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榴莲为什么会臭?科学家破解“气味王”基因

2017-10-13 06:57:53   

新加坡科学家最近揭开了榴莲刺鼻气味的奥秘。

英国广播公司10日报道,新加坡研究人员发现,榴莲的刺鼻气味来自一种气味基因。

在一群不愿具名的榴莲爱好者的资助下,一个由5名科学家组成的团队,历时3年,首次完成榴莲完整基因图谱的绘制。

参与研究的遗传学家帕特里克·谭说:“我们的分析显示,榴莲含有一种易挥发的硫化合物。这也印证了很多人觉得榴莲有股硫磺味的观点。”

科学家说,这一发现意味着未来有可能创造出“无味或气味清淡”的水果。

但这一发现让榴莲爱好者们心情复杂,喜好榴莲的人正是钟爱那股特殊的刺鼻气味。

一名榴莲爱好者在社交媒体上说,“没有了气味的榴莲就像是一具没有实质的空壳”,就像“一个丢失了灵魂的人”。

研究人员称,榴莲独特的气味对它在野外生存有着特殊的作用:能够吸引动物食用,由此传播种子。

榴莲被种植于东南亚热带地区,是当地常见水果。由于气味刺鼻,新加坡禁止在公共交通工具上携带榴莲。

研究人员还发现,榴莲的基因组包含约4.6万个基因,约是人类基因数量的两倍;榴莲的历史可追溯到6500万年前,与可可树有亲缘关系。(金悦磊)【新华社微特稿】

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