J. Phys. IV France
Volume 125, June 2005
Page(s) 803 - 806

J. Phys. IV France 125 (2005) 803-806

DOI: 10.1051/jp4:2005125185

Oxygen evolution from tomato (C3) plants with and without mycorrhiza: Open photoacoustic cell measurement and statistical analysis

S. Sanchez-Rocha1, M. Vargas-Luna2, G. Gutiérrez- Juárez2, R. Huerta Franco2, L. Madueño2 and V. Olalde-Portugal1

1  CINVESTAV Unidad Irapuato, Km 9.6, Libramiento Norte, Carretera Irapuato-León, CP 36500 Irapuato Gt., Mexico
2  Instituto de Física, Universidad de Guanajuato, Loma del Bosque 103 Colonia Lomas del Campestre, CP 37150, León, Gto., Mexico

Mycorrhiza, a common association between root plants and mycorrhizic fungus provides some benefits to the plant, improving its nutrient uptake and increasing the drought resistance as well as the photosynthetic rate. Open photoacoustic (OPC) cell technique was used here to study oxygen evolution from C3 plants (tomato) with and with mycorrhizic fungus (Glomus Fasciculatum) under the lighting conditions similar to those characteristic for the mid-day sunlight. The OPC was found capable of discriminating between the two contributions to photoacoustic signal. The experimental evidence was collected for statistically significant differences between photobaric signals from plants with and without mycorrhiza.

© EDP Sciences 2005