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Thursday, May 7, 2020 | History

2 edition of Cytokinin production by species of the fungus Taphrina found in the catalog.

Cytokinin production by species of the fungus Taphrina

James Clelland Johnston

Cytokinin production by species of the fungus Taphrina

by James Clelland Johnston

  • 285 Want to read
  • 35 Currently reading

Published .
Written in English

    Subjects:
  • Cytokinesis.

  • Edition Notes

    Statementby James Clelland Johnston.
    The Physical Object
    Pagination[9], 75 leaves, bound :
    Number of Pages75
    ID Numbers
    Open LibraryOL14239557M

    Effect of cytokinin on soil fungi 39 Mycopath (), 4(1): of experiment. At the same time these treatments were found to be statistically significant in comparison to 45 mgL-1 (Fig. 2). Biomass productivity assays of Aspergillus niger Fresh biomass production by A. niger revealed a rather erratic pattern of growth. Cytokinin production by filamentous fungi has been reported previously (Murphy et al., , López-Carbonell, Moret & Nadal, , Morrison et al., , Chanclud & Morel, ). The concentration of cytokinins increased in plant tissues infected with fungal plant pathogens (López-Carbonell, Moret & Nadal, ; Angra-Sharma & Sharma, ).

    The simplest mechanism operates in pathogens like species of Taphrina that belong to the basal lineage of the Ascomycota called the Taphrinomycotina. For example, in Taphrina deformans, which causes peach leaf curl, the ascus is exposed on the infected leaf surface, splits open at its tip, and expels a cloud of infectious by: 6.   Several fungi including six species of the genus Rhizopogon, 22 species of Hebeloma and one of Agaricus have been screened for production of cytokinins. The screening was done by culturing cytokinin-requiring soybean callus tissue alongside the fungus on a medium lacking a cytokinin supply. Growth of the soybean callus indicated production of cytokinins by the by:

      The review provides information on the mechanisms underlying the development of spontaneous and pathogen-induced tumors in higher plants. The activation of meristem-specific regulators in plant tumors of various origins suggests the meristem-like nature of abnormal plant hyperplasia. Plant tumor formation has more than a century of research history. The study of this Author: Irina E. Dodueva, Maria A. Lebedeva, Kseniya A. Kuznetsova, Maria S. Gancheva, Svetlana S. Paponova. Johnston JC, Trione EJ () Cytokinin production by the fungi Taphrina cerani and Taphrina deformans. Can J Bot – Google Scholar Jones DF, Cited by: 7.


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Cytokinin production by species of the fungus Taphrina by James Clelland Johnston Download PDF EPUB FB2

Insoluble polyvinylpyrrolidone was effective in the partial purification of cytokinin-like substances in extracts of the fungal liquid culture medium. Cytokinins or cytokinins in combination with auxin applied to healthy peach leaves did not mimic the disease symptoms.

Attempts to induce mycelial growth of species of Taphrina were : James Clelland Johnston. Cytokinin production by the fungi Taphrina cerasi and T.

deformans Article in Canadian Journal of Botany 52(7) January with 67 Reads How we measure 'reads'. Cytokinins were released into chemically defined liquid media by cultures of Taphrina cerasi and T. deformans. The presence of the cell-division factors was demonstrated with the soybean callus tis Cited by: Cytokinin production by species of the fungus Taphrina.

Abstract. Graduation date: Chemically defined liquid media were devised which supported\ud excellent growth of Taphrina cerasi and T. deformans. When grown\ud in fermentation culture vessels, T. cerasi and T. deformans released\ud cytokinins into the liquid media. Preliminary survey of cytokinin production The fungus under test was inoculated into the centre of a ml Erlenmeyer flask containing cytokinin-free medium (basal medium) and six pieces of soybean callus tissue (approximately 10 mg per piece) were placed around it (Miller, ).Cited by: Taphrina fungi are biotrophic plant pathogens that cause plant deformity diseases.

We sequenced the genomes of four Taphrina species—Taphrina wiesneri, T. deformans, T. flavorubra, and T. populina—which parasitize Prunus, Cerasus, and Populus hosts Cited by:   Cytokinin also may be responsible for the deformation symptoms, and cytokinins production by Taphrina species has been reported (Johnston and Trione ; Sziraki et al.

).Cited by: Taphrina entomospora is one of the few species of the genus described on native plants of the Southern Hemisphere and also one of the few leaf pathogens known on Nothofagus species. The anatomical changes it produces on N.

pumilio leaves, and its morphology, cytology, and sporogenesis were studied. The fungus is a perennial species that overwinters as mycelium in the foliar buds and infects Cited by: 6.

There is good evidence that bacteria and fungi produce cytokinins. A number of microorganisms excrete cytokinin-active nucleosides and free bases into culture media. Cytokinin-active nucleosides have also been found in the tRNA of all the bacteria and fungi examined so far.

The production of zeatin and its derivatives by microorganisms seems to be limited to those which cause Cited by: liquid culture by Schizophyllum commune - Czech Mycol. The superficial cultivation of fungus Schizophyllum commune Fr.

in static liquid cultures showed production of abscisic acid - type inhibitor (ABA) and isopentyl - adenine type cytokinins (2iP) by this fungus. The analyses were done after 28 days of cultivation. Taphrina deformans infects species of the genus Prunus (including P. amygdalus and P.

persica). It is best known as the causative agent of peach leaf curl in peaches and nectarines. It has been observed that this fungus also infects the fruits of some South American trees like Ocotea puberula, Nectandra megapotamica and other Lauraceae : Taphrinaceae. Among ascomycetes, cultures of dimorphic plant pathogens from Taphrinomycotina of the genus Taphrina were characterized by an increased production of zeatin synthesis ().

Taphrina cerasi and Taphrina deformans were reported to synthesize cytokinins in the amount of five and eight μg/g of dry weight in the equivalent of kinetin, respectively (Johnston, ).Cited by: 2. CYTOKININ PRODUCTION BY SPECIES OF THE FUNGUS TAPHRINA INTRODUCTION One consequence of infection by many plant pathogenic micro-organisms is the development of morphological disturbances in the host, such as the production of tumors, excessive stem elongation or abnormal branching (Sequeira, ; Brian, ).

The pathological. Phenotypic and genotypic identification and phylogenetic characterisation of Taphrina fungi on alder Article (PDF Available) in Mycological Progress 2(3) August with Reads. Taphrina caerulescens is a species of fungus in the family Taphrinaceae.

It is a pathogenic Ascomycete fungus that causes oak leaf blister disease on various species of oak trees (Quercus spp.). The associated anamorph species is Lalaria coccinea, described in This disease causes lesions and blisters on Oak : Taphrinaceae.

Extraction of cytokinins from maize, is correlated with increased cytokinin activity which is probably brought about by the synthesis of cytokinins by the fungus and their accumulation in the host tissues.

Following infestation, polar and less polar cytokinins accumulated in the host plants and this was associated with gall formation and Cited by: Abstract. Several fungi including six species of the genus Rhizopogon, 22 species of Hebeloma and one of Agaricus have been screened for production of cytokinins.

The screening was done by culturing cytokinin-requiring soybean callus tissue alongside the fungus on a medium lacking a cytokinin by: Cytokinin Production by the Rice Blast Fungus Is a Pivotal Requirement for Full Virulence Emilie Chanclud, 1 Anna Kisiala, 2, 3 Neil R.

J Emery, 2 Véronique Chalvon, 4 Aurélie Ducasse, 4 Corinne Romiti-Michel, 4 Antoine Gravot, 5 Thomas Kroj, 4 and Jean-Benoit Morel 4, *Cited by: The ascomycetous fungus Taphrina wiesneri, the pathogen of cherry witches` broom, is highly pathogenic to Prunus yedoensis, the most widely planted cherry trees in.

Johnston JC, Trione EJ () Cytokinin production by the fungi Taphrina cerasi and Taphrina deformans. Can J Bot – CrossRef Google Scholar Joost RE () Acremonium in fescue and ryegrass: boon or bane: a by:.

Neoplastic tissues of curled peach leaves by Taphrina deformans exhibit increased cytokinin activity and contain increased levels of indoleacetic acid and tryptophan compared with healthy leaf tissues. Three, chromatographically similar, cytokinins are present both in healthy and infected leaves, but those in infected leaves are more active in the soybean callus by: Yeasts producing zeatin Rostislav A.

Streletskii1,*, cytokinins (Laten & Zahareas-Doktor, ). Cytokinin production by filamentous fungi has been reported previously (Murphy et al.,López-Carbonell, Moret & Nadal,Taphrina (potential new species, strain KBP Y) the highest production of the Cited by: 2.Cytokinin-active nucleosides have also been found in the tRNA of all the bacteria and fungi examined so far.

The production of zeatin and its derivatives by microorganisms seems to be limited to.