caa a22 4500 445390875 CHVBK 20180317143046.0 cr unu---uuuuu 170323e20110301xx s 000 0 eng 10.1007/s10327-010-0288-4 doi (NATIONALLICENCE)springer-10.1007/s10327-010-0288-4 Physiological effects of the hydrophilic phytotoxins produced by Mycosphaerella fijiensis , the causal agent of black sigatoka in banana plants [Elektronische Daten] [Carlos Cruz-Cruz, Karlina García-Sosa, Fabiola Escalante-Erosa, Luis Peña-Rodríguez] Although Mycosphaerella fijiensis, the causal agent of black sigatoka disease of banana, has been known to produce numerous lipophilic host-selective (HSTs) and nonhost selective phytotoxins (non-HSTs), only recently we have reported that the pathogen also produces hydrophilic phytotoxins. Here we examined the effect of light on the toxicity of the hydrophilic phytotoxins and estimated the electrolyte leakage and H2O2 and superoxide generation in detached banana leaves to study their mode of action at the cellular level. Nonhost plant species were also tested to determine whether the toxins are HSTs or non-HSTs. Our results suggest that the hydrophilic phytotoxins are non-HSTs, that their phytotoxicity is not light dependent, and that they may act at the plasma membrane by altering permeability through oxidative damage, by inducing ROS production as part of their mechanism of action. The Phytopathological Society of Japan and Springer, 2010 Black sigatoka nationallicence Electrolyte leakage assay nationallicence Musa spp nationallicence Mycosphaerella fijiensis nationallicence Phytotoxins nationallicence Reactive oxygen species nationallicence Cruz-Cruz Carlos Unidad de Biotecnología, Centro de Investigación Científica de Yucatán, Calle 43 No. 130, Col. Chuburná, 97200, Mérida, Yucatán, Mexico aut García-Sosa Karlina Unidad de Biotecnología, Centro de Investigación Científica de Yucatán, Calle 43 No. 130, Col. Chuburná, 97200, Mérida, Yucatán, Mexico aut Escalante-Erosa Fabiola Unidad de Biotecnología, Centro de Investigación Científica de Yucatán, Calle 43 No. 130, Col. Chuburná, 97200, Mérida, Yucatán, Mexico aut Peña-Rodríguez Luis Unidad de Biotecnología, Centro de Investigación Científica de Yucatán, Calle 43 No. 130, Col. Chuburná, 97200, Mérida, Yucatán, Mexico aut Journal of General Plant Pathology Springer Japan 77/2(2011-03-01), 93-100 1345-2630 77:2<93 2011 77 10327 https://doi.org/10.1007/s10327-010-0288-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10327-010-0288-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Cruz-Cruz Carlos Unidad de Biotecnología, Centro de Investigación Científica de Yucatán, Calle 43 No. 130, Col. Chuburná, 97200, Mérida, Yucatán, Mexico aut NATIONALLICENCE 700 1- García-Sosa Karlina Unidad de Biotecnología, Centro de Investigación Científica de Yucatán, Calle 43 No. 130, Col. Chuburná, 97200, Mérida, Yucatán, Mexico aut NATIONALLICENCE 700 1- Escalante-Erosa Fabiola Unidad de Biotecnología, Centro de Investigación Científica de Yucatán, Calle 43 No. 130, Col. Chuburná, 97200, Mérida, Yucatán, Mexico aut NATIONALLICENCE 700 1- Peña-Rodríguez Luis Unidad de Biotecnología, Centro de Investigación Científica de Yucatán, Calle 43 No. 130, Col. Chuburná, 97200, Mérida, Yucatán, Mexico aut NATIONALLICENCE 773 0- Journal of General Plant Pathology Springer Japan 77/2(2011-03-01), 93-100 1345-2630 77:2<93 2011 77 10327 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer