Distribution patterns of (Ascomycota, Sordariomycetes, Hypocreales, Nectriaceae) species complexes related to diseased leaves and soil habitats during leaf blight outbreak season in plantations in southern China.

Calonectria leaf blight caused by species is one of the most important diseases associated with plantations in Asia and South America. This study aimed to clarify the distribution patterns of species residing in different species complexes associated with diseased trees and soils during leaf blight outbreak season in plantations in southern China. In this study, 482 isolates obtained from diseased trees and soils under these trees in eight sampling sites in three provinces were identified by DNA sequence analyses of , , , and gene regions.

Regeneration and Genetic Transformation in Species, Current Research and Future Perspectives.

is an important plantation tree with a high economic value in China. The tree contributes significantly to China's timber production. The stable and efficient regeneration system and genetic transformation system are of great significance for exploring the regulatory function and possible genetic breeding capacity of important genes in the species.

Organic fertilizer improved the lead and cadmium metal tolerance of by enhancing the uptake of potassium, phosphorus, and calcium.

Phytoremediation is a strategy for the amelioration of soil heavy metal contamination that aligns with ecological sustainability principles. Among the spectrum of phytoremediation candidates, woody plants are considered particularly adept for their substantial biomass, profound root systems, and non-participation in the food chain. This study used -a tree species characterized for its high biomass and rapid growth rate-to assess its growth and metal uptake in mining tailings.

High genetic diversity and limited regional population differentiation in populations of from plantations.

causes a serious and widespread disease known as Calonectria leaf blight in plantations of southern China. Little is known regarding the population biology or reproductive biology of this pathogen in the affected areas. The aims of this study were to investigate the genetic diversity, population structure and the reproductive mode of from affected plantations of southern China.

Key traits influencing the resistance of to wind damage in coastal areas of South China.

Aims: China is one of the countries in the world most seriously affected by typhoons, which pose a great threat to the eucalyptus plantation industry. However, few studies have comprehensively accounted for the impact of key traits on the wind damage/resistance of eucalyptus.

Methods: To identify the key factors affecting the wind resistance of eucalyptus, 20 eucalyptus genotypes were selected; a total of 18 traits, including the wind damage index, growth traits, and wood traits, were measured, and the wind resistance was determined via the tree-pulling test.

Diversity of Calonectria species from leaves and soils in diseased southern China Eucalyptus plantation.

Calonectria leaf blight (CLB) is one of the best-known diseases of Eucalyptus spp., particularly in Asia and South America. Recently, typical symptoms of leaf and shoot blight caused by Calonectria spp.

species from plantation soils in southwestern China.

Species of are saprobic or plant pathogenic, and widely distributed in soil in tropical and sub-tropical regions of the world. Limited information is available about the species diversity and distribution of in China. The aim of this study was to identify the isolates from soils collected in a plantation in the Yunnan Province of southwestern China.

Amendments affect the community assembly and co-occurrence network of microorganisms in Cd and Pb tailings of the Eucalyptus camaldulensis rhizosphere.

Mining tailings containing large amounts of Pb and Cd cause severe regional ecosystem pollution. Soil microorganisms play a regulatory role in the restoration of degraded ecosystems. The remediation of heavy metal-contaminated tailings with amendments and economically valuable Eucalyptus camaldulensis is a research hotspot due to its cost-effectiveness and sustainability.

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.

Wide Distribution of and Associated with Diseased Leaves in Plantations in Southern China.

Species of and represent over 40% of the fungi identified on eucalypt leaves worldwide. These include some important pathogens that mainly cause leaf blight and spot, and result in increasingly negative impacts on global commercial eucalypt industries. plantations are commonly cultivated in southern China for solid wood and pulp products.

Genome-wide identification and expression analysis of GDP-D-mannose pyrophosphorylase and KATANIN in .

The GDP-D-mannose pyrophosphorylase () and microtubule severing enzyme KATANIN () are crucial for wood formation. Although functional identification has been performed in , few comprehensive studies have been conducted in forest trees. In this study, we discovered 8 and 4 genes by analyzing the whole genome sequence of .

High-quality genome resource of Lasiodiplodia pseudotheobromae associated with die-back on Eucalyptus trees.

Objectives: Lasiodiplodia pseudotheobromae is an important fungal pathogen associated with die-back, canker and shoot blight in many plant hosts with a wide geographic distribution. The aim of our study was to provide high-quality genome assemblies and sequence annotation resources of L. pseudotheobromae, to facilitate future studies on the systematics, population genetics and genomics of the fungal pathogen L.

Population structure and genetic diversity in based on SNP markers.

has the characteristics of rapid growth and high resistance. However, there is little research on molecular breeding of , which is essential to shortening breeding life and selecting quality varieties. Therefore, a crucial step before selective breeding can be carried out to increase the wood quality of is identifying genetic diversity and population structure using single nucleotide polymorphism (SNP) markers.

Evidence of High Genetic Diversity and Differences in the Population Diversity of the Eucalyptus Leaf Blight Pathogen from Diseased Leaves and Soil in a Plantation in Guangxi, China.

is an important causal agent of leaf blight in southern China. This pathogen causes tree disease across numerous regions in southern China. In addition to diseased leaves, has occasionally been isolated from soil in plantations.

Comparative Metabolomic and Transcriptomic Analyses Reveal Distinct Ascorbic Acid (AsA) Accumulation Patterns between PCA and PCNA Persimmon Developing Fruit.

Persimmon fruit has a high nutritional value and significantly varies between pollination-constant astringent (PCA) and pollination-constant non-astringent (PCNA) persimmons. The astringency type affects sugar, flavonoids, and tannin accumulation and is well known in persimmon fruit. However, the impact of the fruit astringency type on ascorbic acid (AsA) accumulation is limited.

Genes expression profiles in vascular cambium of Eucalyptus urophylla × Eucalyptus grandis at different ages.

Background: Wood is a secondary xylem generated by vascular cambium. Vascular cambium activities mainly include cambium proliferation and vascular tissue formation through secondary growth, thereby producing new secondary phloem inward and secondary xylem outward and leading to continuous tree thickening and wood formation. Wood formation is a complex biological process, which is strictly regulated by multiple genes.

Wide Distribution and Intraspecies Diversity in the Pathogenicity of in Soil from Plantations in Southern Guangxi of China.

spp. are extensively cultivated in southern China because of their adaptability and versatile timber production. leaf blight caused by species is considered a major threat to trees planted in China.

Comparative analysis of flavonoids, polyphenols and volatiles in roots, stems and leaves of five mangroves.

Mangrove plants contain a variety of secondary metabolites, including flavonoids, polyphenols, and volatiles, which are important for their survival and adaptation to the coastal environment, as well as for producing bioactive compounds. To reveal differences in these compounds among five mangrove species' leaf, root, and stem, the total contents of flavonoids and polyphenols, types and contents of volatiles were determined, analyzed and compared. The results showed that leaves contained the highest levels of flavonoids and phenolics.

Identification and pathogenicity of species (Cryphonectriaceae, Diaporthales) on species in Southern China.

The family of Cryphonectriaceae (Diaporthales) contains many important tree pathogens and the hosts are wide-ranging. Tree species of were widely planted as ornamental trees alongside city roads and villages in southern China. Recently, stem canker and cracked bark were observed on 2-6 year old and in several nurseries in Zhanjiang City, Guangdong Province, China.

Characterization of Species from Diseased Plantation-Grown , spp., and in Southern China.

Fungi from () have been reported as pathogens, endophytes, or saprophytes from various woody plants in different countries. Recently, isolates were obtained from the dead twigs of , spp., , and in Guangdong, Guangxi, Hainan, and Fujian Provinces in southern China.

Transcriptome and Metabolome Profiling Provide Insights into Flavonoid Synthesis in Linn.

is an important medicinal plant in mangrove forests, which is rich in secondary metabolites with various biological activities. In this study, we used transcriptomic analysis to obtain differentially expressed genes in the flavonoid metabolic pathway and metabolomic methods to detect changes in the types and content in the flavonoid metabolic synthesis pathway. The results showed that DEGs were identified in the mature roots vs.

Mixing planting with native tree species reshapes soil fungal community diversity and structure in multi-generational eucalypt plantations in southern China.

The continuous planting pattern of eucalypt plantations negatively affects soil quality. A mixed planting pattern using native species implanted in pure plantations has been considered a preferable measure for this problem. However, the impact of this approachon the structure and function of fungal communities is not clear.