Grass-legume mixtures enhance forage production via the bacterial community

Yan, Huilin; Gu, Shuhang; Li, Shuzhen; Shen, Wei; Zhou, Xueli; Yu, Hao; Ma, Kun; Zhao, Yangan; Wang, Yingcheng; Zheng, Hua; Deng, Ye; Lu, Guangxin

doi:10.1016/j.agee.2022.108087

Cited by 31 publications

(22 citation statements)

References 71 publications

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“…Nonetheless, the use of diverse forage species mixtures can promote benefits to the ecosystems, other than those evaluated in this study (forage production and soil C sequestration). As such, soil microbial communities and nutrient cycling can be improved (Yan et al, 2022), specially N, which can be fixed by legumes, and gradually used by grasses growing in the mix, reducing the demand for synthetic N‐fertiliser (Lüscher et al, 2014) and reducing environmental burdens related to nitrous oxide emissions (Bracken et al, 2022) or nitrate leaching (Eriksen et al, 2015). In addition, species diverse systems can create favourable habitat for wildlife and pollinators and promote weed and pest suppression, optimizing ecosystem services and sustainability in agricultural production (Isbell et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

Inundation impacts on diversified pasture biomass allocation and soil particulate organic matter stocks

Ribeiro,

Miquilini,

Lyon

et al. 2023

Grass and Forage Science

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Natural soil inundation caused by frequent and intense precipitation affects carbon allocation in grassland biomass, ultimately leading to changes in soil carbon storage. Increasing forage diversity could provide resiliency to inundation of grassland. The objective was to evaluate forage and root biomass and C and N stocks in the soil particulate organic matter (POM) from pastures under recurring short‐term inundation. Three forage species combinations were evaluated in an inundated (typically lasting for a few days after heavy rain events) and a non‐inundated pasture: (1) predominantly tall‐fescue (Festuca arundinacea Schreb.); (2) mixture of cool‐season perennials composed of tall‐fescue, orchardgrass (Dactylis glomerata L.), bluegrass (Poa pratensis L.) and white (Trifolium repens L.) and red clover (Trifolium pratense L.); (3) and cool‐season mixture of perennials overseeded with oats (Avena strigosa Schreb.) and rye (Secale cereale L.). Roots and forage biomass were sampled during the growing seasons of 2021 and 2022. Soil POM was evaluated 2.5 years after establishment. Inundation reduced forage and root biomass mainly during periods of higher inundation frequency, leading to lower C‐POM stocks (p < .05). Inundation caused a shift in the forage botanical composition, that is, higher occurrence of weeds and less productive grass species with shallow roots. The perennial cool‐season mixture did not increase forage yield compared with tall fescue only but did increase root mass. This occurred mainly at deeper layers and, consequently, increased C‐POM stocks (p < .05). Overseeding of winter annuals reduced overall forage production, despite increasing spring biomass when inundated in the first year, but reduced C and N‐POM stocks (p < .05). Perennial cool‐season forage mixtures can increase the resilience of pastures to inundation events and contribute to increased carbon sequestration in grasslands where inundation is prevalent.

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Section: Discussionmentioning

confidence: 99%

Inundation impacts on diversified pasture biomass allocation and soil particulate organic matter stocks

Ribeiro,

Miquilini,

Lyon

et al. 2023

Grass and Forage Science

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“…Cereal–forage rotation presented little effects on rhizosphere microbial alpha diversity, but greater effects on beta diversity (Figures 1 and 2), which are consistent with previous results that despite lower microbial α‐diversity variations, obvious changes in β‐diversity could still be observed (Griffiths et al, 2011; Lozupone et al, 2007). The changes of microbial community composition could significantly promote plant production and soil multifunctionality (Li et al, 2021; Yan et al, 2022; Zhang et al, 2021). Some microbial groups shaped by rotation regime show strong effects on soil functions such as organic matter decomposition and nutrient cycling (D'Acunto et al, 2018; Fernandez et al, 2016; Nazaries et al, 2021).…”

Section: Discussionmentioning

confidence: 99%

“…We found that the variations in crop productivity were more correlated with the shifts of bacterial community rather than fungal community under cereal–forage rotation (Figure 4). Soil bacteria generally play critical roles in maintaining multiple functions and services of ecosystems (Bardgett & Van Der Putten, 2014; Guo et al, 2020; Wagg et al, 2014; Yan et al, 2022). To be specific, bacterial community presented stronger effects on the plant growth and ecosystem functions due to shorter turnover time and higher potential functional redundancy (Allison & Martiny, 2008; Lazcano et al, 2013; Zhong et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

“…The network analysis has been used as a powerful tool to explore complex interactions in many domains, providing ecological information of communities that cannot be obtained by traditional analytical methods (Deng et al, 2012; Tao et al, 2018). Higher network complexity might lead to higher community stability to support the stronger ecosystem functions (Hernandez et al, 2021; Yan et al, 2022; Yuan et al, 2021). In addition, the network modularity is an important metric to characterize the interspecific interactions, and in our study, each network module that contained at least five nodes was adopted.…”

Section: Methodsmentioning

confidence: 99%

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Cereal–forage rotation facilitates the colonization of particular rhizobacteria to improve crop productivity

et al. 2023

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Cereal–forage rotation is a crucial advantageous agricultural measure to accelerate sustainable agricultural development. However, the interaction mechanisms of crop productivity with soil characteristics and soil microbiome under this rotation regime remain controversial, leading to large uncertainties in assessing the stability of agroecosystems. The aim of this study is to investigate the effects of cereal–forage rotation on the rhizosphere microbial communities, soil properties, and crop productivity as well as the complex relationships among them. To achieve this, the rhizosphere soils of maize and alfalfa were collected from a field experiment with different cropping systems (rotation and monoculture systems of alfalfa or maize) to analyze the microbial communities and further to evaluate their roles on participating in soil nutrient cycling and improving crop productivity. Cereal–forage rotation significantly affected the microbial community compositions rather than diversities in rhizosphere soils, resulting in obvious changes of interspecific interactions. The increased alterations of crop productivity were more correlated with the shifts in bacterial community rather than fungal community, which was actuated by soil pH. Some bacterial recruitment under rotations was observed, primarily showing potential phosphorus cycling and nitrogen assimilation functions. Specifically, the accumulated beneficial rhizobacterial taxa included those with potential antagonistic activities (e.g., Brevundimonas, Gemmatimonas, Lysobacter, Pseudonocardia, and Pseudomonas) and positively responding to biological anabolism (e.g., Luteolibacter, Hyphomicrobium, and Sphingomonas). Such findings reveal that cereal–forage rotation could effectively shape rhizosphere soil microbial community structure and particularly lead to the recruitment of a group of salutary rhizobacteria, which would positively provide some valuable theoretical bases for the developments of high‐quality and high‐yield agriculture.

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“…There is growing evidence that the indirect effects of plants are as important as the direct effects of environmental stressors on the soil microbial community (De Vries et al, 2020). Under environmental conditions of salt stress, plant involvement may alter the abundance, diversity, and function of soil bacteria (Luo et al, 2021;Twerski et al, 2021;Yan et al, 2022), by changing the concentration of soil organic substrates and the enzymatic activity associated with elemental turnover (Liu et al, 2017;. Several studies have reported disparate results on the effects of different planting cycles on soil ecosystems.…”

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confidence: 99%

Planting Suaeda salsa improved the soil properties and bacterial community diversity in a coastal mudflat

Feng

Liu

et al. 2023

Land Degrad Dev

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Planting halophytes is an effective strategy to improve saline soils and prevent soil degradation. However, the effects of planting halophytes on saline soil biochemical properties and bacterial communities remain largely unexplored. In this study, soils were sampled from a field where Suaeda salsa was planted over a three‐year (TY) and one‐year (OY) period on a coastal saline mudflat to investigate the effects of S. salsa growth on soil chemical and biological properties. The results showed that OY and TY significantly reduced soil EC by 76.59% to 79.45% (0–10 cm soil layer) and 31.85% to 43.40% (10–20 cm soil layer) in comparison with the control without S. salsa planting (control). For the characteristics of soil enzyme activity, the alkaline phosphatase activity of TY was significantly reduced in the 0–10 cm soil layer (39.76%) and increased in the 10–20 cm layer (13.37%) relative to control. Alkaline phosphatase activity was the predominant factor affecting soil bacterial community composition. Moreover, the relative abundances of Proteobacteria and Chloroflexi were increased in both the OY and TY treatments compared to control, and were positively correlated with soil organic matter and available nitrogen. The complexity of the soil microbial network and the bacterial community diversity and richness were higher in OY and TY than in control. Our findings suggested that planting S. salsa benefited saline soil in coastal land by reducing soil salt stress, preventing salt soil degradation, and increasing soil bacterial community diversity.

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Grass-legume mixtures enhance forage production via the bacterial community

Cited by 31 publications

References 71 publications

Inundation impacts on diversified pasture biomass allocation and soil particulate organic matter stocks

Inundation impacts on diversified pasture biomass allocation and soil particulate organic matter stocks

Cereal–forage rotation facilitates the colonization of particular rhizobacteria to improve crop productivity

Planting Suaeda salsa improved the soil properties and bacterial community diversity in a coastal mudflat

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