Effect of Trichoderma viride on rhizosphere microbial communities and biocontrol of soybean root rot

Frontiers in Microbiology, Год журнала: 2023, Номер 14

Опубликована: Июнь 2, 2023

Biological seed dressing is a cost-effective means to protect plant roots from pathogens. Trichoderma generally considered as one of the most common biological dressings. However, there still dearth information on effects microbial community rhizosphere soil. High-throughput sequencing was used analyze viride and chemical fungicide soybean The results showed that both T. could significantly reduce disease index (15.11% for 17.33% Chemical), while no significant difference observed between them. Both affect structure community, they increased β-diversity relative abundance Saprotroph-Symbiotroph. Chemical complexity stability co-occurrence network. beneficial maintaining network increasing complexity. There were 31 bacterial genera 21 fungal correlated with index. Furthermore, several potential pathogenic microorganisms also positively index, such Fusarium, Aspergillus, Conocybe, Naganishia, Monocillium. From this work, may be substitute control root rot more friendly soil microecology.

Язык: Английский

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Grazing alters the relationship between alpine meadow biodiversity and ecosystem multifunctionality

The Science of The Total Environment, Год журнала: 2023, Номер 898, С. 165445 - 165445

Опубликована: Июль 12, 2023

Язык: Английский

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Influence of Exogenous Abscisic Acid on Germination and Physiological Traits of Sophora viciifolia Seedlings under Drought Conditions

Applied Sciences, Год журнала: 2024, Номер 14(11), С. 4359 - 4359

Опубликована: Май 21, 2024

This study investigates the role of abscisic acid (ABA) in bolstering drought resistance plants, employing “Panjiang Sophora viciifolia” as subject. A simulated scenario was created using polyethylene glycol (PEG-6000) to examine impact varying intensities (0%, 5%, 20% PEG) and ABA concentrations (0, 10, 50, 100, 200 mg·L−1) on germination physiological parameters viciifolia. The results showed that absence ABA, rate (GR), potential (GP), index (GI) S. viciifolia seeds initially increased then decreased with escalating PEG-induced stress. At stress levels 5% 20%, activities peroxidase (POD) catalase (CAT), along malondialdehyde (MDA) content, were significantly higher than control (CK) (p < 0.05). In response stress, adapted by modulating behavior, augmenting content osmoregulatory substances, boosting activity protective enzymes. addition markedly enhanced GR, GE, GI, POD, superoxide dismutase (SOD), CAT, well MDA proline (Pro) under conditions Relative CK, low (10–100 resulted GP, SOD, MDA, Pro levels; whereas, at a concentration (200 mg·L−1), although GI decreased, increased. Through principal component analysis membership function comprehensive evaluation, it determined administering 50 mg·L−1 most effective enhancing seedlings.

Язык: Английский

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Understanding the drivers of ecosystem multifunctionality in the Mongolian steppe: The role of grazing history and resource input

Agriculture Ecosystems & Environment, Год журнала: 2023, Номер 359, С. 108748 - 108748

Опубликована: Сен. 20, 2023

Язык: Английский

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Grazing practices affect phyllosphere and rhizosphere bacterial communities of Kobresia humilis by altering their network stability

The Science of The Total Environment, Год журнала: 2023, Номер 900, С. 165814 - 165814

Опубликована: Июль 29, 2023

Язык: Английский

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Establishment of Biocontrol Agents and Their Impact on Rhizosphere Microbiome and Induced Grapevine Defenses Are Highly Soil-Dependent

Phytobiomes Journal, Год журнала: 2023, Номер 8(2), С. 111 - 127

Опубликована: Ноя. 7, 2023

With a reduction in available chemical treatments, there is an increased interest biological control of grapevine trunk diseases. Few studies have investigated the impact introducing beneficial microorganisms rhizosphere on existing indigenous soil microbiome. In this study, we explored effect two biocontrol agents (BCAs), Trichoderma atroviride SC1 (Ta SC1) (Vintec; Certis Belchim) and Bacillus subtilis PTA-271 (Bs PTA-271), bacterial fungal microbiome as well plant defense expression using high-throughput amplicon sequencing quantitative real-time polymerase chain reaction (PCR), respectively. Additionally, quantified both Ta Bs over time droplet digital PCR. The was more affected by factors such type, BCA treatment, sampling compared with Specifically, application produced negative impacts diversity, whereas BCAs did not affect diversity. Interestingly, survival establishment showed opposite trends depending indicating that physicochemical properties soils role establishment. Fungal co-occurrence networks were less complex than but highly impacted application. Soils treated presented stable networks, higher number positive correlations. Induced defenses also differed according to soil, being inoculation sandy soil. findings research emphasize relationships among highlight significance taking into account various factors, time, their influence structure dynamics microbial communities.

Язык: Английский

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Effects of grazing in different intensities and 10‐year grazing exclusion on soil bacterial community composition and interaction complexity in alpine grasslands of the Qinghai‐Tibet Plateau

Land Degradation and Development, Год журнала: 2024, Номер 35(6), С. 2274 - 2283

Опубликована: Фев. 9, 2024

Abstract To decrease the detrimental consequences of overgrazing on sustainability grassland ecosystems, many countries have developed policies grazing exclusions. However, compared with grazing, how exclusion modifies soil bacterial community and associated environmental drivers is inadequately understood. Here, we studied effects in different intensities (no light, moderate, heavy grazing) 10 years' bacteria factors Qinghai‐Tibet Plateau. The results showed significant changes composition among all treatments. After exclusion, rather than diversity was significantly from that without treatment. Under regulated by total nitrogen nitrate nitrogen. Grazing treatments decreased complexity co‐occurrence network, but increased complexity. This study found substantially affected structure diversity, hardly alleviated historical structure. findings extended understanding communities grasslands respond to providing a crucial scientific foundation for evaluating sustainable management.

Язык: Английский

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Characteristics of bacterial communities in aquatic ecosystems near the Collins glacial (Fildes Peninsula, Antarctica)

Ecological Indicators, Год журнала: 2024, Номер 160, С. 111788 - 111788

Опубликована: Март 1, 2024

Bacteria are vital for maintaining ecosystem function in the rapidly changing environment, but limited data was reported regarding characteristics of bacterial communities along regional-scale aquatic ecosystems on Fildes Peninsula (Antarctica), where vulnerable habitats have been affected by dramatic retreat Collins glacier. This study revealed differences and hidden connections two (periglacial lakes coves) near glacier using amplicon sequencing. The results showed periglacial coves harbored 568 388 unique OTUs, respectively, also shared 199 common which meant there existed some linkages between ecosystems. Compared to lakes, exhibited decreased richness Shannon index (P < 0.05) were dominated Proteobacteria, Cyanobacteria, Bacteroidota, while Actinobacteria, Proteobacteria. Periglacial significantly distinct communities, their β-diversity both turnover. Indicator species identified coves, such as Polaribacter Sulfitobacter, predicted more involved S cycle. FAPROTAX PICRUSt2 analysis higher metabolic potential N cycles coves. pH a environmental factor influencing community variation habitats. As indicated network analysis, lake greater complexity stability, with robustness value smaller shifts natural connectivity. It could be concluded that similar factors ecosystems, significant diversity co-occurrence networks, influenced habitat differentiation. These further deepen our understanding typical glacier, providing new insights into impact downstream

Язык: Английский

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Structure and Diversity of Endophytic Bacteria in Maize Seeds and Germinating Roots

Microorganisms, Год журнала: 2024, Номер 12(7), С. 1348 - 1348

Опубликована: Июль 1, 2024

Seed endophytes in maize, which facilitate the transmission of microorganisms from one plant generation to next, may play a crucial role protection and growth promotion. This study aimed investigate effects various maize varieties on communities endophytic bacteria seeds germinating roots. utilized Illumina high-throughput sequencing technology examine structural diversity differences bacterial within seed (BY1507), silage (QQ446), wild (Teosinte) both The results showed that 416 genera were detected, with Pantoea, Lachnospiraceae, Pararhizobium, Enterobacteriaceae, Stenotrophomonas, Pseudonocardia being most prevalent (relative abundance > 10%) at genus level. No significant difference was observed indices (Chao1, ACE, Shannon, Simpson) among BY1507, QQ446, Teosinte. Shannon Simpson for root endophyte variety significantly higher than domesticated (BY1507 QQ446). PCoA revealed notable overlap Yet, clustering patterns found. Co-occurrence network analysis Teosinte share proportion shared (>30%) between investigation elucidates characteristics microbial roots offering data future research physiological ecological adaptation these communities.

Язык: Английский

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Grazing practices affect soil microbial networks but not diversity and composition in alpine meadows of northeastern Qinghai-Tibetan plateau

Environmental Research, Год журнала: 2023, Номер 235, С. 116656 - 116656

Опубликована: Июль 13, 2023

Язык: Английский

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