Chlorophyll a fluorescence of typical desert plant Alhagi sparsifolia Shap. at two light levels

Li, L.; Li, X. Y.; Zeng, Faliang; Lin, Lijin

doi:10.1007/s11099-016-0195-9

Cited by 7 publications

(4 citation statements)

References 25 publications

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“…But the δ Ro (the efficiency/probability with which an electron from the intersystem electron carrier s was transferred to reduce end electron acceptors at the PSI acceptor side) and φ Ro (the quantum yield for the reduction of the end electron acceptors at the PSI acceptor side) of the plants grown in intercropping were lower than those of the monocropped plants ( Table 5 ). And this indicated that the quantum efficiency from PSII to PSI in intercropping were lower than that in monocropping, electron transport between Q B and PSI and the acceptor side of PSI might be inhibited ( Wang et al, 2006 ; Li et al, 2014 ; Li L. et al, 2016 ; Zivcak et al, 2014 ). Intercropped soybean plants increased the photochemical efficiency of PSII, but the electron transport was limited and the accepted capacity of PSI was low.…”

Section: Discussionmentioning

confidence: 99%

“…The higher W k in intercropping demonstrated that the donor side of PSII was seriously inhibited compared to monocropping in high radiation at noon ( Chen et al, 2004 ; Li L. et al, 2016 ). The higher ψ Eo and φ Eo at 10:30 suggested that the quantum efficiencies in PSII electron transfer chain of soybean plants grown in intercropping were enhanced compared to the monocropped soybean.…”

Section: Discussionmentioning

confidence: 99%

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Photosynthetic Response of Soybean Leaf to Wide Light-Fluctuation in Maize-Soybean Intercropping System

et al. 2017

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In maize-soybean intercropping system, soybean plants will be affected by the wide light-fluctuation, which resulted from the shading by maize plants, as the shading of maize the light is not enough for soybean in the early morning and late afternoon, but at noon, the light is strong as the maize shading disappeared. The objective of this study is to evaluate the photosynthetic response of soybean leaf to the wide light-fluctuation. The data of diurnal variation of photosynthetic characters showed that the photosynthetic rate of intercropped soybean was weaker than that of monocropped soybean. The chlorophyll content, ratio of chlorophyll a/b, and AQE (apparent quantum efficiency) were increased and Rd (dark respiration rate) was decreased for the more efficient interception and absorption of light and carbon gain in intercropping. δRo (The efficiency/probability with which an electron from the intersystem electron carriers was transferred to reduce end electron acceptors at the PSI acceptor side) and φRo (the quantum yield for the reduction of the end electron acceptors at the PSI acceptor side) in intercropped soybean leaf were lower compared to those in monocropped one, which showed that the acceptor side of PSI might be inhibited, and also it was the main reason that soybean plants showed a low photosynthetic capacity in intercropping. ψEo (the efficiency/probability with an electron moves further than QA-) in monocropping and intercropping decreased 5.8, and 35.7%, respectively, while φEo (quantum yield for electron transport) decreased 27.7 and 45.3% under the high radiation at noon, which suggested that the acceptor side of PSII was inhibited, while the NPQ became higher. These were beneficial to dissipate excess excitation energy in time, and protect the photosynthetic apparatus against photo-damage. The higher performance index on the absorption basis (PIABS) and lower δRo, φRo, ψEo, and φEo of intercropped soybeans compared to monocropping under high radiation indicated that the electron transfer of intercropped soybean was inhibited more seriously and intercropped soybean adjusted the electron transport between PSII to PSI to adapt the light-fluctuation. Higher NPQ capacity of intercropped soybeans played a key role in keeping the leaf with a better physiological flexibility under the high radiation.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Photosynthetic Response of Soybean Leaf to Wide Light-Fluctuation in Maize-Soybean Intercropping System

et al. 2017

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“…At low temperatures, excessive light is expected to further decrease photosynthetic capacity (Baker 1994). Although previous studies mainly focused on the impacts of either light intensity or temperature on plants (Allen and Ort 2011, Li et al 2016, Pettigrew 2016, Riikonen et al 2016, little is known about their combined effects on the growth and photosynthesis of woody plants (Štroch et al 2010). Moreover, most experiments were carried out with tropical species that are not acclimatized to stressful environments (Huang et al 2010(Huang et al , 2012Allen andOrt 2011, Hou et al 2016).…”

Section: --mentioning

confidence: 99%

Combined stresses of light and chilling on photosynthesis of Fraxinus mandschurica seedlings in northeastern China

Li¹,

Jin²,

Zhu³

et al. 2018

Photosynt.

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The chilling and light stresses were experimentally created to explore photosynthesis of Fraxinus mandshurica seedlings in northeast China. Net photosynthetic rate, stomatal conductance, and transpiration rate decreased significantly with the decline of temperature and light. Significant interaction effects of light and chilling were observed on gas exchange of photosynthesis. The minimal fluorescence yield of the dark-adapted state (F 0) increased with increasing light and decreasing temperature. Both high and low light stresses induced the decreases of the maximal quantum yield of PSII photochemistry (F v /F m), photochemical quenching coefficient (q P), nonphotochemical quenching (NPQ), and electron transport rate. Decline of F v /F m and increased F 0 were observed under decreasing temperatures. Decreased NPQ and q P at frost temperature suggest that F. mandschurica failed to dissipate excess light energy. No interactive effects of chilling and light on chlorophyll fluorescence parameters suggests that F. mandschurica seedlings might be adapted to combined stresses of light and chilling.

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“…Much research has been done on the growth response of plants to light quality 22 , and its effect on plant photosynthesis 23 . Hyo et al 24 investigated the effect of LED light on strawberries in the greenhouse and growth chamber.…”

Section: Introductionmentioning

confidence: 99%

The effect of supplementary light on the photosynthetic apparatus of strawberry plants under salinity and alkalinity stress

Shamsabad

Esmaeilizadeh

Roosta

et al. 2022

Sci Rep

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Considering the destructive effect of stresses on the photosynthetic apparatus of plants and the important role of light in photosynthesis, we investigated the effect of complementary light on the photosynthetic apparatus under salinity and alkalinity stress conditions. Light-emitting diodes (LEDs) in monochromatic blue (460 nm), monochromatic red (660 nm), dichromatic blue/red (1:3), white/yellow (400–700 nm) at 200 μmol m−2 S−1, and without LED treatment were used. The stress treatments were in three stages: Control (no stress), Alkalinity (40 mM NaHCO3), and Salinity (80 mM NaCl). Our results showed that salinity and alkaline stress reduced CO2 assimilation by 62.64% and 40.81%, respectively, compared to the control treatment. The blue light spectrum had the highest increase in water use efficiency (54%) compared to the treatment without supplementary light. Under salinity and alkalinity stress, L, K, and H bands increased and G bands decreased compared to the control treatment, with blue/red light causing the highest increase in L and K bands under both stress conditions. In salinity and alkalinity stress, white/yellow and blue/red spectra caused the highest increase in H bands. Complementary light spectra increased the G band compared to the treatment without complementary light. There was a significant decrease in power indices and quantum power parameters due to salt and alkalinity stress. The use of light spectra, especially blue, red, and blue/red light, increased these parameters compared with treatment without complementary light. Different light spectra have different effects on the photosynthetic apparatus of plants. It can be concluded that using red, blue spectra and their combination can increase the resistance of plants to stress conditions and be adopted as a strategy in planting plants under stress conditions.

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Chlorophyll a fluorescence of typical desert plant Alhagi sparsifolia Shap. at two light levels

Cited by 7 publications

References 25 publications

Photosynthetic Response of Soybean Leaf to Wide Light-Fluctuation in Maize-Soybean Intercropping System

Photosynthetic Response of Soybean Leaf to Wide Light-Fluctuation in Maize-Soybean Intercropping System

Combined stresses of light and chilling on photosynthesis of Fraxinus mandschurica seedlings in northeastern China

The effect of supplementary light on the photosynthetic apparatus of strawberry plants under salinity and alkalinity stress

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