Diazotrophic Bacteria and Their Mechanisms to Interact and Benefit Cereals

Pankievicz, Vânia Carla Silva; Amaral, Fernanda Plucani do; Stacey, Gary

doi:10.1094/mpmi-11-20-0316-fi

Cited by 47 publications

(27 citation statements)

References 85 publications

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“…In rice, bradyrhizobial strains use their quorum sensing system to sustain their symbiotic interaction with hosts (Pongdet et al, 2015;Cai et al, 2020). Non-rhizobial diazotrophic bacteria could also colonize rice, e.g., Azoarcus olearius which uses its flagella as a mediator of endophytic competence, or Herbaspirillum seropedicae (Pankievicz et al, 2021). Often, diazotrophic bacteria can fix air dinitrogen to produce ammonia that is usable by host plants (Peoples et al, 1995).…”

Section: Symbiosismentioning

confidence: 99%

“…strain was a typical diazotroph found in Karar grass plants (Leptochloa fusca L. Kunth), which can be co-cultured with rice (Hurek and Reinhold-Hurek, 2003). More recent work has demonstrated the utility of the diazotrophic bacterial associations of the grass Setaria viridis (e.g., with Azospirillum brasilense and H. seropedicae), as model systems for research aimed at enhancing biological nitrogen fixation for better nitrogen availability (Pankievicz et al, 2015(Pankievicz et al, , 2021.…”

Section: Symbiosismentioning

confidence: 99%

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Transcriptomic and Metabolomic Approaches Deepen Our Knowledge of Plant–Endophyte Interactions

et al. 2022

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In natural systems, plant–symbiont–pathogen interactions play important roles in mitigating abiotic and biotic stresses in plants. Symbionts have their own special recognition ways, but they may share some similar characteristics with pathogens based on studies of model microbes and plants. Multi-omics technologies could be applied to study plant–microbe interactions, especially plant–endophyte interactions. Endophytes are naturally occurring microbes that inhabit plants, but do not cause apparent symptoms in them, and arise as an advantageous source of novel metabolites, agriculturally important promoters, and stress resisters in their host plants. Although biochemical, physiological, and molecular investigations have demonstrated that endophytes confer benefits to their hosts, especially in terms of promoting plant growth, increasing metabolic capabilities, and enhancing stress resistance, plant–endophyte interactions consist of complex mechanisms between the two symbionts. Further knowledge of these mechanisms may be gained by adopting a multi-omics approach. The involved interaction, which can range from colonization to protection against adverse conditions, has been investigated by transcriptomics and metabolomics. This review aims to provide effective means and ways of applying multi-omics studies to solve the current problems in the characterization of plant–microbe interactions, involving recognition and colonization. The obtained results should be useful for identifying the key determinants in such interactions and would also provide a timely theoretical and material basis for the study of interaction mechanisms and their applications.

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Section: Symbiosismentioning

confidence: 99%

Section: Symbiosismentioning

confidence: 99%

Transcriptomic and Metabolomic Approaches Deepen Our Knowledge of Plant–Endophyte Interactions

et al. 2022

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“…PGPB induce biochemical and plant defense responses, causing induced systemic resistance (ISR; Pereira et al, 2021). In addition to synthesizing compounds that inhibit the growth of pathogens, they can also induce greater production of allelochemicals and change the composition of exudates in plants, contributing to a reduction in pest development (Bashan et al, 2014;Pankievicz et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Humic Substances in Combination With Plant Growth-Promoting Bacteria as an Alternative for Sustainable Agriculture

et al. 2021

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Plant growth-promoting bacteria (PGPB) and humic substances (HSs) are promising options for reducing the use of pesticides and mineral fertilizers. Although many studies have shown the effects of PGPB and HSs separately, little information is available on plant responses to the combined application of these biostimulants despite the great potential for the simultaneous action of these biological inputs. Thus, the objective of this review is to present an overview of scientific studies that addressed the application of PGPB and HSs to different crops. First, we discuss the effect of these biostimulants on biological nitrogen fixation, the various effects of the inoculation of beneficial bacteria combined with the application of HSs on promoting the growth of nonleguminous plants and how this combination can increase bacterial colonization of plant hosts. We also address the effect of PGPB and HSs on plant responses to abiotic stresses, in addition to discussing the role of HSs in protecting plants against pathogens. There is a lack of studies that address the role of PGPB + HSs in biocontrol. Understanding the factors involved in the promotion of plant growth through the application of PGPB and HSs can assist in the development of efficient biostimulants for agricultural management. This approach has the potential to accelerate the transition from conventional cultivation to sustainable agrosystems.

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“…According to Albuquerque et al [ 56 ], a deficiency of nitrogen during the feast phase is required to achieve higher PHAs accumulation rates. In this study, after the implementation of the DGL strategy, several genera of diazotrophic bacteria increased their RAs (NI vs. NII and SI vs. SII): Azospirillum , Calothrix , Corynebacterium , Insolitispirillum , Kryptousia , Niveispirillum , and Novosphingobium [ 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 ]. More specifically, Azospirillum , Calothrix , and Niveispirillum were enriched in SBR-N, and Corynebacterium , Insolitispirillum , and Novosphingobium in SBR-S.…”

Section: Resultsmentioning

confidence: 98%

Dynamics of PHA-Accumulating Bacterial Communities Fed with Lipid-Rich Liquid Effluents from Fish-Canning Industries

et al. 2022

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The biosynthesis of polyhydroxyalkanoates (PHAs) from industrial wastes by mixed microbial cultures (MMCs) enriched in PHA-accumulating bacteria is a promising technology to replace petroleum-based plastics. However, the populations’ dynamics in the PHA-accumulating MMCs are not well known. Therefore, the main objective of this study was to address the shifts in the size and structure of the bacterial communities in two lab-scale sequencing batch reactors (SBRs) fed with fish-canning effluents and operated under non-saline (SBR-N, 0.5 g NaCl/L) or saline (SBR-S, 10 g NaCl/L) conditions, by using a combination of quantitative PCR and Illumina sequencing of bacterial 16S rRNA genes. A double growth limitation (DGL) strategy, in which nitrogen availability was limited and uncoupled to carbon addition, strongly modulated the relative abundances of the PHA-accumulating bacteria, leading to an increase in the accumulation of PHAs, independently of the saline conditions (average 9.04 wt% and 11.69 wt%, maximum yields 22.03 wt% and 26.33% SBR-N and SBR-S, respectively). On the other hand, no correlations were found among the PHAs accumulation yields and the absolute abundances of total Bacteria, which decreased through time in the SBR-N and did not present statistical differences in the SBR-S. Acinetobacter, Calothrix, Dyella, Flavobacterium, Novosphingobium, Qipengyuania, and Tsukamurella were key PHA-accumulating genera in both SBRs under the DGL strategy, which was revealed as a successful tool to obtain a PHA-enriched MMC using fish-canning effluents.

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Diazotrophic Bacteria and Their Mechanisms to Interact and Benefit Cereals

Cited by 47 publications

References 85 publications

Transcriptomic and Metabolomic Approaches Deepen Our Knowledge of Plant–Endophyte Interactions

Transcriptomic and Metabolomic Approaches Deepen Our Knowledge of Plant–Endophyte Interactions

Humic Substances in Combination With Plant Growth-Promoting Bacteria as an Alternative for Sustainable Agriculture

Dynamics of PHA-Accumulating Bacterial Communities Fed with Lipid-Rich Liquid Effluents from Fish-Canning Industries

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