Response of Soil Fungal Community Structure and Diversity to Saline Water Irrigation in Alluvial Grey Desert Soils

Guo, Huijuan; Huang, Zhi-Jie; Li, M.Q.; Min, Wei

doi:10.15666/aeer/1804_49694985

Cited by 8 publications

(4 citation statements)

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“…In fact, numerous studies have shown that fungal communities are influenced by soil salinity [48,49], where the relative abundance of the fungal phylum Ascomycota is increased [45,50,51]. Also, Mortielleromycota and Glomeromycota increased in the treated vines, in accordance with previous works [52,53]. In particular, Glomeromycota was identified as the keystone taxa in predicting the soil salinity soil fertility, and plant growth trait [54].…”

Section: Discussionsupporting

confidence: 85%

Exploring the Influence of Soil Salinity on Microbiota Dynamics in Vitis vinifera cv. “Glera”: Insights into the Rhizosphere, Carposphere, and Yield Outcomes

Colautti,

Mian,

Tomasi

et al. 2024

Diversity

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In a world grappling with the severe effects induced by climate change, one of the most significant concerns affecting agriculture is the gradual decline in water quality for irrigation associated with reduced rainfalls and the consequent increase in soil salinity. This issue is particularly crucial for grapevine cultivation (Vitis vinifera L.) and the associated winemaking industry. The aroma of the resulting wines and the yield parameters can be influenced both directly by water quality and indirectly due to the effects exerted by salinity on the microbiota, which directly impacts plant health. To gain insights into this topic, our study aimed to analyse the changes induced in the microbiota of both the rhizosphere and the carposphere due to salt stress using a metabarcoding approach, focusing on Vitis vinifera cv. Glera. The control plants were irrigated with rainwater, while the treated plants were irrigated with water containing salt (NaCl). Our findings revealed significant differences in the microbiota (both fungi and bacteria) of the rhizosphere and carposphere between the two treatments. For instance, the Shannon diversity index (i.e., alpha diversity) was lower in the treated plants compared to the control not-treated ones, whilst the beta diversity did not show any differences. Several microbial phyla exhibited better resilience to this abiotic stress (e.g., Ascomycota, Saccharomycetes, Acidobacteria, Proteobacteria, Bacteroidetes), shedding light on their impact on crucial bacterial and fungal groups essential for the subsequent winemaking stages. Additionally, the salt stress negatively affected the yield parameters. This study contributes valuable insights to the viticultural community, providing a deeper understanding of the complex interplay between soil characteristics, microbial communities, and their influence on productivity.

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Section: Discussionsupporting

confidence: 85%

Exploring the Influence of Soil Salinity on Microbiota Dynamics in Vitis vinifera cv. “Glera”: Insights into the Rhizosphere, Carposphere, and Yield Outcomes

Colautti,

Mian,

Tomasi

et al. 2024

Diversity

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“…Chytridiomycota, also known as chytrids, is one of the earliest diverging fungal lineages [ 56 ] and is widely distributed in soil and aquatic environments [ 57 ]. Recent research has revealed that Chytridiomycota were also found in many extreme environments, such as the desert [ 58 ], polar regions [ 59 ], and hydrothermal vents [ 60 ]. Chytridiomycota is able to penetrate some resistant structures and digest pollen, cellulose, chitin, and keratin to dissolved organic matter and dissolved inorganic matter [ 61 ], which play pivotal roles in the decomposition of particulate organic matter (POM) [ 62 ].…”

Section: Resultsmentioning

confidence: 99%

Succession of Fungal Community during Outdoor Deterioration of Round Bamboo

An,

Han,

Ren

et al. 2023

JoF

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Bamboo’s mechanical and aesthetic properties are significantly influenced by fungi. However, few studies have been conducted to investigate the structure and dynamics of fungal communities in bamboo during its natural deterioration. In this study, fungal community succession and characteristic variations of round bamboo in roofed and unroofed environments over a period of 13 weeks of deterioration were deciphered using high-throughput sequencing and multiple characterization methods. A total of 459 fungal Operational Taxonomic Units (OTUs) from eight phyla were identified. The fungal community’s richness of roofed bamboo samples showed an increasing trend, whereas that of unroofed bamboo samples presented a declining trend during deterioration. Ascomycota and Basidiomycota were the dominant phyla throughout the deterioration process in two different environments: Basidiomycota was found to be an early colonizer of unroofed bamboo samples. Principal Coordinates Analysis (PCoA) analysis suggested that the deterioration time had a greater impact on fungal community variation compared to the exposure conditions. Redundancy analysis (RDA) further revealed that temperature was a major environmental factor that contributed to the variation in fungal communities. Additionally, the bamboo epidermis presented a descending total amount of cell wall components in both roofed and unroofed conditions. The correlation analysis between the fungal community and relative abundance of three major cell wall components elucidated that Cladosporium was negatively correlated with hemicellulose in roofed samples, whereas they presented a positive correlation with hemicellulose and a negative correlation with lignin in unroofed samples. Furthermore, the contact angle decreased during the deterioration process in the roofed as well as unroofed samples, which could arise from the degradation of lignin. Our findings provide novel insights into the fungal community succession on round bamboo during its natural deterioration and give useful information for round bamboo protection.

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“…Our results showed that the diversity and richness of both bacteria and AMF were lower in saline–alkaline than in non‐saline–alkaline grassland (Table S3). Several previous studies have revealed that salt–alkali exposes microbial communities to strong selective pressures (King et al, 2022), which allows only salt‐tolerant microorganisms to proliferate, thereby reducing the alpha diversity of microbial communities (Guo et al, 2020; Setia et al, 2010). Our results also showed that the abundance of Proteobacteria , Gemmatimonadota , Bacteroidota , and Myxococcota was higher in saline–alkaline grassland than in non‐saline–alkaline grassland (Figure 2), corresponding with the previous studies.…”

Section: Discussionmentioning

confidence: 99%

Microbial community in the Leymus chinensis rhizosphere associates with its high production in mild saline–alkaline grassland

Guo,

Hao

et al. 2023

Land Degrad Dev

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Leymus chinensis is a dominant grass widely distributed in Central Asia, in both saline−alkaline and non‐saline−alkaline grasslands. However, the mechanisms underlying its saline−alkaline tolerance have not been explored from the perspective of rhizosphere microbial communities. We investigated L. chinensis rhizosphere microbial communities in both saline–alkaline and non‐saline–alkaline grasslands. It was found that the biomass of L. chinensis was remarkably higher in saline–alkaline than in non‐saline–alkaline habitat and that changes in the rhizosphere bacterial and arbuscular mycorrhizal fungi (AMF) communities had a greater effect on biomass than climate, soil moisture, nutrients, and salinity. We demonstrated that the bacteria and AMF in the rhizosphere of L. chinensis grown in saline–alkaline grassland differed from those in non‐saline–alkaline grassland, and the differences were associated with soil salinity or alkalinity. The co‐occurrence networks of bacteria and AMF and bacteria–AMF interaction networks in rhizosphere were complex and connected, with more nodes and edges and a higher average degree of nodes and modularity in the saline–alkaline grassland. More complex networks promoted plant tolerance and growth under salt–alkali stress. High number of microbial keystone taxa was related to the nutrient concentration in the soil and L. chinensis leaves, and more remarkable direct effects of the bacterial and AMF keystone communities on plant nutrient concentrations were demonstrated in saline–alkaline grassland. This indicates that bacterial and AMF communities in saline–alkaline grasslands are favorable for plant growth and nutrient uptake. This study provides an accurate and beneficial source of soil microbial assemblages for future plant–microbial joint remediation of the saline–alkaline ecosystems.

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Response of Soil Fungal Community Structure and Diversity to Saline Water Irrigation in Alluvial Grey Desert Soils

Cited by 8 publications

References 0 publications

Exploring the Influence of Soil Salinity on Microbiota Dynamics in Vitis vinifera cv. “Glera”: Insights into the Rhizosphere, Carposphere, and Yield Outcomes

Exploring the Influence of Soil Salinity on Microbiota Dynamics in Vitis vinifera cv. “Glera”: Insights into the Rhizosphere, Carposphere, and Yield Outcomes

Succession of Fungal Community during Outdoor Deterioration of Round Bamboo

Microbial community in the Leymus chinensis rhizosphere associates with its high production in mild saline–alkaline grassland

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