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phenylalanine/soja
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Sequence and structure of a phenylalanine ammonia-lyase gene from Glycine max.
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The gene encoding a key enzyme in anthocyanin biosynthesis, phenylalanine ammonia-lyase (PAL), was cloned from soybean (Glycine max). The purpose was to obtain a molecular probe to study the organization of this gene family in soybean and to examine novel regulatory mechanisms present in the
Phenylalanine is required to promote specific developmental responses and prevents cellular damage in response to ultraviolet light in soybean (Glycine max) during the seed-to-seedling transition.
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UV-radiation elicits a suite of developmental (photomorphogenic) and protective responses in plants, but responses early post-germination have received little attention, particularly in intensively bred plants of economic importance. We examined germination, hypocotyl elongation, leaf pubescence and
Rapid induction of phenylalanine ammonia-lyase and chalcone synthase mRNAs during fungus infection of soybean (Glycine max L.) roots or elicitor treatment of soybean cell cultures at the onset of phytoalexin synthesis.
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The differential regulation of the activities and amounts of mRNAs for two enzymes involved in isoflavonoid phytoalexin biosynthesis in soybean was studied during the early stages after inoculation of primary roots with zoospores from either race 1 (incompatible, host resistant) or race 3
Modification of L-phenylalanine ammonia-lyase in soybean cell suspension cultures by 2-aminooxyacetate and L-2-aminooxy-3-phenylpropionate.
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Suspension-cultured cells of soybean (Glycine max (L.) Merr. cv. Kanrich) produce large amounts of phenylalanine ammonia-lyase (PAL; EC 4.3.1.5), the first enzyme of phenylpropanoid metabolism, during growth. 2-Aminooxyacetic acid (AOA) and L-2-aminooxy-3-phenylpropionic acid (L-AOPP) inhibit the
L-DOPA increases lignification associated with Glycine max root growth-inhibition.
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L-3,4-dihydroxyphenylalanine (L: -DOPA), an allelochemical exuded from the roots of velvet bean [Mucuna pruriens (L.) DC. var. utilis], presents a highly inhibitory action to plant growth. The effects of L-DOPA on phenylalanine ammonia-lyase (PAL, EC 4.3.1.5) and peroxidase (POD, EC 1.11.1.7)
Peroxidase and phenylalanine ammonia-lyase activities, phenolic acid contents, and allelochemicals-inhibited root growth of soybean.
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The influence of the allelochemicals ferulic (FA) and vanillic (VA) acids on peroxidase (POD, EC 1.11.1.7) and phenylalanine ammonia-lyase (PAL, EC 4.3.1.5) activities and their relationships with phenolic acid (PhAs) contents and root growth of soybean (Glycine max (L.) Merr.) were examined.
Abscisic Acid Suppression of Phenylalanine Ammonia-Lyase Activity and mRNA, and Resistance of Soybeans to Phytophthora megasperma f.sp. glycinea.
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Etiolated hypocotyls of the resistant soybean (Glycine max [L.] Merr.) cultivar Harosoy 63 became susceptible to Phytophthora megasperma (Drechs.) f.sp. glycinea (Hildeb.) Kuan and Erwin race 1 after treatment with abscisic acid. Susceptibility was expressed by increases in lesion size and a major
A mechanistic study on the toxic effect of copper oxide nanoparticles in soybean (Glycine max L.) root development and lignification of root cells.
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Copper oxide nanoparticles (CuONPs) are widely used in several products and their release into the environment can cause toxicity to major food crops. In this study, toxic responses as a result of CuONPs exposure were studied in soybean (Glycine max L.) seedlings. The plants were grown in 1/2
Phytoalexin synthesis in soybean cells: elicitor induction of phenylalanine ammonia-lyase and chalcone synthase mRNAs and correlation with phytoalexin accumulation.
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A glucan elicitor from cell walls of the fungus Phytophthora megasperma f. sp. glycinea, a pathogen of soybean (Glycine max), induced large and rapid increases in the activities of enzymes of general phenylpropanoid metabolism, phenylalanine ammonia-lyase, and of the flavonoid pathway, acetyl-CoA
A gene expression analysis of syncytia laser microdissected from the roots of the Glycine max (soybean) genotype PI 548402 (Peking) undergoing a resistant reaction after infection by Heterodera glycines (soybean cyst nematode).
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The syncytium is a nurse cell formed within the roots of Glycine max by the plant parasitic nematode Heterodera glycines. Its development and maintenance are essential for nematode survival. The syncytium appears to undergo two developmental phases during its maturation into a functional nurse cell.
Lignification and related enzymes in Glycine max root growth-inhibition by ferulic acid.
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Changes in soluble and cell wall bound peroxidase (POD, EC 1.11.1.7) activity, phenylalanine ammonia-lyase (PAL, EC 4.3.1.5) activity, and lignin content in roots of ferulic acid-stressed soybean (Glycine max (L.) Merr.) seedlings and their relationships with root growth were investigated.
A Pod Leakage Technique for Phloem Translocation Studies in Soybean (Glycine max [L.] Merr.).
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Radioactive photosynthetic assimilates, translocated to a soybean (Glycine max [L.] Merr. ;Fiskeby V') pod can be measured directly by excising the stylar tip of the pod under 20 mm ethylenediaminetetraacetate solution (pH 7.0) and allowing the material to leak into the solution. Pods at the source
Involvement of Oxidative Processes in the Signaling Mechanisms Leading to the Activation of Glyceollin Synthesis in Soybean (Glycine max).
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The efficiency of hydroperoxides (tert-butyl hydroperoxide, hydrogen peroxide) and sulfhydryl reagents (iodoacetamide, p-chloromercuribenzene sulfonic acid) as glyceollin elicitors was examined in relation to sulfhydryl oxidation, or alteration, and to lipid peroxidation, in 3-d-old soybean
Antioxidant enzymes and isoflavonoids in chilled soybean (Glycine max (L.) Merr.) seedlings.
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Changes of activity antioxidant enzymes and of levels of isoflavonoids were studied in the roots and hypocotyls of the etiolated soybean (Glycine max (L.) Merr. var. Essor) seedlings, submitted to cold. Prolonged exposure to 1 degrees C inhibited hypocotyl and root elongation and limited their
Induced defense-related proteins in soybean (Glycine max L. Merrill) plants by Carnobacterium sp. SJ-5 upon challenge inoculation of Fusarium oxysporum.
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The aim of the present study was to analyze induced expression of defense-related proteins in the soybean plants by rhizobacterial stain Carnobacterium sp. SJ-5 upon challenge inoculation with Fusarium oxysporum. Determination of the enzymatic activity of the different defense-related enzymes,
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