Differential accumulation of photosynthetic proteins regulates diurnal photochemical adjustments of PSII in common fig ( Ficus carica  L.) leaves

Mlinarić, Selma; Dunić, Jasenka Antunović; Babojelić, Martina Skendrović; Cesar, Vera; Lepeduš, Hrvoje

doi:10.1016/j.jplph.2016.12.002

Cited by 35 publications

(26 citation statements)

References 61 publications

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“…A similar finding was reported in droughttolerant barley leaves under drought stress (Oukarroum et al 2007). Mlinarić et al (2017) reported that negative L-band in mature leaf compared to positive L-band in young leaf of common fig was associated with a higher utilization efficiency of excitation energy. As a probe of PSII donor side, the positive K-step was proposed to be related with the inactivation of oxygen-evolving system (Strasser et al 2004).…”

Section: Discussionsupporting

confidence: 84%

Special issue in honour of Prof. Reto J. Strasser - The photosynthetic performance of two Citrus species under long-term aluminum treatment

Zhang¹,

Li²,

Chen³

et al. 2020

Photosynt.

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The effect of Al stress on leaf pigment contents, chlorophyll (Chl) a fluorescence transient, and leaf gas exchange of Citrus sinensis and Citrus grandis were investigated in sandy culture with nutrient solution (control) or supplemented by 0.5 mM AlCl3•6H2O (Al toxic) for 54 weeks. We found a significant decline of Chl a, carotenoids (Car), Ch a/b, and Car/Chl (a+b) in C. grandis caused by Al stress. Except the significant increase of Car/Chl (a+b), no remarkable difference was found in C. sinensis. The Al-induced downregulation of CO2 assimilation was related to the imbalance of reduction and oxidation of primary quinone acceptor of PSII in two Citrus species. Compared to C. grandis, increasing ratio of Car/Chl (a+b) for photooxidation protection and decreasing inhibition of electron transfer contributed to electron conversion efficiency maintenance of PSII under Al stress in C. sinensis, a relatively Al-tolerant species.

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Section: Discussionsupporting

confidence: 84%

Special issue in honour of Prof. Reto J. Strasser - The photosynthetic performance of two Citrus species under long-term aluminum treatment

Zhang¹,

Li²,

Chen³

et al. 2020

Photosynt.

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“…Likely, the observed decrease of pigment content in CY needles served as protective mechanism against possible photo damage that might occur due to high levels of irradiation in June. Such a conclusion agrees with our previous investigations of different woody species (Lepeduš et al 2011;Mlinarić et al 2017), where we observed similar relations between young developing and mature leaves with respect to chlorophyll accumulation. There we reported that lower chlorophyll content is correlated with accumulation of photosynthetically essential proteins, but also with activity of important antioxidative enzymes.…”

Section: Resultssupporting

confidence: 93%

Anatomy, chlorophyll content and photosynthetic performance in current-year and previous-year Aleppo pine (Pinus halepensis Mill.) needles

et al. 2020

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Aleppo pine (Pinus halepensis) is a widespread Mediterranean woody species. Needles usually fall off the tree after the second year, which can be the reason for substantial crown defoliation under extreme environmental stress. The aim of the present investigation was to compare the anatomy, chlorophyll content and photosynthetic performance in current-year (CY) and previous-year (PY) Aleppo pine needles. Chlorophyll concentrations were determined spectrophotometrically, while photosynthetic performance was determined by measuring the increase in chlorophyll a fluorescence (the JIP test). The obtained results revealed that concentrations of chlorophylls a and b were almost twice as great in PY needles as in CY ones. The chlorophyll a to b ratio and values of the maximum quantum yield of photosystem II (Fv/Fm) showed no statistically significant difference between CY and PY needles. However, the performance index (PI ABS) was significantly higher in CY needles compared to PY ones. Analysis of PI ABS components revealed that CY needles had increased electron transport beyond the primary electron acceptor, Q A-, which was associated with a lower value of variable fluorescence at 2 ms (V J) in comparison with PY needles. Also, some differences were observed in needle anatomy. Current-year needles had an increased proportion of mesophyll tissue, together with decreased proportions of vascular cylinder and resin duct areas. Also, many more starch grains were present in PY than in CY needles. Based on the presented results, it can be concluded that despite considerably lower chlorophyll content, CY needles exhibited photosynthetic performance better than that of older needles, which is an unusual phenomenon in woody species.

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“…Fv/Fm is considered as a sensitive indicator for describing the capacity of photosynthetic apparatus to perform photosynthesis (Mlinarić et al 2017). Our study showed that under Pb and Zn treatments the Fv/Fm was significantly lower than in the control (Table 1), indicating the damage of PSII under heavy metal stress (Prieto et al 2009, Bayçu et al 2017.…”

Section: Discussionmentioning

confidence: 73%

Effects of Pb and Zn toxicity on chlorophyll fluorescence and biomass production of Koelreuteria paniculata and Zelkova schneideriana young plants

Huang¹,

Zhu²,

Yan³

et al. 2019

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The influence of Pb and Zn on chlorophyll (Chl) fluorescence and plant growth of one-year-old Koelreuteria paniculata and Zelkova schneideriana young plants was investigated. Pb and Zn contents in plant organs were measured. The results showed Pb and Zn stress decreased photochemical quenching and quantum efficiency of PSII, but increased energy dissipation in the tested plants. At the same time, maximum net photosynthetic rate, maximum quantum use efficiency, and organ biomass were reduced. Under the same concentration of heavy metals, the damage induced by Zn toxicity was more serious than that of Pb. Pb was less accumulated in leaves, with a mild effect on photosynthesis. Zn was mostly accumulated in leaves and strongly disturbed chloroplast functioning and affected photosynthesis. Pb and Zn had different pathway to influence biomass production, and both tested plants might use different mechanisms of action for heavy metal stress resistance.

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Differential accumulation of photosynthetic proteins regulates diurnal photochemical adjustments of PSII in common fig ( Ficus carica L.) leaves

Cited by 35 publications

References 61 publications

Special issue in honour of Prof. Reto J. Strasser - The photosynthetic performance of two Citrus species under long-term aluminum treatment

Special issue in honour of Prof. Reto J. Strasser - The photosynthetic performance of two Citrus species under long-term aluminum treatment

Anatomy, chlorophyll content and photosynthetic performance in current-year and previous-year Aleppo pine (Pinus halepensis Mill.) needles

Effects of Pb and Zn toxicity on chlorophyll fluorescence and biomass production of Koelreuteria paniculata and Zelkova schneideriana young plants

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