Sökning: "stomatal conductance"

Visar resultat 1 - 5 av 10 avhandlingar innehållade orden stomatal conductance.

  1. 1. The influence of climate on ozone risk for vegetation

    Författare :Jenny Klingberg; Göteborgs universitet; []
    Nyckelord :local climate; topography; nocturnal temperature inversions; ozone spring peak; passive diffusion sampler; AOT40; stomatal ozone flux; stomatal conductance; phytotoxic ozone dose; EMEP; MATCH; RCA3; climate change;

    Sammanfattning : Ground-level ozone (O3) is a harmful air pollutant causing reduced crop yield and quality, reduced forest growth and negative effects on human health in large parts of the world. O3 is generally seen as a regional scale air pollution problem, but O3 concentration ([O3]) variation on a smaller geographical scale can be considerable. LÄS MER

  2. 2. Refixation of respiratory CO2 in leaves

    Författare :Diana Eckert; Anna M. Jensen; John Marshall; Linnéuniversitetet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; CO2 refixation; mesophyll resistance; stomatal conductance; Vcmax; leaf anatomy; photosynthesis; forestry; carbon allocation; ecophysiology; Natural Science; Naturvetenskap;

    Sammanfattning : Photosynthesis is a vital process for trees, one in which CO2 plays a major role. At the same time, the tree’s own metabolism produces CO2. LÄS MER

  3. 3. Carbon Dioxide and Water Vapour Exchange within a Norway Spruce Canopy

    Författare :Lasse Tarvainen; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; nitrogen allocation; optimality; stomatal conductance; photosynthesis; resource use efficiency; stem respiration; conifer;

    Sammanfattning : Terrestrial ecosystems can act both as sinks and sources in the global carbon cycle. Forests are an important part of this system and a good understanding of their carbon balance is essential for assessments of the future climate and for evaluating mitigation strategies. LÄS MER

  4. 4. The role of HT1 protein kinase in red light-induced stomatal opening

    Författare :Anastasia Matrosova; Maria Israelsson Nordström; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Plant Physiology; växtfysiologi;

    Sammanfattning : Red light and blue light induce stomatal opening in plants via separate pathways. It is unclear to what extent photosynthetic processes, if any, of guard cells or underlying mesophyll are involved in the red light-induced stomatal response. LÄS MER

  5. 5. New insights into the regulation of stomatal movements by red light, carbon dioxide and circadian rhythms

    Författare :Anastasia Matrosova; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Stomata are small adjustable pores formed by pairs of guard cells that enable gas exchange between leaves and the atmosphere, thus directly affecting water loss and CO₂ uptake in plants. The current work focuses on the regulation of stomatal movements by red light, carbon dioxide and the circadian system and attempts to uncover molecular mechanisms that control guard cell function. LÄS MER