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Dissertations / Theses on the topic 'Plant growth promoting rhizobacteria (PGPR)'

Author: Grafiati
Published: 4 June 2021
Last updated: 25 July 2025

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1

Swift, Rebecca Gaye. "Novel plant growth promoting rhizobacteria (PGPR) isolated from Western Australian soils." Thesis, Swift, Rebecca Gaye (2006) Novel plant growth promoting rhizobacteria (PGPR) isolated from Western Australian soils. Honours thesis, Murdoch University, 2006. https://researchrepository.murdoch.edu.au/id/eprint/32755/.

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Plant growth promoting rhizobacteria (PGPR) colonise plant roots and exert beneficial effects on plant growth and development. The mechanisms of action of these PGPR are not conclusively known, however, there is evidence for the role of indole-3-acetic acid (IAA) and 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase production by rhizobacteria in plant growth promotion. In this study, novel-PGPR were isolated from the rhizosphere of native species as well as agricultural crop species, as opposed to other work in this field in which potential PGPR are isolated from the rhizosphere of the ta
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Mangmang, Jonathan S. "Plant growth promotion by rhizobacteria in aquaponics." Thesis, The University of Sydney, 2015. http://hdl.handle.net/2123/14863.

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Wastewater or fish effluent (FE) from freshwater aquaculture can be a good and cheap liquid fertiliser for plants. However, while it represents a good source of nutrients to support plant growth in a system called aquaponics, it appears that its use needs to be optimised to take full advantage of the potential benefits. Apart from mineral amendments, the use of beneficial microorganisms that can have a direct impact on plant growth and nutrient utilisation could be a promising option. Plant growth promoting rhizobacteria (PGPR) are a group of rhizospheric bacteria, when introduced in associati
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3

Mazumder, Deepika. "Studying the effect of plant growth promoting Rhizobacteria supplementation on growth and seed yield of Brassica campestris L. (mustard plant)." Thesis, University of North Bengal, 2020. http://ir.nbu.ac.in/handle/123456789/4371.

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4

Shishido, Masahiro. "Plant growth promoting rhizobacteria (PGPR) for interior spruce (Picea engelmannii x P. glauca) seedlings." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq25159.pdf.

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5

Tchuisseu, Tchakounte Gylaine Vanissa. "Assessing the role of native plant growth-promoting rhizobacteria (PGPR) isolated from Cameroon soil as bio-inoculant in improving plant growth." Doctoral thesis, Humboldt-Universität zu Berlin, 2021. http://dx.doi.org/10.18452/22323.

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Der Mangel an Nährstoffen im Boden, hauptsächlich an Phosphor (P) und Stickstoff (N), verbunden mit einem hohen Salzgehalt und der generellen Verarmung landwirtschaftlicher Böden , sind ein ernstes Problem für die landwirtschaftliche Produktion weltweit. Daher besteht ein dringender Bedarf an Forschung und Entwicklung geeigneter landwirtschaftlicher Praktiken, um ungünstige Bodenbedingungen zu verringern und wenn möglich die Fruchtbarkeit von Kulturland wiederherzustellen. Die Verwendung von Rhizobakterien, die das Pflanzenwachstum (PGPR) fördern, kann sich bei der Entwicklung von Strategien z
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Yusran. "Use of plant growth-promoting rhizobacteria (PGPR) to improve mycorrhization, nutrient acquisition and growth of vegetable plants affected by soilborne pathogens." Göttingen Cuvillier, 2009. http://d-nb.info/997890959/04.

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7

GUERRIERI, MARIA CHIARA. "Bioprospecting di simbionti vegetali con proprietà PBS per lo sviluppo di nuovi prodotti biostimolanti: bridging tra i risultati della ricerca e gli aspetti normativi." Doctoral thesis, Università Cattolica del Sacro Cuore, 2021. http://hdl.handle.net/10280/95717.

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L'agricoltura moderna sta affrontando sfide come la perdita di fertilità del suolo, la variabilità climatica e gli attacchi di agenti patogeni in continuo aumento. Le pratiche agricole si stanno evolvendo verso sistemi sostenibili e rispettosi dell'ambiente. L'uso di biostimolanti (PBS, plant biostimulant) è una soluzione innovativa per affrontare le sfide di un’agricoltura sostenibile che garantisce un assorbimento ottimale dei nutrienti, una resa delle colture e tolleranza agli stress abiotici. In particolare, tra i diversi tipi di biostimolanti presenti sul mercato, i rizobatteri, classific
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8

GUERRIERI, MARIA CHIARA. "Bioprospecting di simbionti vegetali con proprietà PBS per lo sviluppo di nuovi prodotti biostimolanti: bridging tra i risultati della ricerca e gli aspetti normativi." Doctoral thesis, Università Cattolica del Sacro Cuore, 2021. http://hdl.handle.net/10280/95717.

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L'agricoltura moderna sta affrontando sfide come la perdita di fertilità del suolo, la variabilità climatica e gli attacchi di agenti patogeni in continuo aumento. Le pratiche agricole si stanno evolvendo verso sistemi sostenibili e rispettosi dell'ambiente. L'uso di biostimolanti (PBS, plant biostimulant) è una soluzione innovativa per affrontare le sfide di un’agricoltura sostenibile che garantisce un assorbimento ottimale dei nutrienti, una resa delle colture e tolleranza agli stress abiotici. In particolare, tra i diversi tipi di biostimolanti presenti sul mercato, i rizobatteri, classific
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9

Mengual, Navarro-Soto Carmen María. "Aplicación de rizobacterias promotoras del crecimiento vegetal (RPCV) en la reforestación de zonas semiáridas = Application of plant growth promoting rhizobacteria (PGPR) in the revegatation of semiarid areas." Doctoral thesis, Universidad de Murcia, 2015. http://hdl.handle.net/10803/294264.

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En las zonas semiáridas mediterráneas del sureste de España, las escasas e irregulares precipitaciones, y un largo y seco periodo de verano han contribuido drásticamente a la aceleración de los procesos de degradación del suelo. Los cambios ambientales como consecuencia de la pérdida de las comunidades naturales de plantas, vienen a menudo acompañados o precedidos por la degeneración de las propiedades físicas y químicas del suelo, además de por una pérdida o reducción de la actividad microbiana. Actualmente se acepta que la diversidad y actividad de la microbiota del suelo es la base de uno d
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10

South, Kaylee. "Improving abiotic and biotic stress tolerance in floriculture crops." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1595499762154056.

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11

Griggs, Roland Stephen. "Pseudomonas spp. Isolated from Soybean Nodules Promote Soybean Growth and Nitrogen Fixation." Thesis, Virginia Tech, 2020. http://hdl.handle.net/10919/98790.

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Nitrogen-fixing bacteria in soybean nodules convert atmospheric nitrogen to plant-available forms in exchange for carbon from the plant, but other non-nitrogen-fixing bacteria also reside in nodules, and their role in the nodule is not well understood. This study was conducted to determine the effect of three non-nitrogen-fixing Pseudomonas spp. strains isolated from nodules on soybean, and we hypothesized these strains benefit soybean. A greenhouse study in which two cultivars of soybean (Asgrow AG46X6 and Pioneer P48A60X) were treated with three fluorescent Pseudomonas spp. strains (referred
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12

Stavropoulou, Archontia. "Untersuchungen über die Wirkung von Stoffwechselprodukten, insbesondere Auxinen, des wachstumsfördernden Rhizobakteriums (PGPR) Bacillus subtilis auf die pflanzliche Salztoleranz." Doctoral thesis, Humboldt-Universität zu Berlin, Landwirtschaftlich-Gärtnerische Fakultät, 2005. http://dx.doi.org/10.18452/15301.

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Zur Aufklärung des Wirkungsmechanismus der toleranzerhöhenden Wirkung gegenüber Salinität des Pflanzenwurzeln besiedelnden PGPR Bacillus subtilis wurden bakterielle Stoffwechselprodukte der Stämme FZB24 und FZB41 bei der Testpflanze Tomate unter dem Einfluss von hohem Salzstress getestet. Das Kulturfiltrat mit der Gesamtheit der von B. subtilis produzierten Stoffwechselprodukte zeigte im axenischen Test zur Ermittlung des Wachstums nach 7-tägiger Behandlung der Sämlinge und nachfolgender Kultivierung unter Salzstress eine gewisse toleranzerhöhende Wirkung bei 0,1 %-Konzentration. Zur Produkta
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13

Kierul, Kinga. "Comprehensive proteomic study of Bacillus amyloliquefaciens strain FZB42 and its response to plant root exudates." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2013. http://dx.doi.org/10.18452/16805.

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Bacillus amyloliquefaciens FZB42 ist ein frei lebendes Bakterium, das Pflanzenwurzeln besiedelt und das Pflanzenwachstum durch viele verschiedene Wirkmechanismen anregt. In dieser Arbeit wurden die molekularen Grundlagen dieser positiven Wirkungen, die dieses „Pflanzenwachstum fördernde Rhizobakterium“ (PGPR) auf seine Wirte ausübt, untersucht. Um den gegenseitigen Austausch von B. amyloliquefaciens und seinen Wirtspflanzen zu entschlüsseln, wurden umfangreiche Proteomstudien durchgeführt. Es wurden Referenzkarten der extrazellulären und zytosolischen Proteinfraktionen erstellt. Die größte A
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14

Bresson, Justine. "Interaction plante-microorganismes : Implication de la rhizobactérie Phyllobacterium brassicacearum dans les réponses d’Arabidopsis thaliana au stress hydrique." Thesis, Montpellier 2, 2013. http://www.theses.fr/2013MON20084/document.

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Les bactéries promotrices de la croissance des plantes (PGPR) peuvent améliorer la performance et la tolérance des plantes lors de stress environnementaux. Arabidopsis thaliana est un modèle de choix pour étudier les mécanismes impliqués dans les interactions plante-bactéries. Nous avons analysé de multiples traits associés à la dynamique de croissance, au développement et la physiologie des végétaux afin d'évaluer les effets de l'inoculation par Phyllobacterium brassicacearum STM196, une PGPR isolée de la rhizosphère du colza, sur les réponses d'A. thaliana à des stress hydriques de différent
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Davies, Keith Graham. "Studies on plant growth promoting rhizobacteria." Thesis, Bangor University, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266612.

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Lewis, Ricky W. "TOXICITY OF ENGINEERED NANOMATERIALS TO PLANT GROWTH PROMOTING RHIZOBACTERIA." UKnowledge, 2016. http://uknowledge.uky.edu/pss_etds/77.

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Engineered nanomaterials (ENMs) have become ubiquitous in consumer products and industrial applications, and consequently the environment. Much of the environmentally released ENMs are expected to enter terrestrial ecosystems via land application of nano-enriched biosolids to agricultural fields. Among the organisms most likely to encounter nano-enriched biosolids are the key soil bacteria known as plant growth promoting rhizobacteria (PGPR). I reviewed what is known concerning the toxicological effects of ENMs to PGPR and observed the need for high-throughput methods to evaluate lethal and su
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Basnet, Merab. "Investigations of plant growth promoting rhizobacteria of tea and elucidation of their mechanism of action." Thesis, University of North Bengal, 2006. http://hdl.handle.net/123456789/1079.

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18

Mulaudzi, Renolda Ipeleng. "Assessment of plant growth promoting rhizobacteria for plant growth enhancement and biocontrol activity against Fusarium pseudograminearum on wheat." Diss., University of Pretoria, 2019. http://hdl.handle.net/2263/77860.

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Plant growth promoting rhizobacteria (PGPR) are those bacteria that colonise the rhizosphere of various plants and promote growth either directly by improving nutrient uptake by the plant roots or indirectly through the control of pathogens. Due to the negative effects associated with the prolonged use of chemical fertilizers and fungicides, a lot of emphasis is now being given to research that investigates an alternative, sustainable and environmentally friendly method of crop production and protection. In the current study, a collection of rhizobacterial isolates from the University of Preto
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Hu, Chia-Hui Kloepper Joseph. "Induction of growth promotion and stress tolerance in arabidopsis and tomato by plant growth-promoting." Auburn, Ala., 2005. http://repo.lib.auburn.edu/2005%20Summer/doctoral/HU_CHIA-HUI_54.pdf.

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20

Maher, Mary. "Effects of Plant Growth-Promoting Bacteria and Fungi on Strawberry Plant Health, Fruit Yield, and Disease Susceptibility." DigitalCommons@CalPoly, 2021. https://digitalcommons.calpoly.edu/theses/2335.

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Studies on plant growth-promoting rhizobacteria (PGPR) and fungi (PGPF) as biostimulants have shown significant positive effects on plant health, fruit yield, or pest management. However, very few published studies to date have been specific regarding their effects on strawberries (Fragaria × ananassa), particularly on soilborne disease prevalence in organically grown strawberries. Empirical data on the results of using these products in commercial growing applications under various conditions would be highly valuable, especially for organic growers who have limited synthetic chemical pesticid
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Vives, Peris Vicente. "Interaction of citrus root exudates with plant growth promoting rhizobacteria under abiotic stress conditions." Doctoral thesis, Universitat Jaume I, 2018. http://hdl.handle.net/10803/461915.

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En la naturaleza las plantas liberan constantemente a la rizosfera una mezcla de metabolitos conocida como exudados radiculares. Su composición puede verse afectada por diferentes estímulos, incluyendo estreses abióticos como la salinidad o elevadas temperaturas. El Capítulo 1 demuestra que los portainjertos de cítricos citrange Carrizo y Citrus macrophylla exudan diferentes concentraciones de prolina y fitohormonas dependiendo del estrés abiótico y del genotipo. El Capítulo 2 estudia el efecto de dichos exudados de plantas de cítricos sometidas a salinidad y calor sobre las rizobacterias Pseu
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Nava, Diaz Cristian. "Role of plant growth-promoting rhizobacteria in integrated disease management and productivity of tomato." The Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=osu1135888331.

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MINAZZATO, GABRIELE. "Characterization of a transcription factor controlling vitamin B3 metabolism in plant growth promoting rhizobacteria." Doctoral thesis, Università Politecnica delle Marche, 2020. http://hdl.handle.net/11566/274533.

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I rizobatteri sono in grado di colonizzare le radici delle piante in tutte le sue fasi di crescita, in presenza di una microflora competitiva. All'interno di questo gruppo di batteri, le specie che promuovono la crescita delle piante (PGPR) stabiliscono un'interazione benefica con le radici, migliorando la crescita e lo sviluppo dell'ospite. Evidenze sperimentali hanno dimostrato che la sintesi della forma biologicamente attiva della vitamina B3, cioè il coenzima NAD, è direttamente coinvolta negli effetti benefici mediati dai PGPR. Infatti, in Burkolderia sp. ceppo PsJN, un PGPR simbiotico de
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Dashti, Narjes. "Plant growth promoting rhizobacteria and soybean nodulation, and nitrogen fixation under suboptimal root zone temperatures." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=42011.

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Soybean (Glycine max (L.) Merr.) is a subtropical legume that requires root zone temperatures (RZTs) in the 25 to 30$ sp circ$C range for optimal symbiotic activity. The inability of soybean to adapt to cool soil conditions limits its development and yield in short season areas. In particular, nodulation and N$ sb2$ fixation by this subtropical crop species is sensitive to cool (RZT). The objectives of this thesis were to determine whether or not PGPR could be used to help overcome the low RZT inhibition of soybean nodulation, to improve soybean nitrogen fixation and yield under field conditio
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Dashti, Narjes. "Plant growth promoting rhizobacteria and soybean nodulation, and nitrogen fixation under suboptimal root zone temperatures." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape15/PQDD_0027/NQ29918.pdf.

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Gray, Elizabeth Jean. "Identification of a novel bacteriocin, thuricin 17, produced by Bacillus thuringiensis NEB17." Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=84035.

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Bacillus thuringiensis NEB17 is a plant growth promoting rhizobacterium that produces a compound that directly increases plant growth. The compound is a bacteriocin and we propose the name thuricin 17. Thuricin 17 is a novel peptide inhibiting the growth of Bacillus species/strains, displaying both bactericidal and static effects. Its molecular weight, estimated via SDS-PAGE and verified by MALDI-QTOF mass spectroscopy, is 3162 Da. The partial amino acid sequence was determined and is N-term---WTCWSCLVCAACSVELL, C-term-CAS. Heat and pH stability, production and susceptibility to proteol
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Li, Jiping. "Isolation, characterization and regulation of 1-aminocyclopropane-1-carboxylate deaminase genes from plant growth-promoting rhizobacteria." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape7/PQDD_0007/NQ44773.pdf.

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Chen, Chunquan. "Induced systemic resistance against Pythium aphanidermatum by plant growth-promoting rhizobacteria on cucumber, Cucumis sativus L." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/NQ50129.pdf.

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Chen, Chunquan 1958. "Induced systemic resistance against Pythium aphanidermatum by plant growth-promoting rhizobacteria on cucumber (Cucumis sativus L.)." Thesis, McGill University, 1998. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=35862.

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Cucumber root rot caused by Pythium aphanidermatum can be suppressed by introduced plant growth-promoting rhizobacteria (PGPR). Preliminary experiments clarified that this root disease could be suppressed by strains of Pseudomonas aureofaciens, P. corrugata, and P. fluorescens. To determine whether the mechanism was a systemic resistance induced by PGPR, a split root technique was employed on greenhouse cucumbers grown in soilless substrates. On the split roots, bacteria which were introduced into one side of the root were completely separated from pathogen challenged-inoculated roots-on the o
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Otukpa, Faith Obiye. "Metabolomic analysis of maize (Zea mays&nbsp L.) seedlings treated with selected plant growth promoting rhizobacteria." Diss., University of Pretoria, 2019. http://hdl.handle.net/2263/77875.

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Global food production has significantly increased mainly due to the use of high-yield crop varieties, fertilisers, fungicides and pesticides, and improved irrigation methods. Despite the increase in production, there has been a significant cost to the environment in the form of pollution, and to farmers in the form of rising fertiliser and pesticide costs. The impacts on the environment include but are not limited to groundwater contamination, declining soil health and increased pest and pathogen resistance, all which increase the financial cost to farmers. To reverse or rather salvage the si
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Parkunan, Venkatesan. "Induced disease resistance elicited by acibenzolar-S-methyl and plant growth-promoting rhizobacteria in tobacco (Nicotiana tabacum L.)." Diss., Virginia Tech, 2008. http://hdl.handle.net/10919/29109.

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Active disease resistance in plants is induced during the pathogen infection process that triggers multiple defense-related genes to establish broad-spectrum resistance. Several biotic and abiotic agents can mimic natural induced resistance (IR), categorized as systemic acquired (SAR) or induced systemic resistance (ISR). IR, triggered by acibenzolar-S-methyl (ASM) or plant growth-promoting rhizobacteria (PGPR), was evaluated on two-to-three types of tobacco in greenhouse and field studies. Tobacco mosaic virus (TMV) local lesion assays monitored induction and maintenance of ASM-induced SAR o
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Chen, Xiaohua. "Whole genome analysis of the plant growth-promoting Rhizobacteria Bacilllus amyloliquefaciens FZB42 with focus on its secondary metabolites." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2010. http://dx.doi.org/10.18452/16095.

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Bacillus amyloliquefaciens FZB42 besitzt einen beeindruckenden Effekt zur Verbesserung des Pflanzenwachstums. Um die Mechanismen, vor allem auf molekularer Ebene, zu verstehen, wurde das komplette Genom von FZB42 in dieser Arbeit sequenziert. Abwesenheit von der weit verbreiteten Phagen-verwandten Genen im Genom von B. subtilis 168, der in enger Verwandtschaft zum FZB42 steht, ist ein besonderes Merkmal. Dagegen enthält das Genom von FZB42 viele DNA-Inseln, in denen unikale Gene in FZB42 als Cluster gefunden wurden. Viele Gene, die möglicherweise zur Pflanzenwachstumsförderung beitragen, wurde
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Teijeiro, Rosalia Isabel Garcia. "Using plant growth promoting rhizobacteria to mitigate effects of soil drying in pea ( Pisum sativum ) and lettuce (Lactuca sativa )." Thesis, Lancaster University, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.661127.

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The early stages of drought affect plant hormonal homeostasis, including root to shoot signalling. This thesis focuses on manipulating this signalling (to enhance plant drought tolerance) by adding bacterial inocula (Variovorax paradoxus 5C-2 or Bacillus subtilis IR15) to the rhizosphere of pea and lettuce plants. These bacteria can decrease plant ACC (ethylene) or increase cytokinin status, respectively. Firstly, characterising V. paradoxus 5C-2. indicated that it tolerates drought conditions, and colonises the roots of different plant species with different specificity. In the highly specifi
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Sarkar, Jayanwita. "Temperature stress in wheat plants, its alleviation by selected plant growth promoting rhizobacteria and comparative evaluation of their role in tolerance to biotic stress." Thesis, University of North Bengal, 2018. http://ir.nbu.ac.in/handle/123456789/2656.

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Raudales, Banegas Rosa Emilia. "Studies In Biocontrol: Enumeration, Characterization, And Screening Of Rhizobacteria." Columbus, Ohio : Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1218207906.

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Batista, Bruna Durante. "Promoção de crescimento em milho (Zea mays L.) por rizobactérias associadas à cultura do guaranazeiro (Paullinia cupana var. sorbilis)." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/11/11137/tde-25032013-154749/.

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O uso de fertilizantes minerais nas culturas, inclusive no milho, é uma prática agrícola que provoca danos ambientais e prejuízos econômicos. Uma alternativa promissora, visando melhorar a produtividade e reduzir o uso de fertilizantes, é a utilização de microrganismos benéficos associados às plantas, particularmente as rizobactérias promotoras de crescimento. Essas bactérias vivem na rizosfera e são capazes de colonizar diversos tecidos vegetais, beneficiando o desenvolvimento das plantas através de mecanismos de promoção de crescimento. Na busca por alternativas sustentáveis e mais rentáveis
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Mwafulirwa, Lumbani. "The potential for root trait selection to enhance soil carbon storage and sustainable nutrient supply." Thesis, University of Aberdeen, 2017. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=231426.

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Plant roots are central to C- and N-cycling in soil. However, (i) plants differ strongly in tissue recalcitrance (e.g. lignin content) affecting their mineralization in soil, and (ii) rhizodeposits also vary strongly in terms of the metabolites that they contain. Therefore, (i) we used 13C labelled ryegrass root and shoot residues as substrates to investigate the impact of tissue recalcitrance on soil processes through controlled incubation of soil, (ii) we assessed variations in root C-deposition between barley genotypes and their respective impacts on soil processes using 13CO2 labelled plan
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De, Utanka Kumar. "Screening of Arbuscular Mycorrhizal Fungi and Plant Growth Promoting Rhizobacteria from rhizosphere of plantation crops and their evaluation for induction of resistance in tea plants against fungal Pathogen." Thesis, University of North Bengal, 2013. http://ir.nbu.ac.in/hdl.handle.net/123456789/961.

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Valette, Marine. "Gènes et métabolites végétaux marqueurs de l'association riz-bactérie phytobénéfique." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSE1064.

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Ce projet explore l’hypothèse selon laquelle les gènes et les métabolites végétaux communément régulés joueraient un rôle majeur dans l’interaction riz-PGPR et constituerait une signature moléculaire de la perception des PGPR par le riz. Dans cet objectif, une analyse intégrant le suivi de l’expression d’une sélection de gènes ainsi que le profilage des métabolites secondaires a été conduite sur les racines d’un unique cultivar de riz (Nipponbare) en réponse à l’inoculation de dix souches de PGPR appartenant à divers genres bactériens (Azospirillum, Herbaspirillum, Paraburkholderia). Nos résul
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Patrick, Melanie. "Characterisation of rhizobacterial communities of Eucalyptus species and hybrids." Thesis, Bloemfontein: Central University of Technology, Free State, 2013. http://hdl.handle.net/11462/244.

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Thesis (M. Tech. (Agriculture)) -- Central University of Technology, Free State, 2013<br>ntroduction: Good quality Eucalyptus is of importance to South Africa’s pulp and paper industry. Limited land is available for forestry, therefore Eucalyptus with genotypes for good pulp and paper qualities, particularly hybrids, are bred and cloned via cuttings. Although these Eucalyptus clones keep the favourable genotypes in the population, many have difficulty with rooting. Research has shown that rhizobacteria can improve rooting. Thus, one strategy to enhance the rooting of cuttings is to use rhizoba
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Rankin, Lynda. "Evaluation of native rhizosphere bacteria for use as biological control agents against Pythium aphanidermatum root rot of European greenhouse cucumbers." Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=56660.

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Thirty-two isolates of rhizosphere bacteria, selected for their ability to inhibit zoospore germination and/or mycelial growth of Pythium aphanidermatum (Pa) in vitro, were evaluated in a test tube bioassay using cucumber c.v. 'Straight 8'. These isolates were identified as Psedudomonas corrugata (Pc13 or 35) and P. fluorescens (Pf15, 16 or 27). All but one of the five isolates effectively colonised the roots of cucumber plants in short term studies. Isolates 15 and 35 were found to maintain high population densities throughout the time period. Pa-inoculated plants treated with the Pc13 or Pf1
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Laudick, Julia Ann. "Microbial Biostimulants in Organic Farming Systems: Patterns of Current Use and an Investigation of Their Efficacy in Different Soil Environments." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1483689529339271.

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43

Planchon, Aline. "Le pathosystème Lin (Linum usitatissimum) - Fusarium oxysporum : Impact du champignon et d'un agent de biocontrôle sur des réponses moléculaires de la plante et le développement de la fusariose." Thesis, Normandie, 2018. http://www.theses.fr/2018NORMR122.

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Le lin, principale plante à fibres cultivée en France possède un intérêt industriel pour la qualité de ses fibres. Les cultures de lin sont régulièrement attaquées par un champignon tellurique, Fusarium oxysporum f. sp. lini (Fol), responsable des plus grandes pertes dans les cultures de lin. Les PGPR (Plant Growth Promoting Rhizobacteria) sont des bactéries réputées pour leurs capacités à améliorer la croissance et le développement des plantes, mais également pour leur pouvoir compétiteur au sein de la rhizosphère et leur aptitude à induire une réponse immunitaire chez les plantes. Parallèlem
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Meneghin, Silvana Perissatto [UNESP]. "Efeito da aplicação de fitorreguladores em rizobactérias isoladas de diferentes variedades de cana-de-açúcar (Saccharum spp.), no município de Araras - SP." Universidade Estadual Paulista (UNESP), 2008. http://hdl.handle.net/11449/103966.

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Made available in DSpace on 2014-06-11T19:32:55Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-04-29Bitstream added on 2014-06-13T19:43:45Z : No. of bitstreams: 1 meneghin_sp_dr_rcla.pdf: 500401 bytes, checksum: 1dbb48df89774c8c8a05446c822888e1 (MD5)<br>Universidade Estadual Paulista (UNESP)<br>Nas usinas, no início da safra, a obtenção de matéria-prima de boa qualidade é maximizada com a aplicação de fitorreguladores, os quais aumentam o teor de sacarose da cana-de-açúcar. Em áreas onde eles são aplicados, tem se observado melhor desenvolvimento e perfilhamento das plantas. Avaliou-
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Meneghin, Silvana Perissatto. "Efeito da aplicação de fitorreguladores em rizobactérias isoladas de diferentes variedades de cana-de-açúcar (Saccharum spp.), no município de Araras - SP /." Rio Claro : [s.n.], 2008. http://hdl.handle.net/11449/103966.

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Orientador: Samia Maria Tauk-Tornisielo<br>Banca: Sandra Regina Ceccato Antonini<br>Banca: Regina Teresa Rosim Monteiro<br>Banca: Antonio Ismael Bassinelo<br>Banca: Carlos Renato Corso<br>Resumo: Nas usinas, no início da safra, a obtenção de matéria-prima de boa qualidade é maximizada com a aplicação de fitorreguladores, os quais aumentam o teor de sacarose da cana-de-açúcar. Em áreas onde eles são aplicados, tem se observado melhor desenvolvimento e perfilhamento das plantas. Avaliou-se aqui o efeito da aplicação dos fitorreguladores Ethrel e Moddus sobre o crescimento da cana-de-açúcar, de f
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Zappelini, Cyril. "Étude des communautés microbiennes rhizosphériques de ligneux indigènes de sols anthropogéniques, issus d’effluents industriels." Thesis, Bourgogne Franche-Comté, 2018. http://www.theses.fr/2018UBFCD057/document.

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Mon sujet de thèse intègre l’un des projets globaux de l’UMR UFC/CNRS 6249 Chrono-Environnement intitule « stratégies de phytoremédiation basées sur l’utilisation d’arbres et de microorganismes associés », qui s’appuie, entre autre, sur 2 projets de recherche :• le projet PROLIPHYT (programme Eco-Industrie, 2013-2018, ADEME) intitulé « PROduction de LIgneux PHYtoremédiants»,• le projet PHYTOCHEM (ANR CD2i, 2013-2018) intitulé « Développement de procédés chimiques éco-innovants pour valoriser les biomasses issues des phytotechnologies ».Les objectifs généraux sont d’améliorer le potentiel de ph
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Lord, Fritz. "Untersuchungen zum Einfluss spezieller Rhizosphärenbakterien auf Pflanzenwachstum und Fusarium spp.-Toleranz bei Spargel (Asparagus officinalis L.)." Doctoral thesis, Humboldt-Universität zu Berlin, Landwirtschaftlich-Gärtnerische Fakultät, 2002. http://dx.doi.org/10.18452/14979.

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Der Einfluss der Rhizosphärenbakterien Bacillus subtilis FZB 24, FZB 37, FZB 42, Bacillus pumilus RK 13 und Streptomyces graminofaciens und des Algenpräparates Goemar Fruton Spezial® (Ascophyllum nodosum) auf Wachstum, Ertrag und Toleranz gegenüber Fusarium spp. bei Spargel wurde untersucht. Es wurden mehrjährige Parzellenfeldversuche und Modellversuche unter kontrollierten Bedingungen mit natürlich Fusarium spp. belasteten Böden und mit speziellen Fusarium Erregern inokulierten Substraten durchgeführt. Die Analyse des verwendeten Nachbaubodens ergab eine wesentlich höhere Kontamination mit F
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Desrut, Antoine. "Mécanismes moléculaires impliqués dans les interactions entre Arabidopsis thaliana et des rhizobactéries bénéfiques : Implication du transport de sucres ?" Thesis, Poitiers, 2019. http://theses.univ-poitiers.fr/63024/2019-Desrut-Antoine-These.

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Les plantes vivent en étroite relation avec des populations complexes de microorganismes, y compris des espèces de rhizobactéries communément appelées rhizobactéries promotrices de la croissance des plantes (PGPR). Les PGPR conférèrent aux plantes une meilleure croissance et tolérance aux stress biotiques et abiotiques mais les mécanismes moléculaires impliqués dans ce processus restent largement inconnus. En utilisant un système expérimental in vitro, la plante modèle Arabidopsis thaliana et la souche PGPR bien caractérisée Pseudomonas simiae WCS417r, nous avons réalisé un ensemble complet d'
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Fourneau, Eulalie. "Rhizοbactéries bénéfiques pοur les plantes : Répοnses physiοlοgiques et génétiques aux exsudats racinaires". Electronic Thesis or Diss., Normandie, 2024. http://www.theses.fr/2024NORMR096.

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La rhizosphère est la zone étroite de sol soumise à l’influence des racines des plantes qui libèrent un mélange moléculaire complexe : les exsudats racinaires. Ils permettent à la plante de recruter son microbiote rhizosphérique qui joue un rôle clé dans sa croissance et sa résistance aux stress biotiques et abiotiques. Dans le cadre de l’agroécologie, la compréhension du dialogue moléculaire racines-microbiote pourrait permettre de promouvoir l’installation de rhizobactéries bénéfiques pour les plantes (PGPR) dans la rhizosphère. Lors de cette thèse, la capacité des exsudats racinaires de col
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Kao, Tzu-Chuan, and 高子權. "Application of plant growth-promoting rhizobacteria (PGPR) in pathogen control." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/vzgp27.

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碩士<br>國立嘉義大學<br>生物農業科技學系研究所<br>106<br>Plant growth-promoting rhizobacteria (PGPR) had been applied to plant growth widely. Previously, bacterial strains of genera of Bacillus and Pseudomonas have been isolated from soil based on their ability of secreting plant hormone IAA. Evidence of antimicrobial activity of these bacterial strains included detecting genes involved in synthesis of antimicrobial compounds, colony antagonistic analysis, antimicrobial activity of bacterial culture solution, and ability of secretion of microbial proteases. The antagonism assay of dual culture and volatile compo
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