Fungi community structure associated with Korean pine forests and the varying tendency with four forest land age

Abstract

We used a space-for-time substitution as an alternative to investigate the variation in rootfungal communities from four Korean pine forest lands with different ages. An analysis of the communityin the root revealed that the fungal community composition differed, and it was affected bya combination of host age, climate factors and soil factors which including the soil fungi and soilphysical and chemical properties. We assembled 464,490 seq uences into 2,066 fungal operationaltaxonomic units (OTUs), of these, 1,955 OTUs were classified as 5 phyla, 20 classes, 69 orders, 131families, 330 genera. More than 75% root fungi overlap with the fungi of the habit soil. The fungalcommunities both from the root and soil bulk showed the highest species diversity in the >150 yearsold forest compared with 50–100 years old forests and five years old seedlings. With advancingforest age, in the root there were not only the unique dominant genera, but showed uniqueness bothin the totally fungal community and functional fungi community succession took place in thesesample plots. In 5 years old land, the relative abundance of pathotrophic fungi and symbiotrophicfungi were higher than saprotrophic fungi, in the mature forests, pathotrophic fungi and symbiotrophicfungi showed stabilized and a little lower than saprotrophic fungi in richness. These changesin the fungal community, respectively, were influenced significantly by pH, rainfall, and themean air temperature (P < 0.05). This study findings focused on the dynamics of changes within thetaxonomy of the root fungal community as a response to the age of the host tree (Korean pine), maybe used for forest management and as the reference for evaluation the stability of forest ecosystem.

Fungal–Bacterial Networks in the Habitat of SongRong (Tricholoma matsutake) and Driving Factors of Their Distribution Rules

“…We know that various abiotic and biotic factors are important factors that influence fungi or other microbial structures and their distribution in forest ecosystems [ 9 , 10 , 11 , 12 , 13 , 14 , 15 ]. The distribution of T. matsutake ’s fruiting bodies was closely related to their symbiotic partners, and Pinaceae are believed to be the main host of T. matsutake .…”

“…For example, analyses of the linear regression equation showed that the relative abundance of Russula was correlated with Lachnum (most species of which are saprophytic fungi) and Ilyonectria (some species of which can cause root rot disease) in a pure Q. mongolica forest [ 11 ]. In addition, the relative abundance of Suillus was shown to have certain relations with Umbelopsis in a Korean pine forest [ 12 ]. Some studies reported on the composition of soil microorganisms in the T. matsutake habitat [ 38 , 39 , 40 ], but there are conflicting accounts of the specific microbial groups in the different habitats of T. matsutake .…”

Response of bacterial community structure to different ecological niches and their functions in Korean pine forests

“…However, to ensure that the root tip samples (which were mixed with other plants to varying degrees) originated from Korean pine in the natural forests, we collected root tip samples by digging along the root system exposed on the ground to the root tips. Typically, part of the Korean pine roots stick out of the ground ( Gao et al, 2020 ). The rhizospheric soil samples were simultaneously collected at a depth of about 20 cm near the Korean pine roots.…”

Community structure of fungal pathogens causing spikelet rot disease of naked oat from different ecological regions of China

“…The species abundance and composition of the microbiota are important factors in determining the quality of the grain 15 . Throughout the growing season, weather conditions such as temperature and humidity influence the distribution of the infecting fungal species and lead to geographical variation in the species distribution [28][29][30][31] . As the main cultivar of naked oat in China, Bayou 13 is planted in different ecological regions, including Tibet, Shanxi Province, Gansu Province, Inner Mongolia, Qinghai Province and Hebei Province.…”