Growth of indoor fungi on gypsum

Segers, Frank J. J.; Laarhoven, Karel van; Wösten, Han A. B.; Dijksterhuis, Jan

doi:10.1111/jam.13487

Cited by 19 publications

(14 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Under these conditions this fungus exhibits a very condensed growth pattern existing by the formation of rounded, pigmented cells in the central colony, the occurrence of bundles of hyphae and very quick spore formation. Cladosporium halotolerans and P. rubens were able to grow on phosphogypsum without added nutrients ( Segers et al. 2017 ).…”

Section: Discussionmentioning

confidence: 99%

Cladosporium species in indoor environments

Bensch

Groenewald

Meijer

et al. 2018

Studies in Mycology

Self Cite

150

127

View full text Add to dashboard Cite

As part of a worldwide survey of the indoor mycobiota about 520 new Cladosporium isolates from indoor environments mainly collected in China, Europe, New Zealand, North America and South Africa were investigated by using a polyphasic approach to determine their species identity. All Cladosporium species occurring in indoor environments are fully described and illustrated. Fourty-six Cladosporium species are treated of which 16 species are introduced as new. A key for the most common Cladosporium species isolated from indoor environments is provided. Cladosporium halotolerans proved to be the most frequently isolated Cladosporium species indoors.

show abstract

Section: Discussionmentioning

confidence: 99%

Cladosporium species in indoor environments

Bensch

Groenewald

Meijer

et al. 2018

Studies in Mycology

Self Cite

150

127

View full text Add to dashboard Cite

show abstract

“…This period of isotropic growth is followed by polarized growth resulting in the production of a germ tube that grows out into a hypha. Conidia of Cladosporium halotolerans and Penicillium rubens germinate in pure water (Segers et al 2017), while most other conidia, including those of Aspergillus niger (Ijadpanahsaravi et al 2021) require certain nutrients. Until now, the nutrient requirements of P. roqueforti conidia are not known.…”

Section: Introductionmentioning

confidence: 99%

Penicillium roqueforti conidia induced by L-amino acids can germinate without detectable swelling

Punt

Teertstra

Wösten

2021

Antonie van Leeuwenhoek

View full text Add to dashboard Cite

Penicillium roqueforti is used for the production of blue-veined cheeses but is a spoilage fungus as well. It reproduces asexually by forming conidia. Germination of these spores can start the spoilage process of food. Germination is typically characterized by the processes of activation, swelling and germ tube formation. Here, we studied nutrient requirements for germination of P. roqueforti conidia. To this end, [ 300 conidia per condition were monitored in time using an oCelloScope imager and an asymmetric model was used to describe the germination process. Spores were incubated for 72 h in NaNO 3 , Na 2 HPO 4 /NaH 2 PO 4 , MgSO 4 and KCl with 10 mM glucose or 10 mM of 1 out of the 20 proteogenic amino acids. In the case of glucose, the maximum number of spores (P max ) that had formed germ tubes was 12.7%, while time needed to reach 0.5 P max (s) was about 14 h. Arginine and alanine were the most inducing amino acids with a P max of germ tube formation of 21% and 13%, respectively, and a s of up to 33.5 h. Contrary to the typical stages of germination of fungal conidia, data show that P. roqueforti conidia can start forming germ tubes without a detectable swelling stage.

show abstract

“…This increase could be either caused by measuring errors or it indicates that cell production has occurred. Fungal cell division or sporulation in media, where carbon-based nutrients appear to be absent, has been mentioned in other studies (Parkinson, Wainwright, & Killham, 1989;Segers, Laarhoven, Wösten, & Dijksterhuis, 2017;Wainwright, 2005). However, it should be noted that it is unknown and, with respect to the general requirements for fungal growth, unlikely that cell production in media without carbon-based nutrients is related to an increase in biomass of the fungal population.…”

Section: Effect Of Different Concentrations Of Oil On Fungal Growthmentioning

confidence: 71%

Vegetable oils as carbon and energy source for Aureobasidium melanogenum in batch cultivation

et al. 2018

View full text Add to dashboard Cite

Dark homogenous fungal‐based layers called biofinishes and vegetable oils are key ingredients of an innovative wood protecting system. The aim of this study was to determine which of the vegetable oils that have been used to generate biofinishes on wood will provide carbon and energy for the biofinish‐inhabiting fungus Aureobasidium melanogenum , and to determine the effect of the oil type and the amount of oil on the cell yield. Aureobasidium melanogenum was cultivated in shake flasks with different types and amounts of carbon‐based nutrients. Oil‐related total cell and colony‐forming unit growth were demonstrated in suspensions with initially 1% raw linseed, stand linseed, and olive oil. Oil‐related cell growth was also demonstrated with raw linseed oil, using an initial amount of 0.02% and an oil addition during cultivation. Nile red staining showed the accumulation of fatty acids inside cells grown in the presence of oil. In conclusion, each tested vegetable oil was used as carbon and energy source by A. melanogenum . The results indicated that stand linseed oil provides less carbon and energy than olive and raw linseed oil. This research is a fundamental step in unraveling the effects of vegetable oils on biofinish formation.

show abstract

Growth of indoor fungi on gypsum

Abstract: Indoor fungal growth is a potential threat to human health and causes damage to building materials. This study possibly helps in the application of the right type of gypsum in buildings.

Cited by 19 publications

References 29 publications

Cladosporium species in indoor environments

Cladosporium species in indoor environments

Penicillium roqueforti conidia induced by L-amino acids can germinate without detectable swelling

Vegetable oils as carbon and energy source for Aureobasidium melanogenum in batch cultivation

Contact Info

Product

Resources

About