The influence of light regulation on fungal growth and enzyme production was tested on endophytic isolates of Fusarium proliferatum (CCH), Colletotrichum boninense (PL1, PL9, OL2), Colletotrichum gloeosporiodes (OL3) and Colletotrichum siamense (PL3). The isolates were treated with blue, red, green, and yellow light, while white fluorescent light (12 h light/12 h dark photoperiod) and 24 h dark conditions were applied as control. Results revealed that coloured light treatments induced formation of circadian rings, while exposure to white light and dark conditions showed less pronounced circadian rings. Growth and sporulation of endophytes were not significantly influenced by light. By contrast, enzyme production was affected by coloured light treatments, notably with red (amylase), blue (cellulase) and yellow (cellulase, xylanase, L-asparaginase) light, resulting in lower enzyme levels for certain isolates. Under control conditions, enzyme production was relatively higher for amylase, cellulase, xylanase (for cultures incubated in the dark), and for L-asparaginase (for cultures incubated in white fluorescent light). Among the endophytic isolates, F. proliferatum (CCH) showed better response to coloured light treatment as higher sporulation and enzyme production was detected, although growth was significantly suppressed. On the contrary, C. gloeosporiodes (OL3) showed better growth but significantly lower enzyme production and sporulation when treated with the various coloured light. This study revealed that coloured light may have the potential to manipulate growth, sporulation and enzyme production in certain fungal species as strategies for fungal control or for harnessing of valuable enzymes.

在增殖镰刀菌(CCH) 、博宁炭疽病菌(PL1、PL9、OL2)、胶孢炭疽病菌(OL3) 和暹罗炭疽病菌 (PL3)的内生分离株上测试了光调节对真菌生长和酶产生的影响。用蓝色、红色、绿色和黄色光处理分离株，同时应用白色荧光灯（12小时光照/12小时黑暗光周期）和24小时黑暗条件作为对照。结果显示，彩色光治疗会诱导昼夜节律环的形成，而暴露在白光和黑暗条件下则显示出不太明显的昼夜节律环。内生菌的生长和孢子形成不受光的显着影响。相比之下，酶的产生受到彩色光处理的影响，特别是红光（淀粉酶）、蓝光（纤维素酶）和黄光（纤维素酶、木聚糖酶、L-天冬酰胺酶），导致某些分离株的酶水平较低。在对照条件下，淀粉酶、纤维素酶、木聚糖酶（对于在黑暗中培养的培养物）和L-天冬酰胺酶（对于在白色荧光灯下培养的培养物）的酶产量相对较高。在内生分离株中，F. proliferatum (CCH) 对色光处理表现出更好的反应，因为检测到更高的孢子形成和酶产生，尽管生长受到显着抑制。相反，当用各种颜色的光处理时，C. gloeosporiodes (OL3) 表现出更好的生长，但酶的产生和孢子形成显着降低。这项研究表明，彩色光可能具有操纵某些真菌物种的生长、孢子形成和酶产生的潜力，作为真菌控制或利用有价值的酶的策略。