Seekbach J
Plant Physiol. 1969 Jun;44(6):816-20. doi: 10.1104/pp.44.6.816.
Iron administration to iron-starved cocklebur (Xanthium pensylvanicum) plants causes an increase in the iron content of ferritin fractions extracted from mature leaves. Xanthium plants grown under long days (vegetative stage) have more iron and ferritin than similarly iron-treated plants induced to flower under short day regimes. This first demonstration of ferritin in cocklebur (Compositae) leaves suggests that a substantial portion of iron that enters the iron-starved plant appears as this protein-iron macromolecule.
给缺铁的苍耳(Xanthium pensylvanicum)植株施用铁肥,会使从成熟叶片中提取的铁蛋白组分的铁含量增加。在长日照(营养生长阶段)下生长的苍耳植株比在短日照条件下诱导开花的、经过类似铁处理的植株含有更多的铁和铁蛋白。在苍耳(菊科)叶片中首次证明存在铁蛋白,这表明进入缺铁植株的大部分铁以这种蛋白质 - 铁大分子的形式存在。