马铃薯来自番茄?研究揭示古代杂交赋予了我们这一淀粉主食
马铃薯来自番茄?研究揭示古代杂交赋予了我们这一淀粉主食,<\/h2>
科学家们揭示了世界上最受欢迎的食物之一——马铃薯的惊人起源故事。根据发表在《细胞》期刊上的一项开创性研究,现代马铃薯是古代番茄和来自智利的一种野生马铃薯近亲——Etuberosum<\/em>之间杂交的结果。这一出人意料的谱系多年来一直困扰着研究人员,但最近的基因分析现在已经提供了明确的解释。
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由农业科学院研究人员主导的研究发现,马铃薯的进化始于大约900万年前。尽管番茄和Etuberosum<\/em>看起来可能并不相似,但它们的基因贡献对于塑造我们如今所知的马铃薯这一块茎植物至关重要。
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研究人员发现,番茄中的SP6A<\/em>基因对于指导植物形成块茎——即储存营养并作为马铃薯可食用部分的膨大地下茎——至关重要。同时,Etuberosum<\/em>中的IT1<\/em>基因帮助调节这些块茎的生长。这两种基因的贡献共同促成了富含淀粉和营养的块茎的形成,这些块茎在数世纪来养活了数以百万计的人。
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该研究涉及分析450种栽培马铃薯品种和56种野生马铃薯物种的基因组。这一庞大的数据集是同类中最大的,使研究人员能够以前所未有的清晰度追溯马铃薯的基因历史。正如论文第一作者张志强所指出的,采集野生马铃薯样本的困难使这一成就更加显著。
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番茄和马铃薯之间的联系不仅限于基因层面,还体现在语言上。根据梅里亚姆-韦伯斯特词典,单词“番茄”源自纳瓦特尔语“tomatl”,这是阿兹特克人用来描述这种水果的词语。有趣的是,英语单词“马铃薯”可能也源自相同的语言根源,因为该植物在番茄传入欧洲之前就已经被引入欧洲。这种语言上的类比为马铃薯的起源增添了更多谜团。
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这项研究强调了杂交在塑造新物种和性状方面的强大作用,为未来农业研究提供了宝贵的见解。正如主要研究人员黄三文所解释的,这项研究不仅解决了长期存在的谜团,也展示了基因多样性在作物进化中的重要性。
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现代马铃薯是自然界坚韧和适应能力的证明。从其作为两个看似无关物种的杂交体的卑微起源开始,它已成为全球的主食——一种曾养活了多代人,并至今仍在滋养着数百万人的食物。这一发现不仅加深了我们对这种植物历史的理解,也突显了基因研究在农业和粮食安全方面解锁新可能性的潜力。
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马铃薯背后的基因配方<\/h3>
番茄与马铃薯之间的语言联系<\/h3>
坚韧与创新的遗产<\/h3>
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- /www/sites/aitinytools.com/index/runtime/c5397e639e050ba34465e510fd86cc17.php ( 19.77 KB )
- /www/sites/aitinytools.com/index/vendor/topthink/framework/src/think/Response.php ( 8.81 KB )
- /www/sites/aitinytools.com/index/vendor/topthink/framework/src/think/response/Html.php ( 0.97 KB )
- /www/sites/aitinytools.com/index/vendor/topthink/think-trace/src/Html.php ( 4.49 KB )
- CONNECT:[ UseTime:0.001355s ] mysql:host=1Panel-mysql-46eb;port=3306;dbname=ai;charset=utf8
- SHOW FULL COLUMNS FROM `news_article` [ RunTime:0.001878s ]
- SELECT * FROM `news_article` WHERE `id` = 11662 LIMIT 1 [ RunTime:0.000518s ]
- SHOW FULL COLUMNS FROM `news_article_i18n` [ RunTime:0.001657s ]
- SELECT * FROM `news_article_i18n` WHERE `lang` = 'zh-cn' AND `news_article_id` = 11662 LIMIT 1 [ RunTime:0.000751s ]