Vivid biofluorescence discovered in the nocturnal Springhare (Pedetidae).

Vivid biofluorescence discovered in the nocturnal Springhare (Pedetidae).
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DOI:
10.1038/s41598-021-83588-0
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发表时间:
2021-02-18
期刊:
影响因子:
4.6
通讯作者:
Martin JG
Martin JG
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Olson ER;Carlson MR;Ramanujam VMS;Sears L;Anthony SE;Anich PS;Ramon L;Hulstrand A;Jurewicz M;Gunnelson AS;Kohler AM;Martin JG

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生物荧光已被检测到在几个黄昏-黄昏生物从无脊椎动物到鸟类和哺乳动物。哺乳动物的生物荧光已经在整个生殖系统中检测到,包括单孔类鸭嘴兽(Ornithorhyncus anatinus),有袋负鼠(Didelphidae)和新大陆胎盘飞鼠(Gluacomys spp.)。在这里,我们记录生动的生物荧光的springhare(Pedetidae)在博物馆标本和圈养的个人,第一个记录的生物荧光的旧大陆胎盘哺乳动物。我们探索了整个样品中生物荧光的变化,并表征了其物理和化学性质。相对于在其他哺乳动物中发现的生物荧光,这种引人注目的视觉图案和颜色变化的强度是独一无二的。我们建立了springhare中的生物荧光可能起源于头发纤维的角质层内,并且至少部分地源自几种荧光卟啉和可能存在于我们的标准卟啉混合物中的一种未分配分子。这一发现进一步支持了这一假设,即生物荧光可能是生态重要的哺乳动物,并表明它可能更广泛地分布在整个哺乳动物比以前认为的。
Biofluorescence has been detected in several nocturnal-crepuscular organisms from invertebrates to birds and mammals. Biofluorescence in mammals has been detected across the phylogeny, including the monotreme duck-billed platypus (Ornithorhyncus anatinus), marsupial opossums (Didelphidae), and New World placental flying squirrels (Gluacomys spp.). Here, we document vivid biofluorescence of springhare (Pedetidae) in both museum specimens and captive individuals—the first documented biofluorescence of an Old World placental mammal. We explore the variation in biofluorescence across our sample and characterize its physical and chemical properties. The striking visual patterning and intensity of color shift was unique relative to biofluorescence found in other mammals. We establish that biofluorescence in springhare likely originates within the cuticle of the hair fiber and emanates, at least partially, from several fluorescent porphyrins and potentially one unassigned molecule absent from our standard porphyrin mixture. This discovery further supports the hypothesis that biofluorescence may be ecologically important for nocturnal-crepuscular mammals and suggests that it may be more broadly distributed throughout Mammalia than previously thought.
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