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. 2020 Jun 19;11:837. doi: 10.3389/fpls.2020.00837

FIGURE 2.

FIGURE 2

Prevalence of each plant growth promotion trait in the endophytes isolated from cucumber plants pre-treated with a sedimentary humic acid. The traits evaluated were: inorganic phosphate solubilization at 14 days, siderophore production at 7 days, capability of growing in a N-free medium, and phytohormones production (IAA and CKs).