202, 060021 Bucharest, Romania;  
1 [EMAIL_ADDRESS] (I-A.B. ); [EMAIL_ADDRESS] (N.T. ); [EMAIL_ADDRESS] (B.T.) 2  
[PERSON]  
1 Bioresources Department, National Institute for Research & Development in Chemistry and Petrochemistry--ICECHIM, Splaiul Independentenii nr. 202, 060021 Bucharest, Romania;  
1 [EMAIL_ADDRESS] (I-A.B. ); [EMAIL_ADDRESS] (N.T. ); [EMAIL_ADDRESS] (B.T.) 2  
[PERSON]  
1 Bioresources Department, National Institute for Research & Development in Chemistry and Petrochemistry--ICECHIM, Splaiul Independentenii nr. 202, 060021 Bucharest, Romania;  
1 [EMAIL_ADDRESS] (I-A.B. ); [EMAIL_ADDRESS] (N.T. ); [EMAIL_ADDRESS] (B.T.) 2  
[PERSON]  
1 Bioresources Department, National Institute for Research & Development in Chemistry and Petrochemistry--ICECHIM, Splaiul Independentenii nr. 202, 060021 Bucharest, Romania;  
1 [EMAIL_ADDRESS] (I-A.B. ); [EMAIL_ADDRESS] (N.T. ); [EMAIL_ADDRESS] (B.T.) 2  
[PERSON]  
1 Bioresources Department, National Institute for Research & Development in Chemistry and Petrochemistry--ICECHIM, Splaiul Independentenii nr. 202, 060021 Bucharest, Romania;
conditions that inhibit growth [2; 3]. Previous studies showed that light regulates the growth of _Trichoderma atroviride_ and _Trichoderma reseei_ via its photoreceptors, the most studied being blue-light regulators 1 and 2 (BLR-1 and BLR-2), and the growth of other fungal species via a conserved pathway [4; 5; 6]. Light influences the carbon metabolism of _Trichoderma_ as well [4; 6]. Cross-talk between signal transduction pathways induced by light and nutrients/carbon metabolism was previously reported [7; 8]. _Trichoderma_ is one of the most studied filamentous fungal species with respect to light effects, due to its biotechnological and agronomic importance [6; 9; 10; 11; 12; 13; 14; 15; 16]. _Trichoderma_ is of the most interest due to its high capacity to degrade biomass, especially lignocellulosic; high production of relevant enzymes and bioactive compounds including those used for producing biofuels or for use in the pharmaceutical industry; and reduced pathogenicity and high efficiency as a biocontrol agent and plant biostimulant [17; 18; 19; 20]. _T. reseei, T. harzianum_, and _T. atroviride_ are some of the most studied species due to their high bioactivity, in terms of enzymatic machinery and/or impact on plants. Valorization of co- and sub-products from different industries, such as rice husks, has gained more and more interest for a sustainable bioeconomy [21; 22; 23]. Some of the most important enzymes for biomass degradation are the carbohydrate active enzyme (CAZyme) family of proteins and the proteases [24]. In some cases, very high levels of proteases are not desired as they could determine degradation of other enzymes of interest, such as cellulases [24; 25]. The most investigated CAZ enzymes with respect to light effect, i.e., cellulases, have been shown to be regulated by light [25]. The effects of light on protease synthesis and activity have been less studied than the effects on cellulases. To the best of our knowledge, only Dr. [PERSON]'s group reported on the effects induced by light with respect to protease activity of a Trichoderma strain, with the study showing a stimulation of the activity under light conditions [25]. In agriculture, _Trichoderma_ is used as a biocontrol agent and as a microbial biostimulant [26]. For these applications, formulations of spores that could be applied either radicularly [27] or foliary [28; 29] are the most efficient. Therefore, efficient induction of _Trichoderma_ sporulation in cultures is economically relevant. _Trichoderma_ produces two main types of spores, conidia and chlamdsopores, the latter being larger, with a thicker cell wall, and more resistant to adverse conditions than conidia. Light has been shown to amplify conidia formation, but not much is known about the effects on chlamdsopores. Hydrophobin proteins, which are involved in sporulation, have been detected in the medium of light-grown _T. reseei_[25].