Exploring the secrets of hyphosphere of arbuscular mycorrhizal fungi: processes and ecological functions

Wang, Fei; Zhang, Lin; Zhou, Jiachao; Rengel, Zed; George, Timothy S.; Feng, Gu

doi:10.1007/s11104-022-05621-z

Cited by 75 publications

(23 citation statements)

References 181 publications

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“…This indicates that F. mosseae can promote the secretion of organic acids in P. simonii × P. nigra to improve the soil environment, but which organic acid secretion is affected needs further study. In addition to inducing plants to secrete organic acids, the mycelia will also secrete organic acids for mineral weathering, while absorbing metal cations in the soil and releasing H + , thereby reducing the pH of the rhizosphere soil ( Luthfiana et al., 2021 ; Wang et al., 2022a ). Our findings also support this view.…”

Section: Discussionmentioning

confidence: 99%

Arbuscular mycorrhizal fungi affect the expression of PxNHX gene family, improve photosynthesis and promote Populus simonii×P. nigra growth under saline-alkali stress

et al. 2023

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IntroductionSaline-alkali stress seriously endangers the normal growth of Populus simonii×P. nigra. Arbuscular mycorrhizal (AM) fungi can enhance the saline-alkali tolerance of plants by establishing a symbiotic relationship with them.MethodsIn this study, a pot experiment was conducted to simulate a saline-alkali environment where Populus simonii×P. nigra were inoculated with Funneliformis mosseae to explore their effects on the saline-alkali tolerance of Populus simonii×P. nigra.Results and DiscussionOur results show that a total of 8 NHX gene family members are identified in Populus simonii×P. nigra. F. mosseae regulate the distribution of Na+ by inducing the expression of PxNHXs. The pH value of poplar rhizosphere soil is reduced, result in the promote absorption of Na+ by poplar, that ultimately improved the soil environment. Under saline-alkali stress, F. mosseae improve the chlorophyll fluorescence and photosynthetic parameters of poplar, promote the absorption of water, K+ and Ca2+, thus increase the plant height and fresh weight of aboveground parts, and promote the growth of poplar. Our results provide a theoretical basis for further exploring the application of AM fungi to improve the saline-alkali tolerance of plants.

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Section: Discussionmentioning

confidence: 99%

Arbuscular mycorrhizal fungi affect the expression of PxNHX gene family, improve photosynthesis and promote Populus simonii×P. nigra growth under saline-alkali stress

et al. 2023

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“…The AMF consortium used in this study as inoculant was obtained from the same site as TGFG411 after trap plant multiplication of its propagules. Through the release of a variety of soluble carbohydrates from their hyphal exudate, AMF stimulate a range of beneficial soil microbiota (mostly bacteria; Wang et al, 2022). It is well known that a diverse microbial community is associated with AMF extraradical mycelia (Faghihinia et al, 2023), spores and sporocarps (Zhang et al, 2022).…”

Section: Discussionmentioning

confidence: 99%

Alone as effective as together: AMF and Trichoderma inoculation boost maize performance but differentially shape soil and rhizosphere microbiota

Fernandez‐Gnecco,

Gégu,

Covacevich

et al. 2024

J of Sust Agri & Env

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IntroductionInoculation of plants with beneficial microorganisms may improve plant performance yet suffers from efficacy variability. A solution might be the combined application of different inoculants as consortium. The objective of the present study was to evaluate the effects of single or combined inoculation of Trichoderma harzianum, strain TGFG411, and a consortium of arbuscular mycorrhizal fungi (AMF) on plant growth, and native microbial communities (here bacteria/archaea, fungi and AMF) in root‐associated soil (RAS) and rhizosphere (RH), that is, soil loosely or tightly attached to the roots, respectively.Materials and MethodsA greenhouse experiment was carried out with non‐sterile agricultural soil and the model crop maize, which was single inoculated with either TGFG411 or AMF or received a combined inoculation of TGFG411 + AMF. Control plants received only water. Seven weeks after the second AMF inoculation, the plant growth promotion capacity of the inoculants was measured based on shoot and root parameters. Furthermore, RAS and RH microbiota (fungi including AMF, bacteria and archaea) were assessed via a combination of different cultivation‐dependent, microscopic and DNA‐based methods.ResultsAfter 7 weeks of maize growth, both single and combined inoculation of AMF and TGFG411 enhanced shoot dry weight and led to a significant reduction in root biomass. The TGFG411 strain successfully established in the soil. However, no definite evidence for the establishment of the inoculated AMF was found. Single or combined inoculation of TGFG411 and AMF modified the composition of total bacterial in the RH, whereas modulated total fungal communities in the RAS.ConclusionThe combined inoculation did not result in a significant improvement of plant performance compared with single inoculation likely due to optimal nutrient supply. However, samples receiving the combined inoculation exhibited a distinct modulation of the native RAS/RH microbiota, which may influence the inoculant efficacy under less favourable conditions.

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“…For this, the recently available chromosome‐level genome datasets from model AMF are important resources for making comparisons (Yildirir et al ., 2022; Manley et al ., 2023; Sperschneider et al ., 2023). For example, gene expression may shift with varying levels of acidity in the surroundings of AMF hyphae (Bago & Azcón‐Aguilar, 1997; Wang et al ., 2022) as a means to enhance micronutrient availability (Rengel, 2015), as seen in the rhizosphere of plants. Overall, the occurrence and relative importance of these different mechanisms via which AMF can realistically promote metallic micronutrient uptake at the plant–soil interface, as well as the identification and regulation of the fungal and plant gene families involved in these mechanisms, still await detailed study (Fig.…”

Section: Amf Contribute To Metallic Micronutrient Uptake In Plantsmentioning

confidence: 99%

“…Arbuscular mycorrhizal fungi (AMF) are obligate biotrophs in symbiotic partnership with plant roots and have a fundamental role in agriculture. They are widely recognized as fundamental actors to enhance crop nutrition, especially in terms of macronutrients and play a role in plant water acquisition, protection against pathogens and tolerance to metal(oid)s (Sosa‐Hernández et al ., 2019; Janeeshma & Puthur, 2020; Wang et al ., 2022).…”

Section: Introductionmentioning

confidence: 99%

The potential of arbuscular mycorrhizal fungi to enhance metallic micronutrient uptake and mitigate food contamination in agriculture: prospects and challenges

Moreno Jiménez,

Ferrol,

Corradi

et al. 2023

New Phytologist

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SummaryOptimizing agroecosystems and crops for micronutrient uptake while reducing issues with inorganic contaminants (metal(loid)s) is a challenging task. One promising approach is to use arbuscular mycorrhizal fungi (AMF) and investigate the physiological, molecular and epigenetic changes that occur in their presence and that lead to changes in plant metal(loid) concentration (biofortification of micronutrients or mitigation of contaminants). Moreover, it is important to understand these mechanisms in the context of the soil microbiome, particularly those interactions of AMF with other soil microbes that can further shape crop nutrition. To address these challenges, a two‐pronged approach is recommended: exploring molecular mechanisms and investigating microbiome management and engineering. Combining both approaches can lead to benefits in human health by balancing nutrition and contamination caused by metal(loid)s in the agro‐ecosystem.

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Exploring the secrets of hyphosphere of arbuscular mycorrhizal fungi: processes and ecological functions

Cited by 75 publications

References 181 publications

Arbuscular mycorrhizal fungi affect the expression of PxNHX gene family, improve photosynthesis and promote Populus simonii×P. nigra growth under saline-alkali stress

Arbuscular mycorrhizal fungi affect the expression of PxNHX gene family, improve photosynthesis and promote Populus simonii×P. nigra growth under saline-alkali stress

Alone as effective as together: AMF and Trichoderma inoculation boost maize performance but differentially shape soil and rhizosphere microbiota

The potential of arbuscular mycorrhizal fungi to enhance metallic micronutrient uptake and mitigate food contamination in agriculture: prospects and challenges

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