Pichia lindnerii sp. n., eine neue Methanol assimilierende Hefe aus Erde

Henninger, Wolfgang; Windisch, S.

doi:10.1007/bf00447111

Cited by 16 publications

(4 citation statements)

References 3 publications

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“…P. aphidis was first isolated from aphid secretions (Henninger and Windisch, 1975) and later identified on plant surfaces as well (Allen et al, 2004). Recently the sequence of P. aphidis isolate DSM70725 that was isolated from aphid secretions was published (Lorenz et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Biological control of the cucurbit powdery mildew pathogen Podosphaera xanthii by means of the epiphytic fungus Pseudozyma aphidis and parasitism as a mode of action

et al. 2015

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Epiphytic yeasts, which colonize plant surfaces, may possess activity that can be harnessed to help plants defend themselves against various pathogens. Due to their unique characteristics, epiphytic yeasts belonging to the genus Pseudozyma hold great potential for use as biocontrol agents. We identified a unique, biologically active isolate of the epiphytic yeast Pseudozyma aphidis that is capable of inhibiting Botrytis cinerea via a dual mode of action, namely induced resistance and antibiosis. Here, we show that strain L12 of P. aphidis can reduce the severity of powdery mildew caused by Podosphaera xanthii on cucumber plants with an efficacy of 75%. Confocal and scanning electron microscopy analyses demonstrated P. aphidis proliferation on infected tissue and its production of long hyphae that parasitize the powdery mildew hyphae and spores as an ectoparasite. We also show that crude extract of P. aphidis metabolites can inhibit P. xanthii spore germination in planta. Our results suggest that in addition to its antibiosis as mode of action, P. aphidis may also act as an ectoparasite on P. xanthii. These results indicate that P. aphidis strain L12 has the potential to control powdery mildew.

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Section: Introductionmentioning

confidence: 99%

Biological control of the cucurbit powdery mildew pathogen Podosphaera xanthii by means of the epiphytic fungus Pseudozyma aphidis and parasitism as a mode of action

et al. 2015

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“…Pseudozyma antarctica and Pseudozyma prolifica) have suggested that those species hold great potential for biocontrol applications and production of novel fatty acids that may be useful for cosmetics and other industries . P. aphidis is a close relative of P. rugulosa (Begerow et al, 2000), which was first isolated from aphid secretions (Henninger and Windisch, 1975), but was later also identified on plant surfaces (Allen et al, 2004). reported that P. aphidis isolated from aphid secretions (isolate CBS 517.83) is not associated with colony collapse of powdery mildew, and that it does not produce unique antifungal fatty acids.…”

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confidence: 99%

The Epiphytic Fungus Pseudozyma aphidis Induces Jasmonic Acid- and Salicylic Acid/Nonexpressor of PR1-Independent Local and Systemic Resistance

et al. 2013

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Pseudozyma spp. are yeast-like fungi, classified in the Ustilaginales, which are mostly epiphytic or saprophytic and are not pathogenic to plants. Several Pseudozyma species have been reported to exhibit biological activity against powdery mildews. However, previous studies have reported that Pseudozyma aphidis, which can colonize plant surfaces, is not associated with the collapse of powdery mildew colonies. In this report, we describe a novel P. aphidis strain and study its interactions with its plant host and the plant pathogen Botrytis cinerea. This isolate was found to secrete extracellular metabolites that inhibit various fungal pathogens in vitro and significantly reduce B. cinerea infection in vivo. Moreover, P. aphidis sensitized Arabidopsis (Arabidopsis thaliana) plants' defense machinery via local and systemic induction of PATHOGENESIS-RELATED1 (PR1) and PLANT DEFENSIN1.2 (PDF1.2) expression. P. aphidis also reduced B. cinerea infection, locally and systemically, in Arabidopsis mutants impaired in jasmonic acid (JA) or salicylic acid (SA) signaling. Thus, in addition to direct inhibition, P. aphidis may inhibit B. cinerea infection via induced resistance in a manner independent of SA, JA, and Nonexpressor of PR1 (NPR1). P. aphidis primed the plant defense machinery and induced stronger activation of PDF1.2 after B. cinerea infection. Finally, P. aphidis fully or partially reconstituted PR1 and PDF1.2 expression in npr1-1 mutant and in plants with the SA hydroxylase NahG transgene, but not in a jasmonate resistant1-1 mutant, after B. cinerea infection, suggesting that P. aphidis can bypass the SA/NPR1, but not JA, pathway to activate PR genes. Thus, either partial gene activation is sufficient to induce resistance, or the resistance is not directed solely through PR1 and PDF1.2 but probably through other pathogen-resistance genes or pathways as well.

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“…media. meyerae, misumiaensis;" mucosa, naganishii, nakasei, ofunaensis;" philodendra," saitoi, sorbitolphila, spartinae and sydowiorum," b (I) Barnett et aI., 1983; (2) this paper, Bridges et aI., 1984;(8) Phaff and Knapp, 1956;(9) Shehata et aI., 1955;(10) Hedrick and Burke, 1950;(II) Kodama, 1974;(12) da Cunha et aI., 1957; (13) Starmer et aI., 1984;(14) Phaff et aI., 1972;(15) Starmer et aI., 1978b; (16) Nakase and Komagata, 1971;(17) Miller el aI., 1960;(18) (19) Billon-Grand, 1981;(20) Starmer et aI., 1982;(21) Price et aI., 1978;(22) Ladder, 1970;(23) Fuson et aI., 1980;(24) Bowles and Lachance, 1983;(25) Lachance et aI., 1982;(26) Phalf et aI., 1978;(27) Kurtzman et aI., 1979;(28) Henninger and Windisch, 1975;(29) Kobayashi, 1953;(30) Lee and Komagata, 1980;(31) Miranda et aI., 1982;(32) Holzschu et aI., 1979;(33) Starmer et aI., 1979;(34) Nakase and Komagata, 1970;(35) Phaff'et aI., 1983;(36) Holzschu et aI., 1983;(37) Santa Maria and Garcia Aser, 1977;(38) Phalfet aI., 1964;…”

Section: Methodsunclassified

QUANTUM AND CONTINUOUS EVOLUTION OF DNA BASE COMPOSITION IN THE YEAST GENUS PICHIA

1986

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This paper investigates the noncontinuous nature and evolution of the base composition of nuclear DNA (expressed as mol% guanine + cytosine) in species of the yeast genus Pichia (sensu Kurtzman, 1984b). The pattern of change in the G + C contents in species of this genus, which range from about 27 to 52 mol%, was evaluated. When specifically those species of Pichia were analyzed that have evolved in necroses of cactus species and associated Drosophila, a periodic change in the G + C contents of approximately 3.0-3.2 mol% was detected by a "bootstrapping" method, Fourier analysis, and a nonlinear trigonometric model. Pichia species occurring in exudates of broad-leaved deciduous trees or associated Drosophila and substrates such as soil and water ("other") showed a periodicity of 2.5-2.6 mol%, whereas species associated with conifers and associated bark beetles showed no significant periodicity. Periodicity in the most recent association (cactus and resident Drosophila) as compared to the lack of periodicity in the oldest association (conifer-beetle) may indicate mixed evolutionary processes. Low mol% G + C values appear more frequently in the relatively recent cactus and Drosophila-associated yeast species. In addition, low mol% G + C species do not display the ancestral bud-meiosis mode of sexual reproduction which occurs frequently in medium to high mol% G + C yeasts. It was found that the mol% G + C content of the Drosophila- and cactus-associated Pichia species is positively correlated with the number of compounds fermented or respired by these yeast species. Possible reasons for the periodic changes in mol% G + C content accompanying speciation include aneuploidy, allopolyploidy, the presence of nuclear plasmids, and regular differences in moderately repetitive portions of DNA. Since significant DNA complementarity is virtually limited to species within a relatively narrow G + C group, this suggests that there are at least two processes which alter the G + C content between species, one saltational and one continuous.

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Pichia lindnerii sp. n., eine neue Methanol assimilierende Hefe aus Erde

Abstract: A new undescribed species of yeast could be detected in forest soils in the area of Berlin, Germany. A description of the new homothallic species including latin diagnosis is given.

Cited by 16 publications

References 3 publications

Biological control of the cucurbit powdery mildew pathogen Podosphaera xanthii by means of the epiphytic fungus Pseudozyma aphidis and parasitism as a mode of action

Biological control of the cucurbit powdery mildew pathogen Podosphaera xanthii by means of the epiphytic fungus Pseudozyma aphidis and parasitism as a mode of action

The Epiphytic Fungus Pseudozyma aphidis Induces Jasmonic Acid- and Salicylic Acid/Nonexpressor of PR1-Independent Local and Systemic Resistance

QUANTUM AND CONTINUOUS EVOLUTION OF DNA BASE COMPOSITION IN THE YEAST GENUS PICHIA

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