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AntonievanLeeuwenhoek(2015)108:267–289 DOI10.1007/s10482-015-0502-7 REVIEW PAPER Endophytic actinobacteria of medicinal plants: diversity and bioactivity . . . Patrycja Golinska Magdalena Wypij Gauravi Agarkar . . Dnyaneshwar Rathod Hanna Dahm Mahendra Rai Received:17April2015/Accepted:4June2015/Publishedonline:21June2015 (cid:2)TheAuthor(s)2015.ThisarticleispublishedwithopenaccessatSpringerlink.com Abstract Endophytes are the microorganisms that Introduction exist inside the plant tissues without having any negative impact on the host plant. Medicinal plants Many types of microbial population such as bacteria constitutethehugediversityofendophyticactinobac- and fungi have been found to be associated with the teriaofeconomicalimportance.Thesemicrobeshave internal tissues of plant as endophytes. The term huge potential to synthesis of numerous novel com- endophyte was coined by De Bary (1866), which pounds that can be exploited in pharmaceutical, involves the existence of microorganisms inside the agricultural and other industries. It is of prime infested plant tissues without having negative effects importance to focus the present research on practical onhostplant(SchulzandBoyle2006).Almostallthe utilizationofthismicrobialgroupinordertofindout plantshavebeenfoundtobeinfestedwithoneormore the solutions to the problems related to health, endophytes (Petrini et al. 1992). The microbes are environmentandagriculture.Anextensivecharacter- producersofgrowthpromotingmetabolites,insectand izationofdiversepopulationofendophyticactinobac- pest repellents, antimicrobials against plant patho- teria associated with medicinal plants can provide a gens, protectors in stress conditions and many more greater insight into the plant-endophyte interactions (Ryaetal.2007;Stanieketal.2008;Raietal.2014a, andevolutionofmutualism.Inthepresentreview,we b).Theyalsopossessthepotentialtoproduceunique havediscussedthediversityofendophyticactinobac- secondary metabolites, which can be exploited in teria of from medicinal plants their multiple pharmaceutical, agricultural and other industries. bioactivities. Thus, there is a growing interest of researchers in bioprospecting of endophytic microbial communities Keywords Actinobacteria(cid:2)Antimicrobialactivity(cid:2) inhabitingtheplantsfromvariousecosystems. Bioactivecompounds(cid:2)Endophytes(cid:2)Medicinalplants Actinobacteria are Gram-positive typically fila- mentousbacteria,andisamajorphyluminthedomain Bacteria (Ludwig and Klenk 2005). Actinobacteria are widely distributed in both terrestrial and aquatic P.Golinska(&)(cid:2)M.Wypij(cid:2)D.Rathod(cid:2)H.Dahm ecosystems.Theyplayimportantrolesindecomposi- DepartmentofMicrobiology,NicolausCopernicus University,87100Torun,Poland tion of complex materials from dead plants, animals, e-mail:[email protected] algae and fungi and in recycling of the nutrients resulting in humus formation (Sharma 2014). Acti- G.Agarkar(cid:2)D.Rathod(cid:2)M.Rai nobacteria are an important and a large group of soil DepartmentofBiotechnology,SGBAmravatiUniversity, Amravati444602,Maharashtra,India 123 268 AntonievanLeeuwenhoek(2015)108:267–289 microbes with high potential of producing different tissue,geographicalandhabitatdistribution,sampling bioactive metabolites including antimicrobial, anti- season,surfacesterilants,selectivemediaandculture cancer and other pharmaceutical compounds (Fiedler conditions(Hallmann2001;Gaieroetal.2013). et al. 2008; Schulz et al. 2009). These microbes have In general, the isolation protocol involves the beenthelargestproducersofdifferentantibioticssince collection of plant parts such as leaves, stem, roots thediscoveryofPenicillinin1928andprovidedthevast thatshouldbeprocessedfreshlyorstoredat4 (cid:3)Cuntil diversity of antibiotics against many deadly diseases. isolation within 24 h. These explants are washed in Total number of bioactive metabolites produced by running tap water to remove adhered epiphytes, soil microorganismsarearound23,000outofwhich10,000 debris or dust particles on the surface, followed by (45 % of all bioactive metabolites) are produced by surface sterilization using one or more different actinobacteriaaloneandamongthisgroupofbacteria, surface sterilizing agents. The most commonly used 7600 (76 %) compounds are reported from a single surfacesterilantsincludeethanolandastrongoxidant genusStreptomyces(Berdy2012).Thissignifiestheir orgeneraldisinfectantlikehouseholdbleach(NaOCl) primeimportanceintheworldofpharmaceuticals. with 2–5 % (w/v), available chlorine (for 2–4 min). It is well known that the medicinal plants are the Qin et al. (2008b) and Dochhil et al. (2013) applied rich sources of precious bioactive compounds. As a combinationof5 %sodiumchlorate(NaClO ),2.5 % 3 consequence of long term association of endophytes sodiumthiosulfate(Na S O ),75 %ethanoland10 % 2 2 3 with such plants, the former may also participate in sodiumbicarbonate(NaHCO )assterilizingagentsto 3 metabolic pathways and enhance its own natural inhibitthegrowthoffungalendophytes.Thestrength bioactivity or may gain some genetic information to ofsterilizingchemicalsdependsonpermeabilityofthe producespecificbiologicallyactivecompoundsimilar sample. Otherwise, the internal tissues will be steril- to the host plant (Stierle et al. 1993; Eyberger et al. ized(Hallmannetal.2006).Alltheexplantsarefinally 2006;Mitchelletal.2010;Kumaretal.2013;Chithra rinsed with sterile distilled water, divided into small et al. 2014; Rai et al. 2014a, b). Therefore, the fragments (1 cm for steam or roots and 1 cm 2 for endophytes isolated from medicinal plants are of leaves)andinoculatedonappropriateagarmedium.In immensesignificance. anothermethod,thesurfacesterilizedplanttissuesare The beneficial interactions of endophytic acti- macerated and thoroughly homogenized with phos- nobacteria with plants are being considered as an phate buffer or other suitable liquid medium. This important area of research. These endophytic acti- suspension is serially diluted as 10-1 to 10-5 and nobacteria are attractive source of novel bioactive spreadonagarmediuminordertoobtainendophytic compounds and therefore, many research groups are actinobacteria. The media are supplemented with involved in the study of their bioactivities and antifungal antibiotics such as nystatin and cyclohex- industrialapplications.Thepresentreviewisfocused imide(50or100 lg/ml)tosuppressthefungalgrowth. ontheadvancesinendophyticactinobacteriaisolated After incubation at 26 ± 2 (cid:3)C for 15–30 days, indi- from medicinal plants including their diversity and vidualcolonieswithcharacteristicactinomycetemor- broad-spectrumbioactivities. phology emerging out from the plant tissue are isolated.Thepureculturesoftheisolatesareobtained bystreakingonfreshmediaplates.Theefficacyofthe Isolationofendophyticactinobacteria surface sterilization method, resulting from lack of microbialgrowth,canbeauthenticatedbyinoculating Different methods have been used by researchers for thelastwashingwaterintothesamemediaplates. isolationofendophyticactinobacteria.Takahashiand Varioustypesofgrowthmediahavebeendescribed Omura (2003) emphasized that the diversity of by the authors for the isolation of endophytic actinobacteria depend mainly on the methods of actinobacteria such as starch casein (Ku¨ster and isolation. The most frequently employed method for Williams 1964), starch casein nitrate (SCNA), acti- their detection and enumeration involves isolation nomycetes isolation, soybean (Williams and Davies from surface-sterilized host plant tissue. Isolation of 1965), chitin-vitamin B (Hayakawa and Nonomura endophytic actinobacteria depend on various factors, 1987),tapwater-yeastextract(TWYE;Crawfordetal. which include- host plant species, age and type of 1993) agars and humic acid vitamin B (HV), yeast 123 AntonievanLeeuwenhoek(2015)108:267–289 269 extract casamino acid (YECA), synthetic (Mincer leaves (Qin et al. 2009; Gangwar et al. 2014). The etal.2002),modifiedGausse(Ivantiskayaetal.1978) woody plants conferred far greater diversity of acti- andglycine–glycerol(Ku¨ster1959)media.Zhaoetal. nobacteria in comparison to herbaceous plants. The (2011)alsounderlined the need ofusing widerrange high rate of occurrence of actinobacteria in roots as ofisolationmethodstoacquiremoreknowledgeabout compared to other tissues is very common. This species diversity of actinobacteria within medicinal underlines the fact that the actinobacteria are natural plants.AmodifiedmethodemployedbyMachavariani dwellers of soil that easily come in contact with the etal.(2014)describesthepre-treatmentofleaveswith rootsofplantsandmayformthesymbioticassociation solutions of heteroauxin and zircon, which helped to with them by entering the plant tissues. The results isolateandincreasethenumbersofrareactinobacteria obtained by Nimnoi et al. (2010) suggested that frommedicinalplants. different locations within the plant also differ in the diversity of actinomycete flora. Strobel and Daisy (2003)reportedthatthegreaterdiversityofendophytes Diversityofendophyticactinobacteriainmedicinal is probable to occur in the tropical and temperate plants regions. Du et al. (2013a) analyzed the endophytic diversityof37medicinalplantsandreported600 acti- Current identification and classification of actinobac- nobacteria belonging to 34 genera and 7 unknown teria are based a polyphasic approach, comprising taxa. The authors depicted that there was no direct morphological, physiological and molecular studies relationshipbetweenhostplantsandtheirendophytic (Goodfellowetal.2012)basedoneachtaxonshouldbe flora regarding the utilization of sole carbon source, described and differentiated from related taxa. The fermentationofcarbonsourcesforproductionofacids sequencing of highly conserved macromolecules, and enzymes, rather the physiological characteristics notably 16S rRNA genes, has provided valuable data ofendophyticisolateswererelatedtothegeographical for constructing phylogenies at and above the genus distributionoftheirhostplants. level (Ludwig and Klenk 2005). The DNA: DNA The measures of functional biodiversity may be relatedness, molecular fingerprinting and phenotypic more reliable and powerful than the taxonomic techniquesaremethodsofchoicefordelineatingtaxaat measures in order to recognize mechanistic basis of and below the rank of species (Rossello´-Mora and diversity and its effects on the plant-endophyte Amann 2001). Distinguishing phenotypic differences interactions(Parrentetal.2010).Speciesdistribution arerequiredforthedescriptionofanewspecies(Wayne and biological diversity of endophytic actinobacteria et al. 1987). Exploring the diversity of endophytic of medicinal plants are extensively influenced by actinobacteria is indispensable for screening of bene- ecologicalenvironment(Houetal.2009).El-Shatoury ficialstrainsandunderstandingtheirecologicalniche. et al. (2013) interpreted that the plant species can be Endophyticactinobacteriaareabletoassociatewith separated into three clusters representing high, mod- their host at a very early stage of the plant develop- erate and low endophytic diversity on the basis of ment (Hasegawa et al. 2006). Minamiyama et al. genericdiversityanalysisofendophytes.Theauthors (2003) noticed in SEM studies that mycelia of also reported that the endophytes represent high Streptomycesgalbus,whichwasspreadonthesurface functional diversity, based on forty four different of the tissue-culture medium in which rhododendron traitsincludingcatabolicandplantgrowthpromotion seedlings were growing, grew on leaf surfaces and traitsandsuchtraitsmaycharacterizeakeycriteriafor enteredintotheleaftissuesviastomata.Further,they successful habitation of endophytes within the endo- also observed that the internal mycelia grew out of sphere. Furthermore, the stress-tolerance traits were stomata after internal multiplication within host more predictive measure of functional diversity of leaves. Moreover, the authors observed that within endophyticactinobacteria(El-Shatouryetal.2013). host leaves, hyphae of S. galbus were present Hasegawa et al. (1978) reported a new genus of individually or in colonies in intercellular spaces but actinobacteria namely Actinosynnema, from a grass notinsideepidermalormesophyllcells. blade, which was probably the first report of an Themaximumendophyticactinobacteriahavebeen actinomycete of plant origin. A comprehensive liter- recovered from roots followed by stems and least in ature survey has revealed the huge diversity of 123 270 AntonievanLeeuwenhoek(2015)108:267–289 endophyticactinobacteriaisolatedfrominteriortissues In2012b,Qinandco-workersstudiedthediversity ofstem,leavesandrootsofmedicinalplants(Table 1). of endophytic actinobacteria recovered from root, Taechowisan et al. (2003) studied the diversity of stem and leaf tissues of Maytenus austroyunnanens actinobacteria residing in medicinal plants based on which was collected from tropical rainforest in their morphology and the amino acid composition of Xishuangbanna, China. Later the authors concluded thewhole-cellextractandanalysedthepercentageof thediversityofisolatesbycombinationofcultivation endophytic actinobacteria recovered from different and culture-independent analysis and based on 16S explants:64 %isolatesfromroots,29 %fromleaves, rRNA gene sequencing. Further by using different and6 %fromstemsof36differentplantspecies. selective isolation media and methods total of 312 JansoandCarter(2010)alsoassessedthediversity actinobacteriawereisolatedfromaboveplantswhich of endophytic actinobacteria, including those from were affiliated with the order Actinomycetales (dis- medicinal plants, albeit by ribotyping with Pvu II tributed into 21 genera). Based on a protocol for restriction enzyme to digest the genomic DNA. endophytes enrichment, three 16S rRNA gene clone Ribotypes were then compared to each other using librarieswere constructedand 84 distinct operational appropriate software (Janso and Carter 2010). The taxonomic units were identified and they distributed authors have found that 85 % of 123 isolates studied among the orders Actinomycetales and Acidimicro- were determinedto beunique at the strain level.The biales,includingeightsubordersandatleast38genera isolateswereclassifiedtosixfamiliesand17different with a number of rare actinobacteria genera. More- genera. Streptomyces accounts for the dominant over, six genera from the order Actinomycetales and genus, which is most commonly isolated as endo- uncultured clones from Acidimicrobiales were found phyticactinomycete(Qinetal.2009;Zhaoetal.2011; tobeunknownandreportedasfirsttime endophytes. Shutsrirung et al. 2014; Gangwar et al. 2014) while This study confirms abundant endophytic actinobac- others include genera such as Micromonospora, terialconsortiumintropicalrainforestnativeplantand Actinopolyspora,Saccharopolyspora,Nocardia,Oer- suggests that this special habitat still represents an skovia, Nonomuraea, Streptoverticillium, Microbis- underexplored reservoir of diverse and novel acti- pora, Streptosporangium, Promicromonospora and nobacteria of potential interest for bioactive com- Rhodococcus (Verma et al. 2009; Zhao et al. 2011). poundsdiscovery. Some rare actinobacteria like Dietzia, Blastococcus, Dactylosporangium, Actinocorallia, Jiangella, Promicromonospora, Oerskovia, Microtetraspora Bioactivitiesofendophyticactinobacteria and Intrasporangium were also reported as endo- phytes (Qin et al. 2009; Zhao et al. 2011; Qin et al. The plant endosphere consists of a large variety of 2012b;El-Shatouryetal.2013).Anovelhalotolerant microbial endophytes, which constitute a complex actinomycete was isolated from a salt marsh plant micro-ecosystem (El-Shatoury et al. 2013). A vast Dendranthema indicum collected from the coastal diversity of secondary metabolites in actinobacteria region of China (Zhang et al. 2013). New species of may occur due to the natural adaptations to environ- endophytic actinobacteria such as Rhodococcus cer- ment, as apart ofcompetition for common resources cidiphylli and Saccharopolyspora endophytica were suchasplantmatterinsoil.Ithasbeenobservedthat isolated from leaf of Cercidiphyllum japonicum (Li thegenesresponsiblefortheproductionofindividual et al. 2008) and root of Maytenus austroyunnanensis secondary metabolites were found almost always (Qin et al. 2008a), respectively. Du et al. (2013b) located as a cluster in the genome and referred to as proposed a new genus and species, Allonocardiopsis biosynthetic gene clusters (Doroghazi and Metcalf opalescensgen.nov.,sp.nov.,basedonthepolyphasic 2013).Although,there isnodataavailableaboutfull taxonomic study, within the suborder Streptospo- genomesequencingonactinobacteriafrommedicinal rangineae.Wangetal.(2008)studiedthediversityof plants it has been known, that whole genomes of uncultured microbes associated with medicinal plant Streptomyces sp. and non-Streptomyces non-endo- Mallotusnudiflorusandconcludedthatactinobacteria phyticactinobacteriasuchasStreptomycesavermitilis were the most dominant microbes, covering about MA-4680 (O¯mura et al. 2001; Ikeda et al. 2003) and 37.7 %ofwholeendophyticisolates. StreptomycescoelicolorA(3)2(Bentleyetal.2002)as 123 AntonievanLeeuwenhoek(2015)108:267–289 271 09) kly 0 d Reference Akshathaetal.(2014) Bascom-Slacketal.(2 Bianetal.(2012b) Bianetal.(2012a) Carusoetal.(2000) Castilloetal.(2002) Castilloetal.(2003) Castilloetal.(2006) Chenetal.(2009) Chenetal.(2011) Contietal.(2012) Dochhiletal.(2013) Duetal.(2013b) El-GendyandEL-Bon(2010) n, ari m u o c yl n e h D ylp d 5 x Bioactivecompounds ND ND ND ND Paclitaxel MunumbicinsA,B,Can Kakadumycins MunumbicinsE-4andE- ND ND ND Indoleaceticacid(IAA) ND Vanillin, p5,7-dimethoxy-4--metho Saadamycin e c n e nts Tissue Stem,leaf,infloresc Stem ND Root Wood/innercorticaltissues Stem Stem ND Innertissue Rootnodules Leaf Root,stem,leaf Fruit Innerhealthytissue a pl isolatedfrommedicinal Hostplant Rauwolfiadensiflora Siparunacrassifolia, Calycophyllumacreanum, Capironadecorticans, Ocotealongifolia, Aspidospermasp, Palicourealongifolia, Monsteraspruceana, Crotonlechleri, Cantuabuxifolia, Banisteriopsiscaapi, Iryantheralaevis, Euchariscyaneosperma Limoniumsinensis Curcumaphaeocaulis Taxusbaccata Kennedianigriscans Grevilleapteridifolia Kennedianigriscans Lobeliaclavatum Elaeagnusangustifolia Spermacoceverticillata Centellaasiatica Loniceramaackii Aplysinafistularis a eri ct a Table1Endophyticactinob Speciesofactinomycetes Streptomyceslongisporoflavus, Streptomycessp. Amycolatopsissp., Micromonosporasp., Streptomycessp. Kineococcusendophytica Streptomycesphytohabitans Kitasatosporasp. Streptomycessp.NRRL30562 Streptomycessp.NRRL30566 Streptomycessp.NRRL30562 Pseudonocardiaendophytica Micromonosporasp., Nonomuraeasp., Planotetrasporsp., Pseudonocardiasp. Microbisporasp. Streptomycessp. Allonocardiopsisopalescens Streptomycessp.Hedaya48 123 272 AntonievanLeeuwenhoek(2015)108:267–289 6) 9) (200 (200 011) 014) 06) Reference El-Shatouryetal. El-Shatouryetal. Ezraetal.(2004) Gangwaretal.(2 Gangwaretal.(2 Igarashi(2004) Igarashietal.(20 n, erophore, hore, Novobioci Bioactivecompounds ND Siderophores,Chitinase Coronamycin ND Hydroxamate-typeofsid Catechol-typeofsiderop Indoleaceticacid(IAA) Fistupyrone 07-Demethylnovobiocin, 005-demethylnovobiocin, 6-Prenylindole, Anicemycin PteridicacidsAandB Clethramycin CedarmycinsAandB Pterocidin s part eaf eaf erial em,l em,l Tissue Greena ND Stem Root,st Root,st Leaf Stem ND Twig ND a Hostplant Artemisiaherbaalba-, Echinopsspinosus, Menthalongifolia, Ballotaundulate Achilleafragrantissim Monsterasp. Aloevera, Mentha, Ocimumsanctum Aloevera, Menthaarvensis, Ocimumsanctum Alliumfistulosum Pteridiumaquilinum ND Cryptomeriajaponica ND P- P- P- T T T Table1continued Speciesofactinomycetes Streptomycessp. Kibdelosporangiumsp., Kitasatosporiasp., Nocardiasp., Nocardioidessp., Promicromonosporasp. Pseudonocardiasp., Streptomycessp. Streptomycessp.MSU-2110 Actinopolysporasp., Micromonosporasp., Saccharopolysporasp., Streptomycessp. Actinopolysporasp., Micromonosporasp., Saccharopolysporasp., Streptomycessp. Streptomycessp.TP-A0569, StreptomyceshygroscopicusA0451, StreptomyceshygroscopicusA0326, Streptomycessp.TP-A0456 StreptomyceshygroscopicusA0451 123 AntonievanLeeuwenhoek(2015)108:267–289 273 4) 1 Reference Igarashietal.(2007) KafurandKhan(2011) Kimetal.(2006) Kumaretal.(2011) Linetal.(2008) LuandShen(2003) LuandShen(2007) Machavarianietal.(20 A) n B) ci y d m Bioactivecompounds Lupinacidins ND 6-Alkylsalicylicacids(salaceyinsAan ND Tyrosol(possibleligandforGPR12) Phenylethylaminederivatives, Cyclicdipeptides, Nucleosidesandtheiraglycones, N-acetyltryptamineand Pyrrole-2-carboxylicacid 24-demethyl-bafilomycinC1(Naphtho NaphthomycinK,AandE ND s e ur af ult e c Tissue ND Leaf Stem Twig,l Root ND Tissue Leaf s, Hostplant ND Catharanthesroseus Ricinuscommunis Emblicaofficinalis Cistanchesdeserticola Maytenushookeri Maytenushookeri Achilleamillefolium, Aloearborescens, Anthoxantumodoratum, Arctiumlappa, Convallariamajalis, Fragariavesca, Geraniumpretense, Hippophaerhamnoides, Lysimachianummularia, Matricariamatricarioide Melilotusofficinalis, Menthaarvensis, Plantagomajor, Rosacinnamomea, Rubusidaeus, Tanacetumvulgare, Taraxacumofficinale, Trifoliumpretense Urticadioica, Violaodorata cetes ni nsis MS53 Table1continued Speciesofactinomy Micromonosporalupi StreptomycescavoureAB184264.1 Streptomyceslaceyi Actinomycetessp. Streptomycessp. Streptomycessp.CS Streptomycessp.CS Micromonosporasp., Nocardiopsissp., Streptomycessp. 123 274 AntonievanLeeuwenhoek(2015)108:267–289 2) Reference MiniPriya(2012) Moussaetal.(2011) Passarietal.(2015) Pujiyantoetal.(201 Cs), Cs), O O V e, V unds( MC-as unds( sidase Bioactivecompounds Volatileorganiccompo Diffusiblemetabolites Chitinase,Cellulases,C Volatileorganiccompo Diffusiblemetabolites ND Inhibitorofalpha-gluco er w o fl ot, m o e r st e stem, leaf, Tissu Root ND Leaf, Root, Hostplant Phyllanthusniruri, Withaniasomnifera, Catharanthusroseus, Hemidesmusindicus Achilleafragrantissima, Catharanthusroseus, Artemisiaherbaalba,- A.judaica, Jasoniamontan, Launaesp., Echinopsspinosissimus, Pulicariasp., Centauriasp., Neriumoleander Mirabilisjalapa, Clerodendrumcolebrookianu, Eupatoriumodoratum, Alstoniascholaris Musasuperba Tinosporacrispa Phaleriamacrocarpa, Curcumaaeruginosa, Andrographispaniculata, Caesalpiniasappan, Curcumaxanthoriza, Gynuraprocumbens, Physalisperuviana, Hibiscussabdariffa s e n e Table1continued Speciesofactinomycetes Actinomadurasp. Kibdelosporangiumsp., Kitasatosporiasp., Nocardioidessp., Pseudonocardiasp., Streptomycessp., Undefiniedactinomycetes Actinomadurasp., Kibdelosporangiumsp., Kitasatosporiasp., Nocardiasp., Nocardioidessp., Pseudonocardiasp., Streptomycessp., Undefiniedactinomycetes Actinomycetesp., Brevibacteriumsp., Leifsoniasp., Microbacteriumsp., Streptomycessp. Streptomycesolivochromog 123 AntonievanLeeuwenhoek(2015)108:267–289 275 002) 8b) 9) 1) 2a) 2b) 2 0 0 1 1 1 ( 0 0 0 0 0 e al. (2 (2 (2 (2 (2 nc et al. al. al. al. al. ere en et et et et et Ref Pull Qin Qin Qin Qin Qin B ds d n n u a o A p m s co ycin e m Bioactiv Celastra ND ND ND ND ND af e l m, e e st Tissu ND Root Root Root Stem Root, a, s Hostplant Maytenusaquifolia, Putterlickiaretrospino Putterlickiaverrucosa Carexbaccans Scopariadulcis, Maytenusaustroyunnanensis Jatrophacurcas Jatrophacurcas Maytenusaustroyunnanensis 8 Table1continued Speciesofactinomycetes Streptomycessetonii, Streptomycessampsonii, Streptomycessp.Q21, Streptomycessp.MaB-QuH- Glycomycesendophyticus Glycomycesmayteni Glycomycesscopariae Pseudonocardiasichuanensis Nocardioidespanzhihuaensis Actinomadurasp., Amycolatopsissp, Cellulosimicrobiumsp., Glycomycessp., Gordoniasp., Janibactersp., Jiangellasp., Microbacteriumsp., Micromonosporasp., Mycobacteriumsp., Nocardiasp., Nocardiopsissp., Nonomuraeasp., Plantactinosporasp, Polymorphosporasp., Promicromonosporasp., Pseudonocardiasp., Saccharopolysporasp, Streptomycessp, Streptosporangiumsp., Tsukamurellasp. 123 276 AntonievanLeeuwenhoek(2015)108:267–289 7) 0 g, 20 Reference Shenpagametal.(2012) SunaryantoandMahsunah(2013) TaechowisanandLumyon(2003) Taechowisanetal.(2003) Taechowisanetal.(2005, Taechowisanetal.(2006) Vermaetal.(2009) Wangetal.(2014) Zhangetal.(2013) n, ari m u o c yl n ylphe marin ds methox nylcou Bioactivecompoun ND ND ND ND p5,7-dimethoxy-4-- 5,7-dimethoxy-4-phe ActinomycinD ND Alkaloids ND af af af, e e e l l l m, m, m, af e e e e le st st st Tissu Root, Root, Root Root, Root Root Root, Root Stem Hostplant Azadiractaindica, Ocimumsanctum, Phyllanthusamarus Curcumadomestica, Phaleriamacrocarpa, Isotomalongiflora, Symplocoscochinensis Zingiberofficinale, Alpiniagalanga Zingiberofficinale, Alpiniagalanga Zingiberofficinale Alpiniagalanga Azadirachtaindica Xylocarpusgranatum Dendranthemaindicum e a 1 m 1 e 1 h Table1continued Speciesofactinomycetes Streptomycessp. Streptomycesantibioticus StreptomycesaureofaciensCMUAc130 Microbisporasp, Micromonosporasp., Nocardiasp., Streptomycessp., Unidentifiedisolates StreptomycesaureofaciensCMUAc130 Microbisporasp., Micromonosporasp. Nocardiasp., Streptomycessp.Tc022, Unidentifiedisolates Microbisporasp., Nocardiasp., Sacchromonosporasp., Streptomycessp., Streptosporangiumsp., Streptoverticilliumsp. Jishengellaendophytica161 Saccharopolysporadendrant 123

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Abstract Endophytes are the microorganisms that exist inside the plant tissues without having any negative impact on the host plant. Medicinal plants.
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