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黄瓜、番茄和大豆同是双子叶植物，缺铁诱导的适应性机制都属于机理Ｉ，但是它们在适应缺铁胁迫的具体反应上却各有不同。黄瓜、蕃茄缺铁时主要表现为近根尖处膨大、变粗，根毛增多，发育成具有转移细胞特征，并主动向外分泌大量Ｈ＋，使根系对Ｆｅ（Ⅲ）还原能力显著增强，从而提高了根际中铁的有效性。大豆则主要是依靠根尖膨大、变粗，表皮、皮层中积累大量酚类物质来还原难溶性Ｆｅ３＋化合物。植物基因型之间对缺铁胁迫的这种反应上的差异，给铁高效基因型筛选和遗传育种工作提供了广阔的前景。
Cucumber, tomato and soybean are both dicotyledonous plants. The mechanism induced by iron deficiency belongs to mechanism I, but they have different responses to the specific reaction to iron deficiency stress. In cucumber and tomato, iron deficiency was mainly manifested as enlargement and thickening near root tip, increased root hair, development of metastatic cells, and outward secretion of a large amount of H +, which significantly enhanced the reduction ability of Fe (Ⅲ) to roots The Effectiveness of Iron in the Rhizosphere. Soy mainly rely on the apical enlargement, thickening, the epidermis, the cortex accumulated a large number of phenols to restore insoluble Fe3 + compounds. This difference in response to iron deficiency stress between plant genotypes offers broad prospects for efficient genotyping and genetic breeding of iron.