scholarly journals Antagonism of Two Plant-Growth Promoting Bacillus velezensis Isolates Against Ralstonia solanacearum and Fusarium oxysporum

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Yu Cao ◽  
Hualiang Pi ◽  
Pete Chandrangsu ◽  
Yongtao Li ◽  
Yuqi Wang ◽  
...  
Keyword(s):  
Plant Growth ◽  
Fusarium Oxysporum ◽  
Ralstonia Solanacearum ◽  
Bacillus Velezensis ◽  
Plant Growth Promoting ◽  
Growth Promoting

scholarly journals Bacillus velezensisWall Teichoic Acids Are Required for Biofilm Formation and Root Colonization

2018 ◽  
Vol 85 (5) ◽  
Author(s):  
Zhihui Xu ◽  
Huihui Zhang ◽  
Xinli Sun ◽  
Yan Liu ◽  
Wuxia Yan ◽  
...  
Keyword(s):  
Plant Growth ◽  
Biofilm Formation ◽  
Root Colonization ◽  
Molecular Networks ◽  
Model Organisms ◽  
Bacillus Velezensis ◽  
Content Type ◽  
Plant Growth Promoting ◽  
Colonization Process ◽  
Growth Promoting

ABSTRACTRhizosphere colonization by plant growth-promoting rhizobacteria (PGPR) along plant roots facilitates the ability of PGPR to promote plant growth and health. Thus, an understanding of the molecular mechanisms of the root colonization process by plant-beneficialBacillusstrains is essential for the use of these strains in agriculture. Here, we observed that ansfpgene mutant of the plant growth-promoting rhizobacteriumBacillus velezensisSQR9 was unable to form normal biofilm architecture, and differential protein expression was observed by proteomic analysis. A minor wall teichoic acid (WTA) biosynthetic protein, GgaA, was decreased over 4-fold in the Δsfpmutant, and impairment of theggaAgene postponed biofilm formation and decreased cucumber root colonization capabilities. In addition, we provide evidence that the major WTA biosynthetic enzyme GtaB is involved in both biofilm formation and root colonization. The deficiency in biofilm formation of the ΔgtaBmutant may be due to an absence of UDP-glucose, which is necessary for the synthesis of biofilm matrix exopolysaccharides (EPS). These observations provide insights into the root colonization process by a plant-beneficialBacillusstrain, which will help improve its application as a biofertilizer.IMPORTANCEBacillus velezensisis a Gram-positive plant-beneficial bacterium which is widely used in agriculture. Additionally,Bacillusspp. are some of the model organisms used in the study of biofilms, and as such, the molecular networks and regulation systems of biofilm formation are well characterized. However, the molecular processes involved in root colonization by plant-beneficialBacillusstrains remain largely unknown. Here, we showed that WTAs play important roles in the plant root colonization process. The loss of thegtaBgene affects the ability ofB. velezensisSQR9 to sense plant polysaccharides, which are important environmental cues that trigger biofilm formation and colonization in the rhizosphere. This knowledge provides new insights into theBacillusroot colonization process and can help improve our understanding of plant-rhizobacterium interactions.

scholarly journals Antimicrobial, plant growth-promoting and genomic properties of the peanut endophyte Bacillus velezensis LDO2

2019 ◽  
Vol 218 ◽  
pp. 41-48 ◽  
Author(s):  
Liang Chen ◽  
Hao Shi ◽  
Junying Heng ◽  
Dianxuan Wang ◽  
Ke Bian
Keyword(s):  
Plant Growth ◽  
Bacillus Velezensis ◽  
Plant Growth Promoting ◽  
Growth Promoting

scholarly journals Plant growth-promoting activity of beta-propeller protein YxaL secreted from Bacillus velezensis strain GH1-13

PLoS ONE ◽  
2019 ◽  
Vol 14 (4) ◽  
pp. e0207968 ◽  
Author(s):  
Yong-Hak Kim ◽  
Yunhee Choi ◽  
Yu Yeong Oh ◽  
Nam-Chul Ha ◽  
Jaekyeong Song
Keyword(s):  
Plant Growth ◽  
Bacillus Velezensis ◽  
Plant Growth Promoting ◽  
Plant Growth Promoting Activity ◽  
Growth Promoting

scholarly journals Plant growth promoting bacteria with potential biocontrol agent of Fusarium oxysporum f. sp. Lycopersici , and Moniliophthora roreri

2019 ◽  
Vol 10 (3) ◽  
pp. 393-402
Author(s):  
Jefferson Guato-Molina ◽  
Javier Auhing-Arcos ◽  
Jorge Crespo-Ávila ◽  
Gabriel Esmeraldas-García ◽  
Antonio Mendoza-León ◽  
...  
Keyword(s):  
Plant Growth ◽  
Fusarium Oxysporum ◽  
Biocontrol Agent ◽  
Plant Growth Promoting Bacteria ◽  
Potential Biocontrol Agent ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Moniliophthora Roreri

scholarly journals Genome Mining of Three Plant Growth-Promoting Bacillus Species from Maize Rhizosphere

2021 ◽  
Author(s):  
Oluwaseyi Samuel Olanrewaju ◽  
Modupe Stella Ayilara ◽  
Ayansina Segun Ayangbenro ◽  
Olubukola Oluranti Babalola
Keyword(s):  
Bacillus Subtilis ◽  
Plant Growth ◽  
Bacillus Species ◽  
Bacillus Velezensis ◽  
Growth Promoters ◽  
Genetic Elements ◽  
Pan Genome ◽  
Genetic Components ◽  
Plant Growth Promoting ◽  
Growth Promoting

AbstractBacillus species genomes are rich in plant growth-promoting genetic elements. Bacillus subtilis and Bacillus velezensis are important plant growth promoters; hence, to further improve their abilities, the genetic elements responsible for these traits were characterized and reported. Genetic elements reported include those of auxin, nitrogen fixation, siderophore production, iron acquisition, volatile organic compounds, and antibiotics. Furthermore, the presence of phages and antibiotic-resistant genes in the genomes are reported. Pan-genome analysis was conducted using ten Bacillus species. From the analysis, pan-genome of Bacillus subtilis and Bacillus velezensis are still open. Ultimately, this study brings an insight into the genetic components of the plant growth-promoting abilities of these strains and shows their potential biotechnological applications in agriculture and other relevant sectors.

scholarly journals Isolation and Characterization of Plant Growth-Promoting Endophytic Bacteria Paenibacillus polymyxa SK1 from Lilium lancifolium

2020 ◽  
Vol 2020 ◽  
pp. 1-17 ◽  
Author(s):  
Mohammad Sayyar Khan ◽  
Junlian Gao ◽  
Xuqing Chen ◽  
Mingfang Zhang ◽  
Fengping Yang ◽  
...  
Keyword(s):  
Plant Growth ◽  
Fusarium Oxysporum ◽  
Botrytis Cinerea ◽  
Paenibacillus Polymyxa ◽  
Fusarium Fujikuroi ◽  
Botryosphaeria Dothidea ◽  
Isolation And Characterization ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Lilium Lancifolium

Paenibacillus polymyxa is a plant growth-promoting rhizobacterium that has immense potential to be used as an environmentally friendly replacement of chemical fertilizers and pesticides. In the present study, Paenibacillus polymyxa SK1 was isolated from bulbs of Lilium lancifolium. The isolated endophytic strain showed antifungal activities against important plant pathogens like Botryosphaeria dothidea, Fusarium oxysporum, Botrytis cinerea, and Fusarium fujikuroi. The highest percentage of growth inhibition, i.e., 66.67 ± 2.23%, was observed for SK1 against Botryosphaeria dothidea followed by 61.19 ± 3.12%, 60.71 ± 3.53%, and 55.54 ± 2.89% against Botrytis cinerea, Fusarium fujikuroi, and Fusarium oxysporum, respectively. The metabolite profiling of ethyl acetate fraction was assessed through the UHPLC-LTQ-IT-MS/MS analysis, and putative identification was done with the aid of the GNPS molecular networking workflow. A total of 29 compounds were putatively identified which included dipeptides, tripeptides, cyclopeptides (cyclo-(Leu-Leu), cyclo(Pro-Phe)), 2-heptyl-3-hydroxy 4-quinolone, 6-oxocativic acid, anhydrobrazilic acid, 1-(5-methoxy-1H-indol-3-yl)-2-piperidin-1-ylethane-1,2-dione, octadecenoic acid, pyochelin, 15-hydroxy-5Z,8Z,11Z, 13E-eicosatetraenoic acid, (Z)-7-[(2R,3S)-3-[(2Z,5E)-Undeca-2,5-dienyl]oxiran-2-yl]hept-5-enoic acid, arginylasparagine, cholic acid, sphinganine, elaidic acid, gossypin, L-carnosine, tetrodotoxin, and ursodiol. The high antifungal activity of SK1 might be attributed to the presence of these bioactive compounds. The isolated strain SK1 showed plant growth-promoting traits such as the production of organic acids, ACC deaminase, indole-3-acetic acid (IAA), siderophores, nitrogen fixation, and phosphate solubilization. IAA production was strongly correlated with the application of exogenous tryptophan concentrations in the medium. Furthermore, inoculation of SK1 enhanced plant growth of two Lilium varieties, Tresor and White Heaven, under greenhouse condition. In the light of these findings, the P. polymyxa SK1 may be utilized as a source of plant growth promotion and disease control in sustainable agriculture.

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