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Why Do Certain Fungi Produce Bioluminescent Mycelium Only in Darkness?
为什么某些真菌仅在黑暗中产生发光菌丝?
精读先不看文字,完整听一遍。
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Species like Neonothopanus gardneri emit soft green light from their mycelial networks exclusively at night.如加德纳夜光菌等物种仅在夜间通过菌丝网络发出柔和的绿光。
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A luciferin-luciferase reaction powers this glow, but the enzyme only activates when light-sensitive proteins detect darkness.这种发光由荧光素-荧光素酶反应驱动,但该酶仅在感光蛋白检测到黑暗时才被激活。
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Blue-light receptors suppress bioluminescence during daylight by blocking transcription of key luminescence genes.蓝光受体在白天通过抑制关键发光基因的转录来阻断生物发光。
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This circadian regulation conserves energy and avoids attracting daytime predators like birds or insects.这种昼夜节律调控既节约能量,又避免吸引鸟类或昆虫等昼行性捕食者。
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The glow attracts nocturnal arthropods that disperse spores while feeding on fungal tissue or secretions.发光可吸引夜行节肢动物,它们在取食真菌组织或分泌物时帮助传播孢子。
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Researchers found that constant light exposure stops glowing within 48 hours—even if nutrients remain abundant.研究人员发现,持续光照48小时内发光即停止,即使营养依然充足。
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Fungal bioluminescence differs from marine organisms because it requires oxygen, luciferin, and ATP all simultaneously.真菌生物发光与海洋生物不同,必须同时具备氧气、荧光素和ATP。
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Its spectral peak at 490 nm matches the visual sensitivity of many night-active insects perfectly.其发光光谱峰值位于490纳米,恰好匹配多种夜行昆虫的视觉敏感范围。
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Field studies show higher spore dispersal rates under moonless nights compared to full-moon conditions.野外研究表明,无月夜的孢子传播率高于满月夜。
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This adaptation highlights how evolution fine-tunes biological light emission for ecological timing and function.这一适应性凸显了进化如何精准调控生物发光,以契合生态时间与功能需求。
精读 · 大约 10 分钟
听 → 读 → 学表达 → 懂 → 今天会说这一句 → 跟读录音 → 自己说一句。
③ 学 · 重点表达
- Blue-light receptors suppress bioluminescence during daylight by blocking transcription of key luminescence genes. 蓝光受体在白天通过抑制关键发光基因的转录来阻断生物发光。
- This circadian regulation conserves energy and avoids attracting daytime predators like birds or insects. 这种昼夜节律调控既节约能量,又避免吸引鸟类或昆虫等昼行性捕食者。
- Field studies show higher spore dispersal rates under moonless nights compared to full-moon conditions. 野外研究表明,无月夜的孢子传播率高于满月夜。
④ 懂 · 选一选
⑤ 今天会说这一句
Blue-light receptors suppress bioluminescence during daylight by blocking transcription of key luminescence genes.
⑥ 跟读并录音
Blue-light receptors suppress bioluminescence during daylight by blocking transcription of key luminescence genes.
第一版:录下来、回听、再听标准音。系统打分以后再加。
⑦ 说 · 自己来一句
用今天的表达,自己说一句。
例子:Blue-light receptors suppress bioluminescence during daylight by blocking transcription of key luminescence genes.
已记下。连续天数以后会显示在课表里。
陈老师指导
课程开发中,敬请期待。成人和孩子都可以先自学听读、精读。
这边的讲解音轨还在做。想先跟着老师走完固定 30 课,可以去陈老师带读社(和自学通行不是同一份会员)。
课程开发中,敬请期待。