Effect of<i>Elymus nutan</i>s on the assemblage of arbuscular mycorrhizal fungal communities enhanced by soil available nitrogen in the restoration succession of revegetated grassland on the<scp>Qinghai‐Tibetan</scp>Plateau

Shi, Guoxi; Yang, Yue; Liu, Yongjun; Uwamungu, Jean Yves; Liu, Yanmei; Wang, Yibo; Feng, Huyuan; Yao, Buqing; Zhou, Huakun

doi:10.1002/ldr.4201

Cited by 9 publications

(5 citation statements)

References 72 publications

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“…However, studies have shown that nutrient addition caused decreases in AMF diversity and abundance [27,48,49]. Corresponding changes in soil factors have different degrees of impact on AMF community and diversity [49][50][51]. Differences in concentrations of nutritional factors may lead to the loss of some fungal species and promote the dominance of certain AMF species [52].…”

Section: Discussionmentioning

confidence: 99%

Arbuscular Mycorrhizal Fungi Associated with Roots Reveal High Diversity Levels at Different Elevations in Tropical Montane Rainforests

Zhang

Shi

et al. 2022

Diversity

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(1) Background: Understanding the diversity of communities of arbuscular mycorrhizal fungi (AMF) is the basis for understanding the ecological functions of AMF. (2) Methods: The community diversity and distribution of AMF at different elevations in tropical montane rainforests of Mt. Jianfenfling and Mt. Diaoluo were explored using high-throughput sequencing technology. (3) Results: A total of 283 AMF operational taxonomic units (OTUs) were identified from roots and the number of unique OTUs was 173, accounting for 61.13% of the total number discovered in these tropical montane rainforests. At different altitudes, high turnovers of AMF were observed, with the maximum proportion of unique OTUs between two altitudes being 45.16%, recorded between a.s.l. 250 m and 900 m on Mt. Diaoluo. The highest Sobs, Shannon and Pielou diversity indices appeared at 650 m on Mt. Diaoluo. For the two mountains, the soil properties of C, N and C/N have significant impacts on the genera Scutellospora, Paraglomus and unclassified in Archaeosporaceae, while the genera Glomus, Diversispora and Acaulospora are significantly affected by soil P and pH. It can be considered that altitude probably determines the presence of AMF communities by affecting edaphic properties. (4) Conclusions: There are abundant AMF associated with roots in the tropical montane rainforests of China. Furthermore, a high turnover of OTUs was found to exist between the mountains and at different altitudes, revealing diverse AMF community structures in tropical montane rainforests.

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Section: Discussionmentioning

confidence: 99%

Arbuscular Mycorrhizal Fungi Associated with Roots Reveal High Diversity Levels at Different Elevations in Tropical Montane Rainforests

Zhang

Shi

et al. 2022

Diversity

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“…The soil nutrient availability had been proven to be the key determinant that regulated the assembly of AMF communities (Johnson et al, 2015;Jiang et al, 2018) and vice versa (Rillig et al, 2015). The SN could directly drive the change in the AMF community in mixed roots (Shi et al, 2022). The change in SN indirectly regulated the species composition of the AMF community by driving plant species richness at both the wholecommunity scale and the individual plant species scale (Shi et al, 2022).…”

Section: The Relationship Between Amf and Soil Physicochemical Proper...mentioning

confidence: 99%

“…The SN could directly drive the change in the AMF community in mixed roots (Shi et al, 2022). The change in SN indirectly regulated the species composition of the AMF community by driving plant species richness at both the wholecommunity scale and the individual plant species scale (Shi et al, 2022).…”

Section: The Relationship Between Amf and Soil Physicochemical Proper...mentioning

confidence: 99%

Variations of arbuscular mycorrhizal fungi following succession stages in a tropical lowland rainforest ecosystem of South China

Yang

Mai²,

Liu³

et al. 2023

Front. Ecol. Evol.

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IntroductionThe grasslands in the Nature Reserve of Ganshenling, in the south of Hainan Island, were first formed after deforestation disturbance before a natural restoration of shrubs and secondary forests. However, the stages of grassland and shrubs in some parts of Ganshenling regions could not be naturally restored to secondary forests. In addition, the forest form of the secondary forest after 40 years (40a) of succession was similar to that of the secondary forest of 60 years (60a). However, it was not known whether the microorganisms recovered to the level of the secondary forest of 60a. Arbuscular mycorrhizal fungi (AMF) are plant root symbionts that can improve the nitrogen and phosphorus absorption of plants and play a key role in secondary forest succession. An understanding of the essential role of soil AMF in secondary forest succession of tropical rainforest in Ganshenling regions is still limited.MethodsTherefore, the soil of 0–10 cm was collected with the help of a 5-point sampling method in grassland, shrubs, and second tropical lowland rainforest of 40a and 60a. We studied community changes in AMF with the succession and explored the impacts of soil physicochemical properties on soil AMF.ResultsOur findings were as follows: (1) Different successional stages showed divergent effects on soil AMF communities. (2) After 40a recovery, the alpha-diversity indices of AMF recovered to the level of secondary forest of 60a, but the similarity of soil AMF communities only recovered to 25.3%. (3) Species richness of common species, rare species, and all the species of AMF showed a significantly positive correlation with soil nitrogen. (4) OTU10; OTU6, OTU9, and OTU141; OTU3 and OTU38; and OTU2, OTU15, OTU23, and OTU197 were significantly unique AMF for grasslands, shrubs, and secondary forests of 40a and 60a, respectively. (5) The phylogenetic tree and the heatmap of AMF showed that the OTUs in grasslands and shrubs were in contrast to the OTUs in secondary forests of 40a and 60a.DiscussionWe concluded that the succession of a secondary forest after deforestation disturbance was probably limited by its AMF community.

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“…Restoring the soil carbon and nitrogen storage in the alpine grassland through vegetation reconstruction on the "black soil beach" takes more than nine years, and the C and N storage changes in a "V" shape with the vegetation restoration time [100]. Scientific management of soil nitrogen availability during restoration and succession can delay the occurrence of secondary degradation of vegetation and grassland [164]. During grassland reconstruction, proper planning is needed to enhance soil carbon and nitrogen storage potential, which is essential to maintain the healthy development of the ecosystem.…”

Section: Restoration Of "Black Soil Beach"mentioning

confidence: 99%

Dynamic Response and Adaptation of Grassland Ecosystems in the Three-River Headwaters Region under Changing Environment: A Review

Kou

Yuan

Dong

et al. 2023

IJERPH

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The Three-River Headwaters Region (TRHR) is crucial to the sustainable development of China and Southeast Asia. The sustainability of grassland ecosystems in the region has been seriously challenged in recent years. This paper reviewed the changes in the grasslands of the TRHR and their responses to climate change and human activities. The review showed that accurate monitoring of grassland ecological information is the basis for effective management. Although alpine grassland coverage and the above-ground biomass of the alpine grassland have generally increased in the region over the past 30 years, the degradation has not been fundamentally curbed. Grassland degradation substantially reduced topsoil nutrients and affected their distribution, deteriorated soil moisture conditions, and aggravated soil erosion. Grassland degradation led to loss of productivity and species diversity, and this is already harming the well-being of pastoralists. The “warm and wet” trend of the climate promoted the restoration of alpine grasslands, but widespread overgrazing is considered as one of the main reasons for grassland degradation, and related differences still exist. Since 2000, the grassland restoration policy has achieved fruitful results, but the formulation of the policy still needs to integrate market logic effectively and strengthen the understanding of the relationship between ecological protection and cultural protection. In addition, appropriate human intervention mechanisms are urgently needed due to the uncertainty of future climate change. For mildly and moderately degraded grassland, traditional methods are applicable. However, the severely degraded “black soil beach” needs to be restored by artificial seeding, and the stability of the plant–soil system needs to be emphasized to establish a relatively stable community to prevent secondary degradation.

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Effect ofElymus nutans on the assemblage of arbuscular mycorrhizal fungal communities enhanced by soil available nitrogen in the restoration succession of revegetated grassland on theQinghai‐TibetanPlateau

Cited by 9 publications

References 72 publications

Arbuscular Mycorrhizal Fungi Associated with Roots Reveal High Diversity Levels at Different Elevations in Tropical Montane Rainforests

Arbuscular Mycorrhizal Fungi Associated with Roots Reveal High Diversity Levels at Different Elevations in Tropical Montane Rainforests

Variations of arbuscular mycorrhizal fungi following succession stages in a tropical lowland rainforest ecosystem of South China

Dynamic Response and Adaptation of Grassland Ecosystems in the Three-River Headwaters Region under Changing Environment: A Review

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