CHLOROPHYLL A FLUORESCENCE METHOD AS A PHYSIOLOGICAL MARKER OF PLANT RESPONSE TO LIGHT STRESS AND ENDO-MYCORRHIZA (AMF)

The strawberry plants cv. ‘Elsanta’ were originated by micropropagation.
Rooting was carried out ex vitro in multiplates.
Inoculum with endomycorrhizal fungi (AMF) was added to the substrate, thus symbiosis developed simultaneously with root formation.
The multiplates were placed under low and high light intensity (35 µmolm^-2s^-1 and 150 µmolm^-2s^-1, respectively). The effects of different light intensity and mycorrhization were evaluated morphologically and physiologically, using Ch a fluorescence method.
Acclimatised plants kept under high-light conditions grew intensively until development of photoinhibition, when they decline.
Mycorrhization improved plants’ growth, especially those from shade.
Parameters of Ch a fluorescence: Fo, Fv/Fm, Y and Fv/Fo showed continuous destruction of photosynthetic apparatus of the plants growing under 150 µmolm^-2s^-1. Mycorrhization enhanced, to some degree, tolerance of the plants to light stress.

V International Symposium on Artificial Lighting in Horticulture

B. Borkowska

fungal symbiosis, growth, micropropagation, photochemical activity, strawberry

https://doi.org/10.17660/ActaHortic.2006.711.21