Solidot: 科学家发现水稻抗旱基因

Solidot

奇客的资讯，重要的东西

科学家发现水稻抗旱基因
http://solidot.org.feedsportal.com/c/33236/f/556826/s/2f845e65/l/0L0Ssolidot0Borg0Cstory0Dsid0F35855/story01.htm
Aug 3rd 2013, 16:31

科学家确认一种基因可以帮助水稻在干旱气候中保产。目前干旱高温已成为越来越严重的全球性威胁，这种基因可以缓解干旱造成的水稻歉收问题。这种基因能让水稻根须对重力作用反应更明显。拥有这种基因的水稻比没有该基因的水稻在泥土中扎根更深，可以从地表更深层吸收水分。该基因被称为"DRO1（DR是deeper rooting的缩写）"。日本的研究人员发现，在中等旱情条件下，没有"DRO1"基因的水稻产量会减少60%，而带有这种基因的水稻几乎不受旱情的影响。水稻是世界大约一半人口的主食，而气候变化问题预计将对粮食生产形成挑战。日本研究人员说，玉米等作物有和DRO1相似的基因，因此也能证明这种基因对作物适应旱情很有帮助。This entry passed through the Full-Text RSS service — if this is your content and you're reading it on someone else's site, please read the FAQ at fivefilters.org/content-only/faq.php#publishers. Five Filters recommends: 'You Say What You Like, Because They Like What You Say' - http://www.medialens.org/index.php/alerts/alert-archive/alerts-2013/731-you-say-what-you-like-because-they-like-what-you-say.html



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