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.
Results
Showing 1 to 17 of 17 for “"Stomatal opening"”.
-
Regulation of de-etiolation and stomatal opening responses by HYPOSENSITIVE TO LIGHT and HYPERSENSITIVE TO RED AND BLUE 1.
… shade avoidance, photoperiodic flowering, stomatal movement and so on. In Chapter II, we reported cloning of an Arabidopsis light-signaling component, HYPOSENSITIVE TO LIGHT or HTL. htl mutants displayed a long hypocotyl phenotype under red, far-red, and blue light, as well as other …
-
A Critical Assessment of the Role of Abscisic Acid and Calcium Ions in Regulating Stomatal Movements in Commelina communis L.
The inhibition of stomatal opening in Commelina communis L. by abscisic acid (ABA) appeared to be dependent on the availability of calcium ions. Synergism between calcium ions and ABA in suppressing stomatal opening was observed, and a factorial experiment revealed a highly significant interaction …
-
Stomatal regulation in C4 photosynthesis
… exits through transpiration. The regulation of stomatal behavior results in a trade-off between CO</sub>2</sub> uptake and water loss in higher plants. While genetic and biochemical analysis of stomatal regulation has focused heavily on the C<sub>3</sub> species *Arabidopsis thaliana*, it is …
-
Regulation of the stomatal response to red light
Regulation of the stomatal response to red light Stomata are microscopic pores in the leaf epidermis which govern the exchange of CO2 and water vapour between the plant and surrounding atmosphere. Highly specialised guard cells surround each stomatal pore and regulate stomatal aperture in response …
-
Increased expression of NADP malic enzyme in the guard cells of <i>Arabidopsis</i> plants
<p>Plants lose their water as transpiration by stomatal opening, which is governed by guard cells surrounding the stomata. Influx of ions such as K<sup>+</sup>, Cl-, from neighboring cells into guard cells, and malate synthesis within guard cells increases turgor pressure opening the stomata. …
-
The economic challenge of leaf gas exchange
… angiosperms, but instead observed durations of stomatal opening and closing followed that predicted to maximise light fleck use. However, adaptations allowing a less-conservative water-use strategy in angiosperms may have provided an adaptive advantage by allowing faster photosynthetic induction …
-
The economic challenge of leaf gas exchange
… angiosperms, but instead observed durations of stomatal opening and closing followed that predicted to maximise light fleck use. However, adaptations allowing a less-conservative water-use strategy in angiosperms may have provided an adaptive advantage by allowing faster photosynthetic induction …
-
Water relations, carbon fixation and growth rates of two leaf succulent species under different water regimes
… water shortage. R.carolii exhibited limited stomatal response and thus appeared to be dying, while R.multiflora adopted day time stomatal opening a and CO2 uptake. This strategy and in general the high tolerance to water stress shown by R.multiflora allowed it to outcompete R.carolii on the …
-
An investigation of the role of Arabidopsis thaliana plant natriuretic peptide in planta
… and ion homeostasis including cell expansion, stomatal opening and NaCl and osmotic stress responses, consistent with reported responses to natriuretic peptide treatment. Furthermore, the atpnp-a mutant revealed a role for AtPNP-A in the defence response. Evidence to support this came from the …
-
Functional role of plant water fluxes in nutrient acquisition
… by plants are not merely the consequence of stomatal opening for CO₂ acquisition. Rather nocturnal and diurnal transpiration are regulated by nutritional requirements and serves as a driving force for nutrient transport to roots. Likewise, hydraulic redistribution serves to draw water from …
-
GABA regulation of gas exchange in barley (Hordeum vulgare)
Stomatal guard cells are the primary gatekeepers for gas exchange between plants and the atmosphere, and therefore, modulate the rate of photosynthesis (i.e. plant energy production) and transpiration (i.e. plant water loss). It is well known that carbon gain and water loss through stomatal …
-
Maize R gene Rxo1 Confers Disease Resistance on Pepper and Nicotiana benthamiana
… genes CaCys1 in N. benthamiana increased the stomatal opening and promoted the Xe growth in N. benthamiana plants. Thus, we illuminate one possible mechanism of Xe4428's virulence function is to regulate the stomata apertures in N. benthamiana. Bacterial fruit blotch (BFB) caused by the …
-
Variation in Drought Tolerance Attributes Among Tepary Bean (Phaseolus acutifolius) Germplasm
… (43.12%) RWC. The highest (68.70 mmol m-2s-1) stomatal conductance (SC) was three-fold more than for the check genotype (19.90 mmol m-2 s-1). At least four genotypes (‘Ac-6’, ‘Ac-7’, ‘Ac-22’ and ‘Ac-28’) attained significantly (P < 0.05) greater stem height (SH) than the trial mean (28.63 cm). …
-
Structure-function analysis of phototropin receptor kinases
… phototropism, chloroplast movement and stomatal opening) that combine to increase the photosynthetic efficiency of plants. Initially identified in the model plant Arabidopsis thaliana, phototropins have since been characterised in the unicellular alga Chalmydomonas reinhardtii, …
-
Investigation of phototropin blue light receptor function and signalling in arabidopsis
… chloroplast accumulation, blue light-induced stomatal opening, leaf expansion and leaf movements can be induced through the activation of both phot1 and phot2 in response to different intensities of light, with phot1 being more light sensitive than phot2. In addition to the functionally …
-
Water, mineral nutrient and hormone flows and exchanges in the hemiparasitic association between root hemiparasite Rhinanthus minor and the host Hordeum vulgare
… field (botanic garden), showed normal diurnal stomatal behaviour. The abnormal behaviour of Rhinanthus stomata was not due to anatomical reasons as closure could be induced by applying high external ABA concentrations. Remarkable differences have been detected between the hydraulic conductance …