The relative susceptibility of needle- and stem-derived white pine tissue cultures to artificial inoculation with mycelium of Cronartium ribicola

1969 ◽  
Vol 47 (11) ◽  
pp. 1789-1790 ◽  
Author(s):  
A. E. Harvey ◽  
J. L. Grasham
Keyword(s):  
Rust Fungus ◽  
Cronartium Ribicola ◽  
Tissue Cultures ◽  
Pinus Monticola ◽  
White Pine ◽  
Relative Susceptibility ◽  
Blister Rust ◽  
Leaf Mesophyll ◽  
Leaf Tissues ◽  
Artificial Inoculations

Tissue cultures of Pinus monticola Dougl. derived from stem cortex and leaf tissues were found susceptible to artificial inoculations with mycelium from the blister rust fungus (Cronartium ribicola Fisch. ex Rabenh.). Tissue cultures from leaf mesophyll grew slower and were colonized more rapidly by this fungus than those derived from stem cortex.

Resistance to Cronartium ribicola in Pinus monticola: reduced needle-spot frequency

1980 ◽  
Vol 58 (5) ◽  
pp. 574-577 ◽  
Author(s):  
R. J. Hoff ◽  
G. I. McDonald
Keyword(s):  
Mating System ◽  
Rust Fungus ◽  
Low Frequency ◽  
Resistance Factor ◽  
Cronartium Ribicola ◽  
Pinus Monticola ◽  
Horizontal Resistance ◽  
White Pine ◽  
Blister Rust ◽  
Western White Pine

Low frequency of needle spots caused by the blister rust fungus (Cronartium ribicola J. C. Fisch. ex Rabenh.) in western white pine (Pinus monticola Dougl.) appears to be an expression of a horizontal resistance factor in secondary needles. Heritability averaged 37% for two sets of a 4 tester × 10 candidate mating system. We discuss the implications of these results with respect to developing varieties of western white pine resistant to blister rust.

scholarly journals Characterization of Five Novel Mitoviruses in the White Pine Blister Rust Fungus Cronartium ribicola

PLoS ONE ◽  
2016 ◽  
Vol 11 (5) ◽  
pp. e0154267 ◽  
Author(s):  
Jun-Jun Liu ◽  
Danelle Chan ◽  
Yu Xiang ◽  
Holly Williams ◽  
Xiao-Rui Li ◽  
...  
Keyword(s):  
Rust Fungus ◽  
Cronartium Ribicola ◽  
White Pine Blister Rust ◽  
White Pine ◽  
Blister Rust

Assessing host specialization among aecial and telial hosts of the white pine blister rust fungus, Cronartium ribicola

2007 ◽  
Vol 85 (3) ◽  
pp. 299-306 ◽  
Author(s):  
Bryce A. Richardson ◽  
Paul J. Zambino ◽  
Ned B. Klopfenstein ◽  
Geral I. McDonald ◽  
Lori M. Carris
Keyword(s):  
North America ◽  
Rust Fungus ◽  
Host Specialization ◽  
Cronartium Ribicola ◽  
White Pine Blister Rust ◽  
White Pine ◽  
Host Association ◽  
Geographic Population ◽  
Blister Rust ◽  
Low Genetic Diversity

The white-pine blister rust fungus, Cronartium ribicola Fisch. in Rabenh., continues to spread in North America, utilizing various aecial (primary) and telial (alternate) hosts, some of which have only recently been discovered. This introduced pathogen has been characterized as having low genetic diversity in North America, yet it has demonstrated a capacity to invade diverse environments. The recent discovery of this rust fungus on the telial host Pedicularis racemosa Dougl. ex Benth., raises questions of whether this host association represents a recent acquisition by C. ribicola or a long-standing host association that was overlooked. Here we explore two questions: (i) is host specialization detectable at a local scale and (ii) is the capacity to infect Pedicularis racemosa local or widespread? Genetic analysis of C. ribicola isolates from different aecial and telial hosts provided no evidence for genetic differentiation and showed similar levels of expected heterozygosity within a geographic population. An inoculation test showed that diverse C. ribicola sources from across North America had the capacity to infect Pedicularis racemosa. These results support a hypothesis that ability to infect Pedicularis racemosa is common in C. ribicola from North America. Utilization of Pedicularis racemosa by C. ribicola may be dependent on the co-occurrence of this host, inoculum, and favorable environments.

Ultrastructure of hyphal walls and septa of Cronartium ribicola on tissue cultures of Pinus monticola

1973 ◽  
Vol 51 (12) ◽  
pp. 2301-2305 ◽  
Author(s):  
Jane Robb ◽  
A. E. Harvey ◽  
Michael Shaw
Keyword(s):  
Electron Microscopy ◽  
Rust Fungus ◽  
Callus Cultures ◽  
Fungal Mycelium ◽  
Cronartium Ribicola ◽  
Tissue Cultures ◽  
Pinus Monticola ◽  
Host Parasite ◽  
Lateral Walls

Colonies of the rust fungus Cronartium ribicola J. C. Fischer were grown axenically and then transferred so that they lay immediately next to callus cultures of the pine host (Pinus monticola Dougl.). Twelve days after the establishment of this association samples of the fungal mycelium taken 2 mm away from the pine callus and at the host–parasite interface were fixed for electron microscopy. Differences were found in the appearance and thickness of the lateral walls and extracellular coatings depending on the proximity of the fungus to the host–parasite interface. Septa were intermediate in structure between the Ascomycete and dolipore types. The origin of the extracellular sheath is discussed.

scholarly journals First Report of the White Pine Blister Rust Fungus, Cronartium ribicola, Infecting Ribes inerme in North-Central Utah

Plant Disease ◽  
2017 ◽  
Vol 101 (2) ◽  
pp. 386-386
Author(s):  
D. R. Vogler ◽  
B. W. Geils ◽  
K. Coats
Keyword(s):  
Rust Fungus ◽  
Cronartium Ribicola ◽  
White Pine Blister Rust ◽  
White Pine ◽  
North Central ◽  
First Report ◽  
Blister Rust
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