Contrasting effects of Rhizophagus irregularis versus bacterial and fungal seed endophytes on Trifolium repens plant-soil feedback

Idbella, Mohamed; Bonanomi, Giuliano; Filippis, Francesca De; Amor, Ghita; Chouyia, Fatima Ezzahra; Fechtali, Taoufiq; Mazzoleni, Stefano

doi:10.1007/s00572-020-01003-4

Cited by 17 publications

(3 citation statements)

References 95 publications

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“…Although there were differences in the endophytic bacterial taxa of qingke seeds from different sources owing to climatic conditions, sowing strategies, and breeding processes, most of the major differential bacterial taxa had plant growth-promoting and biological control traits. It is worth noting that the main differential endophytic bacterial taxa of Shigatse landraces can interact with AMF, and AMF and seed endophytic microbiota have been shown to affect biotic or abiotic soil properties directly or indirectly, thereby affecting plant growth and communities ( Idbella et al., 2021 ). The interaction between the qingke seed endophytic bacterial community and the soil microbiota may play a positive role in the establishment of qingke seedlings under harsh climatic conditions.…”

Section: Discussionmentioning

confidence: 99%

Deciphering the core seed endo-bacteriome of the highland barley in Tibet plateau

Zhao¹,

Wang²,

Guo³

et al. 2022

Front. Plant Sci.

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Highland barley (Hordeum vulgare var. nudum (L.) Hook.f., qingke) has unique physical and chemical properties and good potential for industrial applications. As the only crop that can be grown at high altitudes of 4200–4500 m, qingke is well adapted to extreme habitats at high altitudes. In this study, we analysed the seed bacterial community of 58 genotypes of qingke grown in different regions of Tibet, including qingke landraces, modern cultivars, and winter barley varieties, and characterised endophytic bacterial communities in seeds from different sources and the core endo-bacteriome of qingke. This study aim to provide a reference for the application of seed endophytes as biological inoculants for sustainable agricultural production and for considering microbe-plant interactions in breeding strategies. A total of 174 qingke seed samples from five main agricultural regions in Tibet were collected and subjected to investigation of endophytic endo-bacteriome using high-throughput sequencing and bioinformatics approaches. The phyla of endophytic bacteria in qingke seeds from different sources were similar; however, the relative proportions of each phylum were different. Different environmental conditions, growth strategies, and modern breeding processes have significantly changed the community structure of endophytic bacteria in seeds, among which the growth strategy has a greater impact on the diversity of endophytic bacteria in seeds. Seeds from different sources have conserved beneficial core endo-bacteriome. The core endo-bacteriome of qingke seeds dominated by Enterobacteriaceae may maintain qingke growth by promoting plant growth and assisting plants in resisting pests and diseases. This study reveals the core endo-bacteriome of qingke seeds and provides a basis for exploiting the endophytic endo-bacteriome of qingke seeds.

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Section: Discussionmentioning

confidence: 99%

Deciphering the core seed endo-bacteriome of the highland barley in Tibet plateau

Zhao¹,

Wang²,

Guo³

et al. 2022

Front. Plant Sci.

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“…The success of a production technique could depend on controlling the factors that influence the development of arbuscular mycorrhizal fungi (AMF). AMF are another group of symbiotic soil microbes capable of directly or indirectly influencing soil properties, affecting plant growth and community structure [28,29]. Their multiple beneficial attributes allow them to be involved in many processes, such as biofertilization, biostimulation, and bioprotection [30].…”

Section: Role Of Arbuscular Mycorrhizal Fungi In Promoting Crop Growthmentioning

confidence: 99%

Mycorrhizal Symbiosis for Sustainable Optimization of Tropical Agriculture: A Review of Research

Aguégué¹,

Akpodé²,

Adjobimey³

et al. 2023

Symbiosis in Nature

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Excessive application of chemical fertilizers and other agrochemicals can cause significant imbalances in soils and agricultural ecosystems. To minimize these impacts, biofertilizers and organic fertilizers are needed to maintain a sustainable production system. The use of subterranean microorganisms in agriculture to stimulate plant growth and improve yields has recently received increasing interest. In this context, mycorrhizae represent a viable solution to mitigate these adverse effects. Mycorrhizal fungi are able to form a symbiotic relationship with the roots of plants in the environment. Mycorrhizal fungus helps the plant to absorb nutrients and water. In addition, mycorrhizal fungi play a crucial role in storing carbon (C) in the soil. Most previous studies have just considered the effects of AMF species on a specific crop in one particular area but have not assessed the balance of AMF in production systems in tropical agriculture. This consideration should allow for the optimization of cropping practices through a review of the work on the use of AMF in tropical agriculture production systems. In this paper, we will discuss, through different examples of experiments carried out in the tropics, the performance of different strategies for managing the potential of AMF to maintain a sustainable production system.

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“…Therefore, dynamic and complex feedback mechanisms exist between aboveground vegetation and the belowground microbial community (Xiang et al, 2014). Moreover, microbial species are actors in the plant-soil feedback that can alter the outcome of plant competition and drive the process of plant community succession (Bever, 2003;Idbella et al, 2021). For this reason, SE may have lasting consequences for grassland ecosystem restoration and management, as shifts in microbiota composition may facilitate long-term succession from grassland to shrub/forest ecosystems (Yannarell et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Specific microbiome signatures under the canopy of Mediterranean shrubs

Idbella

Filippis

Zotti

et al. 2022

Applied Soil Ecology

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Background: Shrub encroachment (SE) is a phenomenon in which grasses and herbaceous vegetation are replaced by woody shrubs. The progressive spread of shrubs represents a form of land cover change that is widespread in arid and semi-arid grassland ecosystems. Many previous studies have highlighted the effects of SE on soil respiration rates and nutrient storage, but little is known about its belowground effects. While previous work considered shrubs to be nonspecies speci c or as a single intervening species, we selected an Ampelodemsos mauritanicus grassland and six coexisting shrubs (i.e. Pistacia lentiscus L., Juniperus phoenicea L., Myrtus communis L., Rosmarinus o cinalis L., Olea europaea L., and Euphorbia dendroides L.) to investigate the effects of their encroachment on soil microbiota. We used high-throughput sequencing, coupled with soil chemical analyses and litter using 13C CPMAS NMR spectroscopy.Results: Results showed a strong in uence of shrub canopy on bacterial and fungal community diversity, species richness and overall community composition in the soil. Litter chemistry was dominated by O-alkyl-C, with the highest content in Ampelodesmsos and Euphorbia, but richer of aromatic C in Pistacia and Rosmarinus. Bacterial diversity was highest under Juniperus and Euphorbia, while lowest under Rosmarinus and grassland. Conversely, fungal diversity was highest under Olea and Euphorbia, while lowest under Myrtus and grassland. Moreover, soil C and N contents were highest under Olea, Pistacia and Myrtus compared to the other canopies. In addition, grassland and Rosmarinus had the highest Fe content. Furthermore, increased co-occurrence network size and connectivity were recorded under shrubs compared to the grassland matrix.Conclusions: Our results suggest that the individual effect of each shrub on the grassland matrix depends mainly on the chemical properties of the shrub litter, which alters the chemical pro le of the soil and, in cascade, shapes the associated microbiota.

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Contrasting effects of Rhizophagus irregularis versus bacterial and fungal seed endophytes on Trifolium repens plant-soil feedback

Cited by 17 publications

References 95 publications

Deciphering the core seed endo-bacteriome of the highland barley in Tibet plateau

Deciphering the core seed endo-bacteriome of the highland barley in Tibet plateau

Mycorrhizal Symbiosis for Sustainable Optimization of Tropical Agriculture: A Review of Research

Specific microbiome signatures under the canopy of Mediterranean shrubs

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