APPLICATION OF MODULATED CHLOROPHYLL FLUORESCENCE AND MODULATED CHLOROPHYLL FLUORESCENCE IMAGING IN STUDYING ENVIRONMENTAL STRESSES EFFECT

L. Guidi, M. Landi, C. Penella, A. Calatayud

Abstract


Chlorophyll (Chl) a fluorescence is a widely used tool to monitor the photosynthetic process in plants subjected to environmental stresses.
this review reports the theoretical bases of Chl fluorescence, and the significance of the most important Chl fluorescence parameters. it also reports
how these parameters can be utilised to estimate changes in photosystem ii (PSII) photochemistry, linear electron flux and energy dissipation
mechanisms. the relation between actual PSII photochemistry and CO2 assimilation is discussed, as is the role of photochemical and
non-photochemical quenching in inducing changes in PSII activity. the application of Chl fluorescence imaging to study heterogeneity on leaf
lamina is also considered. this review summarises only some of the results obtained by this methodology to study the effects of different
environmental stresses, namely water and nutrients availability, pollutants, temperature and salinity.

Keywords


Chlorophyll; Drought; Heavy metals; Non-photochemical quenching; Ozone; Photochemical quenching; Photosynthesis; Salinity

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DOI: http://dx.doi.org/10.4462/annbotrm-13181

Annali di Botanica is published by the Department of Environmental Biology - University La Sapienza of Rome, Italy. The journal is printed by Sapienza Università di Roma - Centro Stampa Università.

ISSN: 2239-3129