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 20 publications

(5 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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“…In addition, although the use of synthetic communities [ 109 , 110 ] rather than a single strain should be considered to explore the possible phenotypic characteristics and functions of seed endophytes based on omics, it is a major challenge to understand the interaction between seed endophytes and host plants and other microbes, which is a complex process that may depend on endophyte species, environmental conditions, and gene types of host plants. For example, the interaction of seed fungi and bacteria with arbuscular mycorrhizal fungi ( Rhizophagus irrigularis ) has a negative feedback effect on the growth of Trifolium repens , and this negative effect may be competition over resource allocation and temporal priority as well as the release of secondary metabolites [ 111 ]. Another study also elaborated that competition for photosynthetic products and plant resources could enable seed-borne Epichloë sp.…”

Section: Functions Of Seed Endophytes In Response To Environmental St...mentioning

confidence: 99%

Assembly and Function of Seed Endophytes in Response to Environmental Stress

Wang

Zhang

2023

J. Microbiol. Biotechnol.

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Seeds are colonized by diverse microorganisms that can improve the growth and stress resistance of host plants. Although understanding the mechanisms of plant endophyte-host plant interactions is increasing, much of this knowledge does not come from seed endophytes, particularly under environmental stress that the plant host grows to face, including biotic ( e.g. , pathogens, herbivores and insects) and abiotic factors ( e.g. , drought, heavy metals and salt). In this article, we first provided a framework for the assembly and function of seed endophytes and discussed the sources and assembly process of seed endophytes. Following that, we reviewed the impact of environmental factors on the assembly of seed endophytes. Lastly, we explored recent advances in the growth promotion and stress resistance enhancement of plants, functioning by seed endophytes under various biotic and abiotic stressors.

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

Cited by 20 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

Assembly and Function of Seed Endophytes in Response to Environmental Stress

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

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