Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 18 of 18 for “"stomatal density"”.
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A putative approach for influencing stomatal density by over-expressing NADP-dependent malic enzyme in arabidopsis
… will examine a possible mode for regulating stomatal density by over-expressing NADP-dependent malic enzyme (NADP-ME), which is thought to deplete the counter-anion pool in Arabidopsis thaliana guard cells. It was hypothesized that over-expressing NADP-ME in Arabidopsis will elevate stomatal …
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Genome editing for engineering resilience to climate changes in grapevine
In Arabidopsis stomatal initiation relies on the transcription factor SPEECHLESS, which is positively regulated by AtEPFL9, a small peptide of the Epidermal Patterning Factor family. In grapevine, two EPFL9 paralogs exist, VviEPFL9-1 and VviEPFL9-2 but despite a structural similarity, their …
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High-throughput phenotyping and genetic mapping of drought stress related traits in setaria (Setaria spp) and rice (Oryza spp)
… traits. Mechanistic modeling indicates that stomatal conductance could be reduced to improve WUE in important C4 crops such as maize, sorghum and sugar cane. In Chapter 2, a novel image capture process was used to evaluate genetic variation in stomatal density, alongside canopy temperature as …
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Variation in leaf attributes and their effects on physiological processes in Leucospermum conocarpodendron L. Buek
… active region (PAR) and greater stomatal density. Leaves from grey individuals were found to have higher specific leaf area (SLA] and a greater size boundary layer. We found no correlation between the transpiration rate and stomatal density, size of the boundary layer and …
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High-throughput phenotyping and physiological genetics of stomatal patterning and water use efficiency in maize
… and efflux of H2O as water transpires. Stomatal patterning on the epidermis (stomatal density, area, size dimensions, degree of clustering etc.) has been speculated to affect gas exchange in different ways, and this thesis aims to examine the characteristics of stomatal pattering in …
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White apple leafhopper affects apple fruit quality and leaf gas exchange
… were located in areas of the leaf with high stomatal density, and were therefore in close proximity to stomata. Groups of cells in the palisade layers were empty, or contained coagulated cell contents; adjacent palisade cells were apparently uninjured. These uninjured cells contained an …
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Leaf Functional Traits as Predictors of Drought Tolerance in Urban Trees
… urban tree species California and analyzed their stomatal length, stomatal density, and LMA. We compared the traits with water use data from the Water Use Classification of Landscape Species to assess possible correlations. All pairwise trait comparisons show significant correlation (<em>P</em> < …
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The role of NAD+ compartmentation and dynamics in Arabidopsis thaliana
… establishment, photosynthesis, metabolism, stomatal density and stomatal conductance. To extend our knowledge on the importance of NAD+ dynamics, we used mutants for NAD+ transport and focused in comprehend: (1) how altered NAD + distribution affects stomatal development in cotyledons, (2) …
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Phylogenetic Analysis of the Genus Pistacia (Anacardiaceae)
… anomocytic stomata. In most species, the stomata density was higher on the abaxial surface than the adaxial. The ratio of abaxial to adaxial stomatal density varied from 0.0 to 1.7. Stomatal distribution may provide insights into how Pistacia species evolve in terms of leaf anatomy and respond to …
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Physiological and agronomic aspects of rice varietal responses to low and high nitrogen management
… treatment. Increased N applications reduced stomatal density. Total stomatal number leaf⁻¹ varied little within cultivars indicating that N fertilization enables the leaf to increase leaf area and thereby disperses the fixed number of stomates. Carbon dioxide exchange rates were higher in the …
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Linking transcript, QTL and association mapping to understand the genetic control of leaf size and shape in Populus
… in leaf shape (leaf ratio), epidermal cell area, stomatal density and stomatal index. Overall a significant positive relationship between latitude of origin and leaf traits was observed with small-leaved genotypes containing fewer epidermal cells observed in the south west (Spain), and …
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Physiological Bases and a Novel Genetic Determinant of Water-Use Efficiency (WUE)
… higher WUE. High-WUE accessions also have lower stomatal density and index and larger thinner leaves than low-WUE accessions. We identified 14,808 single nucleotide polymorphisms (SNPs) between two accessions of <em>E. salsugineum,</em>Shandong (SH) and Yukon (YK), with low and high WUE, …
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Image-based deep learning approaches for plant phenotyping
… root cross-section images, estimation of sorghum stomatal density and area based on microscopic images of leaf surfaces, and estimation of the chalkiness in rice exposed to high night temperature based on images of rice grains. For the root anatomy task, anatomical traits such as root, stele and …
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Exploring variation in water use efficiency in barley (Hordeum vulgare L.) among wild and circadian mutant varieties, and its impact on responses to drought
… variety, Bowman, were interrogated for their stomatal anatomical and physiological performance in relation to water use. In the short-term, Bowman A & gs peaked later, and WUEi earlier in the day than mutants under steady-state light, although dynamic responses to fluctuating light were not …
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Investigations on the influence of CO2 on leaf epidermal development in Arabidopsis thaliana
… to light, humidity and p[CO2]. The number (stomatal density, SD) and proportion (stomatal index, SI) of stomata in the leaf epidermis directly affects the plant’s ability to control gas exchange and these metrics change in response to p[CO2]. In this study, changes in the leaf epidermis …
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DEVELOPMENT AND APPLICATIONS OF SCANNING ELECTROCHEMICAL MICROSCOPY (SECM)
… The cadmium (Cd) effects on photosynthesis and stomatal development of Brassica Juncea L. are studied at a single stomatal level using SECM. Cd-treated plants release less O2 than the control ones. Cd causes less stomatal density and larger size of stomatal structures. The stomata structures, …
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The impact of heterogeneity in stomatal anatomical characters on stomatal function and physiology in wheat
… competition for non-food uses of crops. Stomatal anatomical characteristics including stomatal denFactors affecting food insecurity include the effects of climate change, losses of agricultural land to urbanization and increasing competition for non-food uses of crops. Stomatal anatomical …