由于水稻的基因組較小,已經(jīng)被科學(xué)家利用為模式植物,,用以研究其他的谷物植物,。水稻基因組長(zhǎng)度大約為420Mb, 是玉米基因組的1/6,,是小麥基因組的1/40,。雖然在2004年已完成水稻基因組的測(cè)序,,但是對(duì)于單個(gè)水稻基因的功能研究已經(jīng)落后于其他谷類植物。
加州大學(xué)戴維斯分校的Pamela Ronald教授及其同事,、以及韓國(guó)浦項(xiàng)科技大學(xué)的研究者們已對(duì)各種方法進(jìn)行分類,,用以測(cè)定水稻基因的功能。這些能夠幫助科學(xué)家發(fā)現(xiàn)41,000個(gè)水稻基因功能的工具或方法包括:一個(gè)或多個(gè)基因功能缺失的水稻品系(指數(shù)基因的突變),,分析在不同環(huán)境中基因表達(dá)的多種方法,,以及水稻基因功能分類數(shù)據(jù)庫(kù)(whole-genome arrays and genome-tilling arrays)。
這些工具或方法也能應(yīng)用于其他谷類作物的研究,,以及生物能源植物,,例如柳枝稷。這項(xiàng)研究得到了美國(guó)農(nóng)業(yè)部州際研究,、教育與推廣局(CSREES)的資金支持,。(生物谷Bioon.com)
生物谷推薦原始出處:
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.