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agrobacterium rhizogenes

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https://www.readbyqxmd.com/read/28835782/genetic-transformation-and-hairy-root-induction-enhance-the-antioxidant-potential-of-lactuca-serriola-l
#1
Mohamed A El-Esawi, Amr Elkelish, Hosam O Elansary, Hayssam M Ali, Mohamed Elshikh, Jacques Witczak, Margaret Ahmad
Lactuca serriola L. is a herbaceous species, used for human nutrition and medicinal purposes. The high antioxidant capacity of L. serriola indicates the possibility of enhancing its edible and health potential by increasing the flavonoid and phenolic contents. The present study aimed at enhancing the production of phenolics and flavonoids by hairy root cultures in Lactuca serriola transformed with Agrobacterium rhizogenes strain AR15834 harbouring the rolB gene. The genetic transformation of rolB in transformed roots was validated, and rolB expression level was evaluated using real-time qPCR analysis...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28800637/biologically-active-recombinant-human-erythropoietin-expressed-in-hairy-root-cultures-and-regenerated-plantlets-of-nicotiana-tabacum-l
#2
Poornima Devi Gurusamy, Holger Schäfer, Siva Ramamoorthy, Michael Wink
Hairy root culture is a potential alternative to conventional mammalian cell culture to produce recombinant proteins due to its ease in protein recovery, low costs and absence of potentially human pathogenic contaminants. The current study focussed to develop a new platform of a hairy root culture system from Nicotiana tabacum for the production of recombinant human EPO (rhEPO), which is regularly produced in mammalian cells. The human EPO construct was amplified with C-terminal hexahistidine tag from a cDNA of Caco-2 cells...
2017: PloS One
https://www.readbyqxmd.com/read/28769947/heterologous-expression-of-panax-ginseng-pgtip1-confers-enhanced-salt-tolerance-of-soybean-cotyledon-hairy-roots-composite-and-whole-plants
#3
Jing An, Zhenmin Hu, Benning Che, Haiying Chen, Bingjun Yu, Weiming Cai
The Panax ginseng TIP gene PgTIP1 was previously demonstrated to have high water channel activity by its heterologous expression in Xenopus laevis oocytes and in yeast; it also plays a significant role in growth of PgTIP1-transgenic Arabidopsis plants under favorable conditions and has enhanced tolerance toward salt and drought treatment. In this work, we first investigated the physiological effects of heterologous PgTIP1 expression in soybean cotyledon hairy roots or composite plants mediated by Agrobacterium rhizogenes toward enhanced salt tolerance...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28709614/generation-of-recombinant-protein-shells-of-johnson-grass-chlorotic-stripe-mosaic-virus-in-tobacco-plants-and-their-use-as-drug-carrier
#4
E Alemzadeh, K Izadpanah, F Ahmadi
The development and use of virus-like particles (VLPs) is a growing field with a powerful potential in generation of nanoparticles. In the present study we have attempted to generate and use empty shells of Johnson grass chlorotic stripe mosaic virus (JgCSMV, a member of the genus Aureusvirus, family Tombusviridae) as VLP nanoparticles for drug loading. In order to successfully produce recombinant JgCSMV-derived VLPs, we followed an approach based on cloning of the JgCSMV CP gene into pBI121 vector and introduction of the latter into Agrobacterium rhizogenes and transformation of tobacco cells for coat protein expression...
October 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/28687763/a-tyrosine-aminotransferase-involved-in-rosmarinic-acid-biosynthesis-in-prunella-vulgaris-l
#5
Mei Ru, Kunru Wang, Zhenqing Bai, Liang Peng, Shaoxuan He, Yong Wang, Zongsuo Liang
Rosmarinic acid (RA) and its derivants are medicinal compounds that comprise the active components of several therapeutics. We isolated and characterised a tyrosine aminotransferase of Prunella vulgaris (PvTAT). Deduced PvTAT was markedly homologous to other known/putative plant TATs. Cytoplasmic localisation of PvTAT was observed in tobacco protoplasts. Recombinantly expressed and purified PvTAT had substrates preference for L-tyrosine and phenylpyruvate, with apparent K m of 0.40 and 0.48 mM, and favoured the conversion of tyrosine to 4-hydroxyphenylpyruvate...
July 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28567046/transcriptome-analysis-of-salicylic-acid-treatment-in-rehmannia-glutinosa-hairy-roots-using-rna-seq-technique-for-identification-of-genes-involved-in-acteoside-biosynthesis
#6
Fengqing Wang, Jingyu Zhi, Zhongyi Zhang, Lina Wang, Yanfei Suo, Caixia Xie, Mingjie Li, Bao Zhang, Jiafang Du, Li Gu, Hongzheng Sun
Rehmannia glutinosa is a common bulk medicinal material that has been widely used in China due to its active ingredients. Acteoside, one of the ingredients, has antioxidant, antinephritic, anti-inflammatory, hepatoprotective, immunomodulatory, and neuroprotective effects, is usually selected as a quality-control component for R. glutinosa herb in the Chinese Pharmacopeia. The acteoside biosynthesis pathway in R. glutinosa has not yet been clearly established. Herein, we describe the establishment of a genetic transformation system for R...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28554466/hairy-root-transgene-expression-analysis-of-a-secretory-peroxidase-pvpox1-from-common-bean-infected-by-fusarium-wilt
#7
Renfeng Xue, Xingbo Wu, Yingjie Wang, Yan Zhuang, Jian Chen, Jing Wu, Weide Ge, Lanfen Wang, Shumin Wang, Matthew W Blair
Plant peroxidases (POXs) are one of the most important redox enzymes in the defense responses. However, the large number of different plant POX genes makes it necessary to carefully confirm the function of each paralogous POX gene in specific tissues and disease interactions. Fusarium wilt is a devastating disease of common bean caused by Fusarium oxysporum f. sp. phaseoli. In this study, we evaluated a peroxidase gene, PvPOX1, from a resistant common bean genotype, CAAS260205 and provided direct evidence for PvPOX1's role in resistance by transforming the resistant allele into a susceptible common bean genotype, BRB130, via hairy root transformation using Agrobacterium rhizogenes...
July 2017: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/28553065/enhanced-production-of-hyoscyamine-and-scopolamine-from-genetically-transformed-root-culture-of-hyoscyamus-reticulatus-l-elicited-by-iron-oxide-nanoparticles
#8
Fereshte Moharrami, Bahman Hosseini, Ali Sharafi, Manouchehr Farjaminezhad
The medicinal plant Hyoscyamus reticulatus L. is a rich source of hyoscyamine and scopolamine, the tropane alkaloids. The use of hairy root cultures has focused significant attention on production of important metabolites such as stable tropane alkaloid production. Elicitation is an effective approach to induce secondary metabolite biosynthetic pathways. Hairy roots were derived from cotyledon explants inoculated with Agrobacterium rhizogenes and elicited by iron oxide nanoparticles (FeNPs) at different concentrations (0, 450, 900, 1800, and 3600 mg L(-1)) for different exposure times (24, 48, and 72 h)...
2017: In Vitro Cellular & Developmental Biology. Plant: Journal of the Tissue Culture Association
https://www.readbyqxmd.com/read/28401459/optimizing-culture-conditions-for-establishment-of-hairy-root-culture-of-semecarpus-anacardium-l
#9
Bhuban Mohan Panda, Urmil J Mehta, Sulekha Hazra
Semecarpus anacardium L. is a tree species which produces secondary metabolites of medicinal importance. Roots of the plant have been traditionally used in folk medicines. Different strains of Agrobacterium rhizogenes (A4, ATCC15834 and LBA 9402) were used for induction of hairy roots in in vitro grown tissues of the plant. Hairy root initiation was observed after 25-30 days of infection. Optimum transformation frequency of 61% was achieved on leaf explants with ATCC15834 strain. Infection time of 30 min resulted in greater transformation frequency compared to 10 and 20 min, respectively...
May 2017: 3 Biotech
https://www.readbyqxmd.com/read/28400855/ex-vitro-hairy-root-induction-in-detached-peanut-leaves-for-plant-nematode-interaction-studies
#10
Larissa Arrais Guimaraes, Bruna Medeiros Pereira, Ana Claudia Guerra Araujo, Patricia Messenberg Guimaraes, Ana Cristina Miranda Brasileiro
BACKGROUND: Peanut (Arachis hypogaea) production is largely affected by a variety of abiotic and biotic stresses, including the root-knot nematode (RKN) Meloidogyne arenaria that causes yield losses worldwide. Transcriptome studies of wild Arachis species, which harbor resistance to a number of pests and diseases, disclosed several candidate genes for M. arenaria resistance. Peanut is recalcitrant to genetic transformation, so the use of Agrobacterium rhizogenes-derived hairy roots emerged as an alternative for in-root functional characterization of these candidate genes...
2017: Plant Methods
https://www.readbyqxmd.com/read/28393691/biotechnological-approaches-for-production-of-anti-cancerous-compounds-resveratrol-podophyllotoxin-and-zerumbone
#11
Krishnadas Nandagopal, Mihir Halder, Biswabhusan Dash, Sanghamitra Nayak, Sumita Jha
Secondary metabolites from numerous plant sources have been developed as anti-cancer reagents and compounds such as resveratrol, podophyllotoxin and zerumbone are of particular importance in this regard. Since their de novo chemical synthesis is both arduous and commercially expensive, there has been an impetus to develop viable, biotechnological methods of production. Accordingly, this review focuses on recent developments in the field, highlighting the use of micropropagation, cell suspension cultures, callus cultures, hairy root cultures, recombinant microbes and genetically modified higher plants...
April 4, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28382027/potential-for-biocontrol-of-hairy-root-disease-by-a-paenibacillus-clade
#12
Lien Bosmans, Irene De Bruijn, Saskia Gerards, Rob Moerkens, Lore Van Looveren, Lieve Wittemans, Bart Van Calenberge, Anneleen Paeleman, Stefan Van Kerckhove, René De Mot, Jef Rozenski, Hans Rediers, Jos M Raaijmakers, Bart Lievens
Rhizogenic Agrobacterium biovar 1 is the causative agent of hairy root disease (HRD) in the hydroponic cultivation of tomato and cucumber causing significant losses in marketable yield. In order to prevent and control the disease chemical disinfectants such as hydrogen peroxide or hypochlorite are generally applied to sanitize the hydroponic system and/or hydroponic solution. However, effective control of HRD sometimes requires high disinfectant doses that may have phytotoxic effects. Moreover, several of these chemicals may be converted to unwanted by-products with human health hazards...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28358854/validation-of-a-hairy-roots-system-to-study-soybean-soybean-aphid-interactions
#13
Stephanie C Morriss, Matthew E Studham, Gregory L Tylka, Gustavo C MacIntosh
The soybean aphid (Aphis glycines) is one of the main insect pests of soybean (Glycine max) worldwide. Genomics approaches have provided important data on transcriptome changes, both in the insect and in the plant, in response to the plant-aphid interaction. However, the difficulties to transform soybean and to rear soybean aphid on artificial media have hindered our ability to systematically test the function of genes identified by those analyses as mediators of plant resistance to the insect. An efficient approach to produce transgenic soybean material is the production of transformed hairy roots using Agrobacterium rhizogenes; however, soybean aphids colonize leaves or stems and thus this approach has not been utilized...
2017: PloS One
https://www.readbyqxmd.com/read/28340896/bioactive-constituents-from-transformed-root-cultures-of-nepeta-teydea
#14
Braulio M Fraga, Azucena González-Coloma, Sergio Alegre-Gómez, Matías López-Rodríguez, Leonardo J Amador, Carmen E Díaz
A phytochemical study of an extract from transformed root cultures of Nepeta teydea, induced by Agrobacterium rhizogenes, led to the isolation of the following new compounds: the sesquiterpene (-)-cinalbicol, the diterpene teydeadione (6,11,14-trihydroxy-12-methoxy-abieta-5,8,11,13,15-penten-7-one), a degraded C23-triterpene (teydealdehyde) and three fatty acid esters of lanosta-7,24-dien-3β-ol. The propyl ester of rosmarinic acid was also isolated for the first time from a natural source. In addition, two dehydroabietane diterpenes, eight triterpenes and eighteen known phenolic compounds were obtained...
January 2017: Phytochemistry
https://www.readbyqxmd.com/read/28330254/enhanced-production-of-an-anti-malarial-compound-artesunate-by-hairy-root-cultures-and-phytochemical-analysis-of-artemisia-pallens-wall
#15
Zarna Pala, Vishnu Shukla, Anshu Alok, Subhash Kudale, Neetin Desai
Artemisinin and its derivatives are still one of the most effective drugs for the treatment of malaria. Artemisia pallens commonly known as Dhavanam, is an aromatic herb belonging to the family Asteraceae. Increasing the artemisinin content of A. pallens by genetic engineering would improve the availability of this much needed drug. In the present study, Agrobacterium rhizogenes (strain NCIM 5140) mediated genetic transformation of Artemisia pallens were carried out for hairy root induction. The effect of different media (Half MS, MS, MS along with BAP 0...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28271384/hairy-root-culture-optimization-and-resveratrol-production-from-vitis-vinifera-subsp-sylvesteris
#16
Sayed Mehdi Hosseini, Bahman Bahramnejad, Hamed Douleti Baneh, Aryo Emamifar, Paul H Goodwin
Resveratrol is a polyphenolic compound produced in very low levels in grapes. To achieve high yield of resveratrol in wild grape, three Agrobacterium rhizogenes strains, Ar318, ArA4 and LBA9402, were used to induce hairy roots following infection of internodes, nodes or petioles of in vitro grown Vitis vinifera subsp. sylvesteris accessions W2 and W16, and cultivar Rasha. The effects of inoculation time, age of explants, bacterial concentration and co-cultivation times were examined on the efficiency of the production of hairy roots...
April 2017: World Journal of Microbiology & Biotechnology
https://www.readbyqxmd.com/read/28256553/targeted-mutagenesis-in-the-medicinal-plant-salvia-miltiorrhiza
#17
Bin Li, Guanghong Cui, Guoan Shen, Zhilai Zhan, Luqi Huang, Jiachun Chen, Xiaoquan Qi
CRISPR/Cas9 is a powerful genome editing tool that has been extensively used in model plants and crops, such as Arabidopsis thaliana, rice, wheat, and soybean. Here, we report the use of CRISPR/Cas9 to precisely knock out the committed diterpene synthase gene (SmCPS1) involved in tanshinone biosynthesis in Salvia miltiorrhiza, a traditional Chinese medicinal herb with significant pharmacological activities, such as vasorelaxation, protection against ischemia-reperfusion injury, and antiarrhythmic effects. Three homozygous and eight chimeric mutants were obtained from 26 independent transgenic hairy root lines by Agrobacterium rhizogenes-mediated transformation...
March 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28203245/small-rnas-derived-from-the-t-dna-of-agrobacterium-rhizogenes-in-hairy-roots-of-phaseolus-vulgaris
#18
Pablo Peláez, Alejandrina Hernández-López, Georgina Estrada-Navarrete, Federico Sanchez
Agrobacterium rhizogenes is a pathogenic bacteria that causes hairy root disease by transferring bacterial DNA into the plant genome. It is an essential tool for industry and research due to its capacity to produce genetically modified roots and whole organisms. Here, we identified and characterized small RNAs generated from the transfer DNA (T-DNA) of A. rhizogenes in hairy roots of common bean (Phaseolus vulgaris). Distinct abundant A. rhizogenes T-DNA-derived small RNAs (ArT-sRNAs) belonging to several oncogenes were detected in hairy roots using high-throughput sequencing...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28137207/patent-survey-of-resveratrol-taxol-podophyllotoxin-withanolides-and-their-derivatives-used-in-anticancer-therapy
#19
Krishnadas Nandagopal, Shreya Routh
BACKGROUND: Resveratrol, taxol, podophyllotoxin, withanolides and their derivatives find applications in anti-cancer therapy. They are plant-derived compounds whose chemical structures and synthesis limit their natural availability and restrict a large-scale industrial production. Hence, their production by various biotechnological approaches may hold promise for a continuous and reliable mode of supply. OBJECTIVE: We review process and product patents in this regard...
January 27, 2017: Recent Patents on Biotechnology
https://www.readbyqxmd.com/read/27943249/metabolic-engineering-of-fatty-alcohol-production-in-transgenic-hairy-roots-of-crambe-abyssinica
#20
Magdalena Miklaszewska, Antoni Banaś, Aleksandra Królicka
Biotechnological production of fatty alcohols, important raw materials in the chemical industry, has been receiving considerable attention in recent years. Fatty alcohols are formed by the reduction of fatty acyl-CoAs or fatty acyl-ACPs catalyzed by a fatty acyl reductase (FAR). In this study, we introduced genes encoding FARs from Arabidopsis thaliana (AtFAR5) and Simmondsia chinensis (ScFAR) into Crambe abyssinica hairy roots via Agrobacterium rhizogenes-mediated transformation. The efficiency of the transformation ranged between 30 and 45%...
June 2017: Biotechnology and Bioengineering
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