ArticleApplied microbiology and biotechnology2021
Hyphal growth of Penicillium rubens in changing relative humidity.
Article in Applied microbiology and biotechnology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
3 citing papers in PubMed.
- Filamentous Fungi and the Biodeterioration of Organic Cultural Heritage Materials: A Systematic Review of Mechanisms, Risks, and Preventive Conservation Strategies.Microorganisms · 2026Review
- Morphology ofLife (Basel, Switzerland) · 2023Article
- Ecological Factors Influencing the Occurrence of Macrofungi from Eastern Mountainous Areas to the Central Plains of Jilin Province, China.Journal of fungi (Basel, Switzerland) · 2022Article
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Authors and funding
3 authors.
Funding
Abstract
When considering mold prevention strategies, the environmental conditions in which fungi grow need to be taken into consideration. This environment is often characterized by a time-dependent relative humidity, and porous substrate. Growth has mainly been investigated in steady-state experiments. Therefore, the goal of this study is to understand the hyphal growth of Penicillium rubens on porous gypsum, under dynamic humidity conditions. Spores of P. rubens were inoculated on porous gypsum containing nutrients, and placed in a small incubation chamber, allowing for microscopic hyphal observation. The relative humidity in this chamber varied multiple times between a high (close to 100%) and low value (35%, 55%, or 75%). The hyphae reacted to a lowered relative humidity by an immediate growth stop and dehydration. When the relative humidity was increased again, the hyphae re-hydrated and three responses were found: regrowing after approximately 4 h, after a time equal to the germination time, or no regrowth at all. No substantial regrowth was found for fluctuations faster than 4 h. This time-scale was found for multiple decreases in relative humidity, and has been reported for the first time. KEY POINTS: • Hyphae restart growth after a characteristic time of approximately 4 h. • Relative humidity fluctuations of 3 h can suppress hyphal growth. • Hyphae do not regrow after a severe desiccation and short periods of high humidity.
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