Plants tolerant of high boron levels
Plants tolerant of high boron levels
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DOI：
10.1126/science.1146634
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发表时间：
2007-11-30
期刊：
影响因子：
56.9
通讯作者：
Fujiwara, Toru
中科院分区：
文献类型：
--
作者：
Miwa, Kyoko;Takano, Junpei;Fujiwara, Toru
由于土壤中含有有毒水平的硼（B）而导致的作物产量降低是粮食生产中的一个世界性问题。据估计，澳大利亚南部高达17%的大麦产量损失是由B毒性引起的。我们发现，AtBOR4的表达，一个拟南芥属的BOR1，第一个确定的硼转运蛋白基因，产生的植物是耐受高B水平。BOR4是极性定位的硼酸盐输出者，其增强B从根的流出。本研究为提高干旱区高B土壤的作物生产力奠定了基础。
Reduced crop productivity due to soils containing toxic levels of boron (B) is a worldwide problem in food production. It is estimated that up to 17% of the barley yield losses in southern Australia are caused by B toxicity. We found that the expression of AtBOR4, an Arabidopsis paralog of BOR1, the first identified boron transporter gene, generates plants that are tolerant of high B levels. BOR4 is a polarly localized borate exporter that enhances B efflux from roots. The present study is a foundation for the improvement of crop productivity in soils containing excess B, which are distributed in arid areas of the world.