Data/hora: 14/06/2024 19:56:18

Biblioteca(s): | Embrapa Arroz e Feijão; Embrapa Roraima.
Data corrente: | 20/02/2015
Data da última atualização: | 16/04/2018
Autoria: | SCHURT, D. A.; CRUZ, M. F. A.; NASCIMENTO, K. J. T.; FILIPPI, M. C. C.; RODRIGUES, F. A.
Afiliação: | DANIEL AUGUSTO SCHURT, CPAF-RR.
Título: | Silicon potentiates the activities of defense enzymes in the leaf sheaths of rice plants infected by Rhizoctonia solani.
Ano de publicação: | 2014
Fonte/Imprenta: | Tropical Plant Pathology, v. 39, n.6, p.457-463, 2014

Idioma:

Inglês
Português

Conteúdo: | This study aimed to assess the ability of silicon (Si) to potentiate defense enzyme activities in rice leaf sheaths and thus reduce sheath blight, caused by Rhizoctonia solani, development. Rice plants of BR-Irga 409 and Labelle cultivars were grown in a hydroponic solution containing 0 (-Si) or 2 mM (+Si) Si and inoculated with R. solani. Silicon concentration in the leaf sheaths was significantly higher in the +Si plants than the -Si plants by 727% for BR-Irga 409 and 714% for Labelle. The area under relative lesion expansion progress curve was significantly lower for +Si plants than -Si plants, by 34.2% for BR-Irga 409 and 30.59% for Labelle. Increases in the activities of phenylalanine ammonia-lyases, peroxidases, polyphenoloxidases and chitinases in the leaf sheaths of plants supplied with Si, especially of those from BR-Irga 409, led to reduced progress of sheath blight lesions.
Thesagro: | Arroz; Doença de planta; Fungo; Oryza sativa; Rhizoctonia solani.
Thesaurus Nal: | Fungal diseases of plants; Plant nutrition; Rice.

Categoria do assunto:

--
H Saúde e Patologia

URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/118366/1/Daniel-Schurt-Silicon-potentiates-the-activities-of-defense-enzymes-in-the-leaf-sheaths-of-rice-Rhizoctonia1.pdf
Registro original: | Embrapa Roraima (CPAF-RR)

Exemplares:

CPAF-RR - (14633-1) - UPC - AP - PP - S2014.111 -  - S2014.111 - DIS
CNPAF - (35130-1) - UPC - AP - PP - 2014 -  - 2014 - DIS