Temporal and Cultivar-Specific Effects on Potato Root and Soil Fungal Diversity

Loit, Kaire; Soonvald, Liina; Astover, Alar; Runno-Paurson, Eve; Öpik, Maarja; Tedersoo, Leho

doi:10.3390/agronomy10101535

Cited by 12 publications

(8 citation statements)

References 66 publications

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“…The findings showed that under the same soil type and conditions, different RP cultivars induced a shift in soil fungal communities. This is in line with previous reports showing that different cultivars of potato ( Solanum tuberosum L.) and maize had significantly shifted soil fungal diversity and composition [ 55 , 56 ]. For instance, Loit et al [ 55 ] found that among twenty-one potato cultivars, Viviana, Solist, Glorieta, and Concordia significantly affect the overall fungal, pathogen, and saprotrophic community composition.…”

Section: Discussionsupporting

confidence: 93%

Soil fungal community structure and function response to rhizoma perennial peanut cultivars

Daraz,

Erhunmwunse,

Dubeux

et al. 2024

BMC Plant Biol

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Background Crop-associated microorganisms play a crucial role in soil nutrient cycling, and crop growth, and health. Fine-scale patterns in soil microbial community diversity and composition are commonly regulated by plant species or genotype. Despite extensive reports in different crop or its cultivar effects on the microbial community, it is uncertain how rhizoma peanut (RP, Arachis glabrata Benth.), a perennial warm-season legume forage that is well-adapted in the southern USA, affects soil microbial community across different cultivars. Results This study explored the influence of seven different RP cultivars on the taxonomic composition, diversity, and functional groups of soil fungal communities through a field trial in Marianna, Florida, Southern USA, using next-generation sequencing technique. Our results showed that the taxonomic diversity and composition of the fungal community differed significantly across RP cultivars. Alpha diversity (Shannon, Simpson, and Pielou’s evenness) was significantly higher in Ecoturf but lower in UF_Peace and Florigraze compared to other cultivars (p < 0.001). Phylogenetic diversity (Faith’s PD) was lowest in Latitude compared to other cultivars (p < 0.0001). The dominant phyla were Ascomycota (13.34%), Mortierellomycota (3.82%), and Basidiomycota (2.99%), which were significantly greater in Florigraze, UF_Peace, and Ecoturf, respectively. The relative abundance of Neocosmospora was markedly high (21.45%) in UF_Tito and showed large variations across cultivars. The relative abundance of the dominant genera was significantly greater in Arbrook than in other cultivars. There were also significant differences in the co-occurrence network, showing different keystone taxa and more positive correlations than the negative correlations across cultivars. FUNGuild analysis showed that the relative abundance of functional guilds including pathogenic, saprotrophic, endophytic, mycorrhizal and parasitic fungi significantly differed among cultivars. Ecoturf had the greatest relative abundance of mycorrhizal fungal group (5.10 ± 0.44), whereas UF_Peace had the greatest relative abundance of endophytic (4.52 ± 0.56) and parasitic fungi (1.67 ± 0.30) compared to other cultivars. Conclusions Our findings provide evidence of crop cultivar’s effect in shaping fine-scale fungal community patterns in legume-based forage systems. Graphical abstract

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Section: Discussionsupporting

confidence: 93%

Soil fungal community structure and function response to rhizoma perennial peanut cultivars

Daraz,

Erhunmwunse,

Dubeux

et al. 2024

BMC Plant Biol

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“…Our research was conducted at one of the University of Wyoming's research and extension facilities, with other potential host crops being grown in the same soils over the past several growing seasons. Having acknowledged this, previous research found a similar phenomenon [25,45], with Fusarium being one of the dominant genera in soils under potato. This suggests that even though our experimental plots may have been enriched due to the planting of successive susceptible crop species, the abundance of Fusarium spp.…”

Section: Discussionmentioning

confidence: 70%

An Examination of Fungal and Bacterial Assemblages in Bulk and Rhizosphere Soils under Solanum tuberosum in Southeastern Wyoming, USA

Custer

Diepen

Stump

2021

Applied Microbiology

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Solanum tuberosum, commonly known as potato, is the most important non-cereal crop in the world. However, its cultivation is prone to disease and other issues. In recent years, a newfound interest in the soil microbiome and the potential benefits it may convey has led researchers to study plant–microbe interactions in great detail and has led to the identification of putative beneficial microbial taxa. In this survey, we examined fungal and bacterial diversity using high-throughput sequencing in soils under a potato crop in southeastern Wyoming, USA. Our results show decreased microbial diversity in the rhizosphere, with increases in the abundances of arbuscular mycorrhizal fungi as well as pathogenic microbes. We show coarse taxonomic differences in microbial assemblages when comparing the bulk and rhizosphere soils for bacteria but not for fungi, suggesting that the two kingdoms respond differently to the selective pressures of the rhizosphere. Using cooccurrence network analysis, we identify microbes that may serve as keystone taxa and provide benefits to their host plants through competitive exclusion of detrimental pathogenic taxa and increased nutrient availability. Our results provide additional information on the structure and complexity of the potato rhizosphere microbiome and highlight candidate taxa for microbial isolation and inoculation.

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“…The rhizosphere is considered a "hot-spot" for microbial abundance and metabolic activity due to the nutrients released by plant roots (Kuzyakov and Blagodatskaya, 2015). Plant cultivar is a primary factor that determining overall fungal, pathogen and saprotrophic community composition (Loit et al, 2020). Consideration that, root exudates contain released ions i.e., H + , inorganic acids, oxygen and water, but mainly consist of carbon-based compounds.…”

Section: Discussionmentioning

confidence: 99%

Assessment of Bion, Two Commercial Bio-products and Other Organic Amendments for Management of Potato Brown-Rot under Field Conditions

Youssef

Hassan

2022

Egyptian Journal of Phytopathology

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The efficacy of using Bion, two commercial bio-products and organic amendments on reduction of potato brown rot and assessment of the susceptibility of eight potato cultivars to the disease were evaluated. Field experiments during 2019/20 and 2020/21 growing seasons at Giza governorate, Egypt revealed that all the tested treatments effectively reduced the bacterial wilt under the natural infection. The combination treatments of Bion + Bio-ARC + Bio-Zeid and Bio-ARC + old Balady manure + chicken manure were the highly efficient ones in lowering the infection, being 2.3% wilt, 1.9% infected tubers and 2.0% wilt, 1.4% infected tubers, respectively. Additionally, Mondial potato cultivar was the least susceptible one associated with high rhizospheric microflora content. Using the combination of the resistance inducer Bion (BTH) with two commercial bio-products (Bio-ARC and Bio-Zeid) and two organic manures (Balady and chicken) are promising alternative methods for reducing potato bacterial wilt. Besides, there were remarkable variations in the values of free, conjugated and total phenols of the tested 8 potato cultivars, where Mondial cultivar recorded the highest values, Spunta the lowest values and the other cultivars recorded intermediate values.

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Temporal and Cultivar-Specific Effects on Potato Root and Soil Fungal Diversity

Cited by 12 publications

References 66 publications

Soil fungal community structure and function response to rhizoma perennial peanut cultivars

Soil fungal community structure and function response to rhizoma perennial peanut cultivars

An Examination of Fungal and Bacterial Assemblages in Bulk and Rhizosphere Soils under Solanum tuberosum in Southeastern Wyoming, USA

Assessment of Bion, Two Commercial Bio-products and Other Organic Amendments for Management of Potato Brown-Rot under Field Conditions

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