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dc.creatorRangel, Wesley de M.-
dc.creatorLongatti, Silvia M. de Oliveira-
dc.creatorFerreira, Paulo A. A.-
dc.creatorBonaldi, D. S.-
dc.creatorGuimarães, Amanda A.-
dc.creatorThijs, Sofia-
dc.creatorWeyens, Nele-
dc.creatorVangronsveld, Jaco-
dc.creatorMoreira, Fatima M. S.-
dc.identifier.citationRANGEL, W. de M. et al. Leguminosae native nodulating bacteria from a gold mine As-contaminated soil: multi-resistance to trace elements, and possible role in plant growth and mineral nutrition. International Journal of Phytoremediation, Philadelphia, v. 19, n. 10, p. 925-936, 2017.pt_BR
dc.description.abstractEfficient N2-fixing Leguminosae nodulating bacteria resistant to As may facilitate plant growth on As-contaminated sites. In order to identify bacteria holding these features, 24 strains were isolated from nodules of the trap species Crotalaria spectabilis (12) and Stizolobium aterrimum (12) growing on an As-contaminated gold mine site. 16S rRNA gene sequencing revealed that most of the strains belonged to the group of α-Proteobacteria, being representatives of the genera Bradyrhizobium, Rhizobium, Inquilinus, Labrys, Bosea, Starkeya, and Methylobacterium. Strains of the first four genera showed symbiotic efficiency with their original host, and demonstrated in vitro specific plant-growth-promoting (PGP) traits (production of organic acids, indole-3-acetic-acid and siderophores, 1-aminocyclopropane-1-carboxylate deaminase activity, and Ca3(PO4)2 solubilization), and increased resistance to As, Zn, and Cd. In addition, these strains and some type and reference rhizobia strains exhibited a wide resistance spectrum to β-lactam antibiotics. Both intrinsic PGP abilities and multi-element resistance of rhizobia are promising for exploiting the symbiosis with different legume plants on trace-element-contaminated soils.pt_BR
dc.publisherTaylor & Francispt_BR
dc.sourceInternational Journal of Phytoremediationpt_BR
dc.subjectPlant growth-promotingpt_BR
dc.subjectBiological nitrogen fixationpt_BR
dc.subjectTrace elements multi-resistancept_BR
dc.subjectβ-lactam antibiotics resistancept_BR
dc.subjectPromoção de crescimento de plantaspt_BR
dc.subjectFixação biológica de nitrogêniopt_BR
dc.subjectElementos traço multi-resistênciapt_BR
dc.subjectResistência aos antibióticos β-lactâmicospt_BR
dc.titleLeguminosae native nodulating bacteria from a gold mine As-contaminated soil: multi-resistance to trace elements, and possible role in plant growth and mineral nutritionpt_BR
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