Plant growth-promoting activities for bacterial and fungal endophytes isolated from medicinal plant of Teucrium polium L.

Hassan, Saad El-Din

doi:10.1016/j.jare.2017.09.001

Cited by 248 publications

(129 citation statements)

References 49 publications

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“…Endophytic bacteria and fungi are symbiotic microorganisms living inside healthy plant tissues without causing any disease symptoms. Some beneficial endophytes stimulate plant growth by producing plant hormones such as indole-3-acetic acid (Santoyo et al, 2016;Hassan, 2017), improve the tolerance to abiotic stresses (Pandey et al, 2018), or promote the plant immunity against microbial pathogens, insects, and herbivores (Azevedo et al, 2000;Ryan et al, 2008;Li et al, 2015;Bamisile et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

The Hsp90 Inhibitor, Monorden, Is a Promising Lead Compound for the Development of Novel Fungicides

et al. 2020

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Section: Introductionmentioning

confidence: 99%

The Hsp90 Inhibitor, Monorden, Is a Promising Lead Compound for the Development of Novel Fungicides

et al. 2020

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“…1 [Zhao et al 2015]. Furthermore, Bacillus endophytic strains were isolated from Teucrium polium L. medicinal plant grown in Egypt [Hassan 2017].…”

Section: Resultsmentioning

confidence: 99%

“…Similar results were obtained by other researchers, who have also observed that IAA producing endophytes positively affected the root development of agricultural plants. Hassan et al [2017] observed that IAA producing endophytes used to inoculate the maize seeds increased the root length. It is noteworthly that some studies confirmed that after inoculation with endophytes of agricultural plants, the root length is comparable to the control seedlings or even shorter [Abbamondi et al 2016].…”

Section: The Effect Of Seed Treatment With Bacterial Cultures On Tritmentioning

confidence: 99%

Plant Growth Promoting Bacterial Endophytes Isolated From Polish Herbal Plants

Goryluk-Salmonowicz¹,

Orzeszko-Rywka²,

Piórek³

et al. 2018

Acta Sci.Pol.Hortorum Cultus

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Endophytes produce a wide range of compounds with high application potential, mainly in medicine and agriculture. In this study, we test the hypothesis that endophytic bacteria produce indole-3-acetic acid (IAA), have positive influence on plant root development and are possible to application as plant-growth promoters. Endophytic bacteria were isolated from 3 native growing plant species: Chelidonium majus L., Elymus repens L., Solidago gigantea L. All endophytic strains produced IAA and the highest levels of IAA were observed for Pseudomonas azotoformans P3 strain. Triticale seed bacterization did not affect the seed germination, but had significant influence on root length and the longest roots were obtained after seed treatment with Pseudomonas sp. strains. Triticale roots were longer only in seedlings grown from seeds treated with endophytic strains producing high IAA levels (more than 22 µg ml -1 ). Our results suggest that endophytic Pseudomonas sp. strains isolated from Elymus repens L. can be used as plant-growth promoter.

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“…1B-7B and Penicillium Tp. 1F-5F could produce IAA, especially when the growth media are supplemented with Ltryptophan as a precursor (Hassan, 2017). In this study, molecular identi cation of the strain was based on 16S rRNA gene sequence and the phylogenetic tree was shown in Fig.…”

Section: Molecular Identi Cation Of the Strainmentioning

confidence: 99%

Highly Efficient Biosynthesis of Indole-3-acetic acid by Enterobacter xiangfangensis BHW6

Zhang

Wang

2020

Preprint

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Background: Indole-3-acetic acid (IAA) plays an important role in the growth and development of plants. Various bacteria in the rhizosphere are capable to produce IAA that acts as a signaling molecule for the communication between plants and microbes to promote the plant growth. Due to the low IAA content and various interfering analogs, it is difficult to detect and isolate IAA from microbial secondary metabolites. Results: A predominant strain with a remarkable capability to secrete IAA was identified as Enterobacter xiangfangensis BHW6 based on 16S rRNA gene sequence, the determination of average nucleotide identity (ANI) and digital DDH (dDDH). The maximum IAA content (134-1129 μg/mL) was found with the addition of 0.2-15 g/L of L-tryptophan at pH 5 for 6 days, which was 4-40 fold higher than that in the absence of L-tryptophan. The highest yield of IAA was obtained at the stationary phase of bacterial growth. An acidic culture medium was preferred for the IAA biosynthesis of the strain. The strain was tolerant and stable to produce IAA in the presence 2.5%-5% (w/v) of NaCl. IAA was then isolated through column chromatography with a mobile phase of hexane/ethyl acetate (1/2, v/v) and characterized by 1H Nuclear Magnetic Resonance (1H NMR). Conclusions: A remarkable IAA production was obtained from E. xiangfangensis BHW6 that was tryptophan–dependent. According to genomic analysis, the ipdC gene coding for the key enzyme (indole-3-pyruvate decarboxylase) was identified indicating that IAA biosynthesis was mainly through the indole-3-pyruvia acid (IPyA) pathway, which was further confirmed by intermediate assay. E. xiangfangensis BHW6 with an important economic value has great prospect in agricultural and industrial application.

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Plant growth-promoting activities for bacterial and fungal endophytes isolated from medicinal plant of Teucrium polium L.

Abstract: Graphical abstract

Cited by 248 publications

References 49 publications

The Hsp90 Inhibitor, Monorden, Is a Promising Lead Compound for the Development of Novel Fungicides

The Hsp90 Inhibitor, Monorden, Is a Promising Lead Compound for the Development of Novel Fungicides

Plant Growth Promoting Bacterial Endophytes Isolated From Polish Herbal Plants

Highly Efficient Biosynthesis of Indole-3-acetic acid by Enterobacter xiangfangensis BHW6

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