A gramineous plant having tolerance to iron deficiency which can grow even in an area with ion deficiency. More particularly, a gramineous plant having tolerance to iron deficiency and capable of vigorously growing even in calcareous alkaline soil which is constructed by transferring a gene of an enzyme in the pathway of the biosynthesis of mugineic acids in gramineous plants into a gramineous plant. A method of constructing a gramineous plant having improved iron absorbability which comprises transferring a gene encoding an enzyme (preferably nicotianamine aminotransferase; NAAT) in the pathway of the biosynthesis of mugineic acids into a gramineous plant; a gramineous plant constructed by the above method; a method of cultivating the above gramineous plant having improved iron absorbability; and a crop obtained by the cultivation. Namely, the constructing of a novel gramineous plant having tolerance to iron deficiency.
一种对缺
铁具有耐受性的禾本科植物,即使在离子缺乏的地区也能生长。更具体地说,是通过将禾本科植物中木犀
草酸生物合成途径中的一种酶的
基因转移到禾本科植物中而获得的一种耐缺
铁、即使在
石灰性碱性土壤中也能旺盛生长的禾本科植物。一种构建具有改善的
铁吸收性的禾本科植物的方法,包括将一种编码
戊二酸生物合成途径中的一种酶(优选烟酰胺转移酶;NAAT)的
基因转移到禾本科植物中;通过上述方法构建的禾本科植物;栽培上述具有改善的
铁吸收性的禾本科植物的方法;以及通过栽培获得的作物。即,构建具有耐缺
铁性的新型禾本科植物。