Species of Phaeophleospora are anamorphs of Mycosphaerella and they include some of the most serious foliar pathogens of Eucalyptus spp. grown in plantations worldwide. Pathogens assigned to this genus and occurring on Eucalyptus spp. were previously treated in Kirramyces and they are also phylogenetically closely related to other anamorphs of Mycosphaerella residing in the genus Colletogloeopsis. The primary aim of this study was to consider the appropriate taxonomic placement of these species. To achieve this goal, morphological characteristics and DNA sequence data from the ITS and translation EF1-alpha gene regions were used to compare the type species P. eugeniae, Phaeophleospora spp. and Colletogloeopsis spp. occurring on eucalypts, using ex-type cultures and herbarium specimens. Phylogenetic data and morphological comparisons supported the separation of P. eugeniae from Phaeophleospora species occurring on eucalypts. The name Phaeophleospora is retained for P. eugeniae and the name Kirramyces is resurrected for the species occurring on eucalypts (genera Eucalyptus, Corymbia, and Angophora). Sequence data from the type specimens of two previously described species of Kirramyces, K. lilianiae and K. delegatensis, show they reside in a clade with other Kirramyces spp. Morphological and DNA sequence comparisons also showed that there is considerable overlap between species of Phaeophleospora and Colletogloeopsis from eucalypts. Based on these findings, Colletogloeopsis is reduced to synonymy with the older Kirramyces and the description of Kirramyces is emended to include species with aseptate, as well as multiseptate, conidia produced in acervuli or pycnidia. Two new species of Kirramyces, K. angophorae and K. corymbiae, are also described.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.mycres.2007.07.003 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Novel associations among insect herbivores and trees: Patterns of occurrence and damage on pines and eucalypts.
Ecol Appl
March 2025
Grupo de Ecología de Poblaciones de Insectos, Instituto de Investigaciones Forestales y Agropecuarias Bariloche, INTA - CONICET, Bariloche, Rio Negro, Argentina.
Globalization has led to a significant increase in the establishment of forest plantations with exotic species and to the accidental introduction of forest insects worldwide. Cumulatively, these factors contribute to the increased occurrence of novel associations between phytophagous insects and trees, leading to new interactions between species that have not historically co-occurred. Here, we reviewed the patterns of novel associations between herbivorous insects and pines and eucalypts at a global scale and identified factors that could favor the occurrence of novel associations and their impacts on forestry.
View Article and Find Full Text PDFGenetic relationship analysis and core collection construction of Eucalyptus grandis from Dongmen improved variety base: the largest eucalypt germplasm resource in China.
BMC Plant Biol
December 2024
State Key Laboratory of Tree Genetics and Breeding, National Engineering Research Center of Tree Breeding and Ecological Restoration, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China.
Background: Eucalyptus grandis, which was first comprehensively and systematically introduced to China in the 1980s, is one of the most important fast-growing tree species in the forestry industry. However, to date, no core collection has been selected from the germplasm resources of E. grandis based on growth and genetic relationship analysis.
View Article and Find Full Text PDFDivergent trajectories of regeneration in early-successional forests after logging and wildfire.
Ecol Appl
January 2025
Fenner School of Environment & Society, ANU College of Science, The Australian National University, Canberra, Australian Capital Territory, Australia.
Article Synopsis
- * The study investigates how three disturbance types—clearcut logging with slash burning, severe wildfire with salvage logging, and severe wildfire alone—impact early-successional forests in southeastern Australia over 14 years.
- * Results show that wildfire-affected forests recover more robustly in plant diversity and structure compared to those impacted by clearcut and salvage logging, the latter negatively impacting plant richness for over a decade.
Exploring the Genetic Basis of spp. Resistance in Eucalypts.
Curr Issues Mol Biol
September 2024
Institute of Fast-Growing Trees, Chinese Academy of Forestry, Zhanjiang 524022, China.
Article Synopsis
- Selecting high-quality, disease-resistant eucalypt varieties through artificial crossbreeding is key to tackling issues caused by pathogens in plantations.
- A study compared two eucalypt hybrids, one susceptible (EC333) and one resistant (EC338), by analyzing their gene expression after infection with a pathogen that induces leaf blight.
- Results showed a significant difference in gene expression, with 3912 genes identified as differentially expressed, indicating potential genetic factors linked to disease resistance; furthermore, specific gene pathways related to carbohydrate binding and secondary metabolism were highlighted.
- The analysis also revealed extensive differences in mutation loci between the hybrids, suggesting that genetic variations contribute to the observed resistance in EC338 compared to EC333.
Aerodynamic effects cause higher forest evapotranspiration and water yield reductions after wildfires in tall forests.
Glob Chang Biol
January 2024
Department of Civil and Environmental Engineering, National University of Singapore, Singapore, Singapore.
Wildfires are increasing in frequency, intensity, and extent globally due to climate change and they can alter forest composition, structure, and function. The destruction and subsequent regrowth of young vegetation can modify the ecosystem evapotranspiration and downstream water availability. However, the response of forest recovery on hydrology is not well known with even the sign of evapotranspiration and water yield changes following forest fires being uncertain across the globe.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!