Responses of photosystem II of white elm to UV-B radiation monitored by OJIP fluorescence transients

Pan, Xinfeng; Zhang, D. Y.; Li, L.

doi:10.1134/s1021443711050153

Cited by 6 publications

(2 citation statements)

References 22 publications

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“…Although further analysis of JIP parameters showed no statistically significant results, trends in the parameters for plants exposed to 150 mT were in agreement with several other studies reporting mild stress conditions for plants exposed to a strong SMF. Thus for instance, we found approximately 5% lower performance index values (PI) for exposed plants [Strasser and Strasser, ; Stirbet and Govindjee, ], an increase in initial Chl a fluorescence at 50 µs after the onset of illumination [Jiang et al, ; Lin et al, ; Pan et al, ; Brestic and Zivcak, ], 5% increase in quantum yield of energy dissipation (φ D0 ) [Jiang et al, ; Lin et al, ; Brestic and Zivcak, ] and 10% increase in dissipation per cross‐section (J 0 DI /CS) [see Jiang et al, ; Lin et al, ]. Higher energy dissipation indicates that a lower amount of energy is successfully trapped and thus, photosystem efficiency is reduced.…”

Section: Discussionmentioning

confidence: 99%

Geomagnetic and strong static magnetic field effects on growth and chlorophyll a fluorescence in Lemna minor

Jan¹,

Fefer

Košmelj

et al. 2015

Bioelectromagnetics

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The geomagnetic field (GMF) varies over Earth's surface and changes over time, but it is generally not considered as a factor that could influence plant growth. The effects of reduced and enhanced GMFs and a strong static magnetic field on growth and chlorophyll a (Chl a) fluorescence of Lemna minor plants were investigated under controlled conditions. A standard 7 day test was conducted in extreme geomagnetic environments of 4 µT and 100 µT as well as in a strong static magnetic field environment of 150 mT. Specific growth rates as well as slow and fast Chl a fluorescence kinetics were measured after 7 days incubation. The results, compared to those of controls, showed that the reduced GMF significantly stimulated growth rate of the total frond area in the magnetically treated plants. However, the enhanced GMF pointed towards inhibition of growth rate in exposed plants in comparison to control, but the difference was not statistically significant. This trend was not observed in the case of treatments with strong static magnetic fields. Our measurements suggest that the efficiency of photosystem II is not affected by variations in GMF. In contrast, the strong static magnetic field seems to have the potential to increase initial Chl a fluorescence and energy dissipation in Lemna minor plants.

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Section: Discussionmentioning

confidence: 99%

Geomagnetic and strong static magnetic field effects on growth and chlorophyll a fluorescence in Lemna minor

Jan¹,

Fefer

Košmelj

et al. 2015

Bioelectromagnetics

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“…Based on the method proposed by Schansker et al [39], the OJIP fluorescence induction curve was analyzed using a JIP test. The JIP test parameters quantifying PSII behavior were obtained and calculated as shown in Table 1 [40].…”

Section: Physiological and Biochemical Analyses Of Apical Fragmentmentioning

confidence: 99%

The Response of Regeneration Ability of Myriophyllum spicatum Apical Fragments to Decaying Cladophora oligoclona

Zhang

Huang

Xue

et al. 2019

Water

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During the restoration of eutrophic shallow lakes, submerged macrophyte recovery is often accompanied by an excessive proliferation of filamentous green algae (FGA). This can lead to the recession or even disappearance of the submerged macrophytes in these lakes. However, the use of plant fragments in reproduction and dispersion is an important life history strategy for submerged macrophytes. In this work, it studied apical fragment propagation in Myriophyllum spicatum and its physiological and biochemical responses to the decomposing liquid of Cladophora oligoclona. Myriophyllum spicatum apical fragments showed no new roots or buds when treated with 0.4 times the original decomposing liquid, and their PSII functional parameters were lower than those of the control. In contrast, the relevant sugar content accumulated to 115.26%, and the activities of an energy enzyme (Ca2+/Mg2+-ATPase) and a secondary metabolic-related enzyme (PAL) increased by 490.63% and 28.13%, showing an elevated defense response. These results indicated that the early regeneration of M. spicatum could be hindered by environmental stress, and that this may further affect the reproduction and colonization of these submerged macrophytes.

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Acclimation of Photosynthetic Apparatus to UV-B Radiation

Brestič

Živčák

Vysoká

et al. 2022

Plant Life and Environment Dynamics

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Responses of photosystem II of white elm to UV-B radiation monitored by OJIP fluorescence transients

Cited by 6 publications

References 22 publications

Geomagnetic and strong static magnetic field effects on growth and chlorophyll a fluorescence in Lemna minor

Geomagnetic and strong static magnetic field effects on growth and chlorophyll a fluorescence in Lemna minor

The Response of Regeneration Ability of Myriophyllum spicatum Apical Fragments to Decaying Cladophora oligoclona

Acclimation of Photosynthetic Apparatus to UV-B Radiation

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