Microbial inoculants modulate growth traits, nutrients acquisition and bioactive compounds accumulation of Cyclocarya paliurus (Batal.) Iljinskaja under degraded field condition

Wang, Zhikang; Xu, Ziheng; Chen, Ziyun; Kowalchuk, George A.; Fu, Xiangxiang; Kuramae, Eiko E.

doi:10.1016/j.foreco.2020.118897

Cited by 14 publications

(29 citation statements)

References 67 publications

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“…The influences of different microbial inoculants on soil properties under controlled conditions and the practical effects on plant nutrient uptake under natural conditions have been thoroughly evaluated ( 31 – 33 ). In this study, we sought to investigate the dynamics of soil nutrients, plant growth, and the soil-resident bacterial community in response to successive microbial inoculations over the course of a growing season.…”

Section: Introductionmentioning

confidence: 99%

Succession of the Resident Soil Microbial Community in Response to Periodic Inoculations

Wang

Chen

Kowalchuk

et al. 2021

Appl Environ Microbiol

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To maintain the beneficial effects of microbial inoculants on plant and soil, repeated inoculation represents a promising option. Until now, the impacts of one-off inoculation on the native microbiome have been explored, but it remains unclear how long and to what extent the periodic inoculations would affect the succession of the resident microbiome in bulk soil. Here we examined the dynamic responses of plant growth, soil functions and resident bacterial community in the bulk soil to periodic inoculations of phosphate-solubilizing and N2-fixing bacteria alone or in combination. Compared to single-strain inoculation, co-inoculation better stimulated plant growth and soil nutrients. However, the benefits from inoculants did not increase with repeated inoculations and were not maintained after transplanting to a different site. In response to microbial inoculants, three patterns of shifts in bacterial composition were observed – fold increased, fold decreased, and resilience. The periodic inoculations impacted the succession course of resident bacterial communities in bulk soil, mainly driven by changes in soil pH and nitrate, resulting in the development of three main cluster types throughout the investigation. The single and mixed inoculants transiently modulated the variation in the resident community in association with soil pH and C/N, but finally the community established and showed resilience to following inoculations. Consequently, the necessity of repeated inoculations should be reconsidered, and while the different microbial inoculants showed distinct impacts on resident microbiome succession, communities ultimately exhibited resilience. IMPORTANCE Introducing beneficial microbes to the plant-soil system is an environmentally friendly approach to improve crop yield and soil environment. Numerous studies have attempted to reveal the impacts of inoculation on rhizosphere microbiome. However, little is known about the effectiveness of periodic inoculations on soil functioning. In addition, the impact persistence of repeated inoculations on the native community remains unclear. Here, we track the succession traits of resident microbiome in the bulk soil across a growing season and identify the taxa clusters that diversely respond to periodic inoculation. Crucially, we compare the development of resident community composition with and without inoculation, thus providing new insight into understanding the interactions between resident microbes and intruders. Finally, we conclude that initial inoculation plays a more important role in influencing the whole system, and the native microbial community exhibits traits of resilience, but no resistance, to the subsequent inoculations.

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Section: Introductionmentioning

confidence: 99%

Succession of the Resident Soil Microbial Community in Response to Periodic Inoculations

Wang

Chen

Kowalchuk

et al. 2021

Appl Environ Microbiol

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“…and Azotobacter sp. (Deng et al 2019b, Wang et al 2019c, Liu et al 2020b, Wang et al 2021b. Phytostimulatory PGPB also include a group of beneficial bacteria expressing ACC deaminase, which reduces stress-induced ethylene production in host plants under degraded or stressed conditions (Saleem et al 2007); this group is also known as ACC deaminase-containing PGPB (Penrose and Glick 2003).…”

Section: Efficiency Of Sbm In Degraded Land: Species Selection Surviv...mentioning

confidence: 99%

“…Nutrient-enhancing strains include several groups that play different roles in regulating soil nutrient availability, such as Phosphate-solubilizing bacteria (PSB) and N 2fixing bacteria (NFB). Combining phytostimulatory and nutrient-enhancing strains can achieve multiple goals and produce significant advantages compared with single inoculation (Yu et al 2012, Wang et al 2021a, Wang et al 2021b). Consequently, appropriate SBM selection depends on the roles that the beneficial microbe(s) should play in the biological restoration of degraded land.…”

Section: Efficiency Of Sbm In Degraded Land: Species Selection Surviv...mentioning

confidence: 99%

“…Penicillium spp., Rhizobium spp., Bacillus spp., and Pseudomonas spp. have been shown to improve soil phosphatase activities , Wang et al 2019b, Wang et al 2021b).…”

Section: Linking Changes In Soil Nutrient Properties To Introduced Sb...mentioning

confidence: 99%

“…The combined application of different beneficial strains with different traits provides significant advantages compared with the use of a single microbial inoculant (Juge et al 2012, Yu et al 2012, Hungria et al 2013). For instance, detailed studies have shown that combined inoculation with PSB and NFB has great potential to enhance plant growth and soil nutrients under degraded conditions (Wang et al 2019c, Wang et al 2021b. The advantages of co-inoculation are the result of synergistic interactions that stimulate physical or biochemical activities and simultaneously improve microbial viability (Yu et al 2012), thus enhancing the benefits to the soil and host plant through the production of enzymes and organic acids.…”

Section: Linking Changes In Soil Nutrient Properties To Introduced Sb...mentioning

confidence: 99%

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Linking microbial inoculants and associated changes in the soil microbiome to plant-soil performance in degraded lands

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Cultivar governs plant response to inoculation with single isolates and the microbiome associated with arbuscular mycorrhizal fungi

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Microbial inoculants modulate growth traits, nutrients acquisition and bioactive compounds accumulation of Cyclocarya paliurus (Batal.) Iljinskaja under degraded field condition

Cited by 14 publications

References 67 publications

Succession of the Resident Soil Microbial Community in Response to Periodic Inoculations

Succession of the Resident Soil Microbial Community in Response to Periodic Inoculations

Linking microbial inoculants and associated changes in the soil microbiome to plant-soil performance in degraded lands

Cultivar governs plant response to inoculation with single isolates and the microbiome associated with arbuscular mycorrhizal fungi

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