Effects of growth‐promoting rhizobacteria on maize growth and rhizosphere microbial community under conservation tillage in Northeast China

Chen, La; Hao, Zhanhong; Li, Keke; Sha, Ye; Wang, En Tao; Sui, Xinhua; Mi, Guohua; Tian, Chang Fu; Chen, Wenxin

doi:10.1111/1751-7915.13693

Cited by 48 publications

(18 citation statements)

References 93 publications

(104 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the composition of the rhizosphere microbiome alters according to plant age and developmental stage (Cavaglieri et al, 2009;Chaparro et al, 2014;Li et al, 2019) and under abiotic stress (Beirinckx et al, 2020). Furthermore, Chen et al (2021) have described that PGPR inoculation may regulate the relative abundance of predominant bacteria in the rhizosphere and therefore readjusts the composition and structure of the rhizosphere microbiome. In this research, we used maize grown till V5 stage to actively enrich microbes with the P-solubilization trait.…”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, Chen et al. (2021) have described that PGPR inoculation may regulate the relative abundance of predominant bacteria in the rhizosphere and therefore readjusts the composition and structure of the rhizosphere microbiome. In this research, we used maize grown till V5 stage to actively enrich microbes with the P‐solubilization trait.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Shifts in the rhizobiome during consecutive in planta enrichment for phosphate‐solubilizing bacteria differentially affect maize P status

Zutter

Ameye

Debode³

et al. 2021

Microbial Biotechnology

View full text Add to dashboard Cite

Phosphorus (P) is despite its omnipresence in soils often unavailable for plants. Rhizobacteria able to solubilize P are therefore crucial to avoid P deficiency. Selection for phosphate-solubilizing bacteria (PSB) is frequently done in vitro; however, rhizosphere competence is herein overlooked. Therefore, we developed an in planta enrichment concept enabling simultaneous microbial selection for Psolubilization and rhizosphere competence. We used an ecologically relevant combination of iron-and aluminium phosphate to select for PSB in maize (Zea mays L.). In each consecutive enrichment, plant roots were inoculated with rhizobacterial suspensions from plants that had grown in substrate with insoluble P. To assess the plants' P statuses, nondestructive multispectral imaging was used for quantifying anthocyanins, a proxy for maize's P status. After the third consecutive enrichment, plants supplied with insoluble P and inoculated with rhizobacterial suspensions showed a P status similar to plants supplied with soluble P. A parallel metabarcoding approach uncovered that the improved P status in the third enrichment coincided with a shift in the rhizobiome towards bacteria with plant growthpromoting and P-solubilizing capacities. Finally, further consecutive enrichment led to a functional relapse hallmarked by plants with a low P status and a second shift in the rhizobiome at the level of Azospirillaceae and Rhizobiaceae.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Shifts in the rhizobiome during consecutive in planta enrichment for phosphate‐solubilizing bacteria differentially affect maize P status

Zutter

Ameye

Debode³

et al. 2021

Microbial Biotechnology

View full text Add to dashboard Cite

show abstract

“…However, the efficiency of microbial inoculant application is not only related to their beneficial activities, but also to the complex interaction networks that occur in soil ecosystems (Ambrosini et al 2016;Shi et al 2016). Thus, understanding the complex interactions among host plants, inoculants and indigenous rhizobacteria could develop new and effective BNF strategies (Checcucci et al 2017;Soumare et al 2020;Chen et al 2021). However, recent studies about peanut rhizosphere microbial communities have only focused on the influence of the plant, insect pests or drought stress on rhizosphere microorganisms (Haldar and Sengupta 2015;Geng et al 2018;Dai et al 2019;Wang et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Potential of Bradyrhizobia inoculation to promote peanut growth and beneficial Rhizobacteria abundance

Shang

Huo

et al. 2021

J Appl Microbiol

Self Cite

View full text Add to dashboard Cite

Aims: To investigate the effects of three symbiotic Bradyrhizobium strains on peanut growth and on rhizobacterial communities in flowering and harvest stages in an organic farm, also to evaluate the role of plant development in influencing peanut rhizobacterial microbiota and correlations among the inoculants, rhizobacterial communities and plant growth. Methods and Results: Peanut seeds were inoculated with three individual Bradyrhizobium strains, plant growth performance was measured in two developmental stages and rhizobacterial communities were analysed by Illumina sequencing of rpoB gene amplicons from peanut rhizosphere. The three bradyrhizobial inoculants significantly increased the nodule numbers and aboveground fresh weight of peanut plants regardless of the different growth stages, and the pod yields were increased to some extent and significantly positively correlated with Bradyrhizobium abundances in rhizosphere. Principal coordinate analysis indicated that the rhizobacterial communities were strongly influenced by the inoculation and peanut developmental stages. The bradyrhizobia inoculation increased relative abundances of potentially beneficial bacteria in peanut rhizosphere, and also altered rhizobacterial cooccurrence association networks and important network hub taxa. Similarly, plant development also significantly influenced the structure, composition and co-occurrence association networks of rhizobacterial communities. Conclusions: Bradyrhizobial inoculants increased peanut growth and yields, they and plant development affected the assembly of peanut rhizobacterial communities. Significance and Impact of the Study: Rhizobial inoculants improved the host plant performance that might also be associated with the dynamic changes in rhizobacterial community except enhancing the biological nitrogen fixation and helps to profoundly understand the mechanism how rhizobia inoculants improve plant growth and yields.

show abstract

“…Overall, the PCoA revealed a significant correlation of the bacterial community composition with plant height, root and shoot biomass, and the root-to-shoot ratio, indicating an effect of the media addition, but also a stronger and more pronounced effect of the PGPR addition on the bacterial community. A positive effect of PGPR addition on plant development and the composition of rhizosphere bacterial communities has also been shown by e.g., Chen et al [ 55 ] and Pereira et al [ 56 ]. Nevertheless, the root-associated microbial community composition was also affected by the P addition, which has also been shown for the rhizosphere inhabiting microbial community of blueberries [ 57 ].…”

Section: Discussionmentioning

confidence: 60%

Morphological and Metabolite Responses of Potatoes under Various Phosphorus Levels and Their Amelioration by Plant Growth-Promoting Rhizobacteria

Chea

Pfeiffer

Schneider

et al. 2021

IJMS

View full text Add to dashboard Cite

Low phosphorus (P) availability is a major limiting factor for potatoes. P fertilizer is applied to enhance P availability; however, it may become toxic when plants accumulate at high concentrations. Therefore, it is necessary to gain more knowledge of the morphological and biochemical processes associated with P deficiency and toxicity for potatoes, as well as to explore an alternative approach to ameliorate the P deficiency condition. A comprehensive study was conducted (I) to assess plant morphology, mineral allocation, and metabolites of potatoes in response to P deficiency and toxicity; and (II) to evaluate the potency of plant growth-promoting rhizobacteria (PGPR) in improving plant biomass, P uptake, and metabolites at low P levels. The results revealed a reduction in plant height and biomass 60–80% under P deficiency compared to P optimum. P deficiency and toxicity conditions also altered the mineral concentration and allocation in plants due to nutrient imbalance. The stress induced by both P deficiency and toxicity was evident from an accumulation of proline and total free amino acids in young leaves and roots. Furthermore, root metabolite profiling revealed that P deficiency reduced sugars by 50–80% and organic acids by 20–90%, but increased amino acids by 1.5–14.8 times. However, the effect of P toxicity on metabolic changes in roots was less pronounced. Under P deficiency, PGPR significantly improved the root and shoot biomass, total root length, and root surface area by 32–45%. This finding suggests the potency of PGPR inoculation to increase potato plant tolerance under P deficiency.

show abstract

Effects of growth‐promoting rhizobacteria on maize growth and rhizosphere microbial community under conservation tillage in Northeast China

Cited by 48 publications

References 93 publications

Shifts in the rhizobiome during consecutive in planta enrichment for phosphate‐solubilizing bacteria differentially affect maize P status

Shifts in the rhizobiome during consecutive in planta enrichment for phosphate‐solubilizing bacteria differentially affect maize P status

Potential of Bradyrhizobia inoculation to promote peanut growth and beneficial Rhizobacteria abundance

Morphological and Metabolite Responses of Potatoes under Various Phosphorus Levels and Their Amelioration by Plant Growth-Promoting Rhizobacteria

Contact Info

Product

Resources

About