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. 2020 Jun 18;9(6):762. doi: 10.3390/plants9060762

Figure 2.

Figure 2

In plant rhizosphere Trichoderma produces a siderophore which chelates insoluble Fe (Fe3+) and facilitate its conversion to soluble Fe (Fe2+) form. By doing this, Trichoderma also make Fe source unavailable to pathogenic fungi and thereby deprive them of Fe.