Photosynthetic activity of vascular bundles in Plantago media leaves

Miszalski, Zbigniew; Skoczowski, Andrzej; Silina, Ekaterina V.; Дымова, О. В.; Golovko, T. K.; Kornaś, Andrzej; Strzałka, Kazimierz

doi:10.1016/j.jplph.2016.06.012

Cited by 14 publications

(8 citation statements)

References 53 publications

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“…This should be explained by the susceptibility of PItotal to changes in the antenna properties manifested in the efficiency of electron trapping and their transport outside of QA (Kalaji et al 2014). Until now, this process has been observed in P. bifurcatum and other species under environmental stress (Živčák et al 2008, Miszalski et al 2016, Oliwa and Skoczowski 2019a.…”

Section: Discussionmentioning

confidence: 94%

Special issue in honour of Prof. Reto J. Strasser - Sporulation modifies the photosynthetic activity of sporotrophophyll leaves of Platycerium bifurcatum

Skoczowski¹,

Rut²,

Kornaś³

2020

Photosynt.

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Platycerium bifurcatum is an epiphytic fern, occurring mainly in the forests of Australia and New Guinea. The location and spatial structure of its sporangia makes this fern a unique research model for physiological experiments. Our research aimed to determine changes in photosynthesis in the sporophilic and trophophilic parts of P. bifurcatum leaves during spore tying and maturation. For this purpose, the JIP-test and gas-exchange measurements of leaves were performed. In the study, we showed that changes typical of plant responses to stress factors also happened at critical periods in plant ontogenesis (e.g., in the generative phase) not related to environmental stress. Measurements of chlorophyll a fluorescence kinetics, the intensities of net/gross photosynthetic rate, and the respiration of sporotrophophilic leaves indicated that the intensities of these processes were related to the location of spores and to the stage of sporulation. The results are the first to describe the photosynthesis process and dark respiration of leaves during sporulation in ferns.

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Section: Discussionmentioning

confidence: 94%

Special issue in honour of Prof. Reto J. Strasser - Sporulation modifies the photosynthetic activity of sporotrophophyll leaves of Platycerium bifurcatum

Skoczowski¹,

Rut²,

Kornaś³

2020

Photosynt.

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“…Using photosynthetic carbon isotope discrimination it is possible to distinguish tissues that use mostly phosphoenolpyruvate carboxylase (PEPC) for CO 2 prefixation (β-carboxylation) from those which most of CO 2 fixed with RubisCO. Non-typical photosynthetic green tissues (stems or veins) or typical heterotrophic tissues tend to be enriched (less negative discrimination factor) in δ 13 C compared with leaves [ 26 ] and in such tissues PEPC can be somehow more intensively involved in biomass building [ 27 , 28 ]. Differences in δ 13 C discriminations indicate more heterotrophic character of stems compared to leaves and also stimulating role of Epichloë infection on CO 2 fixation with RubisCO (ribulose-1,5-bisphosphate carboxylase/oxygenase) visible in leaves and stems as well.…”

Section: Discussionmentioning

confidence: 99%

Cooling effect of fungal stromata in the Dactylis-Epichloë-Botanophila symbiosis

Lembicz

Miszalski

Kornaś

et al. 2021

Communicative & Integrative Biology

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The stromata of Epichloë fungi are structures covering part of the stem of grasses. Under the fungal layer, still green tissues of the plant survive, although the development of the new leaves is inhibited. Stromata are the places where conidia and ascospores develop. Also, here Botanophila flies dine on mycelium, lay the eggs, defecate, and the larvae develop. The interaction of the three symbionts was analyzed concerning the organisms’ adaptation to understand the differences in physiology and ecology of this microenvironment that support stable symbiosis spreading presently in Europe since the beginning of the XXI century. For analysis of the infrared radiation emitted by stromata, a high-resolution infrared camera FLIR E50 was used. The visualization of stromata temperature profiles was shown in the form of pseudo-colored (false) infrared images. The 13 C discrimination was used to characterize photosynthesis of the plant tissue enclosed within the stromata. The stromata had a substantially lower temperature than the green plant tissues. The difference reached ~5.6°C during midday hours, whereas it was smaller in the evening, reaching only ~3.6°C. The mycelium of Epichloë cultivated on agar showed about 2°C lower temperature in comparison to the surrounding. The plant tissues enclosed within the stroma were photosynthetically active, although this activity was of phosphoenolpyruvate carboxylase (PEPC) type and less involved in heat dissipation during the day. The stromata, built by fungal hyphae, on which fungal reproductive structures develop, form a cool shelter. This shelter provides a place for the larvae of Botanophila flies.

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“…They are reflected in the shape of the Chl a FL curve. Therefore, methods based on the OJIP test are often used in ecophysiological studies to assess the condition of the photosynthetic apparatus, especially PSII (Miszalski et al 2016).…”

Section: Analysis Of Ojip Curvesmentioning

confidence: 99%

Different response of photosynthetic apparatus to high-light stress in sporotrophophyll and nest leaves of Platycerium bifurcatum

Oliwa¹,

Skoczowski²

2019

Photosynt.

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Tropical forest deforestation leads to sudden changes in light conditions, which is a problem for the development of epiphytes, such as Platycerium bifurcatum. High light (HL) results in disturbances of the light phase of photosynthesis and changes in leaf pigment composition. The current study determined differences in fast chlorophyll fluorescence transients and changes in radiation reflectance in sporotrophophylls and nest leaves after one and seven days of HL. In addition, a spectral range was identified with the largest change in reflectance induced by HL. Sporotrophophylls exhibited a stronger response of the photosynthetic apparatus to photoinhibition than that of the nest leaves. Moreover, in sporotrophophylls, disorders of electron transport were visible in the whole O-P phase, and in the nest leaves mainly in the O-J phase. Higher accumulation of photoprotective compounds in sporotrophophylls underlined a different reaction to HL.

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Photosynthetic activity of vascular bundles in Plantago media leaves

Cited by 14 publications

References 53 publications

Special issue in honour of Prof. Reto J. Strasser - Sporulation modifies the photosynthetic activity of sporotrophophyll leaves of Platycerium bifurcatum

Special issue in honour of Prof. Reto J. Strasser - Sporulation modifies the photosynthetic activity of sporotrophophyll leaves of Platycerium bifurcatum

Cooling effect of fungal stromata in the Dactylis-Epichloë-Botanophila symbiosis

Different response of photosynthetic apparatus to high-light stress in sporotrophophyll and nest leaves of Platycerium bifurcatum

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