Academic literature on the topic 'Phenolic compounds Rust'

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Journal articles on the topic "Phenolic compounds Rust"

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Johnson, Jon D., and Yong Kim. "The role of leaf chemistry in Melampsora medusae infection of hybrid poplar: effects of leaf development and fungicide treatment." Canadian Journal of Forest Research 35, no. 4 (2005): 763–71. http://dx.doi.org/10.1139/x05-009.

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Immature leaves of poplars are immune to Melampsora leaf rust infection, regardless of the level of resistance or susceptibility of older leaves. Leaf phenolic and protein concentrations were quantified in leaves of varying maturity (measured by leaf plastochron index, LPI) from a rust-susceptible, interspecific hybrid poplar clone, 47-174 (Populus trichocarpa Torr. & Gray × Populus deltoides Bartr. ex Marsh.). Using leaf water extracts and apoplastic solutions, concentrations of phenolics and proteins decreased as LPI increased. Urediniospore germination increased 3-fold, and hyphae elong
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Kalisz, Stanisław, Jan Oszmiański, and Aneta Wojdyło. "Increased content of phenolic compounds in pear leaves after infection by the pear rust pathogen." Physiological and Molecular Plant Pathology 91 (July 2015): 113–19. http://dx.doi.org/10.1016/j.pmpp.2015.07.001.

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Gil Azinheira, Helena, Maria do Céu Silva, Pedro Talhinhas, et al. "Non-host resistance responses of Arabidopsis thaliana to the coffee leaf rust fungus (Hemileia vastatrix)." Botany 88, no. 7 (2010): 621–29. http://dx.doi.org/10.1139/b10-039.

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Leaf rust, caused by Hemileia vastatrix Berk & Broome, is the most destructive fungal disease of coffee. In the absence of a suitable gene validation system in coffee, the objective of this study was to investigate whether the model plant Arabidopsis thaliana (L.) Heynh. may be used as a heterologous system for the molecular dissection of coffee responses to leaf rust. Histological examination of A. thaliana (Col-0) leaves inoculated with H. vastatrix (race II) showed that by 24 h after inoculation (hai), H. vastatrix uredospores differentiated appressoria and penetrated the stomata, but f
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Ganthaler, Andrea, Wolfgang Stöggl, Stefan Mayr, et al. "Association genetics of phenolic needle compounds in Norway spruce with variable susceptibility to needle bladder rust." Plant Molecular Biology 94, no. 3 (2017): 229–51. http://dx.doi.org/10.1007/s11103-017-0589-5.

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Jia, Yuanfeng, Nana Ren, Huadong Yue, Jianru Deng, and Yali Liu. "Preparation and properties of natural gallic acid based rust conversion emulsion." Pigment & Resin Technology 45, no. 3 (2016): 191–98. http://dx.doi.org/10.1108/prt-12-2014-0115.

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Purpose The paper developed a novel gallic acid-based rust conversion emulsion (RCE) that is applied in the treatment of rusted steels. The purpose of this paper is to investigate the methods for the synthesis of RCE and study the mechanism of rust conversion. Design/methodology/approach Conversion emulsion was prepared using styrene, acrylate and self-developed gallic acid (GA)-based rust converter (GRC) via seed emulsion polymerisation. The polymerisable GRC was synthesised by the ring-opening reaction of glycidyl methacrylate with natural GA. The effects of the GRC dosage and its feeding mo
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Sivadasan, Unnikrishnan, Cao Chenhao, Katri Nissinen, Tendry Randriamanana, Line Nybakken, and Riitta Julkunen-Tiitto. "Growth and defence of aspen (Populus tremula) after three seasons under elevated temperature and ultraviolet-B radiation." Canadian Journal of Forest Research 48, no. 6 (2018): 629–41. http://dx.doi.org/10.1139/cjfr-2017-0380.

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The predicted climate change will affect the growth and secondary chemistry of plants, but most studies only include leaves and leave out the effects on the secondary chemistry of other plant parts. In a field experiment, we studied the stem phenolic chemistry, as well as the growth of male and female genotypes, of aspen (Populus tremula L.) after three years under single (T, UVA, UVB) and combined (UVA + T, UVB + T) treatments at elevated temperature (T, +2 °C) and ultraviolet-B radiation (+30% UVB). In addition, bud mass and photosynthesis, as well as leaf rust attack and leaf herbivory, wer
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López-Velázquez, Julio César, José Nabor Haro-González, Soledad García-Morales, et al. "Evaluation of the Physicochemical Properties of Chitosans in Inducing the Defense Response of Coffea arabica against the Fungus Hemileia vastatrix." Polymers 13, no. 12 (2021): 1940. http://dx.doi.org/10.3390/polym13121940.

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Chitosan is a natural polymer, and its biological properties depend on factors such as the degree of deacetylation and polymerization, viscosity, molecular mass, and dissociation constant. Chitosan has multiple advantages: it is biodegradable, biocompatible, safe, inexpensive, and non-toxic. Due to these characteristics, it has a wide range of applications. In agriculture, one of the most promising properties of chitosan is as an elicitor in plant defense against pathogenic microorganisms. In this work, four kinds of chitosan (practical grade, low molecular weight, medium molecular weight, and
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dos Santos, Karen, Gervais Pelletier, Armand Séguin, et al. "Unrelated Fungal Rust Candidate Effectors Act on Overlapping Plant Functions." Microorganisms 9, no. 5 (2021): 996. http://dx.doi.org/10.3390/microorganisms9050996.

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Rust fungi cause epidemics that threaten the production of important plant species, such as wheat and soy. Melampsora larici-populina (Mlp) causes the poplar rust and encodes at least 1184 candidate effectors (CEs) whose functions are poorly known. In this study, we sequenced the transcriptome and used mass spectrometry to analyze the metabolome of Arabidopsis plants constitutively expressing 14 Mlp CEs and of a control line to discover alterations leading to plant susceptibility. We found 2299 deregulated genes across the experiment. Genes involved in pattern-triggered immunity, such as FRK1,
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Allen, Eric A., P. V. Blenis, and Y. Hiratsuka. "Early symptom development in lodgepole pine seedlings infected with Endocronartium harknessii." Canadian Journal of Botany 68, no. 2 (1990): 270–77. http://dx.doi.org/10.1139/b90-037.

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Six-week-old Pinus contorta seedlings were inoculated with spores of the western gall rust fungus Endocronartium harknessii. Of 660 seedlings inoculated, 174 showed early symptoms and were sampled for histological observation in the 7 weeks following inoculation. Pigmentation of epidermal cells was the first externally visible response to infection, generally occurring 14–28 days after inoculation. Developing symptoms were extremely variable, ranging from little or no visible response to severe necrosis. The appearance of external symptoms was largely due to changes occurring in underlying inf
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Nissinen, Katri, Virpi Virjamo, Tendry Randriamanana, et al. "Responses of growth and leaf phenolics in European aspen (Populus tremula) to climate change during juvenile phase change." Canadian Journal of Forest Research 47, no. 10 (2017): 1350–63. http://dx.doi.org/10.1139/cjfr-2017-0188.

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In trees, the change from juvenile to adult vegetative phase can last for years. In Populus tremula L., this phase change is characterized by a morphological change in leaf shape, as leaves in the seedling phase typically are sharp-tipped, while saplings and trees have round-tipped leaves. In an open-field experiment, we studied the separate and combined effects of enhanced temperature and UVB radiation on 2-year-old P. tremula plantlets undergoing phase change. The concentration of salicylates was higher in the seedling-phase plants than in tree-type plants. In contrast, the concentration of
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Dissertations / Theses on the topic "Phenolic compounds Rust"

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Salgado, Paula Rodrigues. "Compostos fenólicos relacionados à resistência do cafeeiro ao bicho-mineiro (Leucoptera coffeella) e à ferrugem (Hemileia vastatrix)." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/11/11136/tde-05082009-104355/.

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As plantas apresentam diferentes e complexos mecanismos de defesa, que atuam em conjunto, em respostas a estresses bióticos e abióticos, cuja natureza e intensidade de resposta variam com a idade, o grau de adaptação e a fenologia (OLIVEIRA, 2003). O objetivo principal da pesquisa consiste em: (i) identificar os ácidos clorogênicos nas folhas de Coffea arabica L., cultivar Obatã IAC 1669-20, Catuaí Vermelho IAC 99, e das populações em seleção H14945-46 e H20049, e (ii) quantificar as várias classes de ácidos clorogênicos, nos mesmos genótipos, durante a fase reprodutiva do cafeeiro (florescime
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