TY - JOUR
T1 - Ultrasound irradiation effect on photosynthesis and transpiration of aquatic lirium plants
AU - Calderón, José Antonio
AU - Calderón, Jeniffer Yeismar
AU - Rojas, Alejandro
AU - Hernández-Wong, Joel
AU - Nogal, Uriel
AU - Marin, Ernesto
AU - Juárez-Gracia, Antonio Gustavo
AU - Peña-Rodríguez, Gabriel
AU - Rojas-Trigos, José Bruno
N1 - Publisher Copyright:
© Copyright © 2021 Taylor & Francis Group LLC.
PY - 2021
Y1 - 2021
N2 - Purpose: To find possible causes of the photobaric response decrease in photoacoustic measurements on Aquatic Lirium plants after ultrasonic irradiations reported elsewhere contributing to understanding the effect of ultrasonic irradiation on them and searching for environmentally friendly methodologies to control this weed. Materials and Methods: The plants were extracted from their natural habitat in Xochimilco water canals, Mexico City. The irradiations on the plants were carried out to 2 hours exposure time, 17 kHz frequency, and 30 W x 4 output power. We used the photoacoustic spectroscopy technique at room temperature in the range of 400–750 nm to analyze the optical absorption response of photosynthetic pigments before and after ultrasonic irradiations. To monitor the leave transpiration rate, we used an LI-COR 6400XT portable system, expressed in units of mols H2O per second per unit area of the leaf surface. Results: We obtained a significant decrease of the chlorophylls bands amplitude in the photoacoustic spectroscopy spectra and a drastic reduction in the leaves transpiration rate of irradiated plants that depends on the time elapsed after irradiation. Remarkable physical changes in the leaves and petioles of the irradiated plants were observed with the naked eye. Conclusions: A significantly decreasing photosynthesis and transpiration in the leaves of the irradiated lirium plants were obtained. Together with the observed physical changes in the leaves and petioles, these results suggest an alteration in the water transport and the overall gas exchange mechanisms affecting the irradiated leaves' transpiration and photosynthesis processes that agree with the photobaric response decrease reported elsewhere. Due to the fundamental role of stomata in these mechanisms, it is suggested, as a possible cause, that the ultrasonic-induced disruption of stomata's mechanical operation by guard cells prevents them from performing their function normally. A hypothesis to be confirmed in future studies, for which a line of action is proposed.
AB - Purpose: To find possible causes of the photobaric response decrease in photoacoustic measurements on Aquatic Lirium plants after ultrasonic irradiations reported elsewhere contributing to understanding the effect of ultrasonic irradiation on them and searching for environmentally friendly methodologies to control this weed. Materials and Methods: The plants were extracted from their natural habitat in Xochimilco water canals, Mexico City. The irradiations on the plants were carried out to 2 hours exposure time, 17 kHz frequency, and 30 W x 4 output power. We used the photoacoustic spectroscopy technique at room temperature in the range of 400–750 nm to analyze the optical absorption response of photosynthetic pigments before and after ultrasonic irradiations. To monitor the leave transpiration rate, we used an LI-COR 6400XT portable system, expressed in units of mols H2O per second per unit area of the leaf surface. Results: We obtained a significant decrease of the chlorophylls bands amplitude in the photoacoustic spectroscopy spectra and a drastic reduction in the leaves transpiration rate of irradiated plants that depends on the time elapsed after irradiation. Remarkable physical changes in the leaves and petioles of the irradiated plants were observed with the naked eye. Conclusions: A significantly decreasing photosynthesis and transpiration in the leaves of the irradiated lirium plants were obtained. Together with the observed physical changes in the leaves and petioles, these results suggest an alteration in the water transport and the overall gas exchange mechanisms affecting the irradiated leaves' transpiration and photosynthesis processes that agree with the photobaric response decrease reported elsewhere. Due to the fundamental role of stomata in these mechanisms, it is suggested, as a possible cause, that the ultrasonic-induced disruption of stomata's mechanical operation by guard cells prevents them from performing their function normally. A hypothesis to be confirmed in future studies, for which a line of action is proposed.
KW - Ultrasound
KW - photobiology
KW - plants
UR - http://www.scopus.com/inward/record.url?scp=85113785078&partnerID=8YFLogxK
U2 - 10.1080/09553002.2021.1969049
DO - 10.1080/09553002.2021.1969049
M3 - Artículo
C2 - 34402394
AN - SCOPUS:85113785078
SN - 0955-3002
VL - 97
SP - 1617
EP - 1623
JO - International Journal of Radiation Biology
JF - International Journal of Radiation Biology
IS - 11
ER -