Effects of species mixing on maximum size-density relationships in Chinese fir ( (Lamb.) Hook.)-dominated mixed forests converted from even-aged pure stands.

Introduction: Density management is a key silvicultural tool in management programs that enhances compositional and structural diversity and hence forest growth during the conversion of even-aged pure stands into mixed forests.

Methods: To determine the optimum stand density, a model of maximum size-density relationships was employed to explore the relationship of the self-thinning trajectory with growth, species mixing, latitude, and site conditions during the transition of even-aged pure Chinese fir stands to Chinese fir-dominated mixed forests using stochastic frontier analysis. Data were obtained from a total of 591 permanent plots located in Fujian, Jiangxi, Zhejiang, and Anhui provinces in southern China.

Genome-Wide Identification, Characterization, and Expression Analysis of the Family Genes under Abiotic Stresses in .

The BRI1 EMS suppressor 1(BES1) transcription factor is a crucial regulator in the signaling pathway of Brassinosteroid (BR) and plays an important role in plant growth and response to abiotic stress. Although the identification and functional validation of genes have been extensively explored in various plant species, the understanding of their role in woody plants-particularly the endangered species (Hemsl.) Yang-remains limited.

Metagenomics reveals the effects of glyphosate on soil microbial communities and functional profiles of C and P cycling in the competitive vegetation control process of Chinese fir plantation.

Although considerable efforts have been devoted to investigate the behavior of glyphosate on microbiome in various environment, knowledge about the soil microbial community and functional profile in weeds control process of the Chinese fir plantation are limited. In this study, shotgun metagenomic sequencing was used to determine the abundance and diversity of microbial communities and functional genes after foliar application of glyphosate for 1, 2, 3 and 4 months in a Chinese fir plantation. The results showed that glyphosate increased the copy numbers (qPCR) of 16S rRNA gene for 16.

Novel insights on genes and pathways involved in Pinus elliottii response to resinosis.

Pinus elliottii, an important coniferous timber species, has recently become one of the most popular sources of resin in China. Resinosis is a common disease that may negatively affect pine tree growth and production. In this study, we used single-molecule real-time sequencing and Illumina RNA sequencing to generate an accurate transcriptome for P.

Comparative Analyses of Phyllosphere Bacterial Communities and Metabolomes in Newly Developed Needles of (Lamb.) Hook. at Four Stages of Stand Growth.

Host-plant-associated bacteria affect the growth, vigor, and nutrient availability of the host plant. However, phyllosphere bacteria have received less research attention and their functions remain elusive, especially in forest ecosystems. In this study, we collected newly developed needles from sapling (age 5 years), juvenile (15 years), mature (25 years), and overmature (35 years) stands of Chinese fir [ (Lamb.