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中国植物病理学会2016年学术年会

作者：张小芳付丽娜 GU An-yu LI Xiao-lin 姬广海 Key Laboratory of Agriculture Biodiversity for Plant Disease Management under the Ministry of Education Yunnan Agricultural University Institute of Food Crop Research Yunnan academy of agricultural sciences

[Objective]The present experiment was conducted to screen out the most effective biological agents which could establish rapidly in the rhizosphere and leaves of rice and inhibit the growth of plant pathogenic bacteria,in order to provide reference for Biological control of bacterial leaf streak.[Methodology]The prevention and control test of rice bacterial leaf streak was conduted in Ruili city of Dehong prefecture and Mengwang township of Jinghong city in Yunnan province with 10 sifted-out strains of bio-control *** different concentrations of bacteria suspension on the leaves of the rice plant,respectively after 3 weeks,to measure the control efficiency of the 10 strains of bio-control bacteria on bacterial leaf streak in two test points.[Results]The field trials reveal that the biocontrol efficacy of L6(the bacterial suspension of Lysobacter antibioticus L6) is the highest and most prominent reaches to 72.00%;the biocontrol efficacies of Phenazino- 1- carboxylic acid in the two test points are approximate,both near to 71.00%;the biocontrol efficacies of chemical pesticide Ye Banning are a little different,the biocontrol efficacy is 85.9%in Mengwang township,while it is 66.7%in Ruili *** agents compared with the pesticides,the biocontrol efficacies of chemical pesticide Ye Banning and Ye Qingshuang,the same effective components are "Bismerthiazol",are both near to 64.3%.[Conclusion]In consequence,this research showed that strain L6 had better control effect on bacterial leaf streak,equally,optimal concentration of 3×10 cfu/*** is of great potential to be a biocontrol agents in suppressing bacterial leaf streak disease.

关键词： Bacterial leaf streak biocontrol agents biocontrol efficacy

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Actinobacteria-enhanced plant growth, nutrient acquisition, and crop protection:Advances in soil, plant, and microbial multifactorial interactions

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Pedosphere 2022年第1期32卷 149-170页

作者： Debasis MITRA Rittick MONDAL Bahman KHOSHRU Ansuman SENAPATI T.K.RADHA Bhaswatimayee MAHAKUR Navendra UNIYAL Ei Mon MYO Hanane BOUTAJ Beatriz Elena GUERRA SIERRA Periyasamy PANNEERSELVAM Arakalagud Nanjundaiah GANESHAMURTHY Snežana ANÐELKOVIĆ Tanja VASIĆ Anju RANI Subhadeep DUTTA Pradeep K.DAS MOHAPATRA Department of Microbiology Raiganj UniversityRaiganjWest Bengal 733134India Department of Sericulture Raiganj UniversityRaiganjWest Bengal 733134India Department of Soil Science Faculty of AgricultureUniversity of TabrizTabriz 51664Iran Crop Production Division Indian Council of Agricultural Research(ICAR)National Rice Research InstituteCuttackOdisha 753006India Division of Soil Science and Agricultural Chemistry ICAR Indian Institute of Horticultural ResearchBengaluruKarnataka 560089India Department of Botany and Biotechnology Ravenshaw UniversityCuttackOdisha 753003India Genetics and Tree Propagation Division Forest Research InstituteUttarakhand 248003India Biotechnology Research Department Department of Research and InnovationMinistry of EducationKyaukse 05151Myanmar Laboratory of Biotechnology and Molecular Bioengineering Faculty of Sciences and TechnologyCadi Ayyad UniversityMarrakesh 40000Morocco Universidad de Santander Facultad de Ciencias Exactas Naturales y AgropecuariasGrupoMicrobiotaCampus Universitario Lagos del CaciqueBucaramanga 680002Colombia Institute for Forage Crops Kruševac 37251Republic of Serbia Plant Protection Faculty of AgricultureUniversity of NišKosančićeva 4Kruševac 37000Republic of Serbia Department of Life Sciences Graphic Era(Deemed to be University)DehradunUttarakhand 248002India Professor A.K.Bothra Environment Conservation Centre Raiganj UniversityRaiganjWest Bengal 733134India

Agricultural areas of land are deteriorating every day owing to population increase, rapid urbanization, and industrialization. To feed today’s huge populations, increased crop production is required from smaller areas, which warrants the continuous application of high doses of inorganic fertilizers to agricultural land. These cause damage to soil health and, therefore, nutrient imbalance conditions in arable soils. Under these conditions, the benefits of microbial inoculants (such as Actinobacteria) as replacements for harmful chemicals and promoting ecofriendly sustainable farming practices have been made clear through recent technological advances. There are multifunctional traits involved in the production of different types of bioactive compounds responsible for plant growth promotion, and the biocontrol of phytopathogens has reduced the use of chemical fertilizers and pesticides. There are some well-known groups of nitrogen-fixing Actinobacteria, such as Frankia, which undergo mutualism with plants and offer enhanced symbiotic *** addition to nitrogen fixation, increasing availability of major plant nutrients in soil due to the solubilization of immobilized forms of phosphorus and potassium compounds, production of phytohormones, such as indole-3-acetic acid, indole-3-pyruvic acid, gibberellins, and cytokinins, improving organic matter decomposition by releasing cellulases, xylanase, glucanases, lipases, and proteases, and suppression of soil-borne pathogens by the production of siderophores, ammonia, hydrogen cyanide, and chitinase are important features of Actinobacteria useful for combating biotic and abiotic stresses in *** positive influence of Actinobacteria on soil fertility and plant health has motivated us to compile this review of important findings associated with sustaining plant productivity in the long run.

关键词： biocontrol agents microbial inoculant metabolites mitrogen fixation plant growth promoters sustainable agriculture

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Metabolites Composition of Bacillus subtilis HussainT-AMU Determined by LC-MS and Their Effect on Fusarium Dry Rot of Potato Seed Tuber

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Phyton-International Journal of Experimental Botany 2023年第3期92卷 783-799页

作者： Touseef Hussain Abrar A.Khan Heba I.Mohamed Plant Pathology and Nematology Section Department of BotanyAligarh Muslim UniversityAligarhIndia Biological and Geological Sciences Department Faculty of EducationAin Shams UniversityCairoEgypt

Fusarium dry rot is considered to be the most critical soilborne and postharvest disease that damages potato tubers worldwide when they are stored for a long *** study was performed to demonstrate the effect of crude extract,culture filtrate,and cell suspension obtained from the bacterium Bacillus subtilis Hussain T-AMU,on the net house and *** oil-contaminated soil,through the serial dilution method,biosurfactant bacteria were isolated on nutrient agar *** isolate and screen the prospective biosurfactant strain,various biosurfactant screening methods were *** protocols were carried out for morphological,molecular,and chemical *** disease incidences were significantly decreased under net house and field conditions after treatment with biosurfactant extract(20%,70%),culture filtrate(23%,49%),and bacterial cell suspension(46%,27%),*** results indicate a significant effect of *** HussainT-AMU against Fusarium *** characterization of the partially purified extract by gas-chromatography indicated the existence of a high amount of methyl ester fatty *** quantitative analysis determined the presence of lipopeptide-surfactin,fengycin,and iturin in the biosurfactant *** electron microscopy revealed that morphological variation was revealed in the structure of stomata size in leaves and in the mycelia of the pathogen that was *** promising biocontrol agent can be a plausible option for further research and can also be used for the production of green biomolecules at an additional industrial level.

关键词： Biosurfactant biocontrol agents disease severity lipopeptide stomata

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A Systematic Review of Terrestrial Plant Invasion Mechanisms Mediated by Microbes and Restoration Implications

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American Journal of Plant Sciences 2022年第2期13卷 205-222页

作者： K. Dawkins J. Mendonca O. Sutherland N. Esiobu Microbial Biotech Lab Florida Atlantic University Boca Raton USA

Terrestrial invasive plant species continue to wreak havoc on a global economic and ecological scale. With the advent of climate change and pending future catastrophes, the spread of resilient invasive plants will only increase exponentially. Here, the search continues for a better understanding of the below-ground microbially driven mechanisms involved in plant invasion where other above-ground mechanisms have been exhausted. Microbes govern the world around us and interact with every living and non-living facet of the world. To reinforce the important underpinnings of the role of microorganisms in plant invasion, a systematic review of recently published articles was undertaken. Using the ScienceDirect database, five (5) search queries were used to generate 1221 research articles. After a two-step reduction was made based on relevance of the articles, a final total of 59 articles were retrieved. An additional 18 relevant articles were also assessed through the PubMed database for analysis to account for other invasive plants. Thirty-seven (37) invasive species were investigated where soil physiochemical and microbial community structure changes were most prevalent (32% & 39% respectively) while enhanced mutualism, allelopathy and pathogen accumulation were reported less (16%, 10% & 3% respectively). In all invasive species assessed, the impact on plant invasion and inability of the native plants to compete was due to specific microbial associations of the invasive plant or disruption of the soil microbial community. This microbial community shift coincided with changes in physiochemical properties of the soil and the subsequent negative soil feedback for native plants. There is still an expanding potential for the use of biocontrol agents to aid restoration once the underpinnings of biotic resistance and enemy release are understood in a microbial and physiochemical context. The active and functional microbial community structure of the invasive plant rhizosphere

关键词： Invasive Plant Biotic Resistance biocontrol agents Enemy Release Restoration

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