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Relevant bibliographies by topics / IAA biosynthesis

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Academic literature on the topic 'IAA biosynthesis'

Author: Grafiati

Published: 5 June 2025

Last updated: 2 August 2025

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Journal articles on the topic "IAA biosynthesis"

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Legault, Geneviève S., Sylvain Lerat, Philippe Nicolas, and Carole Beaulieu. "Tryptophan Regulates Thaxtomin A and Indole-3-Acetic Acid Production in Streptomyces scabiei and Modifies Its Interactions with Radish Seedlings." Phytopathology® 101, no. 9 (2011): 1045–51. http://dx.doi.org/10.1094/phyto-03-11-0064.

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The virulence of Streptomyces scabiei, the causal agent of common scab, depends mainly on the production of the toxin thaxtomin A. S. scabiei also produces indole-3-acetic acid (IAA) but the role of this hormone in the interaction between pathogenic streptomycetes and plants has not yet been elucidated. Tryptophan is a biosynthetic precursor of both IAA and thaxtomin A. In this study, the effect of tryptophan on thaxtomin A and IAA production as well as its effect on the transcription of the corresponding biosynthetic genes in S. scabiei has been analyzed. In vitro IAA production depended on t

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Malhotra, Mandira, and Sheela Srivastava. "Targeted engineering of Azospirillum brasilense SM with indole acetamide pathway for indoleacetic acid over-expression." Canadian Journal of Microbiology 52, no. 11 (2006): 1078–84. http://dx.doi.org/10.1139/w06-071.

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Rhizospheric bacterial strains are known to produce indole-3-acetic acid (IAA) through different pathways, and such IAA may be beneficial to plants at low concentrations. IAA biosynthesis by a natural isolate of Azospirillum brasilense SM was studied and observed to be tryptophan-inducible and -dependent in nature. While our work demonstrated the operation of the indole pyruvic acid pathway, the biochemical and molecular evidence for the genes of the indole acetamide (IAM) pathway were lacking in A. brasilense SM. This led us to use the IAM pathway genes as targets for metabolic engineering, w

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Brandi, M., E. M. Clark, and S. E. Lindow. "Characterization of the indole-3-acetic acid (IAA) biosynthetic pathway in an epiphytic strain of Erwinia herbicola and IAA production in vitro." Canadian Journal of Microbiology 42, no. 6 (1996): 586–92. http://dx.doi.org/10.1139/m96-079.

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An epiphytic strain of Erwinia herbicola (strain 299R) synthesized indole-3-acetic acid (IAA) from indole-3-pyruvic acid and indole-3-acetaldehyde, but not from indole-3-acetamide and other intermediates of various IAA biosynthetic pathways in enzyme assays. TLC, HPLC, and GC–MS analyses revealed the presence of indole-3-pyruvic acid, indole-3-ethanol, and IAA in culture supernatants of strain 299R. Indole-3-acetaldehyde was detected in enzyme assays. Furthermore, strain 299R genomic DNA shared no homology with the iaaM and iaaH genes from Pseudomonas syringae pv. savastanoi, even in Southern

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Bianco, C., B. Senatore, S. Arbucci, G. Pieraccini, and R. Defez. "Modulation of Endogenous Indole-3-Acetic Acid Biosynthesis in Bacteroids within Medicago sativa Nodules." Applied and Environmental Microbiology 80, no. 14 (2014): 4286–93. http://dx.doi.org/10.1128/aem.00597-14.

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ABSTRACTTo evaluate the dose-response effects of endogenous indole-3-acetic acid (IAA) onMedicagoplant growth and dry weight production, we increased the synthesis of IAA in both free-living and symbiosis-stage rhizobial bacteroids duringRhizobium-legume symbiosis. For this purpose, site-directed mutagenesis was applied to modify an 85-bp promoter sequence, driving the expression ofiaaMandtms2genes for IAA biosynthesis. A positive correlation was found between the higher expression of IAA biosynthetic genes in free-living bacteria and the increased production of IAA under both free-living and

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Uc-Chuc, Miguel A., Cleyre Pérez-Hernández, Rosa M. Galaz-Ávalos, Ligia Brito-Argaez, Víctor Aguilar-Hernández, and Víctor M. Loyola-Vargas. "YUCCA-Mediated Biosynthesis of the Auxin IAA Is Required during the Somatic Embryogenic Induction Process in Coffea canephora." International Journal of Molecular Sciences 21, no. 13 (2020): 4751. http://dx.doi.org/10.3390/ijms21134751.

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Despite the existence of considerable research on somatic embryogenesis (SE), the molecular mechanism that regulates the biosynthesis of auxins during the SE induction process remains unknown. Indole-3-acetic acid (IAA) is an auxin that is synthesized in plants through five pathways. The biosynthetic pathway most frequently used in this synthesis is the conversion of tryptophan to indol-3-pyruvic acid (IPA) by tryptophan aminotransferase of Arabidopsis (TAA) followed by the conversion of IPA to IAA by enzymes encoded by YUCCA (YUC) genes of the flavin monooxygenase family; however, it is uncle

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Pirog, T. P., D. V. Piatetska, N. O. Klymenko, and G. O. Iutynska. "Ways of Auxin Biosynthesis in Microorganisms." Mikrobiolohichnyi Zhurnal 84, no. 2 (2022): 57–72. http://dx.doi.org/10.15407/microbiolj84.02.057.

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Among plant hormones, auxins, in particular indole-3-acetic acid (IAA), are the most studied and researched. Almost all groups of soil microorganisms, both plant-associated and non-plant-associated bacteria, fungi, and phytopathogenic microorganisms are capable of producing auxins. The development of preparations for crop production is directly related to the production of bacterial strains with high auxin-synthesizing potential, which is possible only with a full understanding of the ways of regulation and synthesis of auxins in bacteria. The synthesis of auxins in microorganisms can take pla

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Jahn, Linda, Uta Hofmann, and Jutta Ludwig-Müller. "Indole-3-Acetic Acid Is Synthesized by the Endophyte Cyanodermella asteris via a Tryptophan-Dependent and -Independent Way and Mediates the Interaction with a Non-Host Plant." International Journal of Molecular Sciences 22, no. 5 (2021): 2651. http://dx.doi.org/10.3390/ijms22052651.

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The plant hormone indole-3-acetic acid (IAA) is one of the main signals playing a role in the communication between host and endophytes. Endophytes can synthesize IAA de novo to influence the IAA homeostasis in plants. Although much is known about IAA biosynthesis in microorganisms, there is still less known about the pathway by which IAA is synthesized in fungal endophytes. The aim of this study is to examine a possible IAA biosynthesis pathway in Cyanodermella asteris. In vitro cultures of C. asteris were incubated with the IAA precursors tryptophan (Trp) and indole, as well as possible inte

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De Fretes, Charlie Ester, Langkah Sembiring, and Yekti Asih Purwestri. "Characterization of Streptomyces spp. Producing Indole-3-acetic acid as Biostimulant Agent." Indonesian Journal of Biotechnology 18, no. 2 (2015): 83. http://dx.doi.org/10.22146/ijbiotech.7872.

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Twenty six isolates of Streptomyces spp. obtained from Cyperus rotundus L. rhizosphere were tested forability to produce indole-3-acetic acid (IAA) in yeast malt extract (YM) medium containing 2 mg/mL tryptophan.Screening of the isolates for ability to produce IAA was carried out by adding Salkowski reagent in bacteriaculture and was measured quantitatively by spectrophotometer at λ 530 nm. Thin Layer Chromatography (TLC)method was used to determine IAA. To ensure the IAA production in Streptomyces isolates, gene involved inIAA biosynthesis was detected by amplifying Tryptophan Monooxigenase (

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Yang, Shihui, Qiu Zhang, Jianhua Guo, et al. "Global Effect of Indole-3-Acetic Acid Biosynthesis on Multiple Virulence Factors of Erwinia chrysanthemi 3937." Applied and Environmental Microbiology 73, no. 4 (2006): 1079–88. http://dx.doi.org/10.1128/aem.01770-06.

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ABSTRACT Production of the plant hormone indole-3-acetic acid (IAA) is widespread among plant-associated microorganisms. The non-gall-forming phytopathogen Erwinia chrysanthemi 3937 (strain Ech3937) possesses iaaM (ASAP16562) and iaaH (ASAP16563) gene homologues. In this work, the null knockout iaaM mutant strain Ech138 was constructed. The IAA production by Ech138 was reduced in M9 minimal medium supplemented with l-tryptophan. Compared with wild-type Ech3937, Ech138 exhibited reduced ability to produce local maceration, but its multiplication in Saintpaulia ionantha was unaffected. The pecta

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Patten, Cheryl L., and Bernard R. Glick. "Bacterial biosynthesis of indole-3-acetic acid." Canadian Journal of Microbiology 42, no. 3 (1996): 207–20. http://dx.doi.org/10.1139/m96-032.

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Production of the phytohormone indole-3-acetic acid (IAA) is widespread among bacteria that inhabit the rhizosphere of plants. Several different IAA biosynthesis pathways are used by these bacteria, with a single bacterial strain sometimes containing more than one pathway. The level of expression of IAA depends on the biosynthesis pathway; the location of the genes involved, either on chromosomal or plasmid DNA, and their regulatory sequences; and the presence of enzymes that can convert active, free IAA into an inactive, conjugated form. The role of bacterial IAA in the stimulation of plant g

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Dissertations / Theses on the topic "IAA biosynthesis"

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Sardar, Puspendu [Verfasser]. "Molecular characterization and evolution of indole-3-acetic acid (IAA) biosynthesis pathway in the filamentous fungus Neurospora crassa / Puspendu Sardar." Kiel : Universitätsbibliothek Kiel, 2018. http://d-nb.info/1151509523/34.

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Kallenbach, Mario [Verfasser], Georg Akademischer Betreuer] Pohnert, Ian T. [Akademischer Betreuer] [Baldwin, and Jean-Luc [Akademischer Betreuer] Wolfender. "The ecological role of the activation of oxylipin biosynthesis in plants as a response to insect herbivory / Mario Kallenbach. Gutachter: Georg Pohnert ; Ian T. Baldwin ; Jean-Luc Wolfender." Jena : Thüringer Universitäts- und Landesbibliothek Jena, 2012. http://d-nb.info/1027707564/34.

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Ullmann-Zeunert, Lynn [Verfasser], Ian T. [Akademischer Betreuer] Baldwin, Ralf [Akademischer Betreuer] Oelmüller, and Dam Nicole [Akademischer Betreuer] van. "Trade-offs of induced herbivore defense in Nicotiana attenuata : the role of early signaling and defense metabolite biosynthesis / Lynn Ullmann-Zeunert. Gutachter: Ian T. Baldwin ; Ralf Oelmüller ; Nicole van Dam." Jena : Thüringer Universitäts- und Landesbibliothek Jena, 2013. http://d-nb.info/1041255861/34.

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Quittenden, LJ. "Auxin biosynthesis in Pisum sativum : a physico-chemical perspective." Thesis, 2011. https://eprints.utas.edu.au/12496/2/whole_minus_chap._4-Quittenden_PhD_thesis_final%5B1%5D.pdf.

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There are a number of putative tryptophan-dependent pathways leading to the bioactive auxin, indole-3-acetic acid (IAA) in plants, although none of these is fully characterised in terms of the isolation of genes for enzymatic reactions, and identification and quantification of precursor compounds. Herein, the tryptamine pathway (tryptophan – tryptamine - indole-3-acetaldehyde - IAA), the indole-3-pyruvic acid pathway (tryptophan - indole-3-pyruvic acid- IAA) and the indoleacetamide pathway (tryptophan – indoleacetamide - IAA) to IAA are examined in Pisum sativum (pea) using a compound-based ap

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Tivendale, ND. "The biosynthesis of two naturally-occurring auxins in Pisum sativum L." Thesis, 2012. https://eprints.utas.edu.au/15976/3/whole-tivendale-thesis-2012.pdf.

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Auxins are a group of phytohormones, including indole-3-acetic acid (IAA) and 4-chloroindole-3-acetic acid (4-Cl-IAA), that are involved in many aspects of plant growth, including phototropism, gravitropism, shoot elongation, root initiation and flowering. The structure of the primary auxin—IAA—was determined over 70 years ago, but the biosynthesis of this molecule, and the other naturally-occurring auxins, has remained unclear. Five pathways have been proposed for IAA biosynthesis, one tryptophan (Trp)-independent pathway and four Trp-dependent pathways. Each of the Trp-dependent pathways is

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Book chapters on the topic "IAA biosynthesis"

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Vande Broek, A., A. M. Bekri, F. Dosselaere, et al. "Azospirillum-Plant Root Associations: Genetics of IAA Biosynthesis and Plant Cell Wall Degradation." In Biological Nitrogen Fixation for the 21st Century. Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-5159-7_225.

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Ruckdäschel, E., B. Lewis Kittell, D. R. Helinski, and U. Klingmüller. "Aromatic Amino Acid Aminotransferases of Azospirillum Lipoferum and Their Possible Involvement in IAA Biosynthesis." In Azospirillum IV. Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-642-73072-6_7.

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Ahmad, Ees, Pawan K. Sharma, and Mohd Saghir Khan. "IAA Biosynthesis in Bacteria and Its Role in Plant-Microbe Interaction for Drought Stress Management." In Plant Stress Mitigators. Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-7759-5_12.

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Hertel, Rainer. "A critical view on proposed hormone action: the example of auxin." In Biochemical Mechanisms Involved in Plant Growth Regulation. Oxford University PressOxford, 1994. http://dx.doi.org/10.1093/oso/9780198577645.003.0001.

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Abstract Biological processes have molecular components and, on the other hand, a contextual meaning within larger processes: in this chapter we are interested in the mechanism of auxin action, in the molecular components and their sequential function, and less in the biological context, less in ontogenesis or phylogeny of the system. The biosynthesis and breakdown of indoleacetic acid (IAA) will not be dealt with. This plant growth substance fulfils the criteria of a hormone and shows analogies to animal hormones or transmitters, e.g. it is an amino acid metabolite like serotonin or thyroxine

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Raghupathy, P. "Disorders of Adrenocortical Biosynthesis." In IAP Textbook of Pediatrics. Jaypee Brothers Medical Publishers (P) Ltd., 2013. http://dx.doi.org/10.5005/jp/books/11894_52.

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Eschenmoser, Albert. "Albert Eschenmoser (1925–2023) Autobiography Chapter 4: Professor at ETH—Etiologies and Prebiotics (1973–2008)." In Prizes are Good but Discoveries are Better. GNT Publishing GmbH, 2025. https://doi.org/10.47261/1569-4.

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Around the time when the work on the chemical synthesis of vitamin B₁₂ reached its completion, it was the research on the biosynthesis of vitamin B₁₂ that really took off. The main reason for these advances was the advent of ¹³C-NMR spectroscopy in the early 1970s. Major players were the laboratories of David Shemin and A. Ian Scott in the USA, Alan R. Battersby in the UK, and Duilio Arigoni at ETH. It was already known that uroporphyrinogen III was an intermediate in B₁₂ biosynthesis, as in the case of porphyrins such as heme and chlorophyll, and that methyl groups on the periphery of the cor

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Conference papers on the topic "IAA biosynthesis"

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Levene, Richard B., Francis M. Booyse, Juan Chediak, Therodore S. Zimmerman, David M. Livingston, and Dennis C. Lynch. "ABNORMAL EXPRESSION OF VON WILLEBRAND FACTOR BY ENDOTHELIAL CELLS FROM A PATIENT WITH TYPE IIA VON WILLEBRAND’ S DISEASE." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1642915.

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Studies were conducted to characterize the biosynthesis of von Willebrand factor (vWf) by cultured endothelial cells (EC) derived from the umbilical vein of a patient with type HA von Willebrand’ s disease. The patient’ s EC, compared with those from normal individuals, produced vWf which had decreased amounts of large multimers and an increase in rapidly migrating satellite species, features which are characteristic of plasma vWf from patients with type IIA von Willebrand’ s disease. The typQ IIA EC produced a full spectrum of vWf multimers in both cell lysates and post-culture medium, althou

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Reports on the topic "IAA biosynthesis"

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Cohen, Jerry D., and Ephraim Epstein. Metabolism of Auxins during Fruit Development and Ripening. United States Department of Agriculture, 1995. http://dx.doi.org/10.32747/1995.7573064.bard.

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We had proposed to look at several aspects of auxin metabolism in fruit tissues: 1) IAA biosynthesis from tryptophan and IAA biosynthesis via the non-tryptophan pathway; 2) changes in the capacity to form conjugates and catabolites of auxin at different times during fruit development and; 3) the effects of modifying auxin metabolism in fruit tissues. The latter work focused primarily on the maize iaglu gene, with initial studies also using a bacterial gene for hydrolysis of IAA-aspartate. These metabolic and molecular studies were necessary to define potential benefits of auxin metabolism modi

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Lindow, Steven, Yedidya Gafni, Shulamit Manulis, and Isaac Barash. Role and In situ Regulation of Growth Regulators Produced in Plant-Microbe Interactions by Erwinia herbicola. United States Department of Agriculture, 1992. http://dx.doi.org/10.32747/1992.7561059.bard.

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The main objective of this work was to gain a better understanding of how some strains of Erwinia herbicola have evolved into serious plant pathogens while also commonly existing as epiphytes on the surface of healthy plants. The focus of our studies was to determine the nature of, and regulation, of virulence factors, including the phytohormones IAA and cytokinins, which are encoded on a large plasmid (pPATH) found in gall-forming strains of this species. In addition, the in situ regulation and contribution to epiphytic fitness of a second, chromosomal, IAA biosynthetic locus (ipdC) was deter

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Lindow, Steven, Isaac Barash, and Shulamit Manulis. Relationship of Genes Conferring Epiphytic Fitness and Internal Multiplication in Plants in Erwinia herbicola. United States Department of Agriculture, 2000. http://dx.doi.org/10.32747/2000.7573065.bard.

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Most bacterial plant pathogens colonize the surface of healthy plants as epiphytes before colonizing internally and initiating disease. The epiphytic phase of these pathogens is thus an important aspect of their epidemiology and a stage at which chemical and biological control is aimed. However, little is known of the genes and phenotypes that contribute to the ability of bacteria to grow on leaves and survive the variable physical environment in this habitat. In addition, while genes such as hrp awr and others which confer pathogenicity and in planta growth ability have been described, their

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