The Resurrection Plant Tripogon Spicatus (Poaceae) Harbors a Diversity of Plant Growth Promoting Bacteria in Northeastern Brazilian Caatinga

Fernandes‐Júnior, Paulo Ivan; Aidar, S. de T.; Morgante, Carolina Vianna; Gava, C. A. T.; Zilli, Jerri Édson; Souza, Layane Silva Barbosa de; Marinho, Rita de Cássia Nunes; Nóbrega, Rafaela Simão Abrahão; Brasil, Marivaine da Silva; Seido, Sirando Lima; Martins, Lindete Míria Vieira

doi:10.1590/01000683rbcs20140646

Cited by 25 publications

(13 citation statements)

References 33 publications

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“…However, the potential of these bacteria to reduce the abiotic stresses, as water deficit, for example, has not been investigated. This potential is even more promising when the native bacteria from arid or semiarid regions are evaluated, presenting higher water deficit tolerance (Zahran 1999;Kavamura et al 2013;Fernandes-Júnior et al 2015) and may confer some water stress tolerance in crops (Kavamura et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Can Bradyrhizobium strains inoculation reduce water deficit effects on peanuts?

Barbosa

Brito

Fernandes

et al. 2018

World J Microbiol Biotechnol

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Drought is one of the environmental factors that most affects peanut cultivation in semi-arid regions, resulting in economic losses to growers. However, growth promoting bacteria are able to reduce water deficit damage in some plant species. In this context, this study aimed to evaluate the interaction of Bradyrhizobium strains reducing water stress effects on peanut genotypes by antioxidant enzymes activities, leaf gas exchanges and vegetative growth, as well as to determine the taxonomic positioning of strain ESA 123. The 16S rRNA gene of ESA 123 was amplified by PCR and sequenced by dideoxy Sanger sequencing method. An experiment was performed in greenhouse with three peanut genotypes (BRS Havana, CNPA 76 AM and 2012-4), two Bradyrhizobium strains (SEMIA 6144 and ESA 123), a mineral source of N and an absolute control (without N) under two water regimes (with and without irrigation). Seeds of peanut were sown and the plants were grown until 30 days after emergence. On the 20th day, the water deficit plants group had their irrigation suspended for 10 days. At in silico analyzes, ESA 123 presented 98.97% similarity with the type strain of B. kavangense. Leaf gas exchange was affected by water deficit; as well as alteration of antioxidant activities and reduction of vegetative growth variables. However, some plants inoculated with SEMIA 6144 and ESA 123 strains presented lower reductions and increment of some evaluated variables, mainly the ones inoculated with the ESA 123 strain, Bradyrhizobium sp. from the semi-arid region of Northeast Brazil. This data suggests beneficial effects of the peanut-Bradyrhizobium interaction in a water stress condition, specially with the ESA 123 strain.

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Section: Introductionmentioning

confidence: 99%

Can Bradyrhizobium strains inoculation reduce water deficit effects on peanuts?

Barbosa

Brito

Fernandes

et al. 2018

World J Microbiol Biotechnol

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“…This phytogeographic domain is characterized by a high incidence of sunlight, a short and irregular rainy season (up to 800 mm yr -1 ), and high average temperatures (Albuquerque et al, 2012). These conditions have led to the selection of highly adapted plant species, together with their associated microbial community (Albuquerque et al, 2012;Fernandes-Júnior et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Genetic Variability and Symbiotic Efficiency of Erythrina velutina Willd. Root Nodule Bacteria from the Semi-Arid Region in Northeastern Brazil

Menezes

Escobar

Fraiz

et al. 2017

Rev. Bras. Ciênc. Solo

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Legume-rhizobia symbiosis is a cross-kingdom association that results in large amounts of nitrogen incorporated in food webs. For the Brazilian semi-arid region, data on genetic variability and symbiotic efficiency of Papilionoidae rhizobial communities are very scarce. The aim of this study was to evaluate the genetic variability and the symbiotic efficiency of eight rhizobial isolates obtained from "mulungu" (Erythrina velutina Willd.) nodules. For 16S rRNA gene sequencing, the genomic DNA was extracted using a commercial kit, amplified with universal primers, and subjected to sequencing reactions. For the isolate ESA 71, PCR amplifications for nodC and nodA genes were attempted. Rhizobial efficiency was assessed by two greenhouse experiments. The first assay was carried out under gnotobiotic conditions, with sterile sand as a substrate; the second experiment was conducted in a non-sterile soil. For both experiments, the inoculation treatments consisted of a single inoculation of each isolate, in addition to a treatment with Bradyrhizobium elkanii BR 5609 as a reference strain. Furthermore, two non-inoculated control treatments, supplied and not supplied with mineral N, were also evaluated. Bacterial identification indicated that both α and β-rhizobia could be found in "mulungu" root nodules. Three isolates where classified within the Rhizobium genus, four bacteria belonged to Bradyrhizobium and one isolate clustered with Burkholderia. Positive amplification of an intragenic fragment of the nodA gene using a primer set to β-rhizobia could be found for ESA 71 (Burkholderia). All bacterial isolates were effective in colonizing "mulungu" roots. In the first experiment, all inoculated treatments and N fertilization increased the N concentration in "mulungu" shoot tissues. For total N in the shoots, the isolates ESA 70, ESA 72, and ESA 75 stood out. In the non-sterile substrate experiment, the isolates ESA 70, ESA 71, ESA 72, and ESA 75, together with the reference strains, induced increases in the shoot N concentration and total accumulation compared to the absolute control. The results indicate that "mulungu" is able to establish associations with efficient α and β-rhizobia in Brazilian semi-arid soils.

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“…As BPCPs promovem crescimento das plantas por diferentes mecanismos que podem ser classificados como biofertilizantes, fitoestimuladores e biopesticidas, com certas bactérias tendo aplicações sobrepostas, sendo que a maioria atua por mais de um mecanismo (BHATTACHARYYA; JHA, 2012), o que é desejável para produção de inoculantes (FERNANDES-JÚNIOR et al, 2015), embora seja difícil determinar as contribuições relativas de diferentes processos responsáveis pela promoção do crescimento das plantas.…”

Section: Mecanismos De Promoção De Crescimentounclassified