Mistletoes of North American conifers

Geils, Brian W.; Cibrian-Tovar, Jose; Moody, Benjamin

doi:10.2737/rmrs-gtr-98

Cited by 75 publications

(62 citation statements)

References 106 publications

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“…Whereas the dwarf mistletoes in North America may be managed as destructive forest pests (71), in New Zealand, several loranths are considered endangered species and are managed for preservation (51). Viscum album is used in the pharmaceutical industry and is cultivated commercially (32).…”

Section: Managing Mistletoesmentioning

confidence: 99%

“…The primary control of pest mistletoes remains pruning infected branches and removing infected trees (31,71,86,226). Removal of mistletoe plants from infected branches does not kill the mistletoe, and resprouting from the haustorial system often occurs.…”

Section: Managing Mistletoesmentioning

confidence: 99%

“…This practice removes dwarf mistletoes from the site, and silvicultural practices can then prevent their reintroduction. The management of dwarf mistletoes in North America has been summarized (71,92,191). The silvicultural techniques that control dwarf mistletoes are well understood (85,92,146), and the proper implementation of a control program is often the key issue in their management.…”

Section: Managing Mistletoesmentioning

confidence: 99%

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Mistletoes: Pathology, Systematics, Ecology, and Management

et al. 2008

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Section: Managing Mistletoesmentioning

confidence: 99%

Section: Managing Mistletoesmentioning

confidence: 99%

Section: Managing Mistletoesmentioning

confidence: 99%

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Mistletoes: Pathology, Systematics, Ecology, and Management

et al. 2008

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“…The genus ranges from temperate North America to temperate South America, with the greatest species diversity found in the tropics. Over this vast range the genus parasitizes not only hardwoods but also several conifers (Geils et al 2002). The fruit of Phoradendron, a pseudoberry, is bird dispersed.…”

Section: Volume 27mentioning

confidence: 99%

Epiparasitism in Phoradendron durangense and P. falcatum (Viscaceae)

Calvin¹,

Wilson²

2009

aliso

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Phoradendron, the largest mistletoe genus in the New World, extends from temperate North America to temperate South America. Most species are parasitic on terrestrial hosts, but a few occur only, or primarily, on other species of Phoradendron. We examined relationships among two obligate epiparasites, P. durangense and P. falcatum, and their parasitic hosts. Fruit and seed of both epiparasites were small compared to those of their parasitic hosts. Seed of epiparasites was established on parasitic-host stems, leaves, and inflorescences. Shoots developed from the plumular region or from buds on the holdfast or subjacent tissue. The developing endophytic system initially consisted of multiple separate strands that widened, merged, and often entirely displaced its parasitic host from the cambial cylinder. During establishment the epiparasite invaded the cortex, vascular cylinder, and pith of its parasitic host and spread aggressively within host tissues, extending between and into individual host parenchyma cells, eventually isolating host cells or cell groups. The parasitic host showed little visual response to the epiparasite. Endophytic system growth of the epiparasite within its parasitic host was compared to that of a parasitic Phoradendron within its terrestrial host. The results indicate growth dynamics similar to those of parasitic species on terrestrial hosts. We conclude that the epiparasite/parasitic-host union should not be regarded as a graft union. The harmonious appearance of the union is a result of the growth of the epiparasite replacing entirely tissues of its parasitic host, with little or no hypertrophy of parasitic-host branches.

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“…The parasite may exist and grow for several years within the host before producing aerial shoots (Geils et al 2002). Mature female plants produce seeds that are ejected by hydrostatic pressure.…”

Section: Dwarf Mistletoementioning

confidence: 99%

Incidence of insects, diseases, and other damaging agents in Oregon forests.

Dunham¹

2008

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The Forest Service of the U.S. Department of Agriculture is dedicated to the principle of multiple use management of the Nation's forest resources for sustained yields of wood, water, forage, wildlife, and recreation. Through forestry research, cooperation with the States and private forest owners, and management of the national forests and national grasslands, it strives-as directed by Congress-to provide increasingly greater service to a growing Nation.The U.S. Department of Agriculture (USDA) prohibits discrimination in all its programs and activities on the basis of race, color, national origin, age, disability, and where applicable, sex, marital status, familial status, parental status, religion, sexual orientation, genetic information, political beliefs, reprisal, or because all or part of an individual's income is derived from any public assistance program. This report uses data from a network of forest inventory plots sampled at two points in time, annual aerial insect and disease surveys, and specialized pest damage surveys to quantify the incidence and impact of insects, diseases, and other damaging agents on Oregon's forests. The number and volume of trees damaged or killed by various agents is summarized. Differences in the frequency and severity of damaging agents between various ownership categories and geographic regions of the state are investigated.

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Mistletoes of North American conifers

Cited by 75 publications

References 106 publications

Mistletoes: Pathology, Systematics, Ecology, and Management

Mistletoes: Pathology, Systematics, Ecology, and Management

Epiparasitism in Phoradendron durangense and P. falcatum (Viscaceae)

Incidence of insects, diseases, and other damaging agents in Oregon forests.

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