scholarly journals Depression of the soil arbuscular mycorrhizal fungal community by the canopy gaps in a Japanese cedar (Cryptomeria japonica) plantation on Lushan Mountain, subtropical China

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e10905
Author(s):  
Guiwu Zou ◽  
Yuanqiu Liu ◽  
Fanqian Kong ◽  
Liqin Liao ◽  
Guanghua Deng ◽  
...  

Both canopy gaps (CG) and arbuscular mycorrhizal fungi (AMF) play key roles in seedling establishment and increasing species diversity in forests. The response of AMF to canopy gaps is poorly understood. To assess the long-term effects of canopy gaps on soil AMF community, we sampled soil from plots in a 50-year Cryptomeria japonica (L.f.) D. Don. plantation, located in Lushan Mountain, subtropical China. We analyzed the AMF community, identified through 454 pyrosequencing, in soil and edaphic characteristics. Both richness and diversity of AMF in CG decreased significantly compared to the closed canopy (CC). The differences of the AMF community composition between CG and CC was also significant. The sharp response of the AMF community appears to be largely driven by vegetation transformation. Soil nutrient content also influenced some taxa, e.g., the low availability of phosphorus increased the abundance of Acaulospora. These results demonstrated that the formation of canopy gaps can depress AMF richness and alter the AMF community, which supported the plant investment hypothesis and accentuated the vital role of AMF–plant symbioses in forest management.

Author(s):  
Priyanka Kumari ◽  
R. R. Singh ◽  
Ruby Rani ◽  
Mahendra Singh ◽  
Uday Kumar

Litchi (Litchi chinensis Sonn.) originated from South China, it is sub-tropical evergreen fruit crops, especially grown on the marginal climate of tropics and subtropics. It is delicious juicy fruit of India having excellent nutritional quality, pleasant flavoured, good amount of antioxidant and vitamins C, vitamin B-complex and phytonutrients flavonoids. It has a great potential to earn foreign exchange in the national and international market through export. Arbuscular mycorrhizal (AM) infection is a common association between plant roots and microorganisms. It is responsible for increasing plant nutrient uptake and also increases in macro and micronutrients in leaf. Therefore, the present work has been analyzed macro and micro nutrients from soil and leaf, after 60, 90 and 120 days after inoculation of two bio-inoculants with phosphorus (SSP) including nine treatments with three replications. After 120 days of inoculation both the species of mycorrhizal combination with phosphorus application were very effective. Highest Copper content is (10.99 ppm), Zinc (33.17 ppm), Iron (121.47 ppm) and Manganese (15.33 ppm) was recorded in case T5 (G. mosseae 10 g + Phosphorus 50 mg kg-1 of soil) which is gradually increases. The soil nutrient content gradually decreased with time duration but no- significant difference was found among treatments after 120 days inoculation. After 120 days potting result was found that the Copper content is (1.70 ppm), Zinc (3.07 ppm), Iron (7.80 ppm) and Manganese (4.00 ppm) was recorded in case T5 (G. mosseae 10 g + Phosphorus 50 mg kg-1 of soil).this research was undertaken to find out whether Arbuscular mycorrhizal (AM) infection and phosphorus affect the micro-nutrient status of soil and leaves in nursery stage.


2021 ◽  
Vol 6 (1) ◽  
pp. 25
Author(s):  
Kuntum Febriyantiningrum ◽  
Dwi Oktafitria ◽  
Nia Nurfitria ◽  
Nurul Jadid ◽  
Dewi Hidayati

Mining activities can cause environmental damage, and needs land rehabilitation efforts. One approach to land rehabilitation after mine is with repairing the ecosystem condition by improving the quality of the soil, with increase fertility and enriching soil nutrient content by providing a biofertilizer from microbe, such as mycorrhizal fungi.  This study aims to determine the potential use of vesicular arbuscular mycorrhizal fungus (MVA) as a biofertilizer by examining the effect of MVA on the growth of corn plant (Zea Mays). Applicated indigenus MVA was able to increase the absorption of phosphorus (P) nutrients in the soil by corn plant so it had an effect on increasing the height and diameter of the corn plant stalks. MVA has the potential as a basic material for making biofertilizer, so it can be used to improve soil quality and environment in ex-limestone mining areas.  


1999 ◽  
Vol 34 (6) ◽  
pp. 1018-1024 ◽  
Author(s):  
Elizabeth Ying Chu

With the objective of verifying the response of Euterpe oleracea seedlings to seven arbuscular mycorrhizal fungi species, an experimental trial was carried out under greenhouse conditions. Seeds of E. oleracea were sown in carbonized rice husk. Germinating seeds were initially transferred to plastic cups, containing fumigated Reddish Yellow Quartz Sand and inoculated with arbuscular mycorrhizal fungi. Two months later, seedlings were transferred to 2 kg black plastic bags, containing the same soil without fumigation. Plant growth and mineral nutrients were evaluated nine months after mycorrhizal inoculation. Differential effects were observed among the species tested, with Scutellispora gilmorei being the most effective ones in promoting growth and nutrient content of E. oleracea seedlings. The increment resulted from inoculation with S. gilmorei were 92% in total plant height, 116% in stem diameter, 361% in dry matter production, 191% in N, 664% in P, 46% in K, 562% in Ca, 363% in Mg and 350% in Zn contents, comparing to uninoculated controls. Infected root length was positively correlated to nutrient content and plant growth. It was concluded that growth and nutrient uptake of E. oleracea seedlings could be significantly improved by inoculation of effective arbuscular mycorrhizal fungi.


FLORESTA ◽  
2017 ◽  
Vol 47 (4) ◽  
pp. 449 ◽  
Author(s):  
Rodrigo Camara ◽  
Ariovaldo Machado Fonseca Júnior ◽  
Ana Carolina Oliveira Sousa ◽  
Marcos Gervasio Gervasio Pereira ◽  
Joel Quintino Oliveira Júnior

A revegetação de áreas desmatadas de Mata Atlântica pode ser realizada com mudas de espécies florestais nativas inoculadas com fungos micorrízicos arbusculares (FMA). Este trabalho objetivou avaliar o efeito de diferentes substratos, na ausência/presença de inoculação com FMA, sobre o crescimento e conteúdo nutricional de mudas de Colubrina glandulosa Perkins. As mudas foram produzidas em tubetes em casa de vegetação. O delineamento experimental foi inteiramente casualizado, com 12 repetições/tratamento e oito tratamentos: T1 (20% esterco bovino + 80% terra), T2 (20% esterco bovino + 80% terra + FMA), T3 (20% esterco bovino + 60% terra + 20% areia), T4 (20% esterco bovino + 60% terra + 20% areia + FMA), T5 (20% esterco bovino + 60% terra + 20% vermiculita), T6 (20% esterco bovino + 60% terra + 20% vermiculita + FMA), T7 (20% esterco bovino + 60% terra + 10% areia + 10% vermiculita) e T8 (20% esterco bovino + 60% terra + 10% areia + 10% vermiculita + FMA). Aos 30, 65, 93 e 115 dias após a instalação do experimento, avaliou-se a altura (H) e diâmetro do coleto (DC). Aos 115 dias, avaliou-se a massa de matéria seca da parte aérea (MSPA) e raiz (MSR), razão MSPA/MSR, taxa de colonização micorrízica da raiz (%COLRAIZ), Índice de Qualidade de Dickson (IQD), conteúdo de nutrientes (N, P, K) na parte aérea e raiz, e eficiência de absorção de nutrientes (N, P, K). Concluiu-se que o T8 é o mais recomendado, pois proporcionou a produção de mudas com elevados valores para a maioria das variáveis de crescimento e nutrição analisadas. Palavras chave: fungos micorrízicos arbusculares, Mata Atlântica, recuperação de áreas degradadas. AbstractEffects of substrate and mycorrhizal inoculation on the production of seedlings of Colubrina glandulosa Perkins. Revegetation of deforested Atlantic Forest areas can be carried out with seedlings of native tree species inoculated with arbuscular mycorrhizal fungi (AMF). This study aimed to evaluate the effect of different substrates in the absence/presence of AMF inoculation on growth and nutritional content of Colubrina glandulosa Perkins seedlings. The seedlings were grown in plastic pots under greenhouse conditions. The experimental design was completely randomized with 12 repetitions/treatment and eight treatments: T1 (20% cattle manure + 80% soil horizon), T2 (20% cattle manure + 80% soil horizon + AMF), T3 (20% cattle manure + 80% soil horizon + 20% sand), T4 (20% cattle manure + 80% soil horizon + 20% sand + AMF), T5 (20% cattle manure + 60% soil horizon + 20% vermiculite), T6 (20% cattle manure + 60% soil horizon + 20% vermiculite + AMF), T7 (60% soil horizon A + 20% cattle manure + 10% sand + 10% vermiculite) e T8 (60% soil horizon A + 20% cattle manure + 10% sand + 10% vermiculite + AMF). At 30, 65, 93 and 115 days after the beginning of the experiment, we evaluated the height (H) and collar diameter (DC). At 115 days, we evaluated the dry matter of shoot (MSPA) and root (MSR), MSPA/MSR ratio, rate of roots colonization by mycorrhiza (% COLRAIZ), quality index of Dickson (IQD), nutrient content (N, P, K) in the shoot and root, besides uptake efficiency of nutrients (N, P, K). We recommend the treatment T8 because it provided the production of seedlings with high values of most of the growth and nutrition variables analyzed.            Key words: abuscular mycorrhizal fungi, Atlantic Forest, land reclamation.


2020 ◽  
Vol 66 (No. 4) ◽  
pp. 183-189 ◽  
Author(s):  
Lu-Lu Meng ◽  
Jia-Dong He ◽  
Ying-Ning Zou ◽  
Qiang-Sheng Wu ◽  
Kamil Kuča

Glomalin released from arbuscular mycorrhizal fungi (AMF) has important roles in soil nutrient cycles, whereas contributing to glomalin-related soil protein (GRSP) fractions to soil nitrogen (N) is unknown. In this study, a two-chambered root-box that was divided into root chamber (root and mycorrhizal fungi hypha) and hypha chamber (free of the root) was used, and three AMF species including Diversispora epigaea, Paraglomus occultum, and Rhizoglomus intraradices were separately inoculated into the root chamber. Plant growth, soil total N, N content of purified GRSP fractions, and its contribution to soil total N, and leaf and root N contents were analysed. After four months, total biomass and root total length, surface area, and volume were improved by all AMF inoculations. AMF inoculations dramatically increased soil total N content in two chambers. The N content of purified easily extractable GRSP (EE-GRSP) and difficultly extractable GRSP (DE-GRSP) was 0.10 ± 0.01 mg/g and 0.16 ± 0.02 mg/g, respectively, accounted for 15.6 ± 1.6% and 18.1 ± 1.8% of soil total N, respectively. AMF inoculations stimulated the N accumulation in EE-GRSP and DE-GRSP, especially in the hypha chamber. It concluded that GRSP, especially DE-GRSP, acts as a soil N pool accounting for 33.8 ± 1.9% of soil total N in orchards.


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