Endophytes Bacillus amyloliquefaciens AW3 (CGMCC1.16683) improves the growth of Populus davidiana × Populus bolleana (PdPap) and induces its resistance to wilt disease by Fusarium oxysporum Fox68 (CFCC86068)

Zhang, Ping; Hao, Haotian; Wang, Lihai; Liu, Zhihua; Ma, Ling

doi:10.1007/s10658-021-02381-x

Cited by 8 publications

(4 citation statements)

References 49 publications

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“…Prior studies [29] also revealed that the induction of Pdpap poplar with B. amyloliquefaciens AW3 could increase the CAT activity of Pdpap poplar leaves, thus increasing the root rot of Pdpap poplar caused by Fusarium oxysporum infection. CAT activity significantly decreased after BY6-induced Pdpap poplar and obtained the opposite results.…”

Section: Discussionmentioning

confidence: 97%

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Bacillus velezensis BY6 Promotes Growth of Poplar and Improves Resistance Contributing to the Biocontrol of Armillaria solidipes

et al. 2022

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To improve the application of endophyte Bacillus velezensis BY6 from the xylem of poplar, the effect of BY6 on the growth of diseased Populus davidiana × Populus. alba var. pyramidalis Louche (Pdpap poplar) seedlings and the biological control effect on the pathogen Armillaria solidipes were tested using a plant split-root experiment. After applying BY6 to the roots of diseased Pdpap poplar seedlings, the results show that plant growth indicators (dry mass, fresh mass, and plant height) were significantly increased (p < 0.05), and genes related to auxin hormone signal transcription were activated. BY6 indicated a surprising control effect after the inoculation of diseased Pdpap poplar seedlings. Compared to the infected control group, the treated disease index of the diseased Pdpap poplar seedlings in the treatment group were reduced by 49.53% on the 20th day. The relative staining areas of diaminobenzidine (DAB) and Trypan blue decreased by 3.37 and 7.31 times, respectively. The physiological indicators (soluble sugar and protein) and oxidase indicators were significantly increased (p < 0.05). The expression levels of defense genes related to salicylic acid (SA) and jasmonic acid (JA) signaling pathways were significantly increased (p < 0.05). Amazingly, the results indicate that BY6 simultaneously activates induced systemic resistance (ISR) and systemic acquired resistance (SAR) in diseased Pdpap poplar seedlings and promotes growth. The results indicate that BY6 is a promising candidate for developing forest tree biofertilizers and biopesticides.

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Section: Discussionmentioning

confidence: 97%

“…In addition to preventing and controlling plant diseases, some biocontrol bacteria have growth-promoting effects [29]. The dry mass of treated groups increased significantly on the 5th, 10th, 15th , and 20th d after inoculation with the BY6 strain, and the fresh mass had the same performance.…”

Section: Discussionmentioning

confidence: 97%

Bacillus velezensis BY6 Promotes Growth of Poplar and Improves Resistance Contributing to the Biocontrol of Armillaria solidipes

et al. 2022

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“…In Korea, Kim et al 44 reported that B. velezensis has biocontrol activity against apple bitter rot. Also, B amyloliquefaciens AW3 causes mycelial cell malformation, swelling, and distortion in the fungus Fusarium oxysporum 45 . According to the obtained data, the fungicidal activity of wood vinegar against the occurrence of charcoal-rot and late-wilt might be caused by a combination of its acidic nature and the presence of components like phenolic, polyphenolic compounds, and organic acids.…”

Section: Discussionmentioning

confidence: 99%

Management of sunflower charcoal-rot and maize late-wilt diseases using the aqueous extract of vermicompost (vermitea) and environmental-safe biochar derivative (wood vinegar)

Darwesh,

Elshahawy

2023

Sci Rep

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In Egypt, sunflower charcoal-rot caused by Macrophomina phaseolina and maize late-wilt caused by Magnaporthiopsis maydis are the most prevalent, and can lead to huge yield losses of both crops under epidemic conditions. In this study, the potential use of vermitea and wood vinegar for management of both diseases was investigated. Data revealed that, among the 17 bacterial strains obtained from vermitea, three strains named VCB-2, VCB-7 and VCB-11 were chosen for having the greatest in vitro inhibitory effect against M. phaseolina and M. maydis, with fungal inhibition values of 54.2; 61.7, 65.2; 74.0 and 57.1; 87.0% against both pathogens, respectively. These strains were identified as Bacillus amyloliquefaciens, Serratia marcescens and Bacillus velezensis, respectively. Wood vinegar significantly reduced the colony diameter of M. phaseolina and M. maydis in in vitro trials conducted on potato dextrose agar medium amended with the desired concentrations of 0.5, 1.0, 1.5, 2.0, and 2.5%. The efficiency increased with increasing wood vinegar concentration, and 2.0% was the most effective (100% suppression). Data from greenhouse experiments showed that the application of vermitea or wood vinegar tended to decrease the incidence (% dead plants) of sunflower charcoal-rot (by 61.1 and 66.7%) and maize late-wilt (by 70.6%). These treatments had positive impacts on the plant growth parameters, photosynthetic pigments and antioxidative enzymes of sunflower and maize plants. Data from field experiments showed that the application of vermitea or wood vinegar decreased the incidence of charcoal-rot (by 72.8 and 72.0%) and late-wilt (by 88.7 and 87.0%) as well as increased the production sunflower and maize plants.

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“…amyloliquefaciens AW3 is an example of a microorganism that prevents the rot caused by F. oxysporum Fox68 by priming P. davidiana × P. bolleana (PdPap) seedlings. Indeed, B. amyloliquefaciens AW3 stimulated the expression of PAL, PPO, SOD, CAT, SA-(PR1 and NPR1), JA-(MYC2 and JAR1) and auxin-related (MP, AUX1, and LAX2) genes in plants, thereby enhancing the natural resistance of poplars and being an eco-friendly biocontrol agent for this fungus [277]. Laccaria bicolor, which is a mycorrhizal fungus, affects the expression of a huge number of genes in the plant and protects it from infection by B. dothidea.…”

Section: Endophytesmentioning

confidence: 99%

Editing Metabolism, Sex, and Microbiome: How Can We Help Poplar Resist Pathogens?

Kovalev,

Gladysh,

Bogdanova

et al. 2024

IJMS

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Poplar (Populus) is a genus of woody plants of great economic value. Due to the growing economic importance of poplar, there is a need to ensure its stable growth by increasing its resistance to pathogens. Genetic engineering can create organisms with improved traits faster than traditional methods, and with the development of CRISPR/Cas-based genome editing systems, scientists have a new highly effective tool for creating valuable genotypes. In this review, we summarize the latest research data on poplar diseases, the biology of their pathogens and how these plants resist pathogens. In the final section, we propose to plant male or mixed poplar populations; consider the genes of the MLO group, transcription factors of the WRKY and MYB families and defensive proteins BbChit1, LJAMP2, MsrA2 and PtDef as the most promising targets for genetic engineering; and also pay attention to the possibility of microbiome engineering.

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Endophytes Bacillus amyloliquefaciens AW3 (CGMCC1.16683) improves the growth of Populus davidiana × Populus bolleana (PdPap) and induces its resistance to wilt disease by Fusarium oxysporum Fox68 (CFCC86068)

Cited by 8 publications

References 49 publications

Bacillus velezensis BY6 Promotes Growth of Poplar and Improves Resistance Contributing to the Biocontrol of Armillaria solidipes

Bacillus velezensis BY6 Promotes Growth of Poplar and Improves Resistance Contributing to the Biocontrol of Armillaria solidipes

Management of sunflower charcoal-rot and maize late-wilt diseases using the aqueous extract of vermicompost (vermitea) and environmental-safe biochar derivative (wood vinegar)

Editing Metabolism, Sex, and Microbiome: How Can We Help Poplar Resist Pathogens?

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