Effect of Trifluoroacetate, a Persistent Degradation Product of Fluorinated Hydrocarbons, on C3 and C4 Crop Plants

Smit, Martin; Kruger, Gert J.; Heerden, P.D.R. Van; Pienaar, Jakobus J.; Weißflog, L.; Strasser, Reto J.

doi:10.1007/978-1-4020-6709-9_322

Cited by 9 publications

(10 citation statements)

References 10 publications

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“…The parameter PI total by definition considers the following individual effect on the component parameters: the RC-density in the chlorophyll bed (RC/ABS), the performance due to the quantum efficiency of primary photochemistry [u Po /(1 -u Po )], the performance due to the quantum efficiency of the conversion of excitation energy to electron transport [w Eo /(1 -w Eo )] and the performance due to the quantum efficiency of the reduction of end acceptors [d Ro /(1 -d Ro )] (Smit et al 2009). The PI total of RCc3:OsNAC10 plants were higher than the control under normal conditions, and during drought conditions it reduced by 22% while the NT plants reduced by as much as 42%.…”

Section: Resultsmentioning

confidence: 99%

The use of JIP test to evaluate drought-tolerance of transgenic rice overexpressing OsNAC10

Redillas

Strasser

Jeong

et al. 2011

Plant Biotechnol Rep

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In this study, the JIP test was exploited to assess drought-tolerance of transgenic rice overexpressing OsNAC10. Two types of promoters, RCc3 (root-specific) and GOS2 (constitutive), were used to drive the transcription factor OsNAC10, a gene involved in diverse functions including stress responses. Three-month-old plants were exposed to drought for 1 week and their fluorescence kinetics was evaluated. Our results showed that droughttreated non-transgenic plants (NT) have higher fluorescence intensity at the J phase (2 ms) compared to transgenic plants, indicating a decline in electron transport beyond the reduced plastoquinone (Q A -). As manifested by negative L bands, transgenic plants also showed higher energetic connectivity and stability over NT plants under drought conditions. Also, the pool size of the end electron acceptor at the photosystem I was reduced more in NT than in transgenic plants under drought conditions. Furthermore, the transgenic plants had higher PI total , a combined parameter that reflects all the driving forces considered in JIP test, than NT plants under drought conditions. In particular, the PI total of the RCc3:OsNAC10 plants was higher than that of NT plants, which was in good agreement with their differences in grain yield. Thus, the JIP test proved to be practical for evaluating drought-tolerance of transgenic plants.

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Section: Resultsmentioning

confidence: 99%

The use of JIP test to evaluate drought-tolerance of transgenic rice overexpressing OsNAC10

Redillas

Strasser

Jeong

et al. 2011

Plant Biotechnol Rep

View full text Add to dashboard Cite

show abstract

“…The parameter PI total summarizes all the partial driving forces and its individual effects on the component parameters such as the RC-density in the chlorophyll bed (RC/ABS), the performance due to the quantum efficiency of primary photochemistry (ϕ Po /(1−ϕ Po )), the performance due to the quantum efficiency of the conversion of excitation energy to electron transport (ψ Eo / (1−ψ Eo )) and the performance due to the quantum efficiency of the reduction of end acceptors (δ Ro /(1−δ Ro )) [Smit et al, 2009]. Statistical analysis revealed that the PI total of 5, 3, 1 day-replete and negative control plants were significantly reduced (p <0.05) compared to the positive control plants (Fig.…”

Section: Resultsmentioning

confidence: 99%

JIP analysis on rice (Oryza sativa cv Nipponbare) grown under limited nitrogen conditions

Redillas

Jeong

Strasser

et al. 2011

J Korean Soc Appl Biol Chem

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Nitrogen deficiency significantly reduces the CO 2 assimilation capacity of plants and the quantum yield of photosynthesis. Here, we employed the JIP test to determine the effects of nitrogendeficiency on the plant's photosysnthetic ability on the basis of chlorophyll fluorescence. Nitrogendeficient and nitrogen-replete rice plants were analyzed for the fluorescence transients of the plant leaves in comparison with the nitrogen-sufficient controls. Results showed that 7 day-replete plants behaved normally while 5, 3, and 1 day-replete plants were significantly affected from nitrogen starvation. More specifically, nitrogen starvation of plants resulted in an inactivation of photosystem II (PS II) reaction centers and a decline in electron transport beyond the reduced plastoquinone (Q A − ), and a decrease in both the pool size and the reduction of end electron acceptors at the PS I. The affected plants were fully recovered from the deficiency after 7 days of nitrogen repletion, as evidenced by the similar level of fluorescence transients to the positive controls. Thus, our results demonstrated that the movement of electron carriers leading to the reduction of end electron acceptors was affected by nitrogen limitation leading to a more pronounced decrease in the reduction of end electron acceptors. Together with the fact that nitrogen-deficiency limits the CO 2 assimilation of plants, this study indicates that nitrogen metabolism is tightly coupled with photosynthetic ability.

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“…The PSI activity was estimated directly by the changes in the DA 830 leaf absorbance as well as by the recently introduced JIP-test parameter u R 0 representing the quantum yield of electron transport from Q A -to the PSI end electron acceptors (Tsimilli-Michael and Strasser 2008;Smit et al 2008). Recently, a correlation between the changes in DA 830 leaf absorbance and u R 0 in decapitated and defoliated bean plants was found (Yordanov et al 2008).…”

Section: Discussionmentioning

confidence: 99%

“…which is the quantum yield of electron transport from Q A -to PSI end electron transport acceptors (Tsimilli-Michael and Strasser 2008;Smit et al 2008); DI 0 /RC = (ABS/ RC) -(TR 0 /RC) which is the dissipated energy flux per reaction center (at t = 0); the photosynthetic Performance Index (PI ABS ) which is a combined measure of the amount of photosynthetic reaction centers (RC/ABS), the maximal energy flux which reaches the PSII reaction center (TR 0 ), and the electron transport at the onset of illumination (ET 0 ) and is calculated as:…”

Section: Fluorescence Measurementsmentioning

confidence: 99%

Different effects of dark treatment on pigment composition and photosystem I and II activities in intact cotyledons and primary leaves of Cucurbita pepo (zucchini)

et al. 2008

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Darkness mediates different senescencerelated responses depending on the targeting of dark treatment (whole plants or individual leaves) and the organs that perceive the signal (leaves or cotyledons). In this study, we presented data on the differential effects of 2-day dark treatment on progression of senescence in cotyledons and primary leaves of 14-day-old plants of Cucurbita pepo L. (zucchini). The lack of changes in chlorophyll a, chlorophyll b and carotenoid contents as well as in the PSI activity measured by the far-red induced alterations in the P 700 oxidation levels and the quantum yield of electron transport from Q A -to PSI end acceptors (u R 0 ) indicated higher resistance of cotyledons to the applied dark stress compared to the primary leaves. In contrast to cotyledons, PSI activity in the primary leaves was significantly inhibited. Concerning the activity of PSII analyzed by the changes in the JIPtest parameters (the maximal efficiency of PSII photochemistry, u P 0 ; the performance index, PI ABS ; the efficiency of Q A -reoxidation, w 0 and the effective dissipation per reaction center, DI 0 /RC), no differences were observed between cotyledons and primary leaves, thus suggesting that PSI activity in the true leaves was more susceptible to the applied dark stress. The transfer of the darkened plants to normal light regime resulted in delayed senescence in cotyledons which was in contrast to results on Arabidopsis, thus implying the existence of specific mechanisms of cotyledon senescence in different monocarpic plants.Keywords Dark-induced senescence and recovery Á Cotyledons and primary leaves Á PSII and PSI activity Á JIP-test Abbreviations PSA Photosynthetic apparatus PSI Photosystem I PSII Photosystem II RC PSII reaction center Chl

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Effect of Trifluoroacetate, a Persistent Degradation Product of Fluorinated Hydrocarbons, on C3 and C4 Crop Plants

Cited by 9 publications

References 10 publications

The use of JIP test to evaluate drought-tolerance of transgenic rice overexpressing OsNAC10

The use of JIP test to evaluate drought-tolerance of transgenic rice overexpressing OsNAC10

JIP analysis on rice (Oryza sativa cv Nipponbare) grown under limited nitrogen conditions

Different effects of dark treatment on pigment composition and photosystem I and II activities in intact cotyledons and primary leaves of Cucurbita pepo (zucchini)

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