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Dr. Mohamed Gamal
lecturer of biotechnology - faculty of science- alazhar university

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0 Environmental Biotechnology
0 agricultural biotechnology
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Journal article
Published: 01 January 2021 in Plants
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In this study, 15 bacterial endophytes linked with the leaves of the native medicinal plant Pulicaria incisa were isolated and identified as Agrobacterium fabrum, Acinetobacter radioresistant, Brevibacillus brevis, Bacillus cereus, Bacillus subtilis, Paenibacillus barengoltzii, and Burkholderia cepacia. These isolates exhibited variant tolerances to salt stress and showed high efficacy in indole-3-acetic acid (IAA) production in the absence/presence of tryptophan. The maximum productivity of IAA was recorded for B. cereus BI-8 and B. subtilis BI-10 with values of 117 ± 6 and 108 ± 4.6 μg mL−1, respectively, in the presence of 5 mg mL−1 tryptophan after 10 days. These two isolates had a high potential in phosphate solubilization and ammonia production, and they showed enzymatic activities for amylase, protease, xylanase, cellulase, chitinase, and catalase. In vitro antagonistic investigation showed their high efficacy against the three phytopathogens Fusarium oxysporum, Alternaria alternata, and Pythium ultimum, with inhibition percentages ranging from 20% ± 0.2% to 52.6% ± 0.2% (p ≤ 0.05). Therefore, these two endophytic bacteria were used as bio-inoculants for maize seeds, and the results showed that bacterial inoculations significantly increased the root length as well as the fresh and dry weights of the roots compared to the control plants. The Zea mays plant inoculated with the two endophytic strains BI-8 and BI-10 significantly improved (p ≤ 0.05) the growth performance as well as the nutrient uptake compared with an un-inoculated plant.

ACS Style

Amr Fouda; Ahmed M. Eid; Albaraa Elsaied; Ehab F. El-Belely; Mohammed G. Barghoth; Ehab Azab; Adil A. Gobouri; Saad El-Din Hassan. Plant Growth-Promoting Endophytic Bacterial Community Inhabiting the Leaves of Pulicaria incisa (Lam.) DC Inherent to Arid Regions. Plants 2021, 10, 76 .

AMA Style

Amr Fouda, Ahmed M. Eid, Albaraa Elsaied, Ehab F. El-Belely, Mohammed G. Barghoth, Ehab Azab, Adil A. Gobouri, Saad El-Din Hassan. Plant Growth-Promoting Endophytic Bacterial Community Inhabiting the Leaves of Pulicaria incisa (Lam.) DC Inherent to Arid Regions. Plants. 2021; 10 (1):76.

Chicago/Turabian Style

Amr Fouda; Ahmed M. Eid; Albaraa Elsaied; Ehab F. El-Belely; Mohammed G. Barghoth; Ehab Azab; Adil A. Gobouri; Saad El-Din Hassan. 2021. "Plant Growth-Promoting Endophytic Bacterial Community Inhabiting the Leaves of Pulicaria incisa (Lam.) DC Inherent to Arid Regions." Plants 10, no. 1: 76.