New Discussion on Boysen-Jensen's Photosynthetic Response Curves Under Plant Canopy and Proposal of Practical Equations for Monitoring and Management of Canopy Photosynthesis

Okamoto, Yuta; Haraguchi, Akira; Suzuki, Toshiharu; Kawano, Tomonori

doi:10.2525/ecb.54.7

Cited by 4 publications

(3 citation statements)

References 22 publications

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“…In fact, most PIkinetic models are derivatives of MME. Today, MMEderived PJE remains the standards for generation of PIcurves in various algae and phytoplankton (Marra et al, 1985;Nagasawa et al, 2015), and also in higher plant communities (Okamoto et al, 2016).…”

Section: Kinetic Handling Of Light Response Curves (Pi-curves)mentioning

confidence: 99%

Possible Roles of Near-infrared Light on the Photosynthesis in <i>Synechocystis</i> sp. PCC6803 under Solar Simulating Artificial Light

Oshita

Suzuki

Kawano

2018

Environmental Control in Biology

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Section: Kinetic Handling Of Light Response Curves (Pi-curves)mentioning

confidence: 99%

Possible Roles of Near-infrared Light on the Photosynthesis in <i>Synechocystis</i> sp. PCC6803 under Solar Simulating Artificial Light

Oshita

Suzuki

Kawano

2018

Environmental Control in Biology

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“…We have previously confirmed that photosynthetic activities in PCC6803 cells under simulated solar light and artificial white light were shown to obey the Platt-Jasby model [ 32 , 33 ]. As discussed earlier [ 34 , 35 ], higher generality can be conferred to the mathematical model by converting the Michaelis-Menten-type equation (11) into a Hill-type equation (12) .…”

Section: Allee Effect In Photo-autotropic Model Organismsmentioning

confidence: 99%

“…where a and x are absorption coefficient and the depth of culture (or density of cells), respectively. In case of terrestrial plant canopy (leaf layers), we have previously made estimation on the sum of light available for photosynthesis within the canopy structure in the form of convergent geometric progression [ 35 ]. Similarly we can summarize the relationship between algal and cyanobacterial densities and collective capturing of incident light as follows:…”

Section: Allee Effect In Photo-autotropic Model Organismsmentioning

confidence: 99%

Hidden Allee effect in photosynthetic organisms

Ohkawa

Takatsuka

Kawano

2020

Communicative & Integrative Biology

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In ecology and population biology, logistic equation is widely applied for simulating the population of organisms. By combining the logistic model with the low-density effect called Allee effect, several variations of mathematical expressions have been proposed. The upper half of the work was dedicated to establish a novel equation for highly flexible density effect model with Allee threshold. Allee effect has been rarely observed in microorganisms with asexual reproduction despite of theoretical studies. According to the exploitation ecosystem hypotheses, plants are believed to be insensitive to Allee effect. Taken together, knowledge on the existence of lowdensity effect in photosynthetic microorganisms is required for redefining the ecological theories emphasizing the photosynthetic organisms as the basis for food chains. Therefore, in the lower half of the present article, we report on the possible Allee effect in photo-autotrophic organisms, namely, green paramecia, and cyanobacteria. Optically monitored growth of green paramecia was shown to be regulated by Allee-like weak low-density effect under photo-autotrophic and photoheterotrophic conditions. Insensitiveness of wild type cyanobacteria (Synechocystis sp. Strain PCC6803) to low-density effect was confirmed, as consistent with our empirical knowledge. In contrast, a mutant line of PCC6803 impaired with a photosynthesis-related pxcA gene was shown to be sensitive to typical Allee's low-density effect (i.e. this line of cells failed to propagate at low cellular density while cells start logarithmic growth at relatively higher inoculating density). This is the first observation that single-gene mutation in an autotrophic organism alters the sensitivity to Allee effect.

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Spatial and temporal variability of carbon budgets of shallow South African subtropical estuaries

Tagliarolo

Scharler

2018

Science of The Total Environment

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New Discussion on Boysen-Jensen's Photosynthetic Response Curves Under Plant Canopy and Proposal of Practical Equations for Monitoring and Management of Canopy Photosynthesis

Cited by 4 publications

References 22 publications

Possible Roles of Near-infrared Light on the Photosynthesis in <i>Synechocystis</i> sp. PCC6803 under Solar Simulating Artificial Light

Possible Roles of Near-infrared Light on the Photosynthesis in <i>Synechocystis</i> sp. PCC6803 under Solar Simulating Artificial Light

Hidden Allee effect in photosynthetic organisms

Spatial and temporal variability of carbon budgets of shallow South African subtropical estuaries

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