The gypsy moth, Lymantria dispar (L.) (Lepidoptera: Lymantriidae), causes enormous damage to broadleaved forests in the northern hemisphere where it frequently defoliates large areas of forest.Since outbreaks begin oak forests, its most suitable habitat, we determined preference and performance moth larvae when reared on three species native oaks: sessile oak, Quercus petraea (Matt.)Liebl.; Turkey Q. cerris L.; Hungarian frainetto (Ten.).Leaf expansion selected physical chemical...

During a survey in three declining and healthy poplar plantations Serbia, six different Phytophthora species were obtained. plurivora was the most common, followed by P. pini, polonica, lacustris, cactorum, gonapodyides. Pathogenicity of all isolated to four-month one-year-old cuttings Populus hybrid clones I-214 Pánnonia, respectively, tested using both soil infestation stem inoculation test. Isolates × cambivora, cryptogea, serendipita from other host plants included as comparison. In...

Summary Armillaria causes problems of root rot, kill trees and decay wood in the forests Serbia Montenegro, but species involved have not hitherto been identified. The aim this study was to identify field isolates collected on 25 localities. Identification based restriction fragment length polymorphism (RFLP) analysis intergenic spacer 1 (IGS1) region comparisons IGS1 sequence with those available NCBI database. Phylogenetic performed information from selected determine possible...

1. Globally, vast areas of forest are currently threatened by Lymantria dispar L. and Phytophthora species, which cause widespread declines cascading ecological impacts. One important aim evolutionary studies is to understand their interactions. 2. The present study tests whether Quercus rubra trees naturally infected with P. plurivora T. Jung & T.I. Burgess or free infection more suitable for herbivory, if relationships between performance herbivory may vary depending on infection. 3....

When monitoring the state of health Fraxinus excelsior trees, unusual symptoms were discovered within a F. plantation in Bosnia and Herzegovina. These included appearance necrosis cankers basal parts followed by formation fruiting bodies, however, none these found crowns. After sampling isolation necrotic from stem base, pathogen Neonectria punicea was isolated identified characteristics pure cultures, morphology multilocus sequencing. In field conditions, juvenile trees inoculated with two...

Abstract The paper gives the results of research into Sarrhia pini infection process in Pinus nigra plantations Serbia (Yugoslavia). S. is one most dangerous fungi Serbia. Its condia are dispersed from beginning April till end October, and ascospores second halt June September. critical period for infections May July when protection necessary.

In Austrian pine plantations in Serbia, the greatest damage is caused by fungi Mycosphaerella pini, Sphaeropsis sapinea, Cenangium ferruginosum, Germmeniella abietina (in mountain regions) and occasionally Armillaria spp., Lophodermium spp. (seditiosum, conigenum, pinastri) Cyclaneusma niveum. Scots plantations, Heterobasidion annosum (especially on sandy soils), spp, seditiosum, L. pinastri, minus sapinea. Damage rust (Coleosporium sennecionis, Melampsora pinitorqua Cronartium flaccidum)...

Summary The distribution of Armillaria species was investigated in Serbian forest ecosystems, relation to the main host attacked, forest‐types, geography and altitude. In total, 388 isolates were identified from 36 47 sites. gallica most commonly observed with widest an altitudinal range 70–1450 m, it dominating lowland alluvial forests Quercus Fagus at higher elevations. mellea occurred spp. – dominated north central regions 70–1050 m. Sixty‐eight per cent A. collected living hosts,...

Summary During the monitoring of mycological complex on different forest tree species in Biogradska Gora National Park north‐east Montenegro, symptoms indicative ash dieback caused by Hymenoscyphus fraxineus were observed young Fraxinus excelsior trees protected virgin forest, including plants and branches, wilting leaves shoots leading to a “flag‐like” habitus, premature shedding longitudinal bark necroses. Using standard isolation methods, slow‐growing cultures with numerous phialides,...

Gypsy moths and powdery mildew play a significant role in oak decline processes. However, information is lacking on the effects gypsy moth of impaired tree vitality caused by defoliation or parasite infection. We assessed how pedunculate leaves collected from vigorous, declining, infected trees influenced preference performance (growth nutritional indices). found negative effect mildew-infected performance, while declining had positive preference. All examined parameters larvae fed were...

According to many surveys of pathogenic organisms in forest soils, the presence Phytophthora genus is very common both dominant and mixed stands European beech. In Serbia, species were isolated from rhizosphere soil declining, as well apparently healthy stands. After detailed morphological molecular identification, several confirmed. The most pathogen fine roots Serbian beech was plurivora Jung Burgess. This characterized homothallic, semipapillate, produces sporangia various shapes, has an...

Summary During the monitoring of health status nurseries and plantations in Serbia, a decline 5‐year‐old Paulownia tomentosa plantation was recorded. Trees displayed symptoms dieback, massive breaking at different positions, appearance decay fungal fruitbodies stems. Using standard isolation methods, white colonies with cottony surfaces regular growth were obtained from decaying wood samples, after oxidation degree analysis, it determined that these isolates belonged to Davidson's group 6,...

The presence of Cryphonectria parasitica (Murrill) M.E. Barr was studied in six natural and planted stands sweet chestnut Serbia. fungus detected on the five localities sessile oak one locality. In total, 77 isolates from were obtained. Based culture morphology, all obtained proven to be free (Saccardo) Saccardo & D. hypovirus. C. compatible with three different vegetative compatibility types, EU-12, EU-2, EU-1, while belonged EU-12. After inoculation laboratory conditions, isolate caused...

The most frequent fungus species known as powdery mildews, causing the diseases of forest trees, were studied. Among woody species, oaks are especially susceptible to mildew attack, and among them pedunculate oak (Quercus robur L) is highly endangered. This paper reports 49 mildews. However, Microsphaera alphitoides has greatest significance in economy, decline seedlings nurseries also aggravating natural regeneration oak. fungus, together with gypsy moth honey (Armillaria mellea)...

M. pini is one the most widespread and dangerous pathogenic fungi in plantations of Pinus species world. This fungus has been observed on more than fifty species, European Larch, Douglas Fir, Norway Spruce, Serbian Spruce Sitka Spruce. In Serbia, caused greatest damage Austrian pine (P. nigra Arn). Serbia both states have observed, i.e. conidiomata ascostromata. Conidia are far significant infection process. The critical period for infections May - June. Of all tested fungicides, best...

The paper presents the results of study performed with aims to determine presence and diversity Phytophthora species on maple trees in Serbia. Due high aggressiveness their multicyclic nature, these pathogens is posing significant threat forestry biodiversity. In total, 29 samples water, soil tissues were taken from 10 different localities, six hosts tested. After isolation tests, 17 five positive for spp., 31 isolates obtained. detailed morphological physiological classification, four...

Common mistletoe (Viscum album L) is a semiparasitic angiosperm, which attacks great number of broadleaf and coniferous tree species. Especially high damage caused by subspecies V. subsp. abietis, infests fir trees. This paper presents the most frequent parasitic saprophytic fungi occurring on common mistletoe. There are altogether 22 identified species, significant Botryosphaeria dothidea Gibberidea visci Sphaeropsis visci. Further study should be focused testing their potential use in biocontrol

Inonotus hispidus develops as a parasite on living trees and causes white, central rot. Infections occur through injuries branches or stems. Its ability to cause cankers differentiates it from fungi that only heart In Serbia, is quite frequent Persian walnut (Juglans regia), black nigra), plane tree (Platanus acerifolia) common ash (Fraxinus excelsior). urban conditions, apart trees, carpophores sometimes horse chestnut (Aesculus hippocastanum), sycamore maple (Acer pseudoplatanus), Turkey...

This paper describes 15 species of fungi in the order Uredinales, causing diseases known as "rusts". These develop obligate parasites and cause very dangerous on cultivated plants. Among "rusts" occurring trees, following rusts are special economic significance Melampsorella caryophyllacearum (rust fir), Cronartium flaccidum two-needle pines) Melampsora (rusts poplars). Fungi Chrysomyxa pirolata, Pucciniastrum epilobii, Gymnosporangium clavariiforme G. tremelloides have been identified for...

Abstract When monitoring the health status of various woody host plants in urban areas Serbia, symptoms indicative Cryphonectria ‐like infection were recorded on European hornbeam ( Carpinus betulus ) trees natural monument ‘Arboretum Faculty Forestry Belgrade’. One tree was affected by crown dieback while another one showed branches. Bark lesions found stems which contained numerous stromata with fruiting bodies and orange tendrils. Conidiomata solely infected tissue, producing hyaline,...

The genus Tiarosporella consists of eight species which four occur on conifers. These fungi differ in conidial size and the form appendages that distal end conidia (pycnospore). In Europe only two have been recorded. T. parca occurs Picea (P. abies P. omorika), while durmitorensis infests fir (Abies alba). can be considered, as an endophyte, it sporulates when needles die due to a stress or old age. is very aggressive pathogen colonizing all ages. Together with other fungi, leads tree death....

Fungus G. abietina is one of the most dangerous pathogenic fungi occurring in conifer plantations and Pinus species are especially at risk. Among pines, susceptible Austrian pine, particularly endangered between 8 25 years age. This fungus was found Serbia Montenegro on Scots pine spruce, but it only mountainous regions (Kopaonik, Vlasina, Goc, Durmitor). forms both stages (anamorph teleomorph) its development. The imperfect form far more significant for infection process, i.e. pycnidial...

Different critical periods for infection, the difference in morphological-anatomical and eco-physiological characteristics other distinguish support taxonomic concept on existence of several Lophodemium spp. pines. In addition to study secondary needles, was extended also primary needles. The results our long-term research, compared obtained by researchers Europe, show that Serbia there are at least two widely distributed species infecting Scots pine Austrian This is supporting with...