Abstract
Microbial biodiversity provides an increasingly important source of medically and industrially useful compounds. We have isolated 14 actinomycete species from a collection of approximately 300 plant stem samples from the upper Amazonian rainforest in Peru. All of the cultured isolates produce substances with inhibitory activity directed at a range of potential fungal and bacterial pathogens. For some organisms, this activity is very broad in spectrum while other organisms show specific activity against a limited number of organisms. Two of these organisms preferentially inhibit bacterial test organisms over eukaryotic organisms. rDNA sequence analysis indicates that these organisms are not equivalent to any other cultured deposits in GenBank. Our results provide evidence of the untapped biodiversity in the form of biologically active microbes present within the tissues of higher plants.
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References
Altschul S, Madden T, Schffer AA, Zhang J, Zhang Z, Miller W, Lipman D (1997) Gapped blast and psi-blast: A new generation of protein database search programs. Nucleic Acids Res 25:3389–3402
Araujo WL, Marcon J, Maccheroni W Jr, Van Elsas JD, Van Vuurde JW, Azevedo JL (2002) Diversity of endophytic bacterial populations and their interaction with xylella fastidiosa in citrus plants. Appl Environ Microbiol 68:4906–4914
Arnold A, Mejia L, Kyllo D, Rojas E, Maynard Z, Robbins N, Herre E (2003) Fungal endophytes limit pathogen damage in a tropical tree. Proc Natl Acad Sci USA 100:15649–15654
Bacon C, White J (2000) Microbial endophytes. Marcel Dekker, New York
Berdy J (2005) Bioactive microbial metabolites. J Antibiot (Tokyo) 58:1–26
Cao L, Qiu Z, You J, Tan H, Zhou S (2005) Isolation and characterization of endophytic streptomycete antagonists of fusarium wilt pathogen from surface-sterilized banana roots. FEMS Microbiol Lett 247:147–152
Caruso M, Colombo AL, Fedeli L, Pavesi A, Quaroni S, Saracchi M, Ventrella G (2000) Isolation of endophytic fungi and actinomycetes taxane producers. Ann Microbiol 50:3–13
Castillo U, Harper J, Strobel G, Sears J, Alesi K, Ford E, Lin J, Hunter M, Maranta M, Haiyan G, Yaver D, Jensen JB, Porter H, Robinson R, Millar D, Hess WM, Condron M, Teplow D (2003) Kakadumycins, novel antibiotics from streptomyces sp. Nrrl 30566, an endophyte of grevillea pteridifolia. FEMS Microbiol Lett 224(2):183–190
Castillo U, Myers S, Browne L, Strobel G, Hess WM, Hanks J, Reay D (2005) Scanning electron microscopy of some endophytic streptomycetes in snakevine–kennedia nigricans. Scanning 27:305–311
Castillo U, Strobel G, Ford E, Hess W, Porter H, Jensen J, Albert H, Robison R, Condron MAM, Teplow D, Stevens D, Yaver D (2002) Munumbicins, wide-spectrum antibiotics produced by streptomyces nrrl 30562, endophytic on kennedia nigriscans. Microbiology 148:2675–2685
Castillo UF, Browne L, Strobel G, Hess WM, Ezra S, Pacheco G, Ezra D (2007) Biologically active endophytic streptomycetes from nothofagus spp. And other plants in patagonia. Microb Ecol 53:12–19
de Araújo J, da Silva A, Azevedo J (2000) Isolation of endophytic actinomycetes from roots and leaves of maize (zea mays l.). Braz Arch Biol Technol 43:447–451
Elvira-Recuenco M, van Vuurde JW (2000) Natural incidence of endophytic bacteria in pea cultivars under field conditions. Can J Microbiol 46:1036–1041
Ezra D, Castillo UF, Strobel GA, Hess WM, Porter H, Jensen JB, Condron MA, Teplow DB, Sears J, Maranta M, Hunter M, Weber B, Yaver D (2004) Coronamycins, peptide antibiotics produced by a verticillate streptomyces sp. (msu-2110) endophytic on monstera sp. Microbiology 150:785–793
Garbeva P, Overbeek LS, Vuurde JW, Elsas JD (2001) Analysis of endophytic bacterial communities of potato by plating and denaturing gradient gel electrophoresis (dgge) of 16s rdna based pcr fragments. Microb Ecol 41:369–383
Gurney K, Mantle P (1993) Biosynthesis of 1-n-methylalbonoursin by an endophytic streptomyces sp. Isolated from perennial ryegrass. J Nat Prod 56:1194–1198
Hanauer DI, Jacobs-Sera D, Pedulla ML, Cresawn SG, Hendrix RW, Hatfull GF (2006) Inquiry learning. Teaching scientific inquiry. Science 314:1880–1881
Idris R, Trifonova R, Puschenreiter M, Wenzel WW, Sessitsch A (2004) Bacterial communities associated with flowering plants of the ni hyperaccumulator thlaspi goesingense. Appl Environ Microbiol 70:2667–2677
Kutzner H (1986) The family streptomycetaceae. In: Starr M, Stolp H, Trüper H, Ballows A, Schlegel H (eds) The Prokaryotes. Springer, New York, pp 2025–2090
Lane D, Pace B, Olsen G, Stahl D, Sogin M, Pace N (1985) Rapid determination of 16s ribosomal rna sequences for phylogenetic analyses. Proc Natl Acad Sci USA 82:6955–6599
Lechevalier HA, Lechevalier MP (1967) Biology of actinomycetes. Annu Rev Microbiol 21:71–100
Marchesi J, Sato T, Weightman A, Martin T, Fry J, Hiom S, Dymock D, Wade W (1998) Design and evaluation of useful bacterium-specific pcr primers that amplify genes coding for bacterial 16s rrna. Appl Environ Microbiol 64:795–799
Redman RS, Sheehan KB, Stout RG, Rodriguez RJ, Henson JM (2002) Thermotolerance generated by plant/fungal symbiosis. Science 298:1581
Reiter B, Sessitsch A (2006) Bacterial endophytes of the wildflower crocus albiflorus analyzed by characterization of isolates and by a cultivation-independent approach. Can J Microbiol 52:140–149
Rodriguez R, Henson J, Van Volkenburgh E, Hoy M, Wright L, Beckwith F, Kim Y, Redman R (2008) Stress tolerance in plants via habitat-adapted symbiosis. ISME J 4:404–416
Shimizu M, Nakagawa Y, Sato Y, Furumai T, Igarashi Y, Onaka H, Yoshida R, Kunoh H (2000) Studies on endophytic actinomycetes (i) streptomyces sp. Isolated from rhododendron and its antifungal activity. J Gen Plant Pathol 66:360–366
Smith SA, Tank DC, Boulanger LA, Bascom-Slack CA, Eisenman K, Kingery D, Babbs B, Fenn K, Greene JS, Hann BD, Keehner J, Kelley-Swift EG, Kembaiyan V, Lee SJ, Li P, Light DY, Lin EH, Ma C, Moore E, Schorn MA, Vekhter D, Nunez PV, Strobel GA, Donoghue MJ, Strobel SA (2008) Bioactive endophytes warrant intensified exploration and conservation. PLoS ONE 3:e3052
Strobel G, Daisy B (2003) Bioprospecting for microbial endophytes and their natural products. Microbiol Mol Biol Rev 67:491–502
Strobel G, Daisy B, Castillo U, Harper J (2004) Natural products from endophytic microorganisms. J Nat Prod 67:257–268
Strobel SA, Strobel GA (2007) Plant endophytes as a platform for discovery-based undergraduate science education. Nat Chem Biol 3:356–359
Taechowisan T, Wanbanjob A, Tuntiwachwuttikul P, Taylor W (2006) Identification of streptomyces sp. Tc022, an endophyte in alpinia galanga, and the isolation of actinomycin d. Ann Microbiol 56:113–117
Tan R, Zou W (2001) Endophytes: A rich source of functional metabolites. Nat Prod Rep 18:448–459
Tian XL, Cao LX, Tan HM, Zeng QG, Jia YY, Han WQ, Zhou SN (2004) Study on the communities of endophytic fungi and endophytic actinomycetes from rice and their antipathogenic activities in vitro. World J Microbiol Biotechnol 20:303–309
Zin N, Sarmin N, Ghadin N, Basri D, Sidik N, Hess W, Strobel G (2007) Bioactive endophytic streptomycetes from the malay peninsula. FEMS Microbiol Lett 274:83–88
Acknowledgments
This program was supported in part by a grant to Yale University, in support of S.A.S., from the Howard Hughes Medical Institute through the _HHMI Professors Program. Additional funding was also provided by the National Science Foundation to S.A.S. (OISE 0636212). S.J.L. was supported by a fellowship from the Beckman Foundation. Assistance in plant collection was provided by Mr. Javier Huayaban Troncoso and Mr. Oscar Caceres Maceda of Nature Inka, Peru. The fungal test organisms were provided by G.A. Strobel, Department of Plant Sciences, Montana State University; the Bacillus subtilis was provided by Dr. A.L. Sonenshein, Tufts University School of Medicine.
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Bascom-Slack, C.A., Ma, C., Moore, E. et al. Multiple, Novel Biologically Active Endophytic Actinomycetes Isolated from Upper Amazonian Rainforests. Microb Ecol 58, 374–383 (2009). https://doi.org/10.1007/s00248-009-9494-z
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DOI: https://doi.org/10.1007/s00248-009-9494-z