Related Experiment Video
Updated: Jun 13, 2026
07:21
Viability Assay of Trichoderma stromaticum Conidia Inside Human Peripheral Blood Mononuclear-Derived Macrophages
Published on: October 20, 2023
Trichoderma in the light of day--physiology and development
Monika Schmoll1, Edgardo Ulises Esquivel-Naranjo, Alfredo Herrera-Estrella
1Research Area Gene Technology and Applied Biochemistry, Institute of Chemical Engineering, Vienna University of Technology, Getreidemarkt 9/166-5, 1060 Vienna, Austria.
Fungal Genetics and Biology : FG & B
|May 15, 2010
Summary
Trichoderma fungi exhibit complex light responses mediated by BLR1 and BLR2 photoreceptors, impacting growth and metabolism. This light signaling machinery integrates environmental cues for adaptive responses.
Area of Science:
- Mycology
- Molecular Biology
- Photobiology
Background:
- Light significantly influences fungal development and physiology.
- Early research focused on cAMP signaling in Trichoderma photoresponses.
- Recent advancements reveal a broader understanding of light-mediated mechanisms.
Purpose of the Study:
- To elucidate the molecular mechanisms of photoresponses in Trichoderma species.
- To detail the roles of key photoreceptors and regulatory proteins.
- To understand how light signaling integrates with other metabolic pathways.
Main Methods:
- Review of existing literature on Trichoderma photoresponses.
- Analysis of molecular signaling pathways involved in light perception.
- Identification of photoreceptor genes (BLR1, BLR2) and regulatory proteins (ENVOY).
Main Results:
- BLR1 and BLR2 are identified as key photoreceptors mediating most light responses.
- ENVOY protein links light perception to nutrient signaling pathways.
- Light signaling influences vegetative growth, reproduction, metabolism, and stress responses.
Conclusions:
- Trichoderma utilizes a sophisticated light signaling network involving BLR1, BLR2, and ENVOY.
- This network regulates diverse downstream pathways, ensuring adaptation to environmental conditions.
- Integrated signaling cascades, including G-protein and MAP-kinase pathways, are crucial for fungal responses.
Related Concept Videos
02:00Photoreceptors and Plant Responses to Light
Light plays a significant role in regulating the growth and development of plants. In addition to providing energy for photosynthesis, light provides other important cues to regulate a range of developmental and physiological responses in plants.
02:45Biological Clocks and Seasonal Responses
The circadian—or biological—clock is an intrinsic, timekeeping, molecular mechanism that allows plants to coordinate physiological activities over 24-hour cycles called circadian rhythms. Photoperiodism is a collective term for the biological responses of plants to variations in the relative lengths of dark and light periods. The period of light-exposure is called the photoperiod.
01:29Fungal Group Zygomycota
Zygomycota, previously classified as a distinct fungal group, are primarily terrestrial, saprophytic molds that play a crucial role as decomposers. Recent phylogenetic studies have revealed that these fungi are now divided into two major clades — Mucoromycota, which includes many symbiotic species, and Zoopagomycota, which primarily consists of parasitic and pathogenic fungi. These groups exhibit distinct ecological roles and reproductive strategies while sharing key structural and...
01:27Factors Influencing Microbial Growth: Temperature
Microorganisms display remarkable adaptations, enabling them to thrive in diverse ecological niches across a wide range of temperatures. Temperature profoundly influences microbial growth by affecting enzymatic activity, membrane fluidity, and other cellular processes.Each microorganism operates within a specific temperature range defined by three cardinal points: minimum, optimum, and maximum. Below the minimum temperature, membranes lose fluidity, halting transport processes. Above the...
01:28Fungal Phylum Microsporidia
Microsporidia are a group of obligate intracellular fungi that were initially classified as protists but were later reclassified based on phylogenetic, molecular, and structural evidence linking them to the Chytridiomycota. These unicellular, non-motile organisms are highly specialized parasites that infect a wide range of animal hosts, including humans. They have evolved extensive genomic and metabolic reductions, making them highly dependent on their hosts for survival.Morphology and Genomic...
01:17Gene Regulation During Sporulation
Sporulation is a complex developmental process that allows certain Gram-positive bacteria, such as Bacillus subtilis and Clostridium species, to survive extreme environmental conditions. This process is tightly regulated by a series of signaling cascades and transcriptional controls, ensuring the formation of a highly resistant endospore.Sporulation is triggered by unfavorable conditions, such as nutrient depletion, and is governed by a phosphorelay system. One of the sensor kinases, such as...