Distinct Communities of Poplar Endophytes on an Unpolluted and a Risk Element-Polluted Site and Their Plant Growth-Promoting Potential In Vitro
Jazyk angličtina Země Spojené státy americké Médium print-electronic
Typ dokumentu časopisecké články
PubMed
29127500
DOI
10.1007/s00248-017-1103-y
PII: 10.1007/s00248-017-1103-y
Knihovny.cz E-zdroje
- Klíčová slova
- Endophytes, PGPB, Phytoremediation, Poplar, Risk elements, Sordariomycetes,
- MeSH
- antioxidancia metabolismus MeSH
- Bacteria klasifikace účinky léků izolace a purifikace metabolismus MeSH
- biodegradace MeSH
- biodiverzita MeSH
- biomasa MeSH
- endofyty klasifikace účinky léků izolace a purifikace metabolismus MeSH
- fosfáty metabolismus MeSH
- fylogeneze MeSH
- houby klasifikace účinky léků izolace a purifikace metabolismus MeSH
- kořeny rostlin mikrobiologie MeSH
- látky znečišťující životní prostředí toxicita MeSH
- listy rostlin mikrobiologie MeSH
- lyasy štěpící vazby C-C metabolismus MeSH
- mikrobiota účinky léků fyziologie MeSH
- Populus mikrobiologie MeSH
- půda chemie MeSH
- půdní mikrobiologie * MeSH
- regulátory růstu rostlin metabolismus MeSH
- siderofory metabolismus MeSH
- techniky in vitro MeSH
- tolerance léku MeSH
- vývoj rostlin * MeSH
- Publikační typ
- časopisecké články MeSH
- Geografické názvy
- Česká republika MeSH
- Názvy látek
- 1-aminocyclopropane-1-carboxylate deaminase MeSH Prohlížeč
- antioxidancia MeSH
- fosfáty MeSH
- látky znečišťující životní prostředí MeSH
- lyasy štěpící vazby C-C MeSH
- půda MeSH
- regulátory růstu rostlin MeSH
- siderofory MeSH
Numerous studies demonstrated that endophytic microbes can promote plant growth and increase plant stress resistance. We aimed at isolating poplar endophytes able to increase their hosts' fitness both in nutrient-limited and polluted environments. To achieve this goal, endophytic bacteria and fungi were isolated from roots and leaves of hybrid poplars (Populus nigra × P. maximowiczii clone Max-4) on an unpolluted and a risk element-polluted site in the Czech Republic and subsequently screened by a number of in vitro tests. Bacterial communities at the unpolluted site were dominated by Gammaproteobacteria with Pseudomonas sp. as the prominent member of the class, followed by Bacilli with prevailing Bacillus sp., whereas Alphaproteobacteria, mostly Rhizobium sp., prevailed at the polluted site. The fungal endophytic community was dominated by Ascomycetes and highly distinct on both sites. Dothideomycetes, mostly Cladosporium, prevailed at the non-polluted site while unclassified Sordariomycetous fungi dominated at the polluted site. Species diversity of endophytes was higher at the unpolluted site. Many tested endophytic strains solubilized phosphate and produced siderophores, phytohormones, and antioxidants. Some strains also exhibited ACC-deaminase activity. Selected bacteria showed high tolerance and the ability to accumulate risk elements, making them promising candidates for use in inocula promoting biomass production and phytoremediation. Graphical Abstract ᅟ.
Institute of Botany ASCR Zámek 1 252 43 Průhonice Czech Republic
University of Chemistry and Technology Prague Technická 5 166 28 Praha 6 Czech Republic
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