Arbuscular mycorrhizal fungi communities and promoting the growth of alfalfa in saline ecosystems of northern China

Frontiers in Plant Science, Год журнала: 2024, Номер 15

Опубликована: Авг. 29, 2024

Arbuscular mycorrhizal fungi (AMF) are universally distributed in soils, including saline and can form symbiosis with the vast majority of higher plants. This reduce soil salinity influence plant growth development by improving nutrient uptake, increasing antioxidant enzyme activity, regulating hormone levels. In this study, rhizosphere from eight plants Songnen saline–alkaline grassland was used to isolate, characterize, screen indigenous advantageous AMF. The promoting effect AMF on alfalfa ( Medicago sativa L.) under salt treatment also investigated. findings showed that 40 species six genera were identified high-throughput sequencing. Glomus mosseae (G.m) etunicatum (G.e) dominant ecosystems northern China. Alfalfa inoculated different concentrations could be infested a symbiotic system. colonization rate dependence G.m inoculation significantly than those G.e inoculation. With concentration, increased height, fresh weight, chlorophyll content, proline (Pro), soluble sugar (SS), protein (SP), peroxidase (POD), superoxide dismutase (SOD), catalase (CAT) activity while decreasing malondialdehyde (MDA) content anion production rate. results highlight effectively alleviated stress, having significant resistance alfalfa. might play key role survival harsh conditions.

Язык: Английский

---

Reducing Application of Nitrogen Fertilizer Increases Soil Bacterial Diversity and Drives Co-Occurrence Networks

Microorganisms, Год журнала: 2024, Номер 12(7), С. 1434 - 1434

Опубликована: Июль 15, 2024

Reducing nitrogen fertilizer application highlights its role in optimizing soil bacterial communities to achieve sustainable agriculture. However, the specific mechanisms of community change under these conditions are not yet clear. In this study, we employed long-term field experiments and high-throughput sequencing analyze how varying levels influence structure co-occurrence networks. The results show that reducing inputs significantly enhances diversity evenness communities, possibly due diminished dominance nitrogen-sensitive taxa, which turn liberates ecological niches for less competitive species. Furthermore, changes complexity stability networks suggest increased resilience a shift toward more mutualistic interactions. These findings underline potential reduced alleviate pressures among species, thereby promoting diverse stable microbial ecosystem, highlighting release fostering diversity. This research contributes our understanding management can health offers insights into agricultural practices.

Язык: Английский

---

Nutrient enrichment weakens the positive feedback of soil organic carbon decomposition to short-term warming in subtropical forests

Plant and Soil, Год журнала: 2025, Номер unknown

Опубликована: Янв. 2, 2025

Язык: Английский

---

Trophic transfer efficiency of microbial food webs differs in water and sediment in alpine wetlands across the Tibetan Plateau

Environmental Research, Год журнала: 2025, Номер unknown, С. 121291 - 121291

Опубликована: Март 1, 2025

Язык: Английский

---

Temporal dynamics of soil microbial symbioses in the root zone of wolfberry: deciphering the effects of biotic and abiotic factors on bacterial and fungal ecological networks

Frontiers in Plant Science, Год журнала: 2025, Номер 16

Опубликована: Март 10, 2025

Long-term monoculture of Lycium barbarum significantly affects its productivity and soil health. Soil microbiota, which mediate the sustainable development ecosystems, are influenced by age wolfberry plants. However, comprehensive effects long-term cultivation L. on microbial community not yet fully understood. Here, we assessed stand diversity, composition, assembly, symbiotic networks bacterial fungal communities in root zone using high-throughput sequencing technology. The results showed that affected α-diversity communities, as evidenced tendency their Shannon Chao1 indices to increase then decrease. At same time, structure was tree age. Proteobacteria (28.77%–32.81%) always most dominant phylum, Ascomycetes (49.72%–55.82%) phylum. A number genus-level biomarkers were also identified soils associated with roots trees varying ages. Additionally, stochastic processes dominated assembly whereas balance between deterministic fluctuated complexity stability notably age, particularly from 10- 15-year-old trees. partial least squares path modeling (PLS-PM) analysis emphasized can indirectly regulate diversity network both influencing physicochemical properties. Furthermore, community, but exhibited direct strong regulation complexity. study offers valuable data for improving quality fruit yield under continuous cropping, has implications industry.

Язык: Английский

---

Impact of long-term loquat cultivation on rhizosphere soil characteristics and AMF community structure: implications for fertilizer management

Frontiers in Plant Science, Год журнала: 2025, Номер 16

Опубликована: Март 13, 2025

The role of arbuscular mycorrhizal fungi (AMF) in assisting the growth different fruit tree species is well-established, yet impact loquat cultivation under long-term human management on rhizosphere soil characteristics and AMF community structure remains unresolved. To address this knowledge gap, we collected roots samples from 20-year-old a germplasm resources nursery with consistent water nutrient conditions including one wild (YS), three pure (GXQH, MHH, DWX), four hybrid (ZJ90, JT, JTH, ZU7). Our analysis revealed that colonization rates ranged 40.57% to 65.54%, Glomus (30.72%) Paraglomus (29.46%) being dominant genera across all varieties. dominated species, while prevailed species. YS exhibited highest richness than cultivars. Significant variations nutrients enzyme activities among Total nitrogen (TN) total potassium (TK) were significantly negatively correlated relative abundance genera, suggesting may reduce abundance. Mantel test showed carbon (TC) organic matter (SOM) key factors influencing composition ( P <0.01). These positively genus (0.06, R 2 = 0.05) but rare such as Ambispora (−0.08, 0.24). Overall, these findings confirmed plant varieties or genotypes drive changes communities further demonstrated enrichment reduces diversity communities. results support use biofertilizers reducing fertilizer application.

Язык: Английский

---

Ecosystem multifunctionality enhancement by short-term nitrogen addition in semi-arid saline–alkaline grassland of northern China

The Science of The Total Environment, Год журнала: 2025, Номер 972, С. 179151 - 179151

Опубликована: Март 15, 2025

Язык: Английский

---

Long‐term ammonium nitrate addition strengthens soil microbial cross‐trophic interactions in a Tibetan alpine steppe

Ecology, Год журнала: 2025, Номер 106(3)

Опубликована: Март 1, 2025

Global nitrogen (N) enrichment is modifying microbial interactions, which can be represented by network complexity. While a number of studies have explored how N addition influences the intra-trophic network, its effects on inter-trophic rarely been investigated. Here, we examined 8 years multilevel additions (i.e., 0, 1, 2, 4, 8, 16, 24 and 32 g m-2 year-1) interactions soil communities protist-fungi, protist-prokaryote fungi-prokaryote) in Tibetan alpine steppe. Generally, there was first increasing then saturated trend complexity networks along N-addition gradient, contrasts with simplified or minimal response reported previously. The intensified cross-trophic were mainly explained increased plant litter biomass, indicates that N-induced increases carbon supplies may alleviated energy limitations thus resulted more active metabolic processes, consequently stimulating various biotic (e.g., predation, competition, commensalism). Further, enhanced relationships found to associated mineralization processes. Overall, these findings highlight importance indicate they should considered predictions ecosystem functioning under global enrichment.

Язык: Английский

---

Arbuscular mycorrhizal fungi hyphal density rather than diversity stimulates microbial necromass accumulation after long-term Robinia pseudoacacia plantations

Soil Biology and Biochemistry, Год журнала: 2025, Номер unknown, С. 109817 - 109817

Опубликована: Апрель 1, 2025

Язык: Английский

---

Arbuscular mycorrhizal fungi mediate soil N dynamics, mitigating N2O emissions and N-leaching while promoting crop N uptake in green manure systems

The Science of The Total Environment, Год журнала: 2024, Номер 957, С. 177592 - 177592

Опубликована: Ноя. 20, 2024

Язык: Английский

---