Journal ArticleDOI
The mode of infection and early stages of colonization of pines by Gremmeniella abietina
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Gremmeniella abietina infects shoots of red and Scots pines through stomata on bracts that subtend short shoots and sparsely colonizes bract tissue by late summer or fall.Abstract:
Gremmeniella abietina infects shoots of red and Scots pines through stomata on bracts that subtend short shoots. The germ tube penetrates between guard cells and sparsely colonizes bract tissue by late summer or fall. Only after about late January or early February of the following year does the fungus extend from the bract and begin colonization of the short shoot and surrounding cortical tissue.read more
Citations
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Journal ArticleDOI
Fungal diseases in forest nurseries in Finland.
TL;DR: Growers are encouraged to use cultural and integrated pest management techniques such as better nursery hygiene, including removing plant debris in nursery growing areas and hot water washing of containers plus removal of diseased, spore-producing seedlings and trees around the nursery.
Journal ArticleDOI
Disease history of Gremmeniella abietina in a Pinus sylvestris stand
Juha Kaitera,Risto Jalkanen +1 more
TL;DR: A new method has been developed for studying the history of Gremmeniella abietina infection in Scots pine (Pinus sylvestris) stands based mainly on the occurrence of necrotic cankers and scars caused by G. abietinas in annual shoots of branches.
Journal ArticleDOI
Formation of Ligno-Suberized Tissues in Jack Pine Resistant to the European Race of Gremmeniella abietina.
TL;DR: This is the first demonstration of an anatomical defense mechanism of a conifer against Scleroderris canker and Restoration of cambial activities and tissue regeneration following necrophylactic periderm formation were suggested as essential factors in the defense system of P. banksiana against the EU race of G. abietina.
Journal ArticleDOI
Infection experiments with Gremmeniella abietina on seedlings of Norway spruce and Scots pine
Pia Barklund,Torgny Unestam +1 more
TL;DR: Conidia of Gremmeniella abietina infected and caused disease symptoms in annual shoots of both Scots pine and Norway spruce seedlings and was favoured by low temperature in both hosts.
Journal ArticleDOI
Studies of the life cycle of Gremmeniella abietina on Scots pine in southern Sweden
M. Hellgren,Pia Barklund +1 more
TL;DR: Aspects of the life cycle of Gremmeniella abietina (Lagerb.) Morelet were studied from 1988 to 1990 in stands of Pinus sylvestris L., 16–32 years old, in southern Sweden, initiated in 1988 with a widespread outbreak of the disease.
References
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Journal ArticleDOI
The development of a more virulent strain of Scleroderris lagerbergii in New York State
TL;DR: The disease pattern indicates that a new more virulent strain of S. lagerbergii is now present in North America, and has recently killed several thousand hectares of large red and Scotch pine trees in northern New York State.
Journal ArticleDOI
Epidemiology of Scleroderris lagerbergii.
TL;DR: The epidemiology of S. lagerbergii is discussed, described as the most serious disease present in red pine plantations in North America, and its mode of infection, production of inoculum, and development of epidemics are discussed.
Journal ArticleDOI
Dieback Disease of Pines with Special Reference to Corsican Pine, Pinus Nigra var. Calabrica schn. I. The Nature of the Disease Symptoms and their Development in Relation to the Crown and to Aspect
Journal ArticleDOI
Anatomische Untersuchungen zur Infektionsbiologie von Sderoderris lagerbergii Gr. [Brunchorstia pinea (Karst.) von Höhn]1
K. J. Lang,P. Schütt +1 more
TL;DR: Anatomical studies on the infection biology of Scleroderris lagerberii (Brunchorstia pinea) and infection of Pinus nigra shoots by B. pinea were studied by means of both ordinary light and fluorescent microscopy.
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