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. 2020 Apr 3;11:552. doi: 10.3389/fmicb.2020.00552

FIGURE 5.

FIGURE 5

Effect of the rhizosphere-competent actinobacterial isolates on growth and seed yield of Salicornia bigelovii. Effect of the treatment of the rhizosphere-competent auxin-, polyamine-, and ACCD-producing isolates on (A) performance; (B) dry weight and (C) length of shoot and root tissues; (D) photosynthetic pigment contents of chl a, chl b and carotenoids; and (E) dry weight of seeds, of S. bigelovii. In (A–D), the figure, dry weight and length of shoot and root tissues, and photosynthetic pigments were measured at 12 wps the seeds; whereas dry weight of seeds was measured at 20 wps. Values are means of 16 replicates for each sampling from two independent experiments. Mean values followed by different letters are significantly (P < 0.05) different from each other according to Fisher’s Protected LSD Test. Bars represent standard error. C, control (autoclaved non-inoculated oat bran); Sc, auxin-producing isolate #21 (S. chartreusis UAE1); St, polyamine-producing isolate #7 (S. tritolerans RAK1); Sr, ACCD-producing isolate #11 (S. rochei RAMS1); Sc/St/Sr, consortium of the three rhizosphere-competent isolates. ACCD, 1-aminocyclopropane-1-carboxylic deaminase; chl, chlorophyll; wps, weeks post-sowing.