Claim · model-written summary
The maximum efficiency of PSII photochemistry (Fv/Fm) decreased after spraying ZnO@OAm NRs.
- Taxon
- tomato
Solanum lycopersicume1 - Treatment
- foliar spray with 15 mg L−1 ZnO@OAm NRse1
- Outcome
- maximum efficiency of PSII photochemistry (Fv/Fm)e2
- Direction
- decreasee2
- Comparator
- control valuese2
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Modification of Tomato Photosystem II Photochemistry with Engineered Zinc Oxide Nanorods”
e1“The chlorophyll content of tomato leaflets after a foliar spray with 15 mg L−1 ZnO@OAm NRs presented a hormetic response, with an increased content 30 min after the spray, which dropped to control levels 90 min after the spray”
e2“Simultaneously, 90 min after the spray, the efficiency of the oxygen-evolving complex (OEC) decreased significantly (p < 0.05) compared to control values, with a concomitant increase in ROS generation, a decrease in the maximum efficiency of PSII photochemistry (Fv/Fm), a decrease in the electron transport rate (ETR), and a decrease in the effective quantum yield of PSII photochemistry (ΦPSII), indicating reduced PSII efficiency”
Title
Modification of Tomato Photosystem II Photochemistry with Engineered Zinc Oxide Nanorods
Panagiota Tryfon; Ilektra Sperdouli; Ioannis-Dimosthenis S. Adamakis; et al. Plants 2023. doi:10.3390/plants12193502
Other claims from this paper (14)
- Intervention effect Foliar spray with 15 mg L−1 ZnO@OAm NRs increased tomato chlorophyll content 30 min after spraying.
- Intervention effect Tomato chlorophyll content dropped back to control levels 90 min after foliar spray with ZnO@OAm NRs.
- Intervention effect The efficiency of the oxygen-evolving complex decreased significantly 90 min after spraying compared with control.
- Intervention effect ROS generation increased 90 min after spraying ZnO@OAm NRs compared with control.
- Intervention effect The electron transport rate (ETR) decreased after spraying ZnO@OAm NRs.
- Intervention effect The effective quantum yield of PSII photochemistry (ΦPSII) decreased after spraying ZnO@OAm NRs.
- Mechanism The decreased ETR and ΦPSII were attributed to reduced efficiency of PSII reaction centers (Fv’/Fm’).
- Intervention effect Foliar spray with ZnO@OAm NRs did not alter excess excitation energy at PSII or the fraction of open PSII reaction centers (qp).
- Intervention effect Rod-shaped ZnO@OAm NRs reduced PSII photochemistry, in contrast to irregularly shaped ZnO@OAm NPs.
- Intervention effect Irregularly shaped ZnO@OAm NPs enhanced PSII efficiency.
- Observation The ZnO@OAm NRs had a crystallite size of 15 nm.
- Observation The ZnO@OAm NRs had an organic coating of 8.7% w/w.
- Observation The ZnO@OAm NRs had a hydrodynamic diameter of 122 nm.
- Observation The ZnO@OAm NRs had a ζ-potential of −4.8 mV.