Stomatal control partly explains different photosynthetic characteristics inHelianthus laetifloraandH. annuus
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چکیده
منابع مشابه
Photosynthetic performance of an Arabidopsis mutant with elevated stomatal density (sdd1-1) under different light regimes.
In the Arabidopsis mutant sdd1-1, a point mutation in a single gene (SDD1) causes specific alterations in stomatal density and distribution. In comparison to the wild type (C24), abaxial surfaces of sdd1-1 rosette leaves have about 2.5-fold higher stomatal densities. This mutant was used to study the consequence of stomatal density on photosynthesis under various light regimes. The increased st...
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Physiological control of stomatal conductance (Gs) permits plants to balance CO2-uptake for photosynthesis (PN) against water-loss, so optimizing water use efficiency (WUE). An increase in the atmospheric concentration of carbon dioxide ([CO2]) will result in a stimulation of PN and reduction of Gs in many plants, enhancing carbon gain while reducing water-loss. It has also been hypothesized th...
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Introduction Conclusions References
متن کاملThe effect of different concentrations of pyrene on photosynthetic pigment content and antioxidant enzymes activity in sunflower (Helianthus annuus)
World industrialization and population growth are the main reasons for the increase in environmental contamination with aromatic hydrocarbons. The presence of these compounds in the environment leads to a variety of stresses in plants and finally reduces their growth. Pyrene is one of the major toxic contaminants belonging to polycyclic aromatic hydrocarbons. Hence, in this research, the effect...
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quapin oak (Q. muehlenbergii Engl.) leaves were exposed to high temperatures at various photosynthetic photon flux densities under laboratory conditions to determine if species-specific responses to these factors were consistent with the distribution of these oaks in gallery forests in the tallgrass prairies of northeastern Kansas, USA. Measurements of the ratio of chlorophyll fluorescence decr...
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ژورنال
عنوان ژورنال: New Zealand Journal of Crop and Horticultural Science
سال: 2009
ISSN: 0114-0671,1175-8783
DOI: 10.1080/01140670909510247