Academic literature on the topic 'ACC oxidase activity'

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Journal articles on the topic "ACC oxidase activity"

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Henzi, Maria X., David L. McNeil, Mary C. Christey, and Ross E. Lill. "A tomato antisense 1-aminocyclopropane-1-carboxylic acid oxidase gene causes reduced ethylene production in transgenic broccoli." Functional Plant Biology 26, no. 2 (1999): 179. http://dx.doi.org/10.1071/pp98083.

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In this paper 11 transgenic broccoli (Brassica oleracea L. var. italica) lines containing a tomato antisense 1-aminocyclopropane-1-carboxylic acid (ACC) oxidase gene from pTOM13 were evaluated. Changes in respiration, ethylene production and ACC oxidase activity were studied in mature flowers. Averaged across all ACC oxidase transgenic lines, there was an initial increase followed by a substantial decrease in ethylene production compared with the controls. Of the 11 transgenic lines, 10 lines showed a significant reduction in fethylene production relative to the controls from 50 h after harves
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Perkins-Veazie, P., J. K. Collins, V. Russo, and B. Cartwright. "Aphids Stimulate Peroxidase Activity but Not ACC Oxidase Activity in Watermelon Plants Inoculated with Anthracnose." HortScience 31, no. 4 (1996): 677d—677. http://dx.doi.org/10.21273/hortsci.31.4.677d.

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Individually, green melon aphids (Aphis gossypi) and anthracnose (Colletotricum lagenarium) can cause serious economic damage to watermelons by reducing stands and marketable yields. Greenhouse-grown watermelon seedlings at the third true leaf stage were infected with anthracnose (106 spores/mL) and/or infested with 30 aphids per plant. At the 5th leaf stage (about 7 days after inoculation/infestation), leaf disks were harvested from plants and indicators of stress measured. Peroxidase activity increased from 0.03 to 0.28 absorbance units/mg protein-minute in leaves with anthracnose. When plan
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Emery, R. J. N., A. Kathiresan, D. M. Reid, and C. C. Chinnappa. "Ecotypic differences in rhythmicity of ethylene production in Stellaria longipes: the possible roles of ACC, MACC, and ACC oxidase." Canadian Journal of Botany 75, no. 7 (1997): 1027–33. http://dx.doi.org/10.1139/b97-114.

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The alpine tundra ecotype of Stellaria longipes is characterized by a dwarf phenotype, whereas the prairie ecotype can be semidwarf or highly elongated depending on its environment. Related to their ability to elongate, these ecotypes also show divergent abilities to produce and respond to ethylene. The prairie ecotype produces a strong daily rhythm of ethylene, which is maintained even following stress events such as wind. The alpine ecotype exhibits a much less pronounced rhythm but greatly increases ethylene production in response to stress. We investigated what differences in ethylene synt
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Bender, Renar João, Eduardo Seibert, and Jeffrey K. Brecht. "Heat treatment effects on ACC oxidase activity of 'Keitt' mangoes." Brazilian Journal of Plant Physiology 15, no. 3 (2003): 145–48. http://dx.doi.org/10.1590/s1677-04202003000300003.

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With the use of ethylene dibromide for mango disinfestation being ruled out, vapor heat or hot water treatments are the only alternatives for quarantine treatments of mangoes. Physical treatments such as heat treatments have been implicated in higher incidence of physiological disorders and enhancement of ripening processes. Therefore, the objective of the present work was to determine the effects of hot water treatments on ethylene production and on the in vitro activity of ACC oxidase. Cv. Keitt mangoes were immersed for 3 min in hot water at 53 °C or 90 min in water at 46 °C. Immediately af
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Gorny, James R., and Adel A. Kader. "Elevated CO2 and/or Low O2 Atmospheres Influence ACC Synthase and ACC Oxidase during Long-term Storage of `Golden Delicious' Apple Fruit." HortScience 30, no. 4 (1995): 782C—782. http://dx.doi.org/10.21273/hortsci.30.4.782c.

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The objective of this study was to compare and contrast the mode of action by which elevated carbon dioxide and/or reduced oxygen atmospheres inhibit ethylene biosynthesis. `Golden Delicious' apple fruit were placed at 0C in one of the following four atmospheres: 1) air; 2) air + 5% CO2; 3) 2% O2 + 98% N2; or 4) 2% O2 + 5% CO2 + 93% N2 and then sampled monthly for 4 months. Ethylene biosynthesis rates and in vitro ACC synthase activities were closely correlated in all treatments. In vitro ACC synthase activity and ethylene biosynthesis rates were lowest in fruit treated with 5% CO2 + 2% O2, wh
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Gorny, James R., and Adel A. Kader. "699 PB 309 THE MODE OF CO2 ACTION ON ACC OXIDASE AND ITS ROLE IN INHIBITION OF ETHYLENE BIOSYNTHESIS." HortScience 29, no. 5 (1994): 533b—533. http://dx.doi.org/10.21273/hortsci.29.5.533b.

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Ethylene biosynthesis of Golden Delicious apple fruit at 20°C is rapidly inhibited by a controlled atmosphere of air + 20% CO2. However, in vitro ACC oxidase activity and ACC content were not significantly different between air and air + 20% CO2 treated fruit, To determine the in vivo effects of CO2 treatment, both in vivo and in vitro enzyme activity essays were performed in en atmosphere of air or air + 20% CO2. Western blots were also performed to quantify the amount of ACC oxidase protein present in the air and air + 20% CO2 treated fruit. We believe that in vivo cytosolic pH changes, indu
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Suh, Jung Nam, Kiyoshi Ohkawa, and Beyoung Hwa Kwack. "Senescence Symptoms after Emasculation Vary among Cymbidium Cultivars." HortScience 33, no. 4 (1998): 734–35. http://dx.doi.org/10.21273/hortsci.33.4.734.

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Response of cut Cymbidium flowers to emasculation was investigated. All Cymbidium cultivars that we examined produced ethylene during senescence. There were marked cultivar differences in the changes of fresh weight, ethylene production, and lip coloration after emasculation. In the case of `Venus', flower emasculation did not alter fresh weight, ethylene production, or lip coloration. There were differences in ACC oxidase in vivo activity among the three cultivars before and after emasculation. There was a correlation between the initial ACC oxidase activity and time to lip coloration in the
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Darvish, Mohammad, Habib Shirzad, Mohammadreza Asghari, et al. "24-Epibrasinolide Modulates the Vase Life of Lisianthus Cut Flowers by Modulating ACC Oxidase Enzyme Activity and Physiological Responses." Plants 10, no. 5 (2021): 995. http://dx.doi.org/10.3390/plants10050995.

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Ethylene is the most important factor playing roles in senescence and deterioration of harvested crops including cut flowers. Brassinosteroids (BRs), as natural phytohormones, have been reported to differently modulate ethylene production and related senescence processes in different crops. This study was carried out to determine the effects of different levels of 24-epibrassinolide (EBL) on ACC oxidase enzyme activity, the final enzyme in ethylene biosynthesis pathway, vase life, and senescence rate in lisianthus cut flowers. Harvested flowers were treated with EBL (at 0, 3, 6, and 9 µmol/L)
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Perkins-Veazie, P., J. K. Collins, and B. Cartwright. "Ethylene Production in Watermelon Fruit Varies with Cultivar and Fruit Tissue." HortScience 30, no. 4 (1995): 825G—826. http://dx.doi.org/10.21273/hortsci.30.4.825g.

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To determine whether ethylene production was related to locular tissue breakdown in watermelon, plugs from ripe `Jubilee', `Black Diamond', `Tiger Baby', `Mirage', and `King of Hearts' were taken from the skin (epidermis and hypoderm), rind (hypoderm and mesocarp), and placenta (locular and heart) tissues. ACC oxidase activity was <0.05 nmol·g–1·h–1 in locule and heart locations for all cultivars. Skin tissue had the highest activity, ranging from 0. 1 8 for `Jubilee' to 0.5 to 0.62 nmol·g–1·h–1 for the other four cultivars. ACC (1-aminocyclopropane-1-carboxylic acid) and ACC oxidase activi
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Perkins-Veazie, P., J. K. Collins, and B. Cartwright. "Ethylene Production in Watermelon Fruit Varies with Cultivar and Fruit Tissue." HortScience 30, no. 4 (1995): 825G—826. http://dx.doi.org/10.21273/hortsci.30.4.825.

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To determine whether ethylene production was related to locular tissue breakdown in watermelon, plugs from ripe `Jubilee', `Black Diamond', `Tiger Baby', `Mirage', and `King of Hearts' were taken from the skin (epidermis and hypoderm), rind (hypoderm and mesocarp), and placenta (locular and heart) tissues. ACC oxidase activity was <0.05 nmol·g–1·h–1 in locule and heart locations for all cultivars. Skin tissue had the highest activity, ranging from 0. 1 8 for `Jubilee' to 0.5 to 0.62 nmol·g–1·h–1 for the other four cultivars. ACC (1-aminocyclopropane-1-carboxylic acid) and ACC oxidase activi
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Dissertations / Theses on the topic "ACC oxidase activity"

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HU, Xin-Fen, and 胡馨分. "Analyses in Gene Function of Aureusidin Synthase from Oncidium and Promoter Activity of ACC Oxidase Gene from Phalaenopsis." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/47859954491642591033.

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碩士<br>國立臺灣大學<br>園藝學研究所<br>100<br>This thesis mainly divides into two parts. The goal of the first part is to establish a research platform for production of yellow flower. Therefore, the 2X CaMV 35S and the flower-specific PtACS2 promoter were fused with aureusidin synthase gene OgAS1 from Oncidium to OgAS1 overexpress in tobacco for functional analysis. After Agrobacterium-mediated transformation, transgenic tobaccos were confirmed by Southern analysis for identification of transgene integrity and copy number. No obvious changes in phenotype of transgenic plants. To analyze content whether au
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Books on the topic "ACC oxidase activity"

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Columb, Malachy O. Local anaesthetic agents. Edited by Michel M. R. F. Struys. Oxford University Press, 2017. http://dx.doi.org/10.1093/med/9780199642045.003.0017.

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Local anaesthetic agents cause a pharmacologically induced reversible neuropathy characterized by axonal conduction blockade. They act by blocking the sodium ionophore and exhibit membrane stabilizing activity by inhibiting initiation and propagation of action potentials. They are weak bases consisting of three components: a lipophilic aromatic ring, a link, and a hydrophilic amine. The chemical link classifies them as esters or amides. Local anaesthetics diffuse through the axolemma as unionized free-base and block the ionophore in the quaternary ammonium ionized form. The speed of onset of b
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Book chapters on the topic "ACC oxidase activity"

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Satoh, Shigeru, and Yusuke Kosugi. "Escherichia coli-Based Expression and In Vitro Activity Assay of 1-Aminocyclopropane-1-Carboxylate (ACC) Synthase and ACC Oxidase." In Methods in Molecular Biology. Springer New York, 2017. http://dx.doi.org/10.1007/978-1-4939-6854-1_5.

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Kadyrzhanova, D., T. J. McCully, T. Warner, K. Vlachonasios, Z. Wang, and D. R. Dilley. "Analysis of ACC Oxidase Activity by Site-Directed Mutagenesis of Conserved Amino Acid Residues." In Biology and Biotechnology of the Plant Hormone Ethylene II. Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4453-7_2.

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Arnao, M. B., and J. Hernández-Ruiz. "Inhibition of ACC oxidase activity by melatonin and indole-3-acetic acid in etiolated lupin hypocotyls." In Advances in Plant Ethylene Research. Springer Netherlands, 2007. http://dx.doi.org/10.1007/978-1-4020-6014-4_21.

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Wakayama, T. "Polyphenol Oxidase Activity in Japanese Apples." In ACS Symposium Series. American Chemical Society, 1995. http://dx.doi.org/10.1021/bk-1995-0600.ch020.

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Flurkey, William H., and Janis Ingebrigtsen. "Polyphenol Oxidase Activity and Enzymatic Browning in Mushrooms." In ACS Symposium Series. American Chemical Society, 1989. http://dx.doi.org/10.1021/bk-1989-0405.ch004.

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Reddy, Krishna N., Ujjana B. Nandihalli, Hee Jae Lee, Mary V. Duke, and Stephen O. Duke. "Predicting Activity of Protoporphyrinogen Oxidase Inhibitors by Computer-Aided Molecular Modeling." In ACS Symposium Series. American Chemical Society, 1995. http://dx.doi.org/10.1021/bk-1995-0589.ch015.

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Zhang, Ruofei, Hanqing Zhao, and Kelong Fan. "Structure-Activity Mechanism of Iron Oxide Nanozymes." In ACS Symposium Series. American Chemical Society, 2022. http://dx.doi.org/10.1021/bk-2022-1422.ch001.

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James, D. R., R. A. Felix, W. J. Michaely, et al. "Synthesis and Structure-Activity Relationships of Benzoheterocyclic and Pyridoheterocyclic Protoporphyrinogen Oxidase Herbicides." In ACS Symposium Series. American Chemical Society, 2001. http://dx.doi.org/10.1021/bk-2002-0800.ch007.

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Larsson, Simona, Pierre Cassland, Leif J. Jönsson, and Nils-Olof Nilvebrant. "Treatment of Pulp and Paper Industry Process Waters with Oxalate Oxidase: Compounds Interfering with the Activity." In ACS Symposium Series. American Chemical Society, 2003. http://dx.doi.org/10.1021/bk-2003-0855.ch005.

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Wachs, I. E., G. Deo, J.-M. Jehng, D. S. Kim, and H. Hu. "The Activity and Selectivity Properties of Supported Metal Oxide Catalysts During Oxidation Reactions." In ACS Symposium Series. American Chemical Society, 1996. http://dx.doi.org/10.1021/bk-1996-0638.ch021.

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Conference papers on the topic "ACC oxidase activity"

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ELObeid, Tahra, Susanna Phoboo, and Kalidas Shetty. "Anti-diabetic and Anti-hypertensive Potential of Indigenous Edible plants of Qatar." In Qatar University Annual Research Forum & Exhibition. Qatar University Press, 2020. http://dx.doi.org/10.29117/quarfe.2020.0142.

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Aizoon Canariense, Cynomorium Coccineum, Glossonema Edule, and Malva Parviflora, edible desert plants from Qatar, were selected to determine levels of phenolic bioactives and potential health benefits for managing early stages of type 2 diabetes and hypertension. Aqueous extracts of C. Cocineum, contained soluble phenolics and had relatively high levels of antioxidant activity associated with α-glucosidase, α-amylase, and angiotensin- converting enzyme (ACE). G. Edule and M. Parviflora had moderate levels of anti-oxidant potential, soluble phenolics, and ACE inhibitory activity. The medicinal
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Akbar, Himyan, Salma Habib, Mohammed Mahroof Tahir, and Lakshmaiah Sreerama. "Synthesis and Characterization of Vanadium (IV)-Flavonoid Complexes and its Antioxidant ability toward Superoxide and Radical Scavenging." In Qatar University Annual Research Forum & Exhibition. Qatar University Press, 2020. http://dx.doi.org/10.29117/quarfe.2020.0109.

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In this project Vanadium complex -Vanadium (IV) - flavone was synthesized using vanadium (IV) acetylacetonate (VO(acac)2) complex and 3-hydroxy-6-methyl flavone ligand. The complex stability was checked using FTIR and UV-vis spectroscopies. Peackes around 990 cm-1 conforms the formation of (V=O) in the complex, as well as (V-O) around 790 cm-1. In UV-Vis spectrum peak around 400-450 nm was noticed, which conforms the formation of the vanadium complex that correspond to the ligand to metal charge transfer (LMCT) transition. The radical scavenging abilities of vanadium complex were investigated
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Hassan, Noraakinah, Kamariah Noor Ismail, Ku Halim Ku Hamid, and Abdul Hadi. "Catalytic activity of calcium-based mixed metal oxides nanocatalysts in transesterification reaction of palm oil." In ADVANCED MATERIALS FOR SUSTAINABILITY AND GROWTH: Proceedings of the 3rd Advanced Materials Conference 2016 (3rd AMC 2016). Author(s), 2017. http://dx.doi.org/10.1063/1.5010463.

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Reports on the topic "ACC oxidase activity"

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Pesis, Edna, and Mikal Saltveit. Postharvest Delay of Fruit Ripening by Metabolites of Anaerobic Respiration: Acetaldehyde and Ethanol. United States Department of Agriculture, 1995. http://dx.doi.org/10.32747/1995.7604923.bard.

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The use of pretreatments for 24 h prior to storage, under anaerobic condtions, or in the presence of the natural metabolic products, acetaldehyde (AA) and ethanol, to delay fruit ripening, was found to be effective with several climacteric fruits, among them avocado, mango, peach and tomato. The delay in ripening of avocado, peach and tomato was accompanied by inhibition of ethylene production and of fruit softening. The maintenance of fruit firmness was associated with a decrease in the activities of cell-wall-degrading enzymes, including endoglucanases (Cx), polygalacturonases (PG) and b-gal
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Woodson, William, Shimon Mayak, and Haim Rabinowitch. Physiological and Molecular Characterization of the Response to Ethylene during Senescence of Carnation Genotypic Variants. United States Department of Agriculture, 1995. http://dx.doi.org/10.32747/1995.7613011.bard.

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The senescence of carnation (Dianthus caryophyllus L.) flowers is associated with increased production of the phytohormone ethylene, which in turn serves to initiate and regulate the processes involved in programmed petal death. We investigated the regulation of ethylene production and petal senescence in carnation. Several carnation genotypes were identified that exhibited extended vase-life in comparison to flowers from typical commercial cultivars. The capacity of these genotypes to produce ethylene during postharvest vase-life and to respond to exogenous ethylene was investigated. Several
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Carpita, Nicholas C., Ruth Ben-Arie, and Amnon Lers. Pectin Cross-Linking Dynamics and Wall Softening during Fruit Ripening. United States Department of Agriculture, 2002. http://dx.doi.org/10.32747/2002.7585197.bard.

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Our study was designed to elucidate the chemical determinants of pectin cross-linking in developing fruits of apple and peach and to evaluate the role of breakage cross-linkages in swelling, softening, and cell separation during the ripening. Peaches cell walls soften and swell considerably during the ripening, whereas apples fruit cells maintain wall firmness but cells separate during late stages of ripening. We used a "double-reduction" technique to show that levels of non-methyl esters of polyuronic acid molecules were constant during the development and ripening and decreased only in overr
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Porat, Ron, Gregory T. McCollum, Amnon Lers, and Charles L. Guy. Identification and characterization of genes involved in the acquisition of chilling tolerance in citrus fruit. United States Department of Agriculture, 2007. http://dx.doi.org/10.32747/2007.7587727.bard.

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Citrus, like many other tropical and subtropical fruit are sensitive to chilling temperatures. However, application of a pre-storage temperature conditioning (CD) treatment at 16°C for 7 d or of a hot water brushing (HWB) treatment at 60°C for 20 sec remarkably enhances chilling tolerance and reduces the development of chilling injuries (CI) upon storage at 5°C. In the current research, we proposed to identify and characterize grapefruit genes that are induced by CD, and may contribute to the acquisition of fruit chilling tolerance, by two different molecular approaches: cDNA array analysis an
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Horwitz, Benjamin A., and Barbara Gillian Turgeon. Fungal Iron Acquisition, Oxidative Stress and Virulence in the Cochliobolus-maize Interaction. United States Department of Agriculture, 2012. http://dx.doi.org/10.32747/2012.7709885.bard.

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Our project focused on genes for high affinity iron acquisition in Cochliobolus heterostrophus, a necrotrophic pathogen of maize, and their intertwined relationship to oxidative stress status and virulence of the fungus on the host. An intriguing question was why mutants lacking the nonribosomal peptide synthetase (NRPS) gene (NPS6) responsible for synthesis of the extracellular siderophore, coprogen, are sensitive to oxidative stress. Our overall objective was to understand the mechanistic connection between iron stress and oxidative stress as related to virulence of a plant pathogen to its h
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