Degradation of photosynthetic activity of saintpaulia leaf by sudden temperature drop

Yun, Jae-Gill; Hayashi, Takahiro; Yazawa, Susumu; Yasuda, Yuko; Katoh, Takahiro

doi:10.1016/s0168-9452(97)00112-x

Cited by 9 publications

(5 citation statements)

References 29 publications

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“…A decline in chlorophyll fluorescence after leaf injury in saintpaulia has been reported [27], [31]. In this study, we continuously monitored chlorophyll fluorescence during the injury process and showed that decreases of øII and increases of NPQ occurred concurrently in saintpaulia leaves (Fig.…”

Section: Discussionsupporting

confidence: 55%

“…In injured saintpaulia leaves, palisade mesophyll cells and organelles such as nuclei, mitochondria and chloroplasts were damaged, resulting in cell death [30]. In particular, chloroplasts ruptured and there was a decline in their chlorophyll fluorescence following the temperature decrease [31], [32]. However, the mechanism of this injury is largely unknown, except for a few reports suggesting that reactive oxygen species (ROS) may be involved [33], [34].…”

Section: Introductionmentioning

confidence: 99%

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Sudden Collapse of Vacuoles in Saintpaulia sp. Palisade Cells Induced by a Rapid Temperature Decrease

et al. 2013

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It is well known that saintpaulia leaf is damaged by the rapid temperature decrease when cold water is irrigated onto the leaf surface. We investigated this temperature sensitivity and the mechanisms of leaf damage in saintpaulia (Saintpaulia sp. cv. ‘Iceberg’) and other Gesneriaceae plants. Saintpaulia leaves were damaged and discolored when subjected to a rapid decrease in temperature, but not when the temperature was decreased gradually. Sensitivity to rapid temperature decrease increased within 10 to 20 min during pre-incubation at higher temperature. Injury was restricted to the palisade mesophyll cells, where there was an obvious change in the color of the chloroplasts. During a rapid temperature decrease, chlorophyll fluorescence monitored by a pulse amplitude modulated fluorometer diminished and did not recover even after rewarming to the initial temperature. Isolated chloroplasts were not directly affected by the rapid temperature decrease. Intracellular pH was monitored with a pH-dependent fluorescent dye. In palisade mesophyll cells damaged by rapid temperature decrease, the cytosolic pH decreased and the vacuolar membrane collapsed soon after a temperature decrease. In isolated chloroplasts, chlorophyll fluorescence declined when the pH of the medium was lowered. These results suggest that a rapid temperature decrease directly or indirectly affects the vacuolar membrane, resulting in a pH change in the cytosol that subsequently affects the chloroplasts in palisade mesophyll cells. We further confirmed that the same physiological damage occurs in other Gesneriaceae plants. These results strongly suggested that the vacuoles of palisade mesophyll cells collapsed during the initial phase of leaf injury.

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Section: Discussionsupporting

confidence: 55%

Section: Introductionmentioning

confidence: 99%

Sudden Collapse of Vacuoles in Saintpaulia sp. Palisade Cells Induced by a Rapid Temperature Decrease

et al. 2013

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“…The sudden drops in Chl fluorescence below 6ЊC in bean at low PPFD and in pea occur at both emission bands but to a lower extent for F735. Chl fluorescence decreases were recently observed when the T was suddenly reduced by a 3 s contact with water at 5ЊC at low light intensity (25 E m Ϫ2 s Ϫ1 ) (51). The effect of chilling on Chl fluorescence starting from the F s level is analogous to that observed during the continuous T change after the Peltier system was set at 4ЊC, since an instantaneous fluorescence increase was followed by a slower decline.…”

Section: Temperature-induced Fluorescence Changes: Fluorescence Yieldmentioning

confidence: 78%

“…The effect of chilling on Chl fluorescence starting from the F s level is analogous to that observed during the continuous T change after the Peltier system was set at 4ЊC, since an instantaneous fluorescence increase was followed by a slower decline. Destacking of the thylakoid membranes was observed to occur within a very short time after chilling of a chilling-sensitive plant (51). When the thylakoids are unstacked the protein complexes are homogeneously distributed within the membrane and the excitation spillover from PSII to PSI is facilitated (26,52).…”

Section: Temperature-induced Fluorescence Changes: Fluorescence Yieldmentioning

confidence: 99%

The Effect of Decreasing Temperature up to Chilling Values on the in vivo F685/F735 Chlorophyll Fluorescence Ratio in Phaseolus vulgaris and Pisum sativum: The Role of the Photosystem I Contribution to the 735 nm Fluorescence Band¶

Agati

Cerović

Moya

2000

Photochem Photobiol

109

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The effect of leaf temperature (T), between 23 and 4 degrees C, on the chlorophyll (Chl) fluorescence spectral shape was investigated under moderate (200 microE m-2 s-1) and low (30-35 microE m-2 s-1) light intensities in Phaseolus vulgaris and Pisum sativum. With decreasing temperature, an increase in the fluorescence yield at both 685 and 735 nm was observed. A marked change occurred at the longer emission band resulting in a decrease in the Chl fluorescence ratio, F685/F735, with reducing T. Our fluorescence analysis suggests that this effect is due to a temperature-induced state 1-state 2 transition that decreases and increases photosystem II (PSII) and photosystem I (PSI) fluorescence, respectively. Time-resolved fluorescence life-time measurements support this interpretation. At a critical temperature (about 6 degrees C) and low light intensity a sudden decrease in fluorescence intensity was observed, with a larger effect at 685 than at 735 nm. This is probably linked to a modification of the thylakoid membranes, induced by chilling temperatures, which can alter the spill-over from PSII to PSI. The contribution of photosystem I to the long-wavelength Chl fluorescence band (735 nm) at room temperature was estimated by both time-resolved fluorescence lifetime and fluorescence yield measurements at 685 and 735 nm. We found that PSI contributes to the 735 nm fluorescence for about 40, 10 and 35% at the minimal (F0), maximal (Fm) and steady-state (Fs) levels, respectively. Therefore, PSI must be taken into account in the analysis of Chl fluorescence parameters that include the 735 nm band and to interpret the changes in the Chl fluorescence ratio that can be induced by different agents.

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“…The photochemical activity of isolated chloroplasts decreases after chilling, and photosystem I (PSI) activity decreases more rapidly than that of photosystem II (PSII) (Yun et al, 1997). Some negative effects of chilling may be because of an increased production of reactive oxygen species (ROS), the accumulation of which may lead to an increase in lipid peroxidation (Adamski et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Effects of low temperature on photosynthetic characteristics in the super-high-yield hybrid rice ‘Liangyoupeijiu’ at the seedling stage

Shi¹,

Wei²,

Chen³

2016

Genet. Mol. Res.

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ABSTRACT.To elucidate the resistance of high-yield hybrid rice (Oryza sativa L.) at the seedling stage to low temperature, photosynthetic characteristics, such as membrane lipid peroxidation, fatty acid composition, and chloroplast ultrastructure, were investigated in a newly developed super-hybrid rice ('Liangyoupeijiu') and a traditional chill-sensitive hybrid rice ('Shanyou63'), with 20°C as the control condition and 10°C as the low temperature treatment. Chlorophyll content, oxygen consumption by photosystem I, and oxygen production by photosystem II in the thylakoid membrane mainly decreased under the low-temperature treatment. The malondialdehyde content of 'Liangyoupeijiu' decreased slightly, while increases in membrane lipid peroxidation were greater in 10°C-treated than in 25°C-treated 'Shanyou63' seedlings. The index of unsaturated fatty acids increased in the two cultivars, particularly in 'Liangyoupeijiu'. No severe chloroplast ultrastructure damage was observed under cold stress, but the number of osmiophilic granules in 'Shanyou63' increased rapidly. The results indicate that compared to 'Shanyou63', 'Liangyoupeijiu' is more chill-resistant at the seedling stage.

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Degradation of photosynthetic activity of saintpaulia leaf by sudden temperature drop

Cited by 9 publications

References 29 publications

Sudden Collapse of Vacuoles in Saintpaulia sp. Palisade Cells Induced by a Rapid Temperature Decrease

Sudden Collapse of Vacuoles in Saintpaulia sp. Palisade Cells Induced by a Rapid Temperature Decrease

The Effect of Decreasing Temperature up to Chilling Values on the in vivo F685/F735 Chlorophyll Fluorescence Ratio in Phaseolus vulgaris and Pisum sativum: The Role of the Photosystem I Contribution to the 735 nm Fluorescence Band¶

Effects of low temperature on photosynthetic characteristics in the super-high-yield hybrid rice ‘Liangyoupeijiu’ at the seedling stage

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