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http://hdl.handle.net/1843/50312| Tipo: | Artigo de Periódico |
| Título: | Sulfur fertilization increases defense metabolites and nitrogen but decreases plant resistance against a host-specific insect |
| Autor(es): | Nathália Alves dos Santos Natália Campos Teixeira Janete Oliveira da Silva Valim Elka Fabiana Aparecida Almeida Maria Goreti de Almeida Oliveira Wellington Garcia Campos |
| Resumo: | We tested the sulfur-modulated plant resistance hypothesis using potted cabbage (Brassica oleracea var. capitata) plants that were grown without and with increasing levels of sulfur fertilization. Changes in plant chemical traits were assessed and developmental performance of Plutella xylostella, a highly host-specific leaf-chewing insect, was followed. Leaf sulfur concentration gradually increased with growing addition of sulfur in soil; however, there was a generalized saturation response curve, with a plateau phase, for improvements in total leaf nitrogen, defense glucosinolates and insect performance. Plutella xylostella performed better in sulfur-fertilized cabbage probably because of the higher level of nitrogen, despite of the higher content of glucosinolates, which are toxic for many non-specialized insects. Despite the importance of sulfur in plant nutrition and production, especially for Brassica crops, our results showed that sulfur fertilization could decrease plant resistance against insects with high feeding specialization. |
| Assunto: | Adubos e fertilizantes Insetos nocivos Plantas - Nutrição Repolho |
| Idioma: | eng |
| País: | Brasil |
| Editor: | Universidade Federal de Minas Gerais |
| Sigla da Instituição: | UFMG |
| Departamento: | ICA - INSTITUTO DE CIÊNCIAS AGRÁRIAS |
| Tipo de Acesso: | Acesso Restrito |
| Identificador DOI: | 10.1017/s0007485317001018 |
| URI: | http://hdl.handle.net/1843/50312 |
| Data do documento: | 24-Out-2017 |
| metadata.dc.url.externa: | https://www.cambridge.org/core/journals/bulletin-of-entomological-research/article/sulfur-fertilization-increases-defense-metabolites-and-nitrogen-but-decreases-plant-resistance-against-a-hostspecific-insect/00210D7FDF34077F8F52B7502B11967A |
| Aparece nas coleções: | Artigo de Periódico |
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