由于水稻的基因组较小,已经被科学家利用为模式植物,用以研究其他的谷物植物。水稻基因组长度大约为420Mb, 是玉米基因组的1/6,是小麦基因组的1/40。虽然在2004年已完成水稻基因组的测序,但是对于单个水稻基因的功能研究已经落后于其他谷类植物。
加州大学戴维斯分校的Pamela Ronald教授及其同事、以及韩国浦项科技大学的研究者们已对各种方法进行分类,用以测定水稻基因的功能。这些能够帮助科学家发现41,000个水稻基因功能的工具或方法包括:一个或多个基因功能缺失的水稻品系(指数基因的突变),分析在不同环境中基因表达的多种方法,以及水稻基因功能分类数据库(whole-genome arrays and genome-tilling arrays)。
这些工具或方法也能应用于其他谷类作物的研究,以及生物能源植物,例如柳枝稷。这项研究得到了美国农业部州际研究、教育与推广局(CSREES)的资金支持。(生物谷Bioon.com)
生物谷推荐原始出处:
Nature Reviews Genetics 9, 91-101 (February 2008) | doi:10.1038/nrg2286
Towards a better bowl of rice: assigning function to tens of thousands of rice genes
Ki-Hong Jung1, Gynheung An2 & Pamela C. Ronald1 About the authors
Top of pageAbstractRice, one of the most important food crops for humans, is the first crop plant to have its genome sequenced. Rice whole-genome microarrays, genome tiling arrays and genome-wide gene-indexed mutant collections have recently been generated. With the availability of these resources, discovering the function of the estimated 41,000 rice genes is now within reach. Such discoveries have broad practical implications for understanding the biological processes of rice and other economically important grasses such as cereals and bioenergy crops.
1 Department of Plant Pathology, 1 Shields Avenue, UC Davis, Davis, California 95616, USA.
2 Department of Life Sciences, Pohang University of Science and Technology, Pohang, Republic of Korea 790-784.