Plant Growth Promoting and Disease Controlling Activities of Pseudomonas geniculata ANG3, Exiguobacterium acetylicum ANG40 and Burkholderia stabilis ANG51 Isolated from Soil

Kim, Ji-Youn; Kim, Hee Sook; Lee, Song Min; Park, Hye-Jung; Lee, Sang-Hyeon; Jang, Jeong Su; Lee, Mun Hyon

doi:10.4014/mbl.1906.06002

Cited by 7 publications

(5 citation statements)

References 30 publications

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“…At the tillering stage, the abundance of Exiguobacterium in the artificial soil with added rice straw was hundreds of times higher than that in the control, and the level in the leaf was dozens of times higher than that in the control. Some studies have shown that the bacterium has a broad-spectrum antibacterial effect on gram-positive and gram-negative foodborne pathogenic bacteria, and also has antagonistic effect on a variety of plant pathogenic bacteria, and shows the ability of nitrogen fixation, phosphate solubilization, and iron carrier generation 57 , 58 . It may be because the large amount of this bacterium promotes the growth of rice with added rice straw in the later stage, and shortened the gap between the samples and the control.…”

Section: Discussionmentioning

confidence: 99%

Effects of different straw returning amounts and fertilizer conditions on bacteria of rice’s different part in rare earth mining area

Jin

Huang

Dong

et al. 2023

Sci Rep

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Pot experiments were conducted to explore the effects of different rice straw returning soil on the community structure and function of bacteria in rice root, rhizosphere, leaf and phyllosphere under 7 conditions of rice straw combined with different fertilizers respectively. The results showed that: rice straw returning in different ways increased the content of soil pH and K, and reduced the accumulation of N, P and organic matter in soil, and different rice straw returning ways had different effects; rice straw returning reduced dry weight of rice grain, 2% of rice straw returning reduced rice grain greater than that of 1% rice straw returning; The reduction of NP combined fertilization is greater than that of NK combined fertilization and NPK combined fertilization. Except for the decrease of chao_1 index in rice root at maturity, rice straw returning significantly improved the abundance, diversity and evenness of bacteria in rice root, rhizosphere, leaf and phyllosphere. Rice straw returning increased the content of REEs in rice, and 2% of rice straw returning soil increased rare earth element (REE) content in rice grain greater than that of 1% rice straw returning soil. Different ways of rice straw returning soil reduced the abundance of Bacillus, while the abundance of Exiguobacterium in rice leaves was hundreds of times higher than that of the control group, and the genus in leaves was dozens of times higher than that of the control group, 2% of rice straw returning soil increased the abundance of harmful bacteria and pathogens of Acidovorax, Clostridium sensu stricto, Citrobacter, Curtobacterium, and 1% of rice straw returning soil promoted the abundance of nitrogen fixing bacteria, plant growth-promoting bacteria, stress resistant bacteria such as Lactobacillus, Azospira, Acinetobacter, Bradyrhizobium and Acidocella; Environmental factors such as available P, organic matter, total nitrogen, nitrate nitrogen, rare earth element content in rice roots, available K and soil moisture are important factors affecting the community structure of bacteria in rice roots, rhizosphere, leaf and phyllosphere at tillering stage of the rice. pH, REE content in rice roots, shoots, organic matter, total nitrogen, nitrate nitrogen and soil moisture content are the main environmental factors affecting the community structure of bacteria in rice roots, rhizosphere, leaf and phyllosphere at maturity stage of rice. 2% rice straw returning soil promoted the formation of harmful bacteria, which may be an important reason for its significant reduction in the dry weight of rice grains.

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Section: Discussionmentioning

confidence: 99%

Effects of different straw returning amounts and fertilizer conditions on bacteria of rice’s different part in rare earth mining area

Jin

Huang

Dong

et al. 2023

Sci Rep

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“…A recent study demonstrated Limnobacter was abundant in the capsule of Serapias vomeracea ( Alibrandi et al., 2020 ) and in the phyllosphere of Nicotiana tabacum ( Xing et al., 2021 ). Exiguobacterium has been reported to contribute to plant growth and health, probably due to its broad-spectrum antagonistic effects on phytopathogens and the abilities to fix atmospheric nitrogen and solubilize phosphate ( Dastager et al., 2010 ; Ji-Youn et al., 2020 ). It is interesting to note that the abundance of Exiguobacterium in rice leaves was greatly improved with the application of rice straw and NPK fertilizer in the soil ( Jin et al., 2023 ).…”

Section: Discussionmentioning

confidence: 99%

Characterization of endophytic bacteriome diversity and associated beneficial bacteria inhabiting a macrophyte Eichhornia crassipes

Fan,

Schwinghamer,

Liu

et al. 2023

Front. Plant Sci.

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IntroductionThe endosphere of a plant is an interface containing a thriving community of endobacteria that can affect plant growth and potential for bioremediation. Eichhornia crassipes is an aquatic macrophyte, adapted to estuarine and freshwater ecosystems, which harbors a diverse bacterial community. Despite this, we currently lack a predictive understanding of how E. crassipes taxonomically structure the endobacterial community assemblies across distinct habitats (root, stem, and leaf).MethodsIn the present study, we assessed the endophytic bacteriome from different compartments using 16S rRNA gene sequencing analysis and verified the in vitro plant beneficial potential of isolated bacterial endophytes of E. crassipes.Results and discussionPlant compartments displayed a significant impact on the endobacterial community structures. Stem and leaf tissues were more selective, and the community exhibited a lower richness and diversity than root tissue. The taxonomic analysis of operational taxonomic units (OTUs) showed that the major phyla belonged to Proteobacteria and Actinobacteriota (> 80% in total). The most abundant genera in the sampled endosphere was Delftia in both stem and leaf samples. Members of the family Rhizobiaceae, such as in both stem and leaf samples. Members of the family Rhizobiaceae, such as Allorhizobium- Neorhizobium-Pararhizobium-Rhizobium were mainly associated with leaf tissue, whereas the genera Nannocystis and Nitrospira from the families Nannocystaceae and Nitrospiraceae, respectively, were statistically significantly associated with root tissue. Piscinibacter and Steroidobacter were putative keystone taxa of stem tissue. Most of the endophytic bacteria isolated from E. crassipes showed in vitro plant beneficial effects known to stimulate plant growth and induce plant resistance to stresses. This study provides new insights into the distribution and interaction of endobacteria across different compartments of E. crassipes Future study of endobacterial communities, using both culture-dependent and -independent techniques, will explore the mechanisms underlying the wide-spread adaptability of E. crassipesto various ecosystems and contribute to the development of efficient bacterial consortia for bioremediation and plant growth promotion.

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“…It has antagonistic effect on a variety of plant pathogenic bacteria. It shows the ability of nitrogen fixation, phosphate solubilization and iron carrier generation 69 , 70 . The relative abundance of Weissella in leaves is high, which is beneficial bacteria 71 .…”

Section: Discussionmentioning

confidence: 99%

Effects of rare earth elements on bacteria in rhizosphere, root, phyllosphere and leaf of soil–rice ecosystem

Xin-zhuan

Pan

et al. 2022

Sci Rep

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The effects of rare earth mining on rice biomass, rare earth element (REE) content and bacterial community structure was studied through pot experiment. The research shows that the REE content in rice roots, shoots and grains was significantly positive correlated with that in soil, and the dry weight of rice roots, shoots and grains was highly correlated with soil physical and chemical properties, nutrient elements and REE contents; The exploitation of rare earth minerals inhibited a-diversity of endophytic bacteria in rhizosphere, root, phyllosphere and leaf of rice, significantly reduced the abundance index, OTU number, Chao, Ace index and also significantly reduced the diversity index–Shannon index, and also reduced uniformity index: Pielou’s evenness index, which caused β-diversity of bacteria to be quite different. The exploitation of rare earth minerals reduces the diversity of bacteria, but forms dominant bacteria, such as Burkholderia, Bacillus, Buttiauxella, Acinetobacter, Bradyrhizobium, Candida koribacter, which can degrade the pollutants formed by exploitation of rare earth minerals, alleviate the compound pollution of rare earth and ammonia nitrogen, and also has the function of fixing nitrogen and resisting rare earth stress; The content of soil available phosphorus in no-mining area is lower, and the dominant bacteria of Pantoea formed in such soil, which has the function of improving soil phosphorus availability. Rare earth elements and physical and chemical properties of soil affect the community structure of bacteria in rhizosphere and phyllosphere of rice, promote the parallel movement of some bacteria in rhizosphere, root, phyllosphere and leaf of rice, promote the construction of community structure of bacteria in rhizosphere and phyllosphere of rice, give full play to the growth promoting function of Endophytes, and promote the growth of rice. The results showed that the exploitation of rare earth minerals has formed the dominant endophytic bacteria of rice and ensured the yield of rice in the mining area, however, the mining of mineral resources causes the compound pollution of rare earth and ammonia nitrogen, which makes REE content of rice in mining area significantly higher than that in non-mining area, and the excessive rare earth element may enter the human body through the food chain and affect human health, so the food security in the REE mining area deserves more attention.

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Plant Growth Promoting and Disease Controlling Activities of Pseudomonas geniculata ANG3, Exiguobacterium acetylicum ANG40 and Burkholderia stabilis ANG51 Isolated from Soil

Cited by 7 publications

References 30 publications

Effects of different straw returning amounts and fertilizer conditions on bacteria of rice’s different part in rare earth mining area

Effects of different straw returning amounts and fertilizer conditions on bacteria of rice’s different part in rare earth mining area

Characterization of endophytic bacteriome diversity and associated beneficial bacteria inhabiting a macrophyte Eichhornia crassipes

Effects of rare earth elements on bacteria in rhizosphere, root, phyllosphere and leaf of soil–rice ecosystem

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