Data/hora: 25/06/2024 00:27:11

Biblioteca(s): | Embrapa Acre.
Data corrente: | 17/01/2011
Data da última atualização: | 06/07/2021
Autoria: | CAVALCANTE, M. de J. B.; ESCOUTE, J.; MADEIRA, J. P.; ROMERO, R. E.; NICOLE, M. R.; OLIVEIRA, L. C. de; HAMELIN, C.; LARTAUD, M.; VERDEIL, J. L.
Afiliação: | MARIA DE JESUS BARBOSA CAVALCANTE, CPAF-AC; JACQUES ESCOUTE, CIRAD; JEAN PAUL MADEIRA, CIRAD; ROCIO E. ROMERO, CIRAD; MICHEL R. NICOLE, CIRAD; LUIS CLAUDIO DE OLIVEIRA, CPAF-AC; CHANTAL HAMELIN, CIRAD; MARC LARTAUD, CIRAD; JEAN L. VERDEIL, CIRAD.
Título: | Reactive oxygen species and cellular interactions between Mycosphaerella fijiensis and banana.
Ano de publicação: | 2011
Fonte/Imprenta: | Tropical Plant Biology, New York, v. 4, n. 2, p. 134-143, June 2011.
DOI: | 10.1007/s12042-011-9071-8
Idioma: | Inglês
Conteúdo: | Globally, the banana plant (Musa spp) is the fourth most important crop after rice, wheat and corn (based on production in tons). It is cultivated in more than 100 tropical and subtropical countries, mainly by small producers and is a fundamental food source for millions of people. Black leaf streak disease (BLSD), caused by Mycosphaerella fijiensis Morelet (sexual phase) or Paracercospora fijiensis (Morelet) Deighton (asexual phase), is the main disease affecting the world's banana culture. This disease has a wide geographical distribution accounting for losses exceeding 50% of global banana production. We conducted a comparative histocytological study on the kinetics of the infection process using three banana genotypes with phenotypes that differ in resistance to BLSD: Grand Naine (Susceptible), Pisang Madu (Partially Resistant) and Calcutta 4 (Resistant). Experiments were conducted under controlled conditions with the objective of characterizing the cellular interaction processes between M. fijiensis and Musa acuminata. Conidia germination occurred 24 hours after inoculation. Germination rates were high (97%) and there were no significant differences between the three genotypes (P>0.147). The Peroxidase enzyme and H2O2 were associated with a hypersensitivity-like reaction in the resistant genotype Calcutta 4, indicating a possible role of the enzyme or its product as defense mechanisms against M. fijiensis in banana plants.
Palavras-Chave: | Bananos; Enfermedades y desórdenes de las plantas; Peroxidasa; Técnicas y protocolos genéticos.
Thesagro: | Análise comparativa; Banana; Doença de planta; Fungo; Interação genética; Musa acuminata; Musa sp; Mycosphaerella fijiensis; Peroxidase; Sigatoka negra; Variedade resistente.
Thesaurus Nal: | Bananas; Black sigatoka; Fungi; Genetic techniques and protocols; Plant diseases and disorders.
Categoria do assunto: | G Melhoramento Genético
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/159565/1/23757.pdf
Registro original: | Embrapa Acre (CPAF-AC)

Exemplares:

CPAF-AC - (23757-1) - UPC - AP - PP - SP 296 -  - 2011.00020 - DES
CPAF-AC - (23757-2) - UPC - AP - DD -  -  -  - DIS