Climate and land cover shape the fungal community structure in topsoil

Mukhtar, Hussnain; Lin, Chiao-Ming; Wunderlich, Rainer Ferdinand; Cheng, Lien-Chieh; Ko, Min-Chun; Lin, Yu‐Pin

doi:10.1016/j.scitotenv.2020.141721

Cited by 25 publications

(19 citation statements)

References 41 publications

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“…The dominance of bacterial (Proteobacteria, Firmicutes, and Bacteroidetes) and fungal (Ascomycota and Basidiomycota) phyla detected in our CHS was the same as that observed in a hydroponic system [21] and soil ecosystems [13,14,40] analyzed in previous studies. This similarity in results can be associated with the (1) high dispersion rate of the aforementioned phyla, which successfully colonized our CHS, or (2) the phyla s behavior, which is typical of generalists, in relation to nutrient availability and their habitat.…”

Section: Discussionsupporting

confidence: 86%

“…The complete procedure for 16S rRNA and ITS gene amplification was the same as that used by Mukhtar et al and Lin et al [13,14].…”

Section: Dna Extraction and Molecular Analysismentioning

confidence: 99%

“…Microbes play various direct or indirect roles in carbon and nitrogen dynamics [13,14], and plant morphogenesis [15,16] at different stages of plant growth. Microbes are capable of detecting the plant host and colonizing the rhizosphere, and plants are capable of recognizing microbe-derived compounds and initiating their defense and growth strategies depending on the type of microorganisms encountered [17,18].…”

Section: Introductionmentioning

confidence: 99%

“…The abundance and diversity of microbial groups in a CHS are affected by multiple factors such as the crop type, the source of microbial contamination (e.g., substrates or irrigation water) [12], and the presence or absence of PGPMs [21]. In addition, the taxonomic diversity of fungi and bacteria is substantially affected by both abiotic and biotic variables and exhibits contrasting diversity patterns in response to environmental variables in various niches [13,25]; these may affect nutrient dynamics and, to some extent, pathogen survival (bacterial-fungal antagonism) in a CHS. Furthermore, literature suggests adapting the different composition of the nutrient solution at least three times during the cropping period of melon is recommended [26].…”

Section: Introductionmentioning

confidence: 99%

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Temporal Variability in the Rhizosphere Bacterial and Fungal Community Structure in the Melon Crop Grown in a Closed Hydroponic System

Lin

Mukhtar

et al. 2021

Agronomy

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Microbes can establish a pathogenetic or symbiotic relationship with plants in soil and aquatic ecosystems. Although change in bacterial and fungal community in soil and their interaction with plants have been widely studied, little is known about their community structure in hydroponic systems across plant growth stages under different nutrient treatments. This study used next-generation sequencing analysis to assess the temporal changes in melon rhizosphere bacterial and fungal community structure across six different nutrient treatments. We found significant changes in the microbial community composition (especially for bacteria) between growth stages (R = 0.25–0.63, p < 0.01) than nutrient treatments. Proteobacteria dominated the bacterial community at the phylum level across melon growth stages (59.8% ± 16.1%). The genera Chryseobacterium, Pseudomonas, and Massilia dominated the rhizosphere in the flowering and pollination stage, while Brevibacillius showed the highest relative abundance in the harvesting stage. However, the rhizosphere was dominated by uncultured fungal taxa, likely due to the application of fungicides (Ridomil MZ). Further, linear regression analysis revealed a weak influence of bacterial community structure on melon yield and quality, while fruit weight and quality moderately responded to Mg and K deficiency. Nevertheless, the relative abundance of bacterial genus Chryseobacterium in the vegetative stage showed a strong correlation with fruit weight (R2 = 0.75, p < 0.05), while genera Brevibacillus, Lysobacter, and Bosea in late growth stages strongly correlated with fruit sweetness. Overall, temporal variability in the microbial (especially bacterial) community structure exceeds the variability between nutrient treatments for the given range of nutrient gradient while having little influence on melon yield.

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Section: Discussionsupporting

confidence: 86%

“…The complete procedure for 16S rRNA and ITS gene amplification was the same as that used by Mukhtar et al and Lin et al [13,14].…”

Section: Dna Extraction and Molecular Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Temporal Variability in the Rhizosphere Bacterial and Fungal Community Structure in the Melon Crop Grown in a Closed Hydroponic System

Lin

Mukhtar

et al. 2021

Agronomy

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“…The species abundance and composition of the microbiota are important factors in determining the quality of the grain 15 . Throughout the growing season, weather conditions such as temperature and humidity influence the distribution of the infecting fungal species and lead to geographical variation in the species distribution [28][29][30][31] . As the main cultivar of naked oat in China, Bayou 13 is planted in different ecological regions, including Tibet, Shanxi Province, Gansu Province, Inner Mongolia, Qinghai Province and Hebei Province.…”

Section: Community Structure Of Fungal Pathogens Causing Spikelet Rotmentioning

confidence: 99%

Community structure of fungal pathogens causing spikelet rot disease of naked oat from different ecological regions of China

Liu

et al. 2021

Sci Rep

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Spikelet rot disease (SRD) is an emerging disease of the grain surface of naked oat in China that affects both grain yield and quality. The typical symptom is discoloration from the black structures of the causal fungi. Here, we investigated the fungal communities on the grain surfaces of cultivar Bayou 13 grown in ten ecological oat-producing regions of China, to identify the main pathogens of naked oat SRD. Our results showed that the growth of Alternaria spp. and Davidiella spp. exhibited a competitive relationship and was mainly affected by the elevations of all 10 ecological regions. The dominant pathogens were Davidiella spp. in Shannan Prefecture in Tibet and Haidong Prefecture in Qinghai Province and Alternaria spp. in the other eight regions. The ratios of black pathogens of interest to all pathogens in Shannan Prefecture and Haidong Prefecture were significantly lower than those of the other eight regions, thus indicating that SRD mainly occurred in regions below 2000 m (elevation). We isolated black fungal pathogens from grain surfaces and deduced that they were Alternaria spp. by sequence comparison. The blackened appearance of the grain surfaces was more evident under spray inoculation with a spore suspension of Alternaria than under the control in greenhouse experiments. The recovered pathogen was the same as the pathogen used for inoculation. We thus concluded that Alternaria alone causes naked oat SRD and mainly infects naked oat in regions below 2000 m, which provides a basis for the recognition and management of SRD of naked oat.

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Organic Fertilizers Shape Soil Microbial Communities and Increase Soil Amino Acid Metabolites Content in a Blueberry Orchard

Tan

Wang

et al. 2022

Microb Ecol

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Climate and land cover shape the fungal community structure in topsoil

Cited by 25 publications

References 41 publications

Temporal Variability in the Rhizosphere Bacterial and Fungal Community Structure in the Melon Crop Grown in a Closed Hydroponic System

Temporal Variability in the Rhizosphere Bacterial and Fungal Community Structure in the Melon Crop Grown in a Closed Hydroponic System

Community structure of fungal pathogens causing spikelet rot disease of naked oat from different ecological regions of China

Organic Fertilizers Shape Soil Microbial Communities and Increase Soil Amino Acid Metabolites Content in a Blueberry Orchard

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