Nutritional control of dimorphism inCeratocystis ulmi

Kulkarni, Rajiv K.; Nickerson, Kenneth W.

doi:10.1016/0147-5975(81)90015-3

Cited by 90 publications

(83 citation statements)

References 24 publications

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“…In Ophiostoma ulmi, the causal agent of Dutch elm disease, the mycelial form is required to penetrate adjacent xylem vessels. In contrast, the conidia/ yeast form (conidia bud in a yeast-like fashion) is used to translocate within the individual xylem vessels via the host transpiration stream (Kulkarni and Nickerson 1981). Production of conidia or yeast-like blastoconidia in planta by Verticillium species is also implicated in the rapid dissemination of the pathogen within the host vascular tissue in diverse plant species (Schnathorst 1981;Pegg and Brady 2002).…”

Section: Morphotype Niche Adaptation and Fungal Virulencementioning

confidence: 99%

Fungal Morphogenesis

Lin

Alspaugh

Liu

et al. 2014

Cold Spring Harbor Perspectives in Medicine

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Morphogenesis in fungi is often induced by extracellular factors and executed by fungal genetic factors. Cell surface changes and alterations of the microenvironment often accompany morphogenetic changes in fungi. In this review, we will first discuss the general traits of yeast and hyphal morphotypes and how morphogenesis affects development and adaptation by fungi to their native niches, including host niches. Then we will focus on the molecular machinery responsible for the two most fundamental growth forms, yeast and hyphae. Last, we will describe how fungi incorporate exogenous environmental and host signals together with genetic factors to determine their morphotype and how morphogenesis, in turn, shapes the fungal microenvironment. PROPERTIES OF MORPHOGENESIS IN FUNGAL CELLS

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Section: Morphotype Niche Adaptation and Fungal Virulencementioning

confidence: 99%

Fungal Morphogenesis

Lin

Alspaugh

Liu

et al. 2014

Cold Spring Harbor Perspectives in Medicine

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“…Indeed, the effect of inoculum size has been widely described for other species (Kulkarni and Nickerson, 1981;Nickerson et al, 1982;Muthukamar and Nickerson, 1984;Muthukamar et al, 1985;Jensen et al, 1992;Hornby et al, 2004;Nickerson et al, 2006). These studies found that dimorphism of the fungi O. ulmi (Ceratocystis ulmi), Candida albicans, Histoplasma capsulatum and Mucor rouxii, was dependent on inoculum size (Kulkarni, 1981).…”

Section: Discusionmentioning

confidence: 98%

Effect of growth conditions on Ophiostoma piceae (Münch) H. & P. Syd. and Ophiostoma floccosum Math-Käärik albino strains culture morphology

Berrocal-Jiménez

Navarrete

Oviedo

2014

RFMK

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Blue stain in Pinus radiata D. Don wood is predominantly caused by Ophiostoma genus fungi. Stained wood causes significant economic losses to forestry and timber industries. Currently, different chemical fungicides are used to prevent the occurrence of blue stain fungi. However, recent reports have questioned the environmental friendliness of these fungicides. For this reason, the use of biological control, in particular with albino strains of the Ophiostoma genus, appears to be an environmentally safe and a technically feasible alternative to work with. The potential field application of this technology would use a formulation containing the albino fungus-the bioactive ingredient- in its yeast like form. However, some Ophiostoma strains cultures present a marked filamentous morphology in liquid culture medium, affecting the efficiency in the production of the bioactive ingredient. The hypothesis of this work presumed the possibility to control the morphology of Ophiostoma cultures, through the modification of growth conditions in liquid medium. The effect of inoculum size, growth temperature and agitation rate on the morphology of PcF2A29 Ophiostoma piceae and FlF1A55 Ophiostoma floccosum albino strains in liquid culture medium, was studied. A 23 factorial design was employed. The results showed that the initial inoculum size had a statistically significant effect on yeast-like growth morphology in both strains, whereas the temperature only produced a significant effect in PcF2A29 O. piceae strain.

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“…ulmi), Hornby et al (2004) concluded that the effect of inoculum size, initially reported by Kulkarni and Nickerson (1981), was mediated by a quorum sensing molecule (QSM) that induced a change in the morphology of the fungus. This compound was lipophilic (Hornby et al 2004).…”

Section: Introductionmentioning

confidence: 99%

“…Some studies on the growth morphology of Ceratocystis (Ophiostoma) ulmi and Candida albicans in liquid culture media, found that their morphology was influenced by the cell density (Kulkarni and Nickerson 1981;Hornby et al 2001Hornby et al , 2004Berrocal et al 2012b). …”

Section: Introductionmentioning

confidence: 99%