Photosynthetic electron transport rate (ETR) in the littoral herb Launaea sarmentosa known as mole crab in Thailand

Ritchie, Raymond J.; Sma-Air, Suhailar; Limsathapornkul, Napapit; Pranama, Nedrangsee; Nakkeaw, Meakha; Kaewnam, Pramort; Thongchumnum, Pun; Kanjanachatree, Kanika

doi:10.1007/s11120-021-00826-2

Cited by 6 publications

(9 citation statements)

References 25 publications

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“…The sustainability of crop production and the implications of the latest scientific knowledge on plant regulatory mechanisms must also be among the most important targets for innovation in photosynthesis research (Allakhverdiev 2020a,b;Ritchie et al 2021). Additionally, along with climate change challenges, the problem of arable land shortages has also arisen.…”

mentioning

confidence: 99%

Crop photosynthesis for the twenty-first century

Brestič

Yang

et al. 2021

Photosynth Res

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mentioning

confidence: 99%

Crop photosynthesis for the twenty-first century

Brestič

Yang

et al. 2021

Photosynth Res

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“…A similar phenomenon was noted for the resurrection plant Davallea angustata [49] : POER max was appeared to be di-rectly proportional to E opt resulting in an essentially constant α 0 on a Chl a basis over a daily cycle. Such an observation should not be taken as a universal: in another study it has been found that the POER max and E opt in the littoral weed species, Launaea sarmentosa exhibits no such close correlation [64] .…”

Section: Discussionmentioning

confidence: 95%

“…It is found experimentally that if fluorescence yield (Y) is plotted against irradiance (E) it follows a simple exponential decay function of the form y = e -kx [18,[39][40][41][42]48,49,63,64] . The WinControl software calculates relative ETR (rETR) based on a default leaf absorptance factor (Abt F = 0.84).…”

Section: Calculation Of Photosynthetic Electron Transport Rates and O...mentioning

confidence: 99%

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Photosynthesis of Submerged and Surface Leaves of the Dwarf Water Lily (Nymphoides aquatica) Using PAM Fluorometry

Ritchie

2022

j. of bot. res.

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Dwarf Water Lilies (Nymphoides aquatica (J.F. Gmel) Kuntze have floating and submerged leaves. Some submerged aquatic vascular plants have a form of CAM (Crassulacean Acid Metabolism) called Submerged Aquatic Macrophyte (SAM) metabolism. Blue-diode based PAM technology was used to measure the Photosynthetic Oxygen Evolution Rate (POER: 1O2 ≡ 4e– ). Optimum Irradiance (Eopt), maximum POER (POERmax) and quantum efficiency (α0) all vary on a diurnal cycle. The shape of the POER vs. E curves is different in seedling, submerged and surface leaves. Both Eopt and POERmax are very low in seedling leaves (Eopt ≈ 104 μmol photon m–2 s–1, PPFD; POERmax ≈ 4.95 µmol O2 g–1 Chl a s–1), intermediate in mature submerged leaves (Eopt ≈ 419 µmol photon m–2 s–1 PPFD, POERmax ≈ 38.1 µmol O2 g–1 Chl a s–1) and very high in surface leaves (Eopt ≈ 923 µmol photon m–2 s–1 PPFD, POERmax ≈ 76.1 µmol O2 g–1 Chl a s–1). Leaf titratable acid (C4 acid pool) is too small (≈20 to 50 mol H+ m–3) to support substantial SAM metabolism. Gross daily photosynthesis of surface leaves is ≈3.71 g C m–2 d–1 in full sun and as much as 1.4 gC m–2 d–1 in shaded submerged leaves. There is midday inhibition of photosynthesis.

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“…Maximal fluorescence yield of the light-adapted state (Fmꞌ) and minimal fluorescence yield of the light-adapted state (F0ꞌ) were measured in the light-adapted state, which was used to calculate Y(Ⅱ), qP, NPQ, and Y(NPQ) (Han et al 2017). ETR was automatically calculated using WinControl software (v2.08 and v2.13; Heinz Walz GmbH, Effeltrich, Germany) under the standard default settings for rapid light curves (Ritchie et al 2021).…”

Section: Methodsmentioning

confidence: 99%

Exogenous calcium-alleviating effect on sodium salt-induced phytotoxicity associated with changes in photosynthetic characteristics of wheat seedlings

ZHANG,

LIU,

WANG

et al. 2024

Photosynt.

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rate; EGTA -ethylene glycol tetraacetic acid; ETR -electron transport rate; F0 -minimal fluorescence yield of the dark-adapted state; F0' -minimal fluorescence yield of the light-adapted state; FM -fresh mass; Fm -maximum fluorescence yield of the dark-adapted state; Fm' -maximal fluorescence yield of the light-adapted state; Fs -the steady-state Chl fluorescence yield; Fv -variable fluorescence; Fv/Fm -maximal quantum yield of PSII photochemistry; gs -stomatal conductance; NPQ -nonphotochemical quenching; PN -net photosynthetic rate; qP -photochemical quenching; ROS -reactive oxygen species; Y(Ⅱ) -the actual photochemical efficiency; Y(NPQ) -the electron yield of regulatory energy dissipation.

show abstract

Photosynthetic electron transport rate (ETR) in the littoral herb Launaea sarmentosa known as mole crab in Thailand

Cited by 6 publications

References 25 publications

Crop photosynthesis for the twenty-first century

Crop photosynthesis for the twenty-first century

Photosynthesis of Submerged and Surface Leaves of the Dwarf Water Lily (Nymphoides aquatica) Using PAM Fluorometry

Exogenous calcium-alleviating effect on sodium salt-induced phytotoxicity associated with changes in photosynthetic characteristics of wheat seedlings

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