Wheat-Aegilops chromosome addition lines showing high iron and zinc contents in grains
Wheat-Aegilops chromosome addition lines showing high iron and zinc contents in grains
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DOI：
10.1270/jsbbs.61.189
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发表时间：
2011-06
期刊：
影响因子：
2.4
通讯作者：
Shiwen Wang;Lina Yin;Hiroyuki Tanaka;Kiyoshi Tanaka;H. Tsujimoto
中科院分区：
文献类型：
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作者：
Shiwen Wang;Lina Yin;Hiroyuki Tanaka;Kiyoshi Tanaka;H. Tsujimoto
铁（Fe）和锌（Zn）的缺乏困扰着全世界超过30亿人，土壤中这些矿物质的缺乏也限制了世界总谷物种植面积的三分之一（Fe）和近一半（Zn）的作物产量。筛选改良小麦籽粒铁锌含量和利用效率的遗传资源，有助于人类健康和作物生产。对来自6个山羊草属物种的47个小麦-山羊草二体异附加系进行了鉴定，以鉴定携带高铁锌含量基因的染色体。山羊草1 S1和2S 1染色体附加系。longissima、1 SS和2SS的Ae. searsii、2U和6 U的Ae. umbellulata，Ae.的B.尾状体，Ae. peregrina和5毫克的Ae。与受体品种中国春相比，geniculata的籽粒Fe或Zn浓度增加了50%-248%。籽粒铁、锌含量显著高的异附加系多属于U、S基因型和同源群1、2染色体。这些品系可用于将基因精确渗入到优良小麦品种中，以提高小麦微量营养元素浓度。
Deficiencies of iron (Fe) and zinc (Zn) in afflict over three billion people worldwide, and deficiencies of these minerals in soil also limit crop production in one-third (Fe) and nearly half (Zn) of the world’s total cereal growing area. Screening genetic resources for improving wheat grain Fe and Zn contents and efficiency can contribute to both human health and crop production. We evaluated 47 wheat-Aegilops disomic addition lines derived from 6 Aegilops species to identify the chromosomes carrying genes for high grain Fe and Zn concentrations. Addition lines with chromosomes 1Sl and 2Sl of Ae. longissima, 1SS and 2SS of Ae. searsii, 2U and 6U of Ae. umbellulata, B of Ae. caudata, 4Sv of Ae. peregrina, and 5 Mg of Ae. geniculata showed increased grain Fe or Zn concentration of between 50% and 248% compared with the recipient cultivar, Chinese Spring. Most of alien chromosomes addition lines with significantly higher grain Fe and/or Zn concentrations belonged to the U and S genotypes and homoeologous groups 1 and 2 chromosomes. These lines could be used for the precise introgression of genes into elite wheat cultivars to improve wheat micronutrient concentrations.