INVESTIGADORES
LAGORIO MarÍa Gabriela
artículos
Título:
Non-destructive methodologies applied to track the occurrence of natural micropollutants in watering: Glycine max as a biomonitor
Autor/es:
IRIEL, A.; CORDON, G.; FERNÁNDEZ CIRELLI, A.; LAGORIO, M.G.
Revista:
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
Editorial:
ACADEMIC PRESS INC ELSEVIER SCIENCE
Referencias:
Año: 2019 vol. 182
ISSN:
0147-6513
Resumen:
Groundwater is habitually used for watering purposes in rural areas where the rainfall is not enough to adequatelycover the crop requirements. However, groundwater sources could be naturally contaminated with tracemicropollutants like As and associated elements (B, V and F) adversely affecting the plant health. In this work,non-destructive methodologies based on reflectance and chlorophyll emission processes were applied to assessthe presence of micropollutants in watering by using a widespread crop (soybean plant). One of the mostsubstantial results is that the co-occurrence of As, V, B and F in the watering solution clearly produced a synergisticeffect in the plants. In fact, both reflectance and fluorescence techniques were proved in this work to beeffective in detecting non-destructively stress by multielement treatment. Particularly, for reflectance measurementsthe most sensitive parameters were the derivative peak area between 480 and 560 nm and the chlorophyll content. Furthermore, it was demonstrated that it is possible to successfully use a portable hyperspectral spectroradiometer instead of a conventional spectrophotometer as the determinations performed withboth instruments were positively correlated. Concerning fluorescence, variable emission of chlorophyll-a was more sensitive to stress than steady-state emission. The parameter Fv/F0 was a valuable indicator of stress but thequantum yields of PSII and NPQ stood out as the most sensitive indices with variations of around 60 and 100% respectively.