Phylogenetic diversity and investigation of plant growth-promoting traits of actinobacteria in coastal salt marsh plant rhizospheres from Jiangsu, China

Gong, Yuxuan; Bai, Juan-Luan; Yang, Huan-Ting; Zhang, Wendi; Xiong, You-Wei; Ding, Peng; Qin, Sheng

doi:10.1016/j.syapm.2018.06.003

Cited by 55 publications

(32 citation statements)

References 81 publications

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“…Furthermore, extremophilic actinobacteria have been thoroughly investigated for their unique mechanisms of adaptation to extreme environments, and also because they produce several unusual metabolites especially for the inhibition of human pathogens [14,15]. Numerous studies have investigated the ecology of actinobacteria, typically within common habitats [16]. However, very little data is available on the diversity and ecological functions of actinobacteria inhabiting soils from Moroccan extreme sites.…”

Section: Introductionmentioning

confidence: 99%

Actinobacteria from Extreme Niches in Morocco and Their Plant Growth-Promoting Potentials

et al. 2019

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The objectives of this study were to assess actinobacterial diversity in five Moroccan extreme habitats and to evaluate their plant growth-promoting (PGP) activities. The soil samples were collected from different locations, including soils contaminated with heavy metals, from a high altitude site, from the desert, and from a marine environment. In total, 23 actinobacteria were isolated, 8 from Merzouga sand soil; 5 from Cannabis sativa rhizospheric soil; 5 from Toubkal mountain; 4 from a Draa sfar mining site; and 1 from marine soil. Based on their genotypic classification using 16S rRNA gene sequences, 19 of all belonged to the genus Streptomyces (82%) while the rest are the members of the genera Nocardioides (4.5%), Saccharomonospora (4.5%), Actinomadura (4.5%), and Prauserella (4.5%). Isolates Streptomyces sp. TNC-1 and Streptomyces sp. MNC-1 showed the highest level of phosphorus solubilization activity with 12.39 and 8.56 mg/mL, respectively. All 23 isolates were able to solubilize potassium, and 91% of them could grow under nitrogen-free conditions. The ability of the isolated actinobacteria to form indole-3-acetic acid (IAA) ranged from 6.70 to 75.54 μg/mL with Streptomyces sp. MNC-1 being the best IAA producer. In addition, all of the actinobacteria could produce siderophores, with Saccharomonospora sp. LNS-1 synthesizing the greatest amount (138.92 μg/mL). Principal coordinate analysis revealed that Streptomyces spp. MNC-1, MNT-1, MNB-2, and KNC-5; Saccharomonospora sp. LNS-1; and Nocardioides sp. KNC-3 each showed a variety of high-level plant growth-promoting activities. The extreme environments in Morocco are rich with bioactive actinobacteria that possess a variety of plant growth-promoting potentials that can further benefit green and sustainable agriculture.

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Section: Introductionmentioning

confidence: 99%

Actinobacteria from Extreme Niches in Morocco and Their Plant Growth-Promoting Potentials

et al. 2019

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“…Numerous studies have recently been conducted on the effect of Streptomyces isolates on the development of different plants and as biocontrol agents (Tokala et al, 2002;Sousa et al, 2008;Verma et al, 2011;Sadegni et al, 2012;Gong et al, 2018). Endophytic Streptomyces strains isolated from Azadirachta indica A. Jus were shown to have high performance in the development of tomato.…”

Section: Assessing Microorganisms' Performance In the Growth Of Tomatmentioning

confidence: 99%

“…Streptomyces isolates have been successful in a variety of plants such as Pisum sativum and in Acromyrmex octospinosus (Tokala et al, 2002;Seipke et al, 2011). Streptomyces strains were proven to be useful in stress conditions in the work of Gong et al (2018), who utilized 2 isolates as an enhancer in the development of wheat plant. Results indicated higher plant growth under salt stress conditions (Gong et al, 2018).…”

Section: Assessing Microorganisms' Performance In the Growth Of Tomatmentioning

confidence: 99%

“…Streptomyces strains were proven to be useful in stress conditions in the work of Gong et al (2018), who utilized 2 isolates as an enhancer in the development of wheat plant. Results indicated higher plant growth under salt stress conditions (Gong et al, 2018). Although there are many publications about the use of rhizosphere-derived isolates in plant growth promotion of different plants (Vasconcellos et al, 2010), a plant growth-promoting study with this type of strain has not been found in the literature and an important contribution to the existing Streptomycetes spp.…”

Section: Assessing Microorganisms' Performance In the Growth Of Tomatmentioning

confidence: 99%

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Identification of Streptomyces strains isolated from Humulus lupulus rhizosphere and determination of plant growth promotion potential of selected strains

Koçak

2019

Turk J Biol

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In the present study it was aimed to obtain novel strains of actinomycetes that have the ability to promote plant growth. For this, seven soil samples from the rhizosphere of Humulus lupulus (Pazaryeri, Bilecik) were used and potential isolates were obtained. 16S rRNA genes of 30 isolates were amplified by PCR and sequenced. Eighteen isolates were found to be closely related to Streptomycetes spp. and they were tested for their proteolytic activity, cellulase activity, phosphate solubility, IAA production, biofilm formation, and growth in nitrogen-limited medium. Two isolates, HCI 12 and HCI 36, were selected according to the results of these tests and their effects on growth of tomato plants (Solanum lycopersicum) were determined. Results indicated that the HCI 12 and HCI 36 strains caused a significant increase in root and shoot lengths, dry/fresh weights, and vigor index values compared to the control. The change in macromolecular structure including carbohydrates, proteins, and lipids of tomato plants with HCI 12 and HCI 36 inoculation was determined by Fourier transform infrared (FTIR) analysis. The results obtained from FTIR analysis were used in principal component analysis to evaluate changes in amide, carbohydrate, and lipid ratios of plant leaves due to microorganism application. Inoculation with the HCI 12 and HCI 36 strains caused a significant increase in the total carbohydrate and lipid ratio of tomato.

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“…Esses micro-organismos são amplamente distribuídos no solo, na água e em outros ambientes naturais (MAATAOUI et al, 2014). Também podem ser encontrados em ambientes muito extremos, como fontes termais, solos alcalinos, salinos e sedimentos do fundo do mar, além do intestino de animais (GONG et al, 2018).…”

Section: Introductionunclassified

Diversidade De Cepas De Actinobactérias Da RPPN “Fazenda Não Me Deixes”-Quixadá (Ce)

Silva¹,

Sousa²,

Martins³

et al. 2019

Enci Bio

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RESUMO Actinobactérias são bactérias Gram-positivas com DNA rico em guanina e citosina, mas morfologicamente se assemelham aos fungos. Representam uma das classes mais importantes de bactérias devido a sua capacidade de produzir uma vasta gama de metabólitos biologicamente ativos, é um grupo presente no semiárido nordestino, caracterizando-se pela diversidade cultural apresentada. Tendo conhecimento dessa heterogeneidade, a caracterização cultural converte-se em um instrumento para classificar e identificar esses organismos, dessa forma, objetivou-se caracterizar culturalmente cepas de actinobactérias do semiárido oriundas da RPPN "Fazenda Não Me Deixes"-Quixadá (CE). A caracterização cultural em virtude da cor do micélio aéreo e reverso e da textura das colônias evidenciaram a diversidade das cepas, sendo classificadas em 23 grupos distintos. O acervo de imagens gerado com foco nas diferenças culturais de actinobactérias do semiárido contribuirá com futuras pesquisas acerca desse grupo microbiano. PALAVRAS-CHAVE: Caatinga, micélio, Streptomyces CULTURAL DIVERSITY OF ACTINOBACTERIA STRAINS ISOLATED FROM RPPN "FAZENDA NÃO ME DEIXES"-QUIXADÁ (CE)

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Phylogenetic diversity and investigation of plant growth-promoting traits of actinobacteria in coastal salt marsh plant rhizospheres from Jiangsu, China

Cited by 55 publications

References 81 publications

Actinobacteria from Extreme Niches in Morocco and Their Plant Growth-Promoting Potentials

Actinobacteria from Extreme Niches in Morocco and Their Plant Growth-Promoting Potentials

Identification of Streptomyces strains isolated from Humulus lupulus rhizosphere and determination of plant growth promotion potential of selected strains

Diversidade De Cepas De Actinobactérias Da RPPN “Fazenda Não Me Deixes”-Quixadá (Ce)

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