Effects of nitrogen supply on rates of photosynthesis and respiration in plants ...

  • 764 Pages
  • 1.59 MB
  • English
n.p. , [Chicago
Photosynthesis., Plants -- Respiration., Nitr
Statementby Karl Clemens Hamner ...
LC ClassificationsQK882 .H2 1935
The Physical Object
Pagination[1], 744-764 p.
ID Numbers
Open LibraryOL6346020M
LC Control Number36033169

In every case the addition of nitrates to plants high in reserve carbohydrates caused an increase in respiration, the greater such reserve the mor Effects of Nitrogen Supply on Rates of Photosynthesis and Respiration in Plants | Botanical Gazette: No 4Cited by: Effects of nitrogen supply on rates of photosynthesis and respiration in plants.

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Find more information about: OCLC Number: Notes. EFFECTS OF NITROGEN SUPPLY ON RATES OF PHOTOSYNTHESIS AND RESPIRATION IN PLANTS CONTRIBUTIONS FROM THE HULL BOTANICAL LABORATORY KARL C. HAMNER Introduction There is a conspicuous lack of recorded results of experiments to determine the effect of variations in the nutrient supply of plants on their photosynthetic and respiratory rates.

Nitrogen (N) is a major component of the photosynthetic apparatus and is widely used as a fertilizer in crops. However, to the best of our knowledge, the dynamic of photosynthesis Cited by:   Taking all together, high nitrogen supply had a significant stimulatory effect on shoot dry matter production and on photosynthetic activity of sunflower plants.

Moreover, the higher rates of photosynthesis were accompanied by an increase in leaf dry matter, thus increasing the total assimilatory by: Rubisco activity was positively correlated with the initial slope of the PN/Ci response ting that N supplement improved photosynthesis by enhancing carboxylation and CO2 diffusion, photosynthetic capacity increased with N supply up to g.

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Thereafter, the rate of increase declined with any further increase in N supply. Finally, the interactions between nitrogen metabolism, respiration and photosynthesis are also reviewed. Respiration provides the redox equivalents and carbon skeletons necessary for nitrogen assimilation in the light.

The inhibitory effect that intermediary nitrogen oxides (NO x produced during light to dark transitions) have on mitochondrial electron transport via the cytochrome pathway is discussed. To identify the effect of nitrogen (N) nutrition on the dynamic photosynthesis of rice plants, a pot experiment was conducted under two N conditions.

The leaf. When measured at their respective growth temperature, the rates of photosynthesis were significant higher in C-than C-grown algae, while the rates of respiration were identical between C.

Too little nitrogen often results in Effects of nitrogen supply on rates of photosynthesis and respiration in plants. book leaves that are usually yellow in color, which is symptomatic of slow photosynthesis rates, while too much nitrogen can prevent other essential nutrients from being absorbed by the plant.

This is why maintaining just the right balance of nitrogen is an essential part of growing a healthy plant. Plants make food using photosynthesis. This needs light, carbon dioxide and water. It produces glucose, and oxygen as a by-product.

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Leaves are adapted to carry out photosynthesis. Photosynthesis happens when green plants and photosynthetic algae use sunlight to form chemical reactions that result in the production of carbohydrates (sugars) and the release of oxygen.

In order to go through photosynthesis, "plants must possess chlorophyll (molecule that absorbs sunlight) and have a supply of carbon dioxide and water. Ecosystem photosynthesis regulates soil respiration on a diurnal scale with a short‐term time lag in a coastal wetland.

Soil Biology and Biochemistry, 68, 85– Han Y., Zhang Z., Wang C., Jiang F., & Xia J. Effects of mowing and nitrogen addition on soil respiration in three patches in old field grassland in Inner Mongolia. Photosynthesis and respiration rates depend on leaf and root morphology and nitrogen concentration in nine boreal tree species differing in relative growth rate P.

Reich Department of Forest Resources, University of Minnesota. Effects of low nitrogen supply on relationships between photosynthesis and nitrogen status at different leaf position in wheat seedlings Article (PDF Available) in Plant Growth Regulation 70(3. The four-way ANOVA of photosynthetic rate (P n) revealed a significant effect of interactions G × N (p = ) and N × T (p = ) (Table 1).At day 0, three genotypes exhibited similar P n rates at HN (HNC and HNS plants) conditions (Figures 2A–C), however, genotypes showed a differential performance under LNC both times (0 and 15 days) Faro showed.

Photosynthesis is the process by which plants convert solar energy into usable energy. Plants use light energy from sun, water and carbon dioxide to form glucose molecules, oxygen and energy (in.

Factors affecting photosynthesis.

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There are several ways of measuring the rate of photosynthesis in the lab. These include: the rate of oxygen. output. The availability of nitrogen (N) and phosphorus (P) for plants are severely restricted, which reduces photosynthesis and growth in most terrestrial ecosystems (Harpole et al.

This thesis investigates how variations in relative availability of N and P influences growth and photosynthesis in silver birch (Betula pendula Roth. The conceptualization of variation of respiration in plants typically leads to the proposal that changes in respiratory rate are due primarily to an altered supply of substrates or an altered demand for respiratory products, namely ATP and carbon skeletons (Cannell and Thornley, ; Noguchi, ).

Reich PB, Walters MB, Tjoelker MG, Vanderklein DW, Buschena C. Photosynthesis and respiration rates depend on leaf and root morphology and nitrogen concentration in nine boreal tree species differing in relative growth rate.

Functional Ecology. ; – Indeed, selection for rate of leaf photosynthesis, given the association between SLA and leaf nitrogen, may result in selecting plants with a high rate of photosynthesis but with small, thick leaves and a low LAI.

Integrative measurements of photosynthesis can be. The photosynthetic capacity of leaves is related to the nitrogen content primarily bacause the proteins of the Calvin cycle and thylakoids represent the majority of leaf nitrogen.

To a first approximation, thylakoid nitrogen is proportional to the chlorophyll content (50 mol thylakoid N mol-1 Chl). Within species there are strong linear relationships between nitrogen and both RuBP carboxylase.

Changes in leaf nitrogen and phosphorus content, photosynthesis, respiration, growth, and resource use efficiency of a rapeseed cultivar as affected by drought and high temperatures.

D.K. Biswas, B.L. Ma, M.J. Morrison. Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, Ottawa, ON K1A 0C6, Canada. s Mahata conducted an experiment in a Randomized Block Design with eight different levels of nitrogen: 75 Kg N /ha (T1), 90 Kg N /ha (T2), Kg N /ha (T3), Kg N /ha (T4), Kg N /ha (T5), Kg N /ha (T6), Kg N /ha (T7) and Kg N /ha (T8) to study the effect of different levels of Nitrogen on Net Photosynthesis Rate Author: Debasis Mahata, Asok Saha, Mayukh Ghosh.

Methods for measuring the rates of photosynthesis and respiration in plants are reviewed. Closed systems that involve manometric techniques, 14 CO 2 fixation, O 2 electrodes and other methods for measuring dissolved and gas phase O 2 are described.

These methods typically provide time‐integrated rate measurements, and limitations to their use. The Effect of Water Stress on Leaf Respiration. Respiration rates are presented per unit leaf area for comparison with rates of A N ().Respiration averaged μmol O 2 m −2 s −1 in control and mildly water-stressed plants.

Under severe water stress, respiration was slightly lower ( μmol O 2 m −2 s −1), although not significantly the best of our knowledge, no.

The effects of nitrogen fertilization on the growth, photosynthetic pigment contents, gas exchange, and chlorophyll (Chl) fluorescence parameters in two tall fescue cultivars (Festuca arundinacea cv. Barlexas and Crossfire II) were investigated under heat stress at 38/30 °C (day/night) for two weeks.

We hypothesised that (1) the growth of clover plants suffering C limitation as a result of low light and N deficiency would be more strongly affected by parasitism, (2) both high light and exogenous N supply would enhance parasite growth rates and (3) parasite attachment would have significant effects on host plant N and C status.

Photosynthesis and respiration. Thermoperiod refers to daily temperature change. Plants grow best when daytime temperature is about 10 to 15 degrees higher than nighttime temperature.

Under these conditions, plants photosynthesize (build up) and respire (break down) during optimum daytime temperatures and then curtail respiration at night.

Respiration occurs in your cells and is fueled by the oxygen you inhale. The carbon dioxide gas you exhale is the result of a completed cycle of cellular respiration.

Only plants can photosynthesize, but both plants and animals depend on respiration to release the chemical potential energy originally captured through photosynthesis.All living things use a process called respiration to get energy to stay alive.

Cellular respiration in plants is the process used by plants to convert nutrients obtained from soil into energy which fuels the plants’ cellular activities. On the other hand, photosynthesis is the process where light energy is converted into chemical energy stored in glucose that can later be used in respiration.

When plants respond by producing anthocyanins for protection, these non-green pigments curb maximum photosynthetic capacity by blocking absorption of light. Phosphorus is involved in the photosynthetic core of any high-yield crop production system, the crucial point at which energy is transformed from light into sugar and then into the myriad.