2 edition of Effects of Arceuthobium americanum on twig growth of Pinus contorta found in the catalog.
Effects of Arceuthobium americanum on twig growth of Pinus contorta
by U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station in Portland, Or
Written in English
|Statement||Nancy Broshot, Lynn Larsen, and Robert Tinnin|
|Series||Research note PNW -- RN 453, Research note PNW -- 453|
|Contributions||Larsen, Lynn, Tinnin, Robert, Pacific Northwest Research Station (Portland, Or.)|
|The Physical Object|
|Pagination||6 p. ;|
Arceuthobium americanum is a species of dwarf mistletoe known as American dwarf mistletoe and lodgepole-pine dwarf is a common plant of western North America where it lives in high elevation pine forests. It is a parasitic plant which lives upon the Lodgepole Pine, particularly the subspecies Pinus contortus ssp. murrayana, the Tamarack Pine. Arceuthobium americanum. Fleshy, parasitic plant found on lodgepole pines (Pinus contorta) Produces witches’ brooms - a bushy growth of twigs in the host plant’s crown; Leafless, olive-green, whorled stems Rain dissolves the mucous coating and the seed slides down to a twig and germinates. Several species of grouse (Phasianidae spp.
Description Top of page Like other Arceuthobium spp., A minutissimum is an obligate parasite with an endophytic 'root' system ramifying within the host branch. This endophyte expands within the cortex and becomes embedded in the xylem for some years before aerial shoots are produced, encircling the infected branch and growing along it. A. minutissimum is the smallest known terrestrial. Broshot, Nancy, Lynn Larsen, and Robert Tinnin. Effects of Arceuthobium americanum on twig growth of Pinus contorta. USDA. Forest Service Research Notes PNW-RN Broshot, Nancy E. and Robert O. Tinnin. The effect of dwarf mistletoe on starch concentrations in the twigs and needles of lodgepole pine. Can. J. For. Res.
An illustration of an open book. Books. An illustration of two cells of a film strip. Early wide spacing in red alder (Alnus rubra Bong.): effects on stem form and stem growth. by Bormann Effects of Arceuthobium americanum on twig growth of Pinus contorta. by Broshot, Nancy; Larsen, Lynn. Anti-inflammatory effects. Several in vitro studies have revealed that PBE has anti-inflammatory effects and inhibits the initiation of inflammation by preventing the release of pro-inflammatory mediators regulated by oxidative stress. PBE inhibits the pro-inflammatory mediators in keratinocytes (epidermal cells), leukocytes, and endothelial cells(32,35,36).
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Twigs from Pinus contorta infected with Arceuthobium americanum (table 3). In most cases our measures showed the greatest growth for needles and twigs from uninfected branches, less growth for locally infected branches, and the least growth for systemically infected branches.
Twig length is an exception to this patternCited by: 5. Additional Physical Format: Online version: Broshot, Nancy. Effects of Arceuthobium americanum on twig growth of Pinus contorta. Portland, Or.: U.S. Dept. Effects of Arceuthobium americanum on twig growth of Pinus contorta Effects of Arceuthobium americanum on twig growth of Pinus contorta by Broshot, Nancy; This book is available with additional data at Biodiversity Heritage Library.
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URL for Current Page Effects of Arceuthobium americanum on twig growth of Pinus contorta / By. Broshot, Nancy. Larsen, Lynn. If you are generating a PDF of a journal article or book chapter, please feel free to enter the title and Cited by: 5.
Effects of Arceuthobium americanum on twig growth of Pinus contorta / By Nancy. Broshot, Robert. Tinnin, Lynn. Larsen and Or.) Pacific Northwest Research Station (Portland. Abstract. Bibliography: p.
6."November "Distributed to depository libraries in n of access: Internet. Effects of Arceuthobium americanum on twig growth of Pinus contorta / By Nancy. Broshot, Lynn. Larsen, Robert. Tinnin and Or.) Pacific Northwest Research Station (Portland. Abstract. no Topics: Diseases and pests, Dwarf mistletoes, Host plants.
Effects of Arceuthobium americanum on twig growth of Pinus contorta / By Nancy. Broshot, Lynn. Larsen, Robert. Tinnin and Or.) Pacific Northwest Research Station (Portland.
Following a request from the European Commission, the EFSA Panel on Plant Health performed a pest categorisation of Arceuthobium spp.
(non‐EU), a well‐defined and distinguishable group of parasitic plant species of the family Viscaceae, also known as dwarf mistletoes.
These are flowering plants parasitising a wide range of conifers of the families Pinaceae and Cupressaceae. Dwarf Mistletoe (Arceuthobium americanum Nutt. ex Engelm.) is an important pathogen of the important commercial tree species jack pine (Pinus banksiana Lamb.).
Dwarf mistletoe alters the growth form, suppresses growth and reduces volume and overall wood quality of the host tree. Few studies have quantified these effects on jack pine in Manitoba. Genre/Form: book: Additional Physical Format: Print version: Broshot, Nancy.
Effects of Arceuthobium americanum on twig growth of Pinus contorta. Portland, Or. Agne, M.C. Influence of dwarf mistletoe (Arceuthobium americanum) on stand structure, canopy fuels, and fire behavior in lodgepole pine (Pinus contorta) forests 21–28 years post-mountain pine beetle (Dendroctonus ponderosae) epidemic in central thesis, Department of Forest Engineering, Resources, and Management, Oregon State University, Corvallis, Oreg.
Godfree R.C. Lodgepole pine dwarf mistletoe (Arceuthobium americanum) in central Oregon lodgepole pine (Pinus contorta var. murrayana) stands: effects on crown architecture, population dynamics, canopy structure and understory composition.
Germination, penetration, and infection by Arceuthobium americanum on Pinus banksiana Article (PDF Available) in Canadian Journal of Forest Research 35(8) February with Reads.
The seedlings of most Arceuthobium spp. can only penetrate young branches less than 5 years old, but those of A. americanum can establish on branches of P. contorta up to 60 years old, developing a 'penetration wedge' after germination, which enters the cortex and then ramifies throughout the bark, developing sinkers into the xylem.
Lodgepole pine dwarf mistletoe (Arceuthobium americanum), an aggressive parasite of lodgepole pine (Pinus contorta subsp. latifolia), is limited, in the Central Rocky Mountains, to montane host “islands.”We sought to quantify the effect of the insularity and life history of A.
americanum on its population genetic structure by considering three questions: (1) Do apparent limits. Arceuthobium americanum is a ular plant which is parasitic upon Pi nus contorta var. murrayana. Its documented effects include reductions in host growth, vigor and wood qua I ity.
Dwarf mistletoe (Arceuthobium spp.) is a hemiparasite that is said to be the single‐most destructive pathogen of commercially valuable coniferous trees in many regions of the world. Although its dest. Arceuthobium americanum spreads directly into the regenerating Pinus contorta Dougl.
ex Loud., while A. tsugense persists in refugia for years or more following fire. Literature pertaining to the impact of forest pests on timber productivity in the prairie provinces and Northwest Territories is reviewed.
The discussion of impact is largely confined to growth loss and tree mortality, and quality reduction is considered in some cases. Potential and actual depletions caused by wood decay, armillaria root rot (Armillaria spp.), lodgepole pine dwarf mistletoe. While lodgepole pine dwarf mistletoe, Arceuthobium americanum Nutt.
ex Engelm., is one of the most damaging pests of jack pine (Pinus banksiana Lamb.) in western Canada, no studies have examined the life cycle of this parasite in this pathosystem. Twenty-five jack pine trees in a plantation in Edmonton, Alberta, were inoculated with seeds of A.
americanum in the fall of and .We investigate and discuss the effects of pine mistletoe (Viscum album ssp. austriacum, Santalaceae) on branch wood and needle anatomy of Scots pine (Pinus sylvestris, Pinaceae).
Parasitized and nonparasitized branches of Scots pine were sampled from host tree .Facts About. Dwarf mistletoe is a parasitic plant that grows on the branches of pine, spruce, and tamarack. It derives its nutrients from the plant, and also causes unusual growths of twigs on the host, called witches brooms, within which you can see the yellow-red shoots of .