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铁是水稻生长的必需元素之一,然而由于种种原因使铁处于难吸收状态造成缺铁环境,这极大影响水稻正常发育和产量。水稻可利用根部合成并分泌麦根酸而将Fe3+螯合实现吸收(策略II),也可直接吸收Fe2+(策略I),这两种策略可协同作用使水稻在缺铁环境下获得尽可能多的铁,以满足生长和发育需要。在实际生产中,可通过转基因而增加麦根酸合成或Fe2+的吸收来达到增加水稻铁吸收的目的,从而增加水稻产量和改善水稻品质。
Iron is one of the essential elements for rice growth. However, due to various reasons, the iron is in a state of absorption and causes iron deficiency environment, which greatly affects normal rice development and yield. Rice can utilize the root synthesis and secretion of myristic acid to chelate Fe3 + (Strategy II) or direct absorption of Fe2 + (Strategy I), both of which work synergistically to achieve as much as possible iron deficiency in rice Iron to meet growth and development needs. In actual production, the purpose of increasing iron absorption of rice can be achieved by increasing the synthesis of ghrelin or the absorption of Fe2 + by transgene, thereby increasing the yield of rice and improving the quality of rice.