seedlings kept under full sunlight in the nursery for acclimation. S-nitroso-MSA incorporation into chitosan nanoparticles partially protected the NO donor from thermal and photochemical degradation. The application of nanoencapsulated S-nitroso-MSA in the substrate favoured the growth of seedlings of Heliocarpus popayanensis, a shade-intolerant tree. In contrast, free S-nitroso-MSA or nanoparticles containing non-nitrosated mercaptosuccinic acid reduced photosynthesis and seedling growth. Seedlings of Cariniana estrellensis, a shade-tolerant tree, did not have their photosynthesis and growth affected by any formulations, despite the increase of foliar S-nitrosothiol levels mainly induced by S-nitroso-MSA-loaded nanoparticles. These results suggest that depending on the tree species, nanoencapsulated NO donors can be used to improve seedling acclimation in the nursery. (AU)

Processo FAPESP: 18/08194-2 - Óleo essencial contendo nanopartículas metálicas funcionalizadas com óxido nítrico como estratégia para o controle de patógenos vegetais na agricultura
Beneficiário:Amedea Barozzi Seabra
Linha de fomento: Auxílio à Pesquisa - Regular
Processo FAPESP: 17/05029-8 - Preparação, caracterização e ensaios biológicos de biomateriais poliméricos doadores de óxido nítrico
Beneficiário:Milena Trevisan Pelegrino
Linha de fomento: Bolsas no Brasil - Doutorado