Photosynthesis, Respiration, and Long-Distance Transport

Lambers, Hans; Chapin, F. Stuart; Pons, Thijs L.

doi:10.1007/978-1-4757-2855-2_2

Cited by 55 publications

(42 citation statements)

References 290 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As a result of the constant difference in water vapour concentration between the leaf and the air, transpiration and stomatal conductance are linear related [52]. An improved and higher WUE can be achieved either through lower stomatal conductance and transpiration, caused by stomatal closure, or higher photosynthetic capacity or a combination of both [32,53,54].…”

Section: Light Saturated Net Photosynthesismentioning

confidence: 99%

Beneficial effects of zeolites on plant photosynthesis

Smedt¹,

Steppe²,

Spanoghe³

2017

Adv Mater Sci

View full text Add to dashboard Cite

Besides the effect of zeolites against plant diseases and insect pests, zeolites may also have beneficial effects for the treated plant itself. Zeolites are able to adsorb CO2, which may influence photosynthesis. Zeolites may also reduce leaf temperature by reflecting the infrared radiation. These properties lead to a reduction of transpiration rate, which may improve the water-use efficiency, the yield and the fruit quality. In this study, the possible beneficial effects of zeolites on plant growth, dry weight, water uptake and photosynthesis are described. Despite the fact that little or no effects were observed for plant growth, water uptake and dry weight, some effects were noticed for the photosynthesis. A clear trend could mainly be observed for the treated apple trees, i.e. an increase of photosynthesis was observed after treating the apple trees with the zeolites, followed by a decrease after two weeks.

show abstract

Section: Light Saturated Net Photosynthesismentioning

confidence: 99%

Beneficial effects of zeolites on plant photosynthesis

Smedt¹,

Steppe²,

Spanoghe³

2017

Adv Mater Sci

View full text Add to dashboard Cite

show abstract

“…3). This curve can be accurately described by a nonrectangular hyperbola (Leverenz & Jarvis, 1979) of the form θP#k(φIjP max )PjφIP max l 0 Eqn 1a or re-worked as in Lambers et al (1998) :…”

Section: Light and Nitrogen Relationsmentioning

confidence: 99%

“…This mathematical description is useful because its variables, with the exception of θ, have clear physiological meanings and can be used to model photosynthesis ( Fig. 3) (Lambers et al, 1998). The quantum yield (φ) is a measure of the light use efficiency of absorbed quanta, being highest at the lowest irradiances and declining with increasing irradiance (Bjo$ rkman, 1981).…”

Section: Light and Nitrogen Relationsmentioning

confidence: 99%

“…The function of respiration is to convert photoassimilate into substances used for growth and maintenance, to energize these two processes, and to energize transport and nutrient assimilation processes (Amthor, 1995 ;Lambers et al, 1998). During respiration, and growth, CO # is released as a byproduct.…”

Section: Respirationmentioning

confidence: 99%

“…The fraction of carbon and assimilate in the photoassimilate that is ' lost ' during respiratory metabolism is dependent on the pathways of respiration, the mitochondrial ADP : O ratio, and substrate composition (Amthor, 1995). A comprehensive review on plant respiration was recently presented by Lambers et al (1998), and because plant and fungal respiration seem to be fundamentally similar (Fahselt, 1994), only a few specific characteristics of lichen respiration are given here.…”

Section: Respirationmentioning

confidence: 99%

See 2 more Smart Citations

Tansley Review No. 117

Palmqvist

2000

New Phytologist

221

View full text Add to dashboard Cite

Lichens are nutritionally specialized fungi (the mycobiont component) that derive carbon and in some cases nitrogen from algal or cyanobacterial photobionts. The mycobiont and photobiont live together in an integrated thallus, but they lack specific tissue for the transport of metabolites and resources between them. Carbon is acquired through photosynthesis in the photobiont, which is active when the lichen is wet and exposed to light. Lichen photosynthesis is limited primarily by water, light and nitrogen, but can also be constrained by slow diffusion of CO # within the wet thallus. The assimilated carbon is exported from photobiont to mycobiont, which also predominates in terms of biomass, and apparently regulates the size of the photobiont population. It has therefore generally been assumed that most of the carbon is used for growth and maintenance of the fungal hyphae. However, the extent of photobiont respiration in relation to mycobiont respiration has seldom been quantified ; neither do we know the pool sizes of various carbon sinks within lichens. Owing to this lack of fundamental data we do not know whether, or how, carbohydrate resources are regulated to maintain an optimal balance between energy input and expenditures in these symbiotic organisms. This review summarizes data on growth, carbon gain and carbon expenditures in lichens, with particular emphasis on factors determining the photosynthetic capacity of their photobionts. An attempt is made to introduce an economic analysis of lichen growth processes, a view that has often been adopted in studies of higher plants. Areas in which more data are needed for the construction of a model on ' lichen resource allocation patterns ' are discussed.

show abstract

Leaf temperatures mediate alpine plant communities’ response to a simulated extended summer

Wentz

Neff

Suding

2018

Ecology and Evolution

View full text Add to dashboard Cite

We use a quantitative model of photosynthesis to explore leaf‐level limitations to plant growth in an alpine tundra ecosystem that is expected to have longer, warmer, and drier growing seasons. The model is parameterized with abiotic and leaf trait data that is characteristic of two dominant plant communities in the alpine tundra and specifically at the Niwot Ridge Long Term Ecological Research Site: the dry and wet meadows. Model results produce realistic estimates of photosynthesis, nitrogen‐use efficiency, water‐use efficiency, and other gas exchange processes in the alpine tundra. Model simulations suggest that dry and wet meadow plant species do not significantly respond to changes in the volumetric soil moisture content but are sensitive to variation in foliar nitrogen content. In addition, model simulations indicate that dry and wet meadow species have different maximum rates of assimilation (normalized for leaf nitrogen content) because of differences in leaf temperature. These differences arise from the interaction of plant height and the abiotic environment characteristic of each plant community. The leaf temperature of dry meadow species is higher than wet meadow species and close to the optimal temperature for photosynthesis under current conditions. As a result, 2°C higher air temperatures in the future will likely lead to declines in dry meadow species’ carbon assimilation. On the other hand, a longer and warmer growing season could increase nitrogen availability and assimilation rates in both plant communities. Nonetheless, a temperature increase of 4°C may lower rates of assimilation in both dry and wet meadow plant communities because of higher, and suboptimal, leaf temperatures.

show abstract

Photosynthesis, Respiration, and Long-Distance Transport

Cited by 55 publications

References 290 publications

Beneficial effects of zeolites on plant photosynthesis

Beneficial effects of zeolites on plant photosynthesis

Tansley Review No. 117

Leaf temperatures mediate alpine plant communities’ response to a simulated extended summer

Contact Info

Product

Resources

About