Genetic diversity and population structure of Castanopsis eyrei based on simple sequence repeat markers

Mao, Lihui; Zhou, Xiaoli; Fang, Yanming

doi:10.4238/gmr.15028256

Cited by 4 publications

(2 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Tutch. (Fagaceae) is an evergreen, monoecious and anemophilous dominant tree species 32,33 that grows up to 35 m and has a maximum recorded DBH of 95 cm in the FDP. C. eyrei usually begins to produce seeds at DBH > 14 cm (pers.…”

Section: Methodsmentioning

confidence: 99%

Differential impacts of adult trees on offspring and non-offspring recruits in a subtropical forest

Wang

Chen

et al. 2022

Sci. China Life Sci.

View full text Add to dashboard Cite

Number of tables, figures and text boxes: 43 An important mechanism promoting species coexistence is conspecific negative density dependence (CNDD), which inhibit conspecific neighbours by accumulating hostspecific enemies near adult trees. Natural enemies may be genotype-specific and regulate offspring dynamics more strongly than non-offspring, which is often neglected due to the difficulty in ascertaining genetic relatedness. Here, we investigated whether offspring and non-offspring of a dominant tree species suffered from different strength of CNDD based on parentage assignment in a subtropical forest. We found decreased recruitment efficiency (proxy of survival probability) of offspring compared with nonoffspring near adult trees during the seedling-sapling transition, suggesting genotypedependent interactions drive tree demographic dynamics. Furthermore, the genetic similarity between individuals of same cohort decreased in late life history stages, indicating genetic-relatedness-dependent tree mortality throughout ontogeny. Our results demonstrate that within-species genetic relatedness significantly affects the strength of CNDD, implying genotype-specific natural enemies may contribute to population dynamics in natural forests.

show abstract

Section: Methodsmentioning

confidence: 99%

Differential impacts of adult trees on offspring and non-offspring recruits in a subtropical forest

Wang

Chen

et al. 2022

Sci. China Life Sci.

View full text Add to dashboard Cite

show abstract

“…Castanopsis eyrei is the main species of subtropical evergreen broad-leaved forest, with a large ecological range. It is the dominant species in this area 39,40 , and has large fallen wood reserves. The study of this species is representative, which is conducive to improve the role of dead wood in the forest ecosystem in the middle subtropical region, and provide scienti c basis and guidance for the forest carbon cycle.…”

Section: Introductionmentioning

confidence: 99%

Significant Effects of Dead Trees on Active Organic Carbon Components and Microbial Communities in Subtropical Forests

Jiang

Dang

Yan

et al. 2022

Preprint

View full text Add to dashboard Cite

As a vital component of the forest ecosystem, dead wood plays an important role in forest regeneration, species variety, water conservation, soil erosion avoidance, and the carbon cycle. At the moment, dead wood research is mostly concerned with the storage of dead wood in forests and the change of nutritional components throughout the decomposition process. There have been few investigations on the changes in soil active organic carbon components and bacterial community structure during the breakdown of dead wood. To investigate the impact of dead wood on soil active organic carbon components and the structure of microbial communities. we selected the soil under three different decay grades of Castanopsis eyrei dead wood and the forest soil without dead wood as the control. The basic physical and chemical indexes of soil, the composition of soil active organic carbon and the structure of microbial community were measured. Compared with the control group, dead wood mulching significantly increased the content of soil organic carbon and total nitrogen (P < 0.05), and dead wood significantly affected the content of soil active organic carbon (P < 0.05). The easily oxidized organic carbon, microbial biomass carbon and organic carbon under the severe decay dead wood were significantly higher than those in the control (P < 0.05), and the content of activated carbon increased with the increase of decay grade. The relative abundance of Actinobacteria, Chloroflexi, WPS-2, Patescibacteria and Bacteroidetes increased with the increase of decay grade of dead wood, and the relative abundance of soil bacteria under dead wood was higher than that of the control. Through the redundancy analysis of environmental factors and soil microbial community, we found soil total nitrogen and pH are the key factors driving microbial community. The distribution of soil bacterial community under light rotten dead wood is similar to that soil without dead wood, which is significantly different from that under moderate and severe rotten dead wood. The abundance of soil bacterial community and soil active organic carbon components are most affected by heavy rotten dead wood. Soil active organic carbon was significantly negatively correlated with Acidobacteria(P < 0.01), and positively correlated with Ktedonobacteria, Bacteroidia, Saccharimonadia and TK10(P < 0.05). The above research results show that dead wood has a great impact on soil physical and chemical properties and microbial community structure. Our study improves the impact of dead wood on soil activated carbon components and microbial community, and provides a theoretical basis for sustainable forest management.

show abstract

Positive relationships between species diversity and genetic diversity on a local scale at Mt. Wu Yi, China

et al. 2023

View full text Add to dashboard Cite

Genetic diversity and population structure of Castanopsis eyrei based on simple sequence repeat markers

Cited by 4 publications

References 28 publications

Differential impacts of adult trees on offspring and non-offspring recruits in a subtropical forest

Differential impacts of adult trees on offspring and non-offspring recruits in a subtropical forest

Significant Effects of Dead Trees on Active Organic Carbon Components and Microbial Communities in Subtropical Forests

Positive relationships between species diversity and genetic diversity on a local scale at Mt. Wu Yi, China

Contact Info

Product

Resources

About