Se connecter

Bibliographies thématiques / Plants Effect of stress on / Thèses

Pour voir les autres types de publications sur ce sujet consultez le lien suivant : Plants Effect of stress on.

Thèses sur le sujet « Plants Effect of stress on »

Auteur : Grafiati

Publié le 4 juin 2021

Mis à jour le 27 juillet 2024

Créez une référence correcte selon les styles APA, MLA, Chicago, Harvard et plusieurs autres

Choisissez une source :

Consultez les 50 meilleures thèses pour votre recherche sur le sujet « Plants Effect of stress on ».

À côté de chaque source dans la liste de références il y a un bouton « Ajouter à la bibliographie ». Cliquez sur ce bouton, et nous générerons automatiquement la référence bibliographique pour la source choisie selon votre style de citation préféré : APA, MLA, Harvard, Vancouver, Chicago, etc.

Vous pouvez aussi télécharger le texte intégral de la publication scolaire au format pdf et consulter son résumé en ligne lorsque ces informations sont inclues dans les métadonnées.

Parcourez les thèses sur diverses disciplines et organisez correctement votre bibliographie.

1

Eakes, Donald Joseph. "Moisture stress conditioning, potassium nutrition, and tolerance of Salvia splendens 'Bonfire' to moisture stress." Diss., Virginia Polytechnic Institute and State University, 1989. http://hdl.handle.net/10919/54350.

Texte intégral

Résumé :

The objective of this study was to determine the leaf water relations, gas exchange, and growth of the bedding plant salvia Salvia splendens 'Bonfire‘ as influenced by moisture stress conditioning (MSC - exposing plants to 4 sublethal dry-down cycles) and potassium (K) nutrition. Plants were fertilized with one of six K rates: 25, 75, 150, 300, 450, and 600 ppm as KCl in experiment one. Seven weeks after seeding plants were subjected to MSC. MSC and increasing K rate resulted in osmotic adjustment and increased cellular turgor potentials. Foliar K content increased as osmotic potentials decrea

Styles APA, Harvard, Vancouver, ISO, etc.

2

Le, Fevre Ruth Elizabeth. "Phytate and plant stress responses." Thesis, University of Cambridge, 2014. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.708218.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

3

Choudhury, Feroza Kaneez. "Rapid Metabolic Response of Plants Exposed to Light Stress." Thesis, University of North Texas, 2018. https://digital.library.unt.edu/ark:/67531/metadc1157543/.

Texte intégral

Résumé :

Environmental stress conditions can drastically affect plant growth and productivity. In contrast to soil moisture or salinity that can gradually change over a period of days or weeks, changes in light intensity or temperature can occur very rapidly, sometimes over the course of minutes or seconds. So, in our study we have taken an metabolomics approach to identify the rapid response of plants to light stress. In the first part we have focused on the ultrafast (0-90 sec) metabolic response of local tissues to light stress and in the second part we analyzed the metabolic response associated wit

Styles APA, Harvard, Vancouver, ISO, etc.

4

Kalifa, Ali. "Salt stress, and phosphorus absorption by potato plants cv. 'Russet Burbank'." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq29727.pdf.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

5

Ingarfield, Patricia Jean. "Effect of water stress and arbuscular mycorrhiza on the plant growth and antioxidant potential of Pelargonium reniforme Curtis and Pelargonium sidoides DC." Thesis, Cape Peninsula University of Technology, 2018. http://hdl.handle.net/20.500.11838/2794.

Texte intégral

Résumé :

Thesis (MTech (Horticulture))--Cape Peninsula University of Technology, 2018.<br>Pelargoniums have been studied extensively for their medicinal properties. P. reniforme and P. sidoides in particular are proven to possess antimicrobial, antifungal and antibiotic abilities due to their high antioxidant potential from compounds isolated from their tuberous roots. These plants have now been added to the medicine trade market and this is now causing concern for conservationists and they are generally harvested from the wild populations. This study evaluated the effect of water stress alone and in c

Styles APA, Harvard, Vancouver, ISO, etc.

6

Zhou, Maoqian 1961. "Nitrogen fixation by alfalfa as affected by salt stress and nitrogen levels." Thesis, The University of Arizona, 1989. http://hdl.handle.net/10150/277231.

Texte intégral

Résumé :

The growth and Nitrogen fixation by one low salt tolerant alfalfa (Medicago sativa L.) and two germination salt tolerant selections inoculated with were investigated at two salt levels (0, -0.6 Mpa) and two N rates (1, 5ppm) using a system which automatically recirculates a nutrient solution. The high level of salinity (-0.6 Mpa osmotic potential of culture solution) resulted in substantial reduction in the N fixation percentage and total fixed N. The effect of salinity was more pronounced for later cuttings than for the earlier cutting. The N fixation percentages were substantially decreased

Styles APA, Harvard, Vancouver, ISO, etc.

7

Zegeer, Abreeza May 1956. "Interactions between saline stress and benzyladenine on chili peppers (Capsicum annuum L.)." Thesis, The University of Arizona, 1989. http://hdl.handle.net/10150/277069.

Texte intégral

Résumé :

Exogenous application of BA (0, 50, 100 mg ul--1) had no significant effects on tolerance of chili peppers to salt (--0.75 MPa NaCl:CaCl₂, 3:1, w/w) as measured by vegetative and reproductive weights, numbers of reproductive structures, transpiration and total chlorophyll. When peppers were applied with microliter amounts of ¹⁴C labelled benzyladenine (BA; 44,400 dpm 1⁻¹), BA was translocated primarily acropetally from the site of application. Regardless of application site, translocated BA was ported primarily to expanding leaves, and BA was more readily absorbed by leaf as opposed to stem su

Styles APA, Harvard, Vancouver, ISO, etc.

8

Wongareonwanakij, Sathaporn. "Effects of water stress and partial soil-drying on senescence of sunflower plants." Title page, contents and summary only, 1995. http://web4.library.adelaide.edu.au/theses/09A/09aw872.pdf.

Texte intégral

Résumé :

Bibliography: leaves 98-123. This thesis investigates the symptoms of leaf senescence in response to plant shoot water stress and demonstrates the effect of a non-hydraulic root signal in the senescence response of mature leaves of sunflower. The alleviation of the leaf soluble protein loss rate by excision of the root system in drying soil indicates that this signal originates in roots in dry soil and acts to promote protein loss.

Styles APA, Harvard, Vancouver, ISO, etc.

9

Attumi, Al-Arbe. "Effect of salt stress on phosphorus and sodium absorptions by soybean plants." Thesis, McGill University, 1997. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=20242.

Texte intégral

Résumé :

The radiotracer methodology was combined with the Hoagland solution culture of growing soybean in a greenhouse to investigate the absorptions of phosphorus (P), calcium (Ca), and sodium (Na) as a function of salinity. Salt stress was varied by using zero to 120 mM NaCl. The research was initiated because of a need to increase soybean production in the saline soils of the semi-arid regions of the world. Although P absorption increased with time at each concentration of NaCl, increasing its concentrations ([NaCl]) to 120 mM reduced P uptake considerably. The addition of inorganic P (Pi) to the s

Styles APA, Harvard, Vancouver, ISO, etc.

10

Maclear, Athlee. "Identification of cis-elements and transacting factors involved in the abiotic stress responses of plants." Thesis, Rhodes University, 2005. http://hdl.handle.net/10962/d1007236.

Texte intégral

Résumé :

Many stress situations limit plant growth, resulting in crop production difficulties. Population growth, limited availability and over-utilization of arable land, and intolerant crop species have resulted in tremendous strain being placed on agriculturalists to produce enough to sustain the world's population. An understanding of the principles involved in plant resistance to environmental stress will enable scientists to harness these mechanisms to create stress-tolerant crop species, thus increasing crop production, and enabling the farming of previously unproductive land. This research proj

Styles APA, Harvard, Vancouver, ISO, etc.

11

Alm, David Michael. "Comparison and interaction of heat and salt stress in cultured tobacco cells." Virtual Press, 1986. http://liblink.bsu.edu/uhtbin/catkey/445616.

Texte intégral

Résumé :

Cultured tobacco cells (Nicotiana tabacum L., cv Wisconsin-38) were subjected to temporary sub-lethal heat and salt shock treatments to determine the effects of these treatments on various physiological parameters after subsequent lethal heat or salt stresses. Tobacco cells developed a tolerance to a non-permissive temperature stress (54C for 14 min) when pretreated with heat shock of 38C for 2h but not when pretreated at 42C for 2h. Cells pretreated at 38 (2h) exhibited less than 30% normal growth when the 54C stress came immediately after the 38C treatment. Tolerance to the 54C stress develo

Styles APA, Harvard, Vancouver, ISO, etc.

12

Leblanc, Rosanne. "Protein synthesis and drought stress in two rapeseed cultivars." Thesis, McGill University, 1991. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=60487.

Texte intégral

Résumé :

Desiccation effects on rate and pattern of protein synthesis in Brassica napus (cv westar) and Brassica juncea (cv cutlass) have been examined. Results showed that while the rate of water loss was similar in the two species, the inhibition of amino acid incorporation was greater in B. napus than B. juncea at any given level of desiccation. Electrolyte leakage increased with the degree of desiccation and was greater in B. napus than in B. juncea. In both, the increase in leakage was much sharper after 12 hours of desiccation. Quantitative changes in patterns of boiling-stable protein synthesis

Styles APA, Harvard, Vancouver, ISO, etc.

13

Phillips, Trevor David. "Stress manipulation in Dunaliella salina and dual-stage [beta]-carotene production." Thesis, Rhodes University, 1994. http://hdl.handle.net/10962/d1004097.

Texte intégral

Résumé :

The alga Dunaliella salina accumulates large quantities of β-carotene in response to certain environmental and physiological stresses. This hyper-accumulation process has been commercially exploited. However, the currently employed averaging or single-stage process produces β-carotene yields well below the genetic potential of the organism due to the inverse relationship between growth and secondary metabolite production. A dual-stage process, which separates the distinctive growth and secondary metabolite production stages of the alga, has been proposed. The broad aim of the research programm

Styles APA, Harvard, Vancouver, ISO, etc.

14

Louw, Cassandra Alexandrovna. "Wheat stress responses during Russian wheat aphid and Bird Cherry Oat aphid infestation : an analysis of differential protein regulation during plant biotic stress responses /." Thesis, Rhodes University, 2007. http://eprints.ru.ac.za/834/.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

15

Phillips, Lesley Gail. "Constituent processes contributing to stress induced β-carotene accumulation in Dunaliella salina". Thesis, Rhodes University, 1995. http://hdl.handle.net/10962/d1005341.

Texte intégral

Résumé :

The alga Dunaliella salina possesses the unique ability to accumulate up to 14 % of it's dry weight as β-carotene in response to stress conditions. This hyper-accumulation of β-carotene has led to the commercial exploitation of this alga for the biotechnological production of this important carotenoid. In order to maximise β-carotene production, a dual-stage process which separates the distinctive growth phase from the β-carotene accumulating stress phase has recently been patented. Preliminary laboratory studies showed that although stress factors such as high salinity and nutrient limitation

Styles APA, Harvard, Vancouver, ISO, etc.

16

Kathiria, Palak, and University of Lethbridge Faculty of Arts and Science. "Transgenerational changes in progeny of compatible pathogen infected plants." Thesis, Lethbridge, Alta. : University of Lethbridge, Dept. of Biological Sciences, 2010, 2010. http://hdl.handle.net/10133/2588.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

17

Larsson, Marie-France. "The Effect of Plants on Individuals' Stress Level in an Indoor Work Environment." Thesis, Mid Sweden University, Department of Social Sciences, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-11141.

Texte intégral

Résumé :

<p>Many instances of sick leave can be linked to diseases caused by stress. An efficient way to counter the negative effects of stress is coping. However, trying to fit coping activities into an already busy schedule can be stressful in itself. Therefore it is interesting to study passive stress-reducing methods, for instance interaction with nature. This paper studied the effect of the presence of plants in a work-like environment on the stress level of 30 participants divided equally in a control group and a test group by measuring their heart rate. A factorial analysis of variance and a mul

Styles APA, Harvard, Vancouver, ISO, etc.

18

Bilichak, Andriy. "The role of epigenetics in the maintenance of plant genome stability." Thesis, Lethbridge, Alta. : University of Lethbridge, Dept. of Biological Sciences, 2013. http://hdl.handle.net/10133/3448.

Texte intégral

Résumé :

Significant alterations in the environmental conditions can have pronounced effects on plant genome stability. Recent evidence argues for a global involvement of the components of epigenetic modules in the regulation of genome homeostasis both immediately after stress exposure and long after environmental cues were acquired. The last observation is of particular interest as the memory of imposing stress can be maintained at the molecular level throughout plant ontogenesis and may be faithfully propagated into the following generation. Our study provides evidence that epigenetic repercussions e

Styles APA, Harvard, Vancouver, ISO, etc.

19

Rasmussen, Scott Lynn 1958. "The effects of salinity stress on the development of Pythium blight of Agrostis palustris." Thesis, The University of Arizona, 1987. http://hdl.handle.net/10150/276627.

Texte intégral

Résumé :

Salinity stress predisposed Penncross creeping bentgrass to cottony blight caused by P. aphanidermatum. Studies were conducted on the effects of salinity on the mycelial growth of P. aphanidermatum and on the growth of Penncross bentgrass. Mycelial growth increased significantly up to Ec levels of 7.1 ds/m when compared to mycelial growth at the control Ec levels of 0.5 ds/m. Plant growth was reduced to 50% of the control at Ec levels of 4.3 ds/m. 3-month-old Penncross bentgrass plants were inoculated and incubated at two differing temperatures. At 32 C, all plants died within 3 days regardles

Styles APA, Harvard, Vancouver, ISO, etc.

20

Sumardi, of Western Sydney Hawkesbury University, of Agriculture Horticulture and Social Ecology Faculty, and School of Horticulture. "The influence of water stress on flowering and fruit production of Capsicum annuum Longum (chilli peppers)." THESIS_FAHSE_HOR_Sumardi_X.xml, 1993. http://handle.uws.edu.au:8081/1959.7/82.

Texte intégral

Résumé :

Severe water stress reduced the number of flowers produced by Capsicum annuum var. annuum L. Longum plants, but the timing of flower production was less affected. The use of different plant establishment techniques modified flower production. Bare rooted transplants slowed the rate of flower production in comparison with direct seeded plants or those established from cell tray transplants. Bare rooted transplants delayed the onset of water stress. The capabilities of male and female gametophytes were reduced by water stress, with the female more affected, and the interaction of male and female

Styles APA, Harvard, Vancouver, ISO, etc.

21

Migicovsky, Zoë. "Transgenerational inheritance of epigenetic response to abiotic stress in Arabidopsis thaliana." Thesis, Lethbridge, Alta. : University of Lethbridge, Dept. of Biological Sciences, c2012, 2012. http://hdl.handle.net/10133/3311.

Texte intégral

Résumé :

Abiotic stresses are one of the major limiting factors of plant growth and thus crop productivity. Exposure to these stresses, including temperature and UV, cause physiological and epigenetic changes in plants. Such changes may be inherited in the progeny of stressed plants, and may change their ability to respond to stress. To understand the ability of plants to inherit an epigenetic stress memory as well as the physiological manifestations of such a memory, we propagated both stressed and control plants and compared the progeny under both normal and stressed conditions. In addition to wild-t

Styles APA, Harvard, Vancouver, ISO, etc.

22

Korban, Martine. "The effects of mechanically induced stress on in vivo and in vitro roses /." Thesis, McGill University, 1989. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=61238.

Texte intégral

Résumé :

Protocols for the successful micropropagation of 'Queen Elizabeth' ('Q.E.') and 'Dick Koster' ('D.K.') roses were established, yielding a seven-ten fold multiplication rate per month. The effects of mechanically induced stress (MIS) (shaking stress) were evaluated on early establishment of greenhouse-grown 'Q.E.' and 'D.K.' rose cuttings and the ex vitro survival and hardiness of micropropagated 'Q.E.' plantlets. Shaking 'Q.E.' rose cuttings at 200 rpm for 30 min daily for 4 weeks during the rooting stage increased root length, dry weight and the root:shoot dry weight ratio. Similar shaking of

Styles APA, Harvard, Vancouver, ISO, etc.

23

Lawson, Inez Ilicia. "Invertebrate Community Composition Across Inundation Regimes and Its Potential to Reduce Plant Stress." PDXScholar, 2017. https://pdxscholar.library.pdx.edu/open_access_etds/3891.

Texte intégral

Résumé :

Appreciation of the ecological and economic values associated with healthy salt marshes has led to a recent rise in the number of marshes that are being targeted for restoration by dike removal. The success of restoration is often measured by the return of marsh plants, though this overlooks a key component of salt marshes, that of the invertebrate community within marsh sediments. To evaluate the short-term recovery of these invertebrates, sediment cores were collected across an elevational gradient in a recent dike removal marsh, one and two years post removal, and a nearby reference marsh.

Styles APA, Harvard, Vancouver, ISO, etc.

24

Li, Yimin. "Redox control of the transcriptional response to oxidative stress by Arabidopsis redox-sensitive basic leucine zipper protein 68." HKBU Institutional Repository, 2016. https://repository.hkbu.edu.hk/etd_oa/324.

Texte intégral

Résumé :

Cellular redox states mediate various physiological and developmental processes. Mechanisms involved in sensing cellular redox state and linking it to an appropriate physiological response remains poorly understood in plants. Arabidopsis bZIP68 was previously found to undergo reversible oxidation in its Cys320 in cells under oxidative stress. In this study, it was found that bZIP68 was localized in the nucleus in Arabidopsis seedlings under normal conditions. Upon treatment of oxidative stress, bZIP68 underwent nucleocytoplasmic shuttling and accumulated in the cytoplasm. This stress-dependent

Styles APA, Harvard, Vancouver, ISO, etc.

25

Richards, Siân Louise. "The involvement of Arabidopsis thaliana Annexin 1 in abiotic stress response pathways." Thesis, University of Cambridge, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.648626.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

26

Reed, Mickey Lynn 1952. "The effect of moisture stress and salinity on germination and growth of grain amaranth Amaranthus cruentus L and Amaranthus hypochondriacus L." Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/276777.

Texte intégral

Résumé :

The grain amaranths, Amaranthus cruentus and Amaranthus hypochondriacus have been promoted as grain-bearing plants of possible high productivity in saline or hot arid habitats. To investigate these claims, seeds of both species were germinated at 10, 15, 20, 25, 30, 35 and 40°centigrade. Germination percentage for both species was above 90% after four days at 20, 25, 30, and 35°C. Germination was negligible at 10 and 15°C and very low at 40°C. Seeds were germinated in isotonic solutions of PEG and NaCl at 0.0, -0.2, -0.4, -0.5, -0.6, -0.8, and -1.0 MPa osmotic potential at 30°C. Germination pe

Styles APA, Harvard, Vancouver, ISO, etc.

27

Ncise, Wanga. "Environmental stress effects on the phytochemistry and bioactivity responses of a South African medicinal bulbous plant, Tulbaghia violacea Harvey (Alliaceae)." Thesis, Cape Peninsula University of Technology, 2018. http://hdl.handle.net/20.500.11838/2854.

Texte intégral

Résumé :

Thesis (MTech (Horticulture))--Cape Peninsula University of Technology, 2018.<br>Deteriorating living and environmental conditions have contributed to the increasing prevalence of diseases in plants and animals. In humans, accumulation of abnormally high levels of free radicals in the tissues has been implicated in many non-communicable diseases, such as diabetes, cancer, arthritis, ischemia, gastritis, obesity and asthma. Worldwide, there is recognition of need to improve plant and animal health. Tulbaghia violacea (Alliaceae) is a medicinal plant that is extensively harvested by traditional

Styles APA, Harvard, Vancouver, ISO, etc.

28

Sequera, Mutiozabal Miren Iranzu. "Polyamine signaling pathway during environmental stress: Metabolomic approaches to elucidate spermine down-stream targets." Doctoral thesis, Universitat de Barcelona, 2015. http://hdl.handle.net/10803/315648.

Texte intégral

Résumé :

Environmental stress is increasingly wearing down crop productivity. Nowadays, one of the main aims of plant research is to elucidate tolerance mechanisms to diverse stresses, in order to provide solutions by generating stress-tolerant plants. In regard with this matter, polyamine signaling pathway is of crucial importance. The major polyamines in plants (putrescine, spermidine and spermine) tend to accumulate in response to stress and are associated with a protective role. The trend of their accumulation is related to the stress the plant is sensing; in fact, polyamine biosynthetic pathway is

Styles APA, Harvard, Vancouver, ISO, etc.

29

Rayan, Ahmed Mohamed. "The elucidation of the pathway of water movement in barley (Hordeum vulgare L.) seedlings using anatomical, cytological and physiological approaches." Diss., The University of Arizona, 1989. http://hdl.handle.net/10150/184785.

Texte intégral

Résumé :

Leaves of young barley (Hordeum vulgare cv Arivat) seedlings were examined anatomically, physiologically and cytologically to infer the pathway of transpirational water movement and to understand the basis for the selective responsiveness of the growing region to osmotic stress. Vessels with open lumens were found to extend from the intercalary meristem to the expanded blade, and all vessels are present in 5 functional vascular bundles (FVB) which are separated by 20 to 30 closely packed mesophyll cells and 2 to 3 immature vascular bundles (IVB). Heat pulse transport data confirmed the anatomi

Styles APA, Harvard, Vancouver, ISO, etc.

30

MARINO, Giovanni, Giovanni MARINO, and Giovanni MARINO. "Detection of the effects of water stress on woody plants." Doctoral thesis, Università degli studi del Molise, 2014. http://hdl.handle.net/11695/66250.

Texte intégral

Résumé :

Climate change is increasing the chronic water scarcity in many world regions, and also in Mediterranean basin. Water is the most limiting resource for plant growth and development where the climate is characterized by high potential evaporation and low and highly variable rainfall during the growing season. Water deficit constraints all the physiological processes involved in photosynthesis. In addition, drought and heat have effects on plats secondary metabolism as the synthesis and the emission of volatile organic compounds (VOCs) that, on global scale, are able to influence the chemical an

Styles APA, Harvard, Vancouver, ISO, etc.

31

Boyko, Oleksandr, and University of Lethbridge Faculty of Arts and Science. "Influence of various factors on plant homologuous recombination." Thesis, Lethbridge, Alta. : University of Lethbridge, Faculty of Arts and Science, 2004, 2004. http://hdl.handle.net/10133/243.

Texte intégral

Résumé :

The genome of living organisms is constantly subjected to the environmental influences that result in different negative, negligible or positive impacts. The ability to maintain the genome integrity and simultaneously provide its flexibility is the main determinant for the evolutionary success of any species. One of the important aspects of genome maintenance is the precise regulation of the DNA repair machinery. Results reported here indicate the existence of a tight, age-dependent regulation of homologous recombination, one of the two main DNA double-strand break repair pathways. We show tha

Styles APA, Harvard, Vancouver, ISO, etc.

32

Carson, R. "The effect of salicyclic acid on the responses of plants to heat stress and virus infection." Thesis, University of Cambridge, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.597317.

Texte intégral

Résumé :

Salicyclic acid (SA) is an important signalling molecule in plants that is involved in resistance to biotic and abiotic stresses. I examined the effect of SA on induced thermotolerance and heat shock protein (HSP) gene expression in plants. At the beginning of this project a number of studies had already been carried out with animal cells that indicated a link between salicylates and heat shock. However, no similar studies had been conducted in plants. In this study I demonstrated that SA inhibits the acquisition of induced thermotolerance in tobacco (<I>Nicotiana tabacum</I> L.). I investigat

Styles APA, Harvard, Vancouver, ISO, etc.

33

Chávez, Martínez Ángel de Jesús. "Altered Levels of Glycosylated Sterols Affect Tomato Development and Stress Response." Doctoral thesis, Universitat de Barcelona, 2020. http://hdl.handle.net/10803/673610.

Texte intégral

Résumé :

Los esteroles son una familia de compuestos triterpénicos que se presentan en forma libre (FS, por sus siglas en inglés) o conjugada, como ésteres (SE), glicósidos (SG) y acilglicósidos de esteroles (ASG). Los esteroles glicosilados (SG y ASG) y los FS son componentes de la membrana celular, donde en combinación con otros lípidos unidos a la membrana juegan un papel clave en la modulación de sus propiedades y función. Las esterol glicosiltransferasas (SGT) catalizan la glicosilación del grupo hidroxilo en la posición C-3 de los FS para producir SGs. Trabajos previos realizados en nuestro grupo

Styles APA, Harvard, Vancouver, ISO, etc.

34

Goedhart, Christian Leonard. "Influence of osmotic stress, ethanol, and a substituted pyridazinone, BAS 13-338, on the growth and lipid composition of two Chlorella species." Diss., Virginia Polytechnic Institute and State University, 1987. http://hdl.handle.net/10919/53634.

Texte intégral

Résumé :

Chlorella vulgaris and Chlorella pyrenoidosa were compared relative to their abilities to grow at osmotic potentials of -0.1, -0.5, -1.0, -1.5, -2.0 MPa, [polyethylene glycol(PEG)-induced], and for osmotically-induced changes in lipid composition. C. vulgaris growth was inhibited as osmotic potentials decreased, while C. pyrenoidosa growth was moderately inhibited at -2.0 hPa. C. vulgaris produced increasing concentrations of triglycerides and sterol esters and decreasing levels of polar lipids and sterols as osmotic concentrations increased. Polar lipids, triglycerides, and sterols declined i

Styles APA, Harvard, Vancouver, ISO, etc.

35

Al-Bahrany, Abdulaziz Maatook 1960. "Physiological and biochemical responses of short staple cotton (Gossypium hirsutum L.) to salt stress." Diss., The University of Arizona, 1989. http://hdl.handle.net/10150/184634.

Texte intégral

Résumé :

Three cotton (Gossypium hirsutum L.) germplasms (DP62, 84027, and 84033) were used to investigate the physiology of salt tolerance. Lines 84027 and 84033 were developed from the parental line DP62 and showed superior vigor under varying NaCl conditions (0.5 to 2.0 M) during germination and emergence. Proline levels increased in the leaves of all germplasms in response to increasing salinity. Varietal differences in proline levels did not reflect their variation in salt tolerance. Several physiological characteristics were also evaluated under non-saline condition in the greenhouse. There were

Styles APA, Harvard, Vancouver, ISO, etc.

36

Sumardi. "The influence of water stress on flowering and fruit production of Capsicum annuum Longum (chilli peppers)." Thesis, View thesis View thesis, 1993. http://handle.uws.edu.au:8081/1959.7/82.

Texte intégral

Résumé :

Severe water stress reduced the number of flowers produced by Capsicum annuum var. annuum L. Longum plants, but the timing of flower production was less affected. The use of different plant establishment techniques modified flower production. Bare rooted transplants slowed the rate of flower production in comparison with direct seeded plants or those established from cell tray transplants. Bare rooted transplants delayed the onset of water stress. The capabilities of male and female gametophytes were reduced by water stress, with the female more affected, and the interaction of male and female

Styles APA, Harvard, Vancouver, ISO, etc.

37

Rasmussen, S. L., and M. E. Stanghellini. "Effect of Salinity Stress on Development of Pythium Blight of Agrostis palustris." College of Agriculture, University of Arizona (Tucson, AZ), 1988. http://hdl.handle.net/10150/215832.

Texte intégral

Résumé :

Salinity stress predisposed cultivar Penncross creeping bentgrass to cottony blight caused by Pythium aphanidennatum at two temperature regimes. At 25-32 C, complete necrosis of all inoculated plants occurred at electrical conductivity (Ec) levels from 4.3-7.1 ds/m in 2 days, whereas at Ec levels of 0.5-2.8 ds/m death occurred within 3 days. At 25-27 C, complete necrosis of all inoculated plants occurred at Ec levels from 4.3-7.1 ds /m within a period of 5 days; no death was observed in control or inoculated plants at an Ec level of 0.5 ds/m. Increased salinity levels apparently affected the b

Styles APA, Harvard, Vancouver, ISO, etc.

38

Paech, Robert J. "The effect of soil moisture stress, rewatering and leaf washing on the efficacy of glyphosate on selected plant species /." St. Lucia, Qld, 2003. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17705.pdf.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

39

Wang, Dan. "Effects of CO₂ and nitrogen on plant response to heat stress /." Connect to full text in OhioLINK ETD Center, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1225299873.

Texte intégral

Résumé :

Dissertation (Ph.D.)--University of Toledo, 2008.<br>Typescript. "Submitted as partial fulfillment of the requirements for The Doctor of Philosophy Degree in Biology (Ecology-track)." Bibliography: leaves 6-9, 29-35, 71-78, 111-118, 149-153.

Styles APA, Harvard, Vancouver, ISO, etc.

40

Di, Corleto Ross, and mikewood@deakin edu au. "The Evaluation of heat stress indices using physiological comparisons in an alumina refinery in a sub-tropical climate." Deakin University, 1998. http://tux.lib.deakin.edu.au./adt-VDU/public/adt-VDU20050915.124324.

Texte intégral

Résumé :

The production of alumina involves the use of a process known as the Bayer process. This method involves the digestion of raw bauxite in sodium hydroxide at temperatures around 250°C. The resultant pregnant liquor then goes through a number of filtering and precipitation processes to obtain the aluminium oxide crystals which are then calcined to obtain the final product. The plant is situated in a sub tropical climate in Northern Australia and this combined with the hot nature of the process results in a potential for heat related illnesses to develop. When assessing a work environment for hea

Styles APA, Harvard, Vancouver, ISO, etc.

41

Boyko, Oleksandr, and University of Lethbridge Faculty of Arts and Science. "The versatile role of homologous recombination in plant cell : repair of DNA damage, stress-directed genome evolution and foreign DNA integration." Thesis, Lethbridge, Alta. : University of Lethbridge, Faculty of Arts and Science, 2008, 2008. http://hdl.handle.net/10133/724.

Texte intégral

Résumé :

Homologous recombination represents a DNA repair pathway. Its role in a plant cell is not limited to double strand break repair. It also extends to genome evolution via rearranging of DNA sequences, and has an important application in foreign DNA integration in the plant genome. Our study demonstrated that effects exerted by stress on homologous recombination and genome stability are not restricted to the exposed generation. The progeny of plants exposed to stress exhibited elevated spontaneous homologous recombination, changes in DNA methylation and higher tolerance to stress. These heritable

Styles APA, Harvard, Vancouver, ISO, etc.

42

Attumi, Al-Arbe. "Effects of salt stress on phosphorus and sodium absorptions by soybean plants." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0001/MQ44119.pdf.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

43

Sun, Hong. "The effect of hydrodynamic stress on plant embryo development." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/33945.

Texte intégral

Résumé :

The effect of steady shear stress on somatic embryos were investigated in a flow chamber and evaluated at different time intervals using microscopy technique. The development of meristematic cell clusters, i.e. the immature embryos, into a polarized somatic embryo, and the effect on the localization of the suspensor cells that form during development of the immature embryos, were studied as a function of shear stresses. With the distribution and growth rate of the meristematic and suspensor cells, the effect of stress on the embryo development was established. Furthermore, the effect of she

Styles APA, Harvard, Vancouver, ISO, etc.

44

Xing, Yu. "Mitogen activated protein kinase cascades mediate the regulation of antioxidant enzymes under abiotic stresses in arabidopsis." HKBU Institutional Repository, 2007. http://repository.hkbu.edu.hk/etd_ra/834.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

45

Lucas, Anne. "Water stress and disease development in Eucalyptus marginata (jarrah) infected with Phytophthora cinnamomi." Thesis, Lucas, Anne (2003) Water stress and disease development in Eucalyptus marginata (jarrah) infected with Phytophthora cinnamomi. PhD thesis, Murdoch University, 2003. https://researchrepository.murdoch.edu.au/id/eprint/167/.

Texte intégral

Résumé :

The south-west of Western Australia has a Mediterranean climate and flora endemic to this area, including the keystone species, jarrah (Eucalyptus marginata), have adapted to the droughted summer conditions. The introduction of an exotic soil borne pathogen, Phytophthora cinnamomi, has challenged the survival of this and many other species. The expectation might be that plants stressed by drought are more susceptible to disease and this study examined the development of disease caused by P. cinnamomi in E. marginata and the significance of water status to that development. Seedlings of E. m

Styles APA, Harvard, Vancouver, ISO, etc.

46

Lucas, Anne. "Water stress and disease development in Eucalyptus marginata (jarrah) infected with Phytophthora cinnamomi." Murdoch University, 2003. http://wwwlib.murdoch.edu.au/adt/browse/view/adt-MU20040820.13290.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

47

Genter, Robert B. "Population and community changes of attached-algae to zinc stress alone and in combination with selected environmental variables." Diss., Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/49778.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

48

Odunuga, Odutayo Odutola. "Molecular characterization of the tetratricopeptide repeat-mediated interactions of murine stress-inducible protein 1 with major heat shock proteins." Thesis, Rhodes University, 2003. http://hdl.handle.net/10962/d1007724.

Texte intégral

Résumé :

Murine stress-inducible protein 1 (mSTI1) is a co-chaperone that is homologous with the human heat shock protein 70 (Hsp70)/heat shock protein 90 (Hsp90)-organizing protein (Hop). The two proteins are homologues of the highly conserved stress-inducible protein 1 (STI1) family of co-chaperones. The STI1 proteins interact directly and simultaneously at some stage, with Hsp70 and Hsp90 in the formation of the hetero-multi-chaperone complexes that facilitate the folding of signal transducing kinases and functional maturation of steroid hormone receptors. The interactions of mSTI1 with both Hsp70 a

Styles APA, Harvard, Vancouver, ISO, etc.

49

Huggett, Jenny A. "The effect of chlorine, heat and physical stress on entrained plankton at Koeberg Nuclear Power Station." Master's thesis, University of Cape Town, 1988. http://hdl.handle.net/11427/17079.

Texte intégral

Résumé :

Bibliography: pages 112-138.<br>The large volume of seawater used for cooling at Koeberg Nuclear Power Station contains many planktonic organisms which are exposed to heat, chlorine and physical stress during their passage through the system. Phytoplankton biomass, measured as chlorophyll a, was reduced by an average of 55.32% due to entrainment, and productivity was decreased by 38.30% on average, mainly due to chlorination. Zooplankton mortality averaged 22.34% for all species and 30.52% for copepods, the dominant group. The copepod Paracartia africana was used in laboratory experiments desi

Styles APA, Harvard, Vancouver, ISO, etc.

50

Metch, Jacob W. "Effects of Microbial Community Stress Response and Emerging Contaminants on Wastewater Treatment Plants." Diss., Virginia Tech, 2017. http://hdl.handle.net/10919/85257.

Texte intégral

Résumé :

As the population in water stressed areas increases, it is critical that wastewater treatment plants (WWTPs) continue to replenish depleted water supplies, and serve as an alternative water source. WWTPs depend on microorganisms in activated sludge to remove pollutants from wastewater and therefore an understanding of how these microorganisms are affected by various conditions and pollutants is needed. Also, as consumer products and industrial processes evolve, so do the pollutants they discharge to wastewater. In order to keep pace with these changes, understanding the effects of emerging con

Styles APA, Harvard, Vancouver, ISO, etc.

Nous offrons des réductions sur tous les plans premium pour les auteurs dont les œuvres sont incluses dans des sélections littéraires thématiques. Contactez-nous pour obtenir un code promo unique!