Crucial factors of the light perception machinery and their impact on growth and cellulase gene transcription in Trichoderma reesei

Castellanos, Francisco J.; Schmoll, Monika; Martı́nez, Pedro; Tisch, Doris; Kubicek, Christian P.; Herrera-Estrella, Alfredo; Esquivel-Naranjo, Edgardo Ulises

doi:10.1016/j.fgb.2010.02.001

Cited by 106 publications

(193 citation statements)

References 44 publications

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“…In darkness, the corresponding gene (env1) is transcribed at a very low level, but upon illumination the abundance of its transcript increases up to 500-fold. This response requires the BLR-1/BLR-2 photoreceptor complex in both T. reesei and T. atroviride (Castellanos et al, 2010; E. U. Esquivel-Naranjo and others, unpublished results). In agreement with its putative role in a negative feedback loop, as has been demonstrated for VIVID in Neurospora (Malzahn et al, 2010;Chen et al, 2010), mutants in env1 in T. atroviride produce significantly more conidia under constant exposure to light and a blue light pulse (our unpublished data).…”

Section: Envoy a Tiny But Nonetheless Important Blue Light Photorecementioning

confidence: 82%

“…The orthologues of wc-1 and wc-2 in Trichoderma have been identified (blr-1 and blr-2), and they are essential for photoconidiation in T. atroviride and T. reesei (CasasFlores et al, 2004;Castellanos et al, 2010). Consistent with the action spectra of photoconidiation, BLR-1 contains a PAS/LOV (Per-ARNT-Sim/light, oxygen and voltage) domain, which presumably binds FAD.…”

Section: Active Participants In Regulation Of Conidiationmentioning

confidence: 99%

“…Consistent with the action spectra of photoconidiation, BLR-1 contains a PAS/LOV (Per-ARNT-Sim/light, oxygen and voltage) domain, which presumably binds FAD. Based on the structure of the BLR proteins, and the phenotype observed in blr-1 and blr-2 mutants (Casas-Flores et al, 2004;Castellanos et al, 2010), it has been postulated that BLR-1 acts as the photoreceptor, in association with BLR-2.…”

Section: Active Participants In Regulation Of Conidiationmentioning

confidence: 99%

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Trichoderma: sensing the environment for survival and dispersal

2012

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Section: Envoy a Tiny But Nonetheless Important Blue Light Photorecementioning

confidence: 82%

Section: Active Participants In Regulation Of Conidiationmentioning

confidence: 99%

Section: Active Participants In Regulation Of Conidiationmentioning

confidence: 99%

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Trichoderma: sensing the environment for survival and dispersal

2012

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“…Blue-light-induced conidiation in T. atroviride is mediated by the Blue Light Regulators BLR-1 and BLR-2 (Casas- Flores et al, 2004;Castellanos et al, 2010). blr-1 and blr-2 are orthologous to the well-characterized zinc finger transcription factors wc-1 and wc-2.…”

Section: Blr-1 and Blr-2mentioning

confidence: 99%

“…Refractory periods between which light doses are effective have also been demonstrated in T. atroviride (Deitzer et al, 1988;Gressel & Galun, 1967). An orthologue of VIVID, designated ENVOY, has been found in Hypocrea jecorina (anamorph Trichoderma reesei) and shown to regulate photoadaptation of BLR-1/BLR-2-regulated, blue-light-inducible genes (Castellanos et al, 2010;Schmoll et al, 2005Schmoll et al, , 2010Schuster et al, 2007).…”

Section: Blr-1 and Blr-2mentioning

confidence: 99%

Reproduction without sex: conidiation in the filamentous fungus Trichoderma

et al. 2010

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2Lincoln Ventures Limited, PO Box 133, Lincoln University, Lincoln 7647, New Zealand Trichoderma spp. have served as models for asexual reproduction in filamentous fungi for over 50 years. Physical stimuli, such as light exposure and mechanical injury to the mycelium, trigger conidiation; however, conidiogenesis itself is a holistic response determined by the cell's metabolic state, as influenced by the environment and endogenous biological rhythms. Key environmental parameters are the carbon and nitrogen status and the C : N ratio, the ambient pH and the level of calcium ions. Recent advances in our understanding of the molecular biology of this fungus have revealed a conserved mechanism of environmental perception through the White Collar orthologues BLR-1 and BLR-2. Also implicated in the molecular regulation are the PacC pathways and the conidial regulator VELVET. Signal transduction cascades which link environmental signals to physiological outputs have also been revealed.

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The bZIP transcription factor ATF1 regulates blue light and oxidative stress responses in Trichoderma guizhouense

Li,

et al. 2023

mLife

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In several filamentous fungi, incident light and environmental stress signaling share the mitogen‐activated protein kinase (MAPK) HOG (SAK) pathway. It has been revealed that short‐term illumination with blue light triggers the activation of the HOG pathway in Trichoderma spp. In this study, we demonstrate the crucial role of the basic leucine zipper transcription factor ATF1 in blue light responses and signaling downstream of the MAPK HOG1 in Trichoderma guizhouense. The lack of ATF1 severely impaired photoconidiation and delayed vegetative growth and conidial germination. Upon blue light or H2O2 stimuli, HOG1 interacted with ATF1 in the nucleus. Genome‐wide transcriptome analyses revealed that 61.8% (509 out of 824) and 85.2% (702 out of 824) of blue light‐regulated genes depended on ATF1 and HOG1, respectively, of which 58.4% (481 out of 824) were regulated by both of them. Our results also show that blue light promoted conidial germination and HOG1 and ATF1 played opposite roles in controlling conidial germination in the dark. Additionally, the lack of ATF1 led to reduced oxidative stress resistance, probably because of the downregulation of catalase‐encoding genes. Overall, our results demonstrate that ATF1 is the downstream component of HOG1 and is responsible for blue light responses, conidial germination, vegetative growth, and oxidative stress resistance in T. guizhouense.

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Crucial factors of the light perception machinery and their impact on growth and cellulase gene transcription in Trichoderma reesei

Cited by 106 publications

References 44 publications

Trichoderma: sensing the environment for survival and dispersal

Trichoderma: sensing the environment for survival and dispersal

Reproduction without sex: conidiation in the filamentous fungus Trichoderma

The bZIP transcription factor ATF1 regulates blue light and oxidative stress responses in Trichoderma guizhouense

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