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Melatonin and dopamine alleviate waterlogging stress in apples by recruiting beneficial endophytes to enhance physiological resilience

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Journal of Integrative Agriculture 2024年第7期23卷 2270-2291页

作者： Yang Cao Peihua Du Yuwei Shang Jiahao Ji Leiqing Tan Xue Zhang Jizhong Xu Bowen Liang College of Horticulture Hebei Agricultural UniversityBaoding 071001China

Melatonin and dopamine can potentially prevent waterlogging stress in apples.The current study investigated the mechanism by which melatonin and dopamine alleviate apple waterlogging stress.This study demonstrated that melatonin and dopamine alleviated waterlogging by removing reactive oxygen species(ROS),and that the nitric oxide(NO)content and nitrate reductase(NR)activity were significantly correlated.Melatonin and dopamine were also found to recruit different candidate beneficial endophytes(melatonin:Novosphingobium,Propionivibrio,and Cellvibrio;dopamine:Hydrogenophaga,Simplicispira,Methyloversatilis,Candidatus_Kaiserbacteria,and Humicola),and these endophytes were significantly and positively correlated with plant growth.Network analyses showed that melatonin and dopamine significantly affected the endophytic bacterial and fungal communities under waterlogging stress.The metabolomic results showed that melatonin and dopamine led to waterlogging resistance by upregulating the abundance of beneficial substances such as amino acids,flavonoids,coumarins,and organic acids.In addition,melatonin and dopamine regulated the physicochemical properties of the soil,which altered the endophyte community and affected plant growth.The co-occurrence network demonstrated close and complex relationships among endophytes,metabolites,soil,and the plants.Our results demonstrate that melatonin and dopamine alleviate waterlogging stress in apples by recruiting beneficial endophytes to enhance physiological resilience.This study provides new insights into how melatonin and dopamine alleviate stress and a theoretical basis for synergistic beneficial microbial resistance to waterlogging stress.

关键词： dopamine endophytes Malus hupehensis melatonin metabolomics waterlogging

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Effects of plants-associated microbiota on cultivation and quality of Chinese herbal medicines

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Chinese Herbal Medicines 2024年第2期16卷 190-203页

作者： Yue Ouyang Qiqing Cheng Chunsong Cheng Ziyu Tang Yufeng Huang Eyu Tan Shaofeng Ma Xinheng Lin Ying Xie Hua Zhou Guangdong Provincial Hospital of Chinese Medicine Guangdong Provincial Academy of Chinese Medical SciencesState Key Laboratory of Dampness Syndrome of Chinese MedicineSecond Affiliated Hospital of Guangzhou University of Chinese MedicineGuangdong-Hong Kong-Macao Joint Lab on Chinese Medicine and Immune Disease ResearchGuangzhou 510006China Faculty of Chinese Medicine Macao University of Science and TechnologyMacao 999078China School of Pharmacy Hubei University of Science and TechnologyXianning 437100China Key Laboratory of Plant Ex-situ Conservation and Research Center of Resource Plant Lushan Botanical GardenChinese Academy of SciencesJiujiang 332900China Jiangmen Wuyi Hospital of Traditional Chinese Medicine Jiangmen 529020China Joint Laboratory for Translational Cancer Research of Chinese Medicine Ministry of EducationGuangzhou University of Chinese MedicineGuangzhou 510006China

Microbial resource influences the life activities of medicinal plants from several perspectives.endophytes,rhizosphere microorganisms,and other environmental microorganisms play essential roles in medicinal plant growth and development,plant yield,and clinical efficacy.The microbiota can influence the biosynthesis of active compounds in medicinal plants by stimulating specific metabolic pathways.They induce host plants to improve their resistance to environmental stresses by accumulating secondary metabolites.Microorganisms can interact with their host plants to produce long-term,targeted selection results and improve their ability to adapt to the environment.Due to the interdependence and interaction between microorganisms and medicinal plants,Chinese herbal medicines(CHMs)quality is closely related to the associated microorganisms.This review summarizes the relationship between medicinal plants and their associated microorganisms,including their species,distribution,life activities,and metabolites.Microorganisms can aid in quality control,improve the efficacy of medicinal plants,and provide markers for identifying the origin and storage time of CHMs.Therefore,a comprehensive understanding of the relationship between microorganisms and medicinal plants will help to control the quality of CHMs from different perspectives.

关键词： Chinese herbal medicines endophytes environmental microorganisms microbiota rhizosphere microorganisms

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Endophytic Occupation in Nodules of Rhynchosia Plants from Semiarid Regions of Argentina

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Phyton-International Journal of Experimental Botany 2024年第6期93卷 1081-1099页

作者： Cinthia T.Lucero María de losÁ.Ruíz Fabiola Pagliero Carolina Castaño Mariela L.Ambrosino Graciela S.Lorda Facultad de Ciencias Exactas y Naturales Universidad Nacional de La PampaRuta Nacional 35km 330Santa RosaLa PampaCP6300Argentina INTA EEA Anguil“Ing.Agr.Guillermo Covas”Ruta Nacional 5 km 580AnguilLa PampaCC116326Argentina

Beneﬁcial microbes can improve soil health by promoting soil structure,nutrient cycling,and disease suppression.In addition,a wide array of rhizospheric microbes are responsible for producing metabolically active compounds including various types of plant growth regulators.So,microbial biodiversity studies could contribute to the improvement of agricultural practices in deprived areas,such as the Pampean semiarid region.The vast majority of studies conducted on endophytic microorganisms have focused on intensive crop legume species.In contrast,little attention has been paid to microorganisms of native legumes,whose ecology is not directly affected by human action.In this study,endophytic microorganisms isolated from root nodules of a selected native legume of the genus Rhynchosia were characterized.Viable isolates were studied with a focus on their plant growth-pro-moting rhizobacteria(PGPR)properties.Considering the edaphic characteristics of the Pampean semiarid region,the isolates obtained were evaluated for their ability to grow under three salt stress conditions(50,100,and 200 mM NaCl)and four different pH values(6,7,8,and 9).Based on their PGPR activities,the selected strains were phylogenetically grouped using BOX-PCR.The results showed great variability among the isolates in terms of the characteristics studied.Native legumes manifested a wide endophytic variability and remarkable perfor-mance in PGPR activities.We conclude that they could be used as potential bioinoculants for legume cultivation,an excellent alternative to the use of chemical fertilizers that currently pollute the environment.

关键词： Native strains endophytes PGPR native legumes stress

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endophytes as Producers of Peptides:An Overview About the Recently Discovered Peptides from Endophytic Microbes

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Natural Products and Bioprospecting 2014年第5期4卷 257-270页

作者： Muna Ali Abdalla Josphat C.Matasyoh Department of Food Science and Technology Faculty of AgricultureUniversity of Khartoum13314 ShambatKhartoum NorthSudan Institut fur Chemie/FG Organische Chemie Muller-Breslau-Str.1010623 BerlinGermany Department of Chemistry Egerton UniversityP.O.Box 536EgertonKenya

An endophyte is a fungus or bacterium that lives within a plant in a symbiotic relationship.Extensive colonization of the plant tissue by endophytes creates a barrier effect,where they outcompete and prevent pathogenic organisms from taking hold.This happens by producing secondary metabolites that inhibit the growth of the competitors or pathogens.In this way they play a very important role in the plant defence mechanisms.The metabolites produced by these endophytes fall within a wide range of classes of compounds that include peptides which are the focus of this review.Peptides are increasingly being selected for drug development because they are specific for their targets and have a higher degree of interactions.There have been quite a number of endophytic peptides reported in the recent past indicating that endophytes can be used for the production of peptide based drugs.Molecular screening for NRPS,which shows peptide producing capability,has also shown that endophytes are potential producers of peptides.The presence of NRPS also offers the possibility of genetic modifications which may generate peptides with high pharmacological activities.This review,therefore,aims to show the current status of peptides isolated from endophytic bacteria and fungi in the recent decade.endophytes as potential sources of peptides according to NRPS studies will also be discussed.

关键词： Peptides endophytes NRPS Bioactivities Genetic engineering

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Way to efficient microbial paclitaxel mass production

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Synthetic and Systems Biotechnology 2023年第4期8卷 673-681页

作者： Chenyue Li Yanli Qi Zhongke Sun Mengwan Jiang Chengwei Li School of Biological Engineering Henan University of TechnologyZhengzhou450001China Nanyang Institute of Medical Plant Technology and Industry Nanyang473005China School of Artificial Intelligence and Big Data Henan University of TechnologyZhengzhou450001China

The microbial synthesis of paclitaxel is attractive for its short-cycle,cost-effectiveness,and sustainability.However,low paclitaxel productivity,depleted capacity during subculture and storage,and unclear biosynthesis mechanisms restrain industrial microbial synthesis.Along with the isolation of various paclitaxel-producing microorganisms and the development of versatile molecular tools,tremendous promises for microbial paclitaxel synthesis have become increasingly prominent.In this review,we summarize the progress of microbial synthesis of paclitaxel in recent years,focusing on paclitaxel-producing endophytes and representative engineering microorganism hosts that were used as chassis for paclitaxel precursor synthesis.Numerous wide-type microbes can manufacture paclitaxel,and fermentation process optimization and strain improvement can greatly enhance the productivity.Engineered microbes can efficiently synthesize precursors of paclitaxel by introducing exogenous synthetic pathway.Mining paclitaxel synthetic pathways and genetic manipulation of endophytes will accelerate the construction of microbial cell factories,indefinitely contributing to paclitaxel mass production by microbes.This review emphasizes the potential and provides solutions for efficient microbial paclitaxel mass production.

关键词： Paclitaxel Microbial fermentation endophytes Process optimization Synthetic pathway

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endophytes and associated marine derived fungi—ecological and chemical perspectives

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Fungal Diversity 2012年第6期57卷 45-83页

作者： Abdessamad Debbab Amal H.Aly Peter Proksch Heinrich-Heine-Universität Düsseldorf Institut für Pharmazeutische Biologie und BiotechnologieUniversitätsstr.1Geb.26.2340225 DüsseldorfGermany

The potential of endophytes and algal or invertebrate associated marine derived fungi as promising sources of structurally unprecedented bioactive natural products is undeniable and continues to attract broad attention.This review highlights new bioactive fungal metabolites reported in 2011 until April 2012,as well as known compounds for which novel biological activities have been disclosed.All compounds are grouped according to their reported biological activities which include cytotoxic,anti-infective,as well as radical scavenging,enzyme inhibition,anti-fouling and anti-parasitic activities.Overall,178 fungal metabolites,including 138 new natural products are presented.Furthermore,new insights into fungal-host interaction,chemical communication,and chemo-ecological roles of fungal metabolites,as well as new strategies for bioprospecting are presented.

关键词： Fungi endophytes Associated marine fungi Bioactive metabolites Natural products Biosynthetic pathways

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Host niche, genotype, and field location shape the diversity and composition of the soybean microbiome

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Journal of Integrative Agriculture 2023年第8期22卷 2412-2425页

作者： YANG Hong-jun YE Wen-wu YU Ze SHEN Wei-liang LI Su-zhen WANG Xing CHEN Jia-jia WANG Yuan-chao ZHENG Xiao-bo Department of Plant Pathology Nanjing Agricultural UniversityNanjing 210095P.R.China Key Laboratory of Soybean Disease and Pest Control of Ministry of Agriculture and Rural Affairs Nanjing Agricultural UniversityNanjing210095P.R.China College of Agronomy and Horticulture Jiangsu Vocational College of Agriculture and ForestryZhenjiang 212400P.R.China Suzhou Academy of Agricultural Sciences Suzhou 234000P.R.China Jining Academy of Agricultural Sciences Jining 272131P.R.China Xuzhou Academy of Agricultural Sciences Xuzhou 221131P.R.China College of Landscape Architecture Jiangsu Vocational College of Agriculture and ForestryZhenjiang 212400P.R.China

Plant-associated microbes represent a key determinant of plant fitness through acquiring nutrients,promoting growth,and resisting to abiotic and biotic stresses.However,an extensive characterization of the bacterial and fungal microbiomes present in different plant compartments of soybean in field conditions has remained elusive.In this study,we investigated the effects of four niches(roots,stems,leaves,and pods),four genotypes(Andou 203,Hedou 12,Sanning 16,and Zhonghuang 13),and three field locations(Jining,Suzhou,and Xuzhou)on the diversity and composition of bacterial and fungal communities in soybean using 16S and internal transcribed spacer rRNA amplicon sequencing,respectively.The soybean microbiome significantly differed across organs.Host genotypes explained more variation in stem bacterial community composition and leaf fungal community composition.Field location significantly affected the composition of bacterial communities in all compartments and the effects were stronger in the root and stem than in the leaf and pod,whereas field location explained more variation in stem and leaf fungal community composition than in the root and pod.The relative abundances of potential soybean fungal pathogens also differed among host organs and genotypes,reflecting the niches of these microbes in the host and probably their compatibility to the host genotypes.Systematic profiling of the microbiome composition and diversity will aid the development of plant protection technologies to benefit soybean health.

关键词： microbiome soybean plant pathogen endophytes host niche genotype field location

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Diversity of endophytes across the soil-plant continuum for Atriplex spp. in arid environments

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Journal of Arid Land 2016年第2期8卷 241-253页

作者： Mohammad E TAHTAMOUNI Sa'eb KHRESAT Mary LUCERO Jesus SIGALA Adrian UNC New Mexico State University Department of Plant & Environmental Sciences Las Cruces NM 88003 USA Jordan University of Science and Technology Department of Natural Resources and Environment Irbid 22110 Jordan Seco Spice Chamberino NM 88027 USA Boreal Ecosystems Research Initiative Memorial University of Newfoundland Corner Brook A2H 5G4 Canada University of Leeds School of Geography Leeds LS2 9JT UK

endophytes are hypothesized to be transferred across the soil-plant continuum, suggesting both the transfers of endophytes from environment to plant and from plant to soil. To verify this hypothesis and to assess the role of locality, we evaluated the similarity of microbial communities commonly found both in soils and endophytic communities in three arid regions, i.e. the Jornada LTER （Long Term Ecological Research） site in New Mexico, USA, and the research station of Jordan University of Science and Technology （JUST） and Khanasd research station in Badia region of Jordan. Rhizosphere and non-rhizosphere soils, leaves and seeds of Atriplex spp. were sampled. Diversity and distribution of bacteria and fungi across the soil-plant continuums were assessed by tag-encoded FLX amplicon pyrosequencing and sequence alignment. Of the total bacterial OTUs （operational taxonomic units）, 0.17% in Khanasri research station, 0.16% in research station of JUST, and 0.42% in Jornada LTER site were commonly found across all the plant and soil compartments. The same was true for fungi in two regions, i.e. 1.56% in research station of JUST and 0.86% in Jornada LTER site. However, in Khanasri research station, 12.08% of total fungi OTUs were found in at least one soil compartment and one plant compartment. Putative Arthrobacter, Sporosarcina, Cladosporium and members of Proteobacteria and Actinobacteria were found across all the soil-plant continuums. Ascomycota, mainly including Didymellaceae, Pleosporaceae and Davidiellaceae were present across all the soil-plant continuums. Microbial communities in two regions of Jordan were similar to each other, but both of them were different from the Jornada LTER site of USA. SIMPER （similarity percentage） analysis of bacterial and fungal taxa for both soil and endophyte communities revealed that dissimilarities of two bacterial genera （Arthrobacter and Sporosarcina） and two fungal genera （Cladosporium and Alternaria） are very high, so they play key roles in the soil-plant continuums. A weigh

关键词： endophytes microbial diversities soil-plant continuum pyrosequencing Atriplex spp.

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Anti‑leishmanial and Anti‑inflammatory Agents from endophytes:A Review

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Natural Products and Bioprospecting 2019年第5期9卷 311-328页

作者： Rufin Marie Kouipou Toghueo Antimicrobial and Biocontrol Agents Unit(AmBcAU) Laboratory for Phytobiochemistry and Medicinal Plants StudiesDepartment of BiochemistryFaculty of ScienceUniversity of YaoundéIP.O.Box 812YaoundéCameroon

Leishmaniases and chronic inflammatory diseases are the cause of millions of deaths in the world each year.The treatment of leishmaniasis is facing serious drawbacks particularly due to the limited number of effective medicines,the resistance,and the toxicity of available drugs.On the other hand,many drugs are used for the management of inflammatory disorders.However,the most commonly prescribed although efficient is highly toxic with multiples side effects.New leads compounds for the development of new anti-leishmanial and anti-inflammatory drugs are needed.Over the past decade,several studies on the potential of endophytes to produce bioactive metabolites have been reported.We are presenting in the present review the status of research from 2000 to 2019 on the anti-leishmanial and anti-inflammatory metabolites isolated from endophytes from diverse habitats.An emphasis was put on existing gaps in the literature to inspire and guide future investigations.We hope that this review will help accelerate the drug discovery against leishmaniases and inflammation-associated disorders.

关键词： Anti-leishmanial Anti-inflammatory endophytes Bioactive metabolites

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Characterization of Endophytic Microorganisms of Rice(Oryza sativa L.)Potentials for Blast Disease Biocontrol and Plant Growth Promoting Agents

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Phyton-International Journal of Experimental Botany 2023年第11期92卷 3021-3041页

作者： Shugufta Parveen Fayaz A.Mohiddin M.Ashraf Bhat Zahoor Ahmed Baba Fehim Jeelani M.Anwar Bhat Sajad Un Nabi Burhan Hamid Saba Bandey Farhanaz Rasool Zakir Amin Ibrahim Al-Ashkar Muhammad Adnan Ayman El Sabagh Division of Plant Pathology Faculty of AgricultureSher-e-Kashmir University of Agricultural Sciences and Technology of KashmirWaduraIndia Mountain Research Centre for Field Crops SKUAST-KashmirKhudwaniIndia Division of Genetics and Plant Breeding Faculty of AgricultureSher-e-Kashmir University of Agricultural Sciences and Technology of KashmirWaduraIndia Division of Microbiology Faculty of AgricultureSher-e-Kashmir University of Agricultural Sciences and Technology of KashmirWaduraIndia Division of Statistics Faculty of AgricultureSher-e-Kashmir University of Agricultural Sciences and Technology of KashmirWaduraIndia Division of Agronomy Faculty of AgricultureSher-e-Kashmir University of Agricultural Sciences and Technology of KashmirWaduraIndia Indian Council of Agricultural Research-Central institute of Temperate Horticulture(ICAR-CITH) Old AirportRangrethSrinagarIndia Division of Plant Pathology Faculty of HorticultureSher-e-Kashmir University of Agricultural Sciences and Technology of KashmirShalimarIndia Directorate of Extension Sher-e-Kashmir University of Agricultural Sciences and Technology of KashmirShalimarIndia Department of Plant Production College of Food and Agriculture SciencesKing Saud UniversityRiyadhSaudi Arabia College of Food Agricultural and Environmental SciencesThe Ohio State UniversityColumbusOHUSA Department of Agronomy Faculty of AgricultureUniversity of KafrelsheikhKafrelsheikhEgypt

One hundred twenty-five endophytic microorganisms were isolated from the roots,stems,and leaves of four prominent rice cultivars growing in temperate regions.Their potential to combat rice blast disease and promote plant growth was investigated.The dual culture tests highlighted the strong antagonistic activity of five fungal(ranging from 89%–70%)and five bacterial(72%–61%)endophytes.Subsequent examination focused on volatile compounds produced by selected isolates to counter the blast pathogen.Among these,the highest chitinase(13.76μg mL−1)and siderophore(56.64%),was exhibited by Aspergillus flavus,and the highest HCN production was shown by Stenotrophomonas maltophilia(36.15μM mL−1).In terms of growth promotion traits,Aspergillus flavus and Enterobacter cloacae excelled in activities viz,phosphorous solubilization,ammonia production,auxin and gibberellic acid production,and nitrogen fixation.The Identity of these endophytes was confirmed through molecular analysis as Trichoderma afroharzianum,Trichoderma harzianum,Penicillium rubens,Aspergillus flavus,Stenotrophomonas rhizophila,Stenotrophomonas maltophilia,Bacillus cereus,Enterobacter cloacae,and Bacillus licheniformis.Under greenhouse conditions,the highest disease control was shown by isolate Bacillus licheniformis and A.flavus with an inhibition of 79%,followed by S.rhizophila(77%)and T.afroharzianum(73%).The overall results of this study showed that Bacillus licheniformis and Stenotrophomonas rhizophila have great potential to be used as bio-stimulant and biocontrol agents to manage rice blast disease.

关键词： endophytes phylogeny antagonistic activity Pyricularia phytohormones

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