Resistance to Diseases and Pests in Forest Trees

Total Page:16

File Type:pdf, Size:1020Kb

Resistance to Diseases and Pests in Forest Trees Theworksho pwa sorganize db y the InternationalUnio no fForestr yResearc h Organizations and sponsoredb yth eNort hAtlanti c Treaty Organization,th e Heidemij (RoyalNetherland s LandDevelopmen t andReclamatio n Society)an d theMinistr y ofAgricultur e andFisherie s ofth eNetherlands . 'O Resistance to diseases and pests infores t trees Proceedings of the Third International Workshop on the Genetics of Host-Parasite Interactions in Forestry, Wageningen,th e Netherlands, 14-21 September 1980 Editedb y H.M. Heybroek, B.R.Stepha n and K.vo nWeissenber g X pudoc Y Centre for Agricultural Publishing and Documentation Wageningen - 1982 YS "v lb1-*. "2- 2-fc? - -£> ' PrecedingWorkshops : Genetic improvement fordiseas e andinsec tresistanc e of foresttrees , 30Augus tt o 11Septembe r 1964;a NAT O andNS FAdvance d Study Institute. Pennsylvania StateUniversity ,Universit y Park,Pennsylvania ,USA . Proceedings:H.D . Gerhold,E.J . Schreiner,R.E .McDermot t& J.A .Winiesk i (Eds):Breedin gPest-Resistan t Trees.Pergamo nPress ,Oxford . 1966.50 5p . Basicbiolog y and international aspectso frus tresistanc e infores t trees, 17-24Augus t 1969;a NATO-IUFR OAdvance d Study Institute. University of Idaho,Moscow , Idaho,USA . Proceedings:R.T .Bingham , R.J.Hof f& G.I .McDonal d (Eds):Biolog y ofRus t Resistance inFores tTrees .USD A ForestService ,Miscellaneou s Publication No 1221.1972 .68 1p . ISBN 9022 0 07944 © Centre forAgricultura l Publishing andDocumentatio n (Pudoc), Wageningen,1982 . 'Nopar to fthi spublicatio nma yb ereproduced , stored ina retrieva l sys­ tem,o rtransmitte d inan y formo rb y anymeans ,mechanical ,photocopying , recording,o rotherwise ,withou tth eprio rwritte npermissio n ofth e publisherPudoc ,P.O . Box4 ,670 0A AWageningen ,Netherlands . Printed inth eNetherlands . Contents Breeding for balance? An introduction ix TOPIC 1: INTRODUCTORY B.J. Zobel: Theworld' s need forpest-resistan t foresttree s 1 I.A.S. Gibson, J. Burleu <£ M. R. Speight: The adoptiono f agricultural practices forth e developmento fheritabl e ' resistance topest s andpathogen s in forestcrop s 9 TOPIC 2: HOST-PARASITE INTERACTION AND THE ENVIRONMENT W.H. Parry: Therol eo fth eenvironmen t inhost-insec t interactions 22 W.H. Parry: Variability inconife rneedl e freezing asa resistance factort o aphids 32 P. Schutt: Trees,fungi ,an denvironmen t 39 M. Ridé: Environmental factors affecting host-bacteria inter­ actions inbacteria l diseases of foresttree s and shrubs 48 H.S. McNabb Jr., R.B. Hall &M.E. Ostry: Biological and physical modifications ofth eenvironmen t andth eresult ­ ing effectupo nth ehost-parasit e interactions inshort - rotation treecrop s 60 TOPIC 3: HOST-PARASITE INTERACTIONS AND GENETICS ON THE INDIVIDUAL PLANT LEVEL M.K. Harris: Genes forresistanc e to insects inagricultur e witha discussio n ofhost-parasit e interactions in Carya 72 R.R. Nelson: Ongene s fordiseas e resistance inplant s 84 TOPIC 4: RESISTANCE MECHANISMS AND THEIR GENETIC CONTROL G.S. Puritch <£G.D. Jensen: Non-specifichost-tre eprocesse s occurring inbar k inrespons et odamag e andthei rrol e indefens e 94 A.L. Shigo: Treesresistan tt osprea d ofdeca y associated withwound s 103 F.F. Jewell, D.C. Jewell & C.H. Walkinshaw: Histopathology ofanatomica lmechanism s forresistanc e to fusiform rusti nslas hpin e 110 B. B. Kinloch: Mechanisms and inheritance ofrus t resistance inconifer s 119 R. Siwecki, A. Werner, Z. Krzan & F. Miodzianowski: Resistance mechanisms in interactionsbetwee npoplar s andrus t 130 D.M. Elgersma: Resistance mechanisms ofelm st oDutc hel m disease 143 Y. Mamiya: Pinewil tan dpin ewoo dnematode : histopathological aspects ofdiseas e development 153 TOPIC 5: BIOCHEMICAL ASPECTS IN RESISTANCE BREEDING M.R. Bridgen & J.W. Hanover: Indirect selection for pest resistance usingterpenoi d compounds 161 H.J. Schuck: Monoterpenes andresistance.o fconifer s to fungi 169 F. Scholz & B.R. Stephan: Buffering ofp H inplan torgan s and resistance against fungi 176 Z.C. Chen & P.D. Manion: Histoenzymologicalapproac hfo rde ­ tectinghost-parasit e interactions in foresttree s caused byheart-ro t diseases 187 G.I. Forrest: Preliminary work onth erelatio nbetwee nresis ­ tancet o Fomes annosus andth emonoterpen e composition ofSitk a spruce resin 194 E.I. Ladejtschikova & G.M. Pasternak: Biochemical aspects of the resistance of Pinus sylvestris to Fomes annosus 198 P.J. Charles, A. Delplanque, A. Marpeau, C. Bernard-Dagan & M. Arbez: Susceptibility ofEuropea nblac kpin e (Pinus nigra) toth eEuropea npin e shootmot h (Rhyacionia buoliana): variations of susceptibility atth eprovenanc e andindividua l levelo fth epin e andeffec to fterpen e composition 206 TOPIC 6: GENETIC VARIATION IN FUNGAL PATHOGENICITY CE. Caten: Genetic basis forvariatio n in fungi 213 CM. Brasier: Genetics ofpathogenicit y in Ceratocystis ulmi andit ssignificanc efo rel mbreedin g 224 H. R. Powers, Jr. :Pathogeni cvariabilit ywithi nth egenu s Cronartium 236 G.A. Snow, W.L. Nance & E.B. Snyder: Relativevirulenc e of Cronartium quercuum f. sp. fusiforme on loblollypin e fromLivingsto nparis h 243 R.D. Raabe: Variationi npathogenicit yan dvirulenc ei n Fomes annosus and Armillaria mellea 251 L. Dimitri: Somehost/parasit e relationshipsbetwee nNorwa y spruce (Picea abies) and Fomes annosus 260 C. Delatour: Behaviouro f Fomes annosus inth este mo fNorwa y sprucean di nth elaborator y 268 C.H. Driver, D.R. Morse & R.L. Edmonds: Detectiono fdiseas e resistancei nDouglas-fi r seedlingsan dvariatio ni n pathogenicityi n Phellinus weirii bymonitorin gwate r stress after inoculation 275 L.D. Dwinell & J.B. Barrows-Broaddus: Variability ofhos tan d pathogeni nth epitc h canker complex 283 TOPIC 7: POPULATION GENETICS AND BREEDING FOR BALANCE N. Lorimer: Pestoutbreak sa sa functio no fvariabilit yi n pestsan dplant s 287 W.J. Mattson, N. Lorimer &A.A . Leary: Roleo fplan tvariabil ­ ity (traitvecto r dynamicsan ddiversity )i nplant/herbi ­ vore interactions 295 E.G. Brittain: Stabilityi na multi-componen thost-pathoge n model 304 D. Krusche: Selectioni nhost-parasit e systems 312 C. Person, R. Fleming & L. Cargeeg: Non-specific interaction basedo npolygene s 318 H.M. Heybroek: Monocultureversu smixture :interaction s between susceptiblean dresistan ttree si na mixe d stand 326 W.J. Libby: Whati sa saf enumbe ro fclone spe rplantation ? 342 A. Segal, J. Manisterski, J. A. Browning, G. Fischbeck & I. Wahl: Balancei nindigenou splan tpopulation s 361 J. A. Browning, J. Manisterski, A. Segal, G. Fischbeck <S I. Wahl: Extrapolationo fgeneti can depidemiologi c concepts from indigenousecosystem st oagroecosystem s 371 V. Umaerus: Newproblems ,trend san dvision si nagricultura l resistancebreedin g 381 TOPIC 8: PRESENTATION AND ANALYSIS OF CURRENTBREEDING PROGRAMS K. Ohba: Breedingo fpine s forresistanc et oth ewoo dnematode , Bursaphelenchus lignicolus 387 G. Bazzigher: TheSwis s£ndothia-resistanc ebreedin gprogra m 396 G.I. McDonald & R.J. Hoff: Engineeringbliste rrust-resistan t westernwhit epin e 404 C. Delatour & Y. Birot: Theinternationa lIUFR Oexperimen to n resistanceo fwhit epine st obliste r rust (Cronartium ribicola). TheFrenc htria l 412 I. Blada: Relativebliste r rustresistanc eo fnativ eand * introduced whitepine si nRomani a 415 B. Zobel: Developing fusiform-resistant treesi nth esouth ­ easternUnite d States 417 H.R. Powers, Jr., S.D. Hubbard & R.L. Anderson: Testing for resistancet ofusifor m rusto fpin e 427 P. Raddi & A. Ragazzi: Italianstudie so nresistanc et opin e blisterrus t (Cronartium flaccidum) 435 R. Jalkanen: Lophodermella sulcigena inclone s andprogenie s ofScot spin ei nFinlan d 441 I. Baumanis, D. Pirags & Z. Spalvins: Resistance trials of Scotchpin eclone si nth eLatvia nSS R 448 0. Martinsson: Impacto fwester n gall rusti nnatura l stands oflodgepol epin e ' 450 R.J. Dinus: Integrating resistancebreedin g andtre eimprove ­ ment 452 G.I. McDonald: Progeny testingo fDouglas-fi r seedlingsfo r resistancet owester n sprucebudwor m 460 1. Blada: Testing larch clonesfo r Adelges laricis resistance . 466 W.H. Fogal, E.K. Morgenstern, P. Viidik & C.W. Yeatman: Varia­ tioni nsusceptibilit yo fnativ ean dintroduce d coniferous treest osom e insectso feaster nCanad a 472 M. Ridé : Internationalbacteria l cankertestin gprogramm eo n poplar 478 TOPIC 9: CONCLUDING REMARKS H.D. Gerhold: Acoevolutionar y viewo fresistanc e breeding andresearc h 487 Recommendations 496 Index of hosts and parasites 498 Vlll Breeding for balance? An introduction Breeding forresistanc e to aparasit e isbreedin g against aflexibl e adversary: onecanno ttak e itfo rgrante d thatresistance ,onc e obtained, will remain atth e same level.Th eparasit ema y comeu pwit hrar e orne w geneticvariant s thatcircumven tth eresistanc e andrende r thehos tsuscep ­ tible.Therefore ,breedin g forresistanc e toa parasit e is fundamentally different frombreedin g forresistanc e to frost,drought ,sal to rsom e otherenvironmenta l extreme. ' Foresttre ebreeding , at firstsight ,i sparticularl y vulnerablet o changes inth eparasite , asa quic kchang e fromon etre e species to another isdifficul t to achieve infores tmanagemen twithou tbi g losses.Thi si s causedb y the facttha t forestryha s alon gtim e scale compared toagricul ­ ture:th e agriculturalplan tbreede rma yconside r someresistanc e tob e 'stable'i fi tdoe sno terod ewithi ntwent y years,whic h ismor e thanth e normal lifetime ofa cultivar ; formos t foresttrees ,however ,thi s isonl y halfth e lifetime ofa singl ecrop . There isn ocaus e fordespair ,however , forther
Recommended publications
  • Effectiveness of Pheromone Mating Disruption for the Ponderosa
    AN ABSTRACT OF THE THESIS OF Christine G. Niwa for the degree of Doctor of Philosophy in Entomologypresented on October 24, 1988 Title: Effectiveness of Pheromone Mating Disruption for the Ponderosa Pine Tip Moth, Rhyacionia zozana (Kearfott) (Lepidoptera: Tortricidae), and its Influence on the Associated Parasite Complex Abstract approved: Redacted for Privacy ____(Garyy,w;Aterman Redacted for Privacy Tim DSchowalter The importance of pheromones in insect control relies both on their ability to reduce pest populations and on their relatively benign effects on nontarget organisms.This study was conducted to test the effectiveness of a pheromone application for mating disruption of the ponderosa pine tip moth, Rhyacionia zozana (Kearfott), and to determine if this treatment had any affect on the abundance or structure of the associated parasite complex. Chemical analyses, electroantennograms, and field bioassays showed that the most abundant pheromone component for R. zozana was E-9-dodecenyl acetate with a lesser amount of E-9-dodecenol also present. Acetate/alcohol ratios averaged 70:30 in gland washes; male moths were most attracted to sticky traps with synthetic baits containing ratios ranging from 70:30 to 95:5. Sixteen hymenopteran and one dipteran species of parasites were recovered from R. zozana larvae and pupae collected in Calif. and Oreg. Total percentage parasitism was high, averaging 47.2%. The ichneumonid, Glypta zozanae Walley and Barron, was the most abundant parasite, attacking over 30% of the hosts collected. Mastrus aciculatus (Provancher) was second in abundance, accounting for less than 4% parasitism. Hercon laminated-tape dispensers containing synthetic sex pheromone (a 95:5 mixture of E-9-dodecenyl acetate and E-9-dodecenol) were manually applied on 57 ha of ponderosa pine plantations in southern Oreg.
    [Show full text]
  • Cytospora Canker
    report on RPD No. 604 PLANT April 1996 DEPARTMENT OF CROP SCIENCES DISEASE UNIVERSITY OF ILLINOIS AT URBANA-CHAMPAIGN CYTOSPORA OR LEUCOSTOMA CANKER OF SPRUCE Cytospora or Leucostoma canker, the most common and damaging disease of spruce, is caused by the fungus Leucocytospora kunzei, synonym Cytospora kunzei (teleomorph or sexual state Leucostoma kunzei, synonym Valsa kunzei). This canker occurs on several conifers from New England to the western United States. Colo- rado or Colorado blue (Picea pungens) and Norway spruce (Picea abies), used for ornament and in wind- breaks, are the species most commonly affected in Illinois. The disease has reached epidemic proportions on Engelmann spruce (Picea engelmannii) and Douglas- fir (Pseudotsuga menziesii) in the eastern Rocky Mountains due to a succession of dry years in the area. Other trees reported as susceptible to the disease are given in Table 1. Spruce trees less than 10 to 15 years old usually do not have Cytospora canker. In landscape nurseries, how- ever, small branches of young Colorado blue and oc- casionally white spruces may be killed. Three varieties of Leucostoma kunzei are recognized by some spec- ialists: var. piceae on spruces, var. superficialis on pines, and var. kunzei on other conifers. Figure 1. Colorado spruce affected by Cytospora Dead and dying branches call attention to Cytospora or canker. Leucostoma canker with older branches more suscep- tible than young ones. The fungus kills areas of bark, usually at the bases of small twigs and branches, creating elliptical to diamond-shaped lesions. If the lesions enlarge faster than the stem and girdle it, the portion beyond the canker also dies.
    [Show full text]
  • Section 2. Jack Pine (Pinus Banksiana)
    SECTION 2. JACK PINE - 57 Section 2. Jack pine (Pinus banksiana) 1. Taxonomy and use 1.1. Taxonomy The largest genus in the family Pinaceae, Pinus L., which consists of about 110 pine species, occurs naturally through much of the Northern Hemisphere, from the far north to the cooler montane tropics (Peterson, 1980; Richardson, 1998). Two subgenera are usually recognised: hard pines (generally with much resin, wood close-grained, sheath of a leaf fascicle persistent, two fibrovascular bundles per needle — the diploxylon pines); and soft, or white pines (generally little resin, wood coarse-grained, sheath sheds early, one fibrovascular bundle in a needle — the haploxylon pines). These subgenera are called respectively subg. Pinus and subg. Strobus (Little and Critchfield, 1969; Price et al., 1998). Occasionally, one to about half the species (20 spp.) in subg. Strobus are classified instead in a variable subg. Ducampopinus. Jack pine (Pinus banksiana Lamb.) and its close relative lodgepole pine (Pinus contorta Dougl. Ex Loud.) are in subg. Pinus, subsection Contortae, which is classified either in section Trifoliis or a larger section Pinus (Little and Critchfield, 1969; Price et al., 1998). Additionally, subsect. Contortae usually includes Virginia pine (P. virginiana) and sand pine (P. clausa), which are in southeastern USA. Jack pine has two quite short (2-5 cm) stiff needles per fascicle (cluster) and lopsided (asymmetric) cones that curve toward the branch tip, and the cone scales often have a tiny prickle at each tip (Kral, 1993). Non-taxonomic ecological or biological variants of jack pine have been described, including dwarf, pendulous, and prostrate forms, having variegated needle colouration, and with unusual branching habits (Rudolph and Yeatman, 1982).
    [Show full text]
  • Pathogenicity and Distribution of Two Species of Cytospora on Populus Tremuloides in Portions of the Rocky Mountains and Midwest in the United T States ⁎ M.M
    Forest Ecology and Management 468 (2020) 118168 Contents lists available at ScienceDirect Forest Ecology and Management journal homepage: www.elsevier.com/locate/foreco Pathogenicity and distribution of two species of Cytospora on Populus tremuloides in portions of the Rocky Mountains and midwest in the United T States ⁎ M.M. Dudleya, , N.A. Tisseratb, W.R. Jacobib, J. Negrónc, J.E. Stewartd a Biology Department, Adams State University, Alamosa, CO, United States b Department of Agricultural Biology (Emeritus), Colorado State University, Fort Collins, CO, United States c USFS Rocky Mountain Research Station, Fort Collins, CO, United States d Department of Agricultural Biology, Colorado State University, Fort Collins, CO, United States ABSTRACT Historically, Cytospora canker of quaking aspen was thought to be caused primarily by Cytospora chrysosperma. However, a new and widely distributed Cytospora species on quaking aspen was recently described (Cytospora notastroma Kepley & F.B. Reeves). Here, we show the relative pathogenicity, abundance, and frequency of both species on quaking aspen in portions of the Rocky Mountain region, and constructed species-level phylogenies to examine possible hybridization among species. We inoculated small-diameter aspen trees with one or two isolates each of C. chrysosperma and C. notastroma in a greenhouse and in environmental growth chambers. Results indicate that both Cytospora species are pathogenic to drought-stressed aspen, and that C. chrysosperma is more aggressive (i.e., caused larger cankers) than C. notastroma, particularly at cool temperatures. Neither species cause significant canker growth on trees that were not drought-stressed. Both C. chrysosperma and C. notastroma are common on quaking aspen, in addition to a third, previously described species, Cytospora nivea.
    [Show full text]
  • Resistance to Phytophthora Cinnamomi in the Genus Abies
    Proceedings of the 4th International Workshop on Genetics of Host-Parasite Interactions in Forestry Resistance to Phytophthora cinnamomi in the Genus Abies John Frampton,1 Fikret Isik,1 Mike Benson,2 Jaroslav Kobliha,3 and Jan Stejskal3 Abstract A major limiting factor for the culture of true firs as Christmas trees is their susceptibility to Oomycete species belonging to the genus Phytophthora. In North Carolina alone, the Fraser fir (Abies fraseri [Pursh] Poir.) Christmas tree industry loses 6 to 7 million dollars annually to root rot primarily caused by Phytophthora cinnamomi. Because no resistance has been found in Fraser fir, in 2003, the North Carolina State University (NCSU) Christmas Tree Genetics (CTG) Program conducted an extensive resistance screening of 32 Abies species (50 unique taxa) from around the world. Overall mortality was high (88 percent), but was less frequent in two of the eight taxonomic sections of the genus evaluated: Momi (65.5 percent) and Abies (79.3 percent). Species mortality rates in all other sections exceeded 93 percent. Final species mortality ranged from 10.6 percent (A. firma Sieb. et Zucc.) to 100.0 percent (several species). Hierarchical cluster analysis was used to classify species into groups representing six levels of resistance, designated as very resistant (A. firma), resistant (A. pindrow [D.Don] Royle), moderately resistant (four species), intermediate (five species), susceptible (seven species), and very susceptible (17 species). In the species screening trial, Turkish fir (A. bornmuelleriana Mattf.) and closely related Trojan fir (A. equi- trojani Coode et Cullen) ranked third and tenth for resistance, but mortality in these species was relatively high.
    [Show full text]
  • DNA Barcoding of Fungi in the Forest Ecosystem of the Psunj and Papukissn Mountains 1847-6481 in Croatia Eissn 1849-0891
    DNA Barcoding of Fungi in the Forest Ecosystem of the Psunj and PapukISSN Mountains 1847-6481 in Croatia eISSN 1849-0891 OrIGINAL SCIENtIFIC PAPEr DOI: https://doi.org/10.15177/seefor.20-17 DNA barcoding of Fungi in the Forest Ecosystem of the Psunj and Papuk Mountains in Croatia Nevenka Ćelepirović1,*, Sanja Novak Agbaba2, Monika Karija Vlahović3 (1) Croatian Forest Research Institute, Division of Genetics, Forest Tree Breeding and Citation: Ćelepirović N, Novak Agbaba S, Seed Science, Cvjetno naselje 41, HR-10450 Jastrebarsko, Croatia; (2) Croatian Forest Karija Vlahović M, 2020. DNA Barcoding Research Institute, Division of Forest Protection and Game Management, Cvjetno naselje of Fungi in the Forest Ecosystem of the 41, HR-10450 Jastrebarsko; (3) University of Zagreb, School of Medicine, Department of Psunj and Papuk Mountains in Croatia. forensic medicine and criminology, DNA Laboratory, HR-10000 Zagreb, Croatia. South-east Eur for 11(2): early view. https://doi.org/10.15177/seefor.20-17. * Correspondence: e-mail: [email protected] received: 21 Jul 2020; revised: 10 Nov 2020; Accepted: 18 Nov 2020; Published online: 7 Dec 2020 AbStract The saprotrophic, endophytic, and parasitic fungi were detected from the samples collected in the forest of the management unit East Psunj and Papuk Nature Park in Croatia. The disease symptoms, the morphology of fruiting bodies and fungal culture, and DNA barcoding were combined for determining the fungi at the genus or species level. DNA barcoding is a standardized and automated identification of species based on recognition of highly variable DNA sequences. DNA barcoding has a wide application in the diagnostic purpose of fungi in biological specimens.
    [Show full text]
  • Diseases of Trees in the Great Plains
    United States Department of Agriculture Diseases of Trees in the Great Plains Forest Rocky Mountain General Technical Service Research Station Report RMRS-GTR-335 November 2016 Bergdahl, Aaron D.; Hill, Alison, tech. coords. 2016. Diseases of trees in the Great Plains. Gen. Tech. Rep. RMRS-GTR-335. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. 229 p. Abstract Hosts, distribution, symptoms and signs, disease cycle, and management strategies are described for 84 hardwood and 32 conifer diseases in 56 chapters. Color illustrations are provided to aid in accurate diagnosis. A glossary of technical terms and indexes to hosts and pathogens also are included. Keywords: Tree diseases, forest pathology, Great Plains, forest and tree health, windbreaks. Cover photos by: James A. Walla (top left), Laurie J. Stepanek (top right), David Leatherman (middle left), Aaron D. Bergdahl (middle right), James T. Blodgett (bottom left) and Laurie J. Stepanek (bottom right). To learn more about RMRS publications or search our online titles: www.fs.fed.us/rm/publications www.treesearch.fs.fed.us/ Background This technical report provides a guide to assist arborists, landowners, woody plant pest management specialists, foresters, and plant pathologists in the diagnosis and control of tree diseases encountered in the Great Plains. It contains 56 chapters on tree diseases prepared by 27 authors, and emphasizes disease situations as observed in the 10 states of the Great Plains: Colorado, Kansas, Montana, Nebraska, New Mexico, North Dakota, Oklahoma, South Dakota, Texas, and Wyoming. The need for an updated tree disease guide for the Great Plains has been recog- nized for some time and an account of the history of this publication is provided here.
    [Show full text]
  • Pheromone-Based Disruption of Eucosma Sonomana and Rhyacionia Zozana (Lepidoptera: Tortricidae) Using Aerially Applied Microencapsulated Pheromone1
    361 Pheromone-based disruption of Eucosma sonomana and Rhyacionia zozana (Lepidoptera: Tortricidae) using aerially applied microencapsulated pheromone1 Nancy E. Gillette, John D. Stein, Donald R. Owen, Jeffrey N. Webster, and Sylvia R. Mori Abstract: Two aerial applications of microencapsulated pheromone were conducted on five 20.2 ha plots to disrupt western pine shoot borer (Eucosma sonomana Kearfott) and ponderosa pine tip moth (Rhyacionia zozana (Kearfott); Lepidoptera: Tortricidae) orientation to pheromones and oviposition in ponderosa pine plantations in 2002 and 2004. The first application was made at 29.6 g active ingredient (AI)/ha, and the second at 59.3 g AI/ha. Baited sentinel traps were used to assess disruption of orientation by both moth species toward pheromones, and E. sonomana infes- tation levels were tallied from 2001 to 2004. Treatments disrupted orientation by both species for several weeks, with the first lasting 35 days and the second for 75 days. Both applications reduced infestation by E. sonomana,but the lower application rate provided greater absolute reduction, perhaps because prior infestation levels were higher in 2002 than in 2004. Infestations in treated plots were reduced by two-thirds in both years, suggesting that while increas- ing the application rate may prolong disruption, it may not provide greater proportional efficacy in terms of tree pro- tection. The incidence of infestations even in plots with complete disruption suggests that treatments missed some early emerging females or that mated females immigrated into treated plots; thus operational testing should be timed earlier in the season and should comprise much larger plots. In both years, moths emerged earlier than reported pre- viously, indicating that disruption programs should account for warmer climates in timing of applications.
    [Show full text]
  • Genomics of Systemic Induced Defense Responses to Insect Herbivory in Hybrid Poplar
    GENOMICS OF SYSTEMIC INDUCED DEFENSE RESPONSES TO INSECT HERBIVORY IN HYBRID POPLAR by RYAN NICHOLAS PHILIPPE B.Sc. (Hon.), the University of British Columbia, 2003 A THESIS SUBMITTED 1N PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY in THE FACULTY OF GRADUATE STUDIES (Botany) THE UNIVERSITY OF BRITISH COLUMBIA September 2008 © Ryan Nicholas Philippe, 2008 Abstract The availability of a poplar (Populus trichocarpa Torr & A. Gray, bLack cottonwood) genome sequence is enabling new research approaches in angiosperm tree biology. Much of the recent genomics research in popLars has been on wood formation, growth and deveLopment, and abiotic stress tolerance, motivated, at Least in part, by the fact that popLars provide an important system for Large scale, short-rotation pLantation forestry in the Northern Hemisphere. Given their widespread distribution and long lifespan, poplar trees are threatened by a Large variety of insect herbivore pests, and must deal with their attacks with a successfuL defense response. To sustain productivity and ecosystem health of natural and planted poplar forests, it is of critical importance to develop a better understanding of the molecular mechanisms of defense and resistance of poplars against insect pests. Previous research has established a soLid foundation of the chemical ecology of poplar defense against base with Large-scaLe profiling of transcriptome responses of insects. In this study, I buiLd on this popLar trees to insect herbivory. A 15,496-clone cDNA microarray was developed and used to anaLyse transcriptome responses through time to a variety of insect, mechanicaL, and chemicaL eLicitor treatments in treated source leaves, as well as in undamaged systemic source and sink leaves of hybrid poplar (Populus trichocarpa x deltoides).
    [Show full text]
  • Zootaxa, a New Species of Megadineura Malaise (Hymenoptera: Tenthredinidae) and a Key to the Known Species of the Genus
    Zootaxa 1920: 51–60 (2008) ISSN 1175-5326 (print edition) www.mapress.com/zootaxa/ ZOOTAXA Copyright © 2008 · Magnolia Press ISSN 1175-5334 (online edition) A new species of Megadineura Malaise (Hymenoptera: Tenthredinidae) and a key to the known species of the genus MEICAI WEI1 & HAIYAN NIE2 College of Life Science and Technology, Central South University of Forestry and Technology, 498 South Shaoshan Road, Changsha 410004, P. R .China. 1Corresponding author. E-mail: [email protected] 2E-mail:[email protected] Abstract Megadineura leucotarsis Wei, a new species of Nematinae (Hymenoptera, Tenthredinidae) from China is described. The genus Megadineura Malaise, 1931 is redescribed and a key to known species is provided. The difference between Mega- dineura and Mesoneura Hartig, 1837, Renonerva Wei & Nie, 1998, Katsujia Togashi, 1964 is also discussed briefly. The type specimens of the new species are deposited in the Insect Collection of Central South University of Forestry and Technology, China. Key words: Hymenoptera, Tenthredinidae, Nematinae, Megadineura, new species, China Introduction The genus Megadineura was erected by Malaise in 1931 for Dineura grandis André, 1882 from E. Siberia and Japan (Malaise 1931). Megadineura is so rare that only a few publications have referred to it in the past 75 years. The genus can be easily recognized by the large and elongated body, the presence of vein 1r in the forewing (unusual for the subfamily Nematinae), the broad frontal wall, large claw, thick and black antenna with 2 or 3 apical segments white, rugose mesepisternum and the simple sheath. Benson (1963) described a second species of the genus, M. himalayana, from Kashmir.
    [Show full text]
  • Common Misconceptions About Forest Tree Breeding, a Valuable Tool for Addressing Forest Health Issues
    Research Reports COMMON MISCONCEPTIONS ABOUT FOREST TREE BREEDING, A VALUABLE TOOL FOR ADDRESSING FOREST HEALTH ISSUES Jennifer L. Koch USDA Forest Service, Northern Research Station, 359 Main Rd., Delaware, OH 43015 ABSTRACT Breeding programs are an important tool for managing invasive insects and diseases causing high mor- tality rates and even threatening extinction of some of our forest tree species. The emerald ash borer (EAB) invasion of North America, as one example, has resulted in five North American ash species being listed as “critically endangered” on the IUCN red list (IUCNredlist.org). Impacts from such significant losses are far-reaching. Wildlife species that depend on threatened tree species can also be at risk of ex- tinction, Mortality of riparian tree species such as Eastern hemlock, currently under attack by the hem- lock woolly adelgid, can impact water quality. Economic impacts can be far-reaching, and include the costs of removing and replacing trees, and the loss of valuable income sources. This income loss is espe- cially pertinent to rural communities reliant on both traditional – such as lumber, pulp, paper, and fiber and non-traditional forest products – ginseng, morels, and goldenseal. Additionally integral to rural economies are recreational opportunities provided by healthy forests, such as camping, hiking, canoeing, kayaking, hunting and fishing. In Hocking County, Ohio, for example, recreational tourism supports one out of every seven jobs and generates more than 115 million dollars annually (Apsley et al. 2014). Hem- lock trees are cornerstone species in these recreation areas and their loss due to hemlock Wooly Adelgid (HWA) pose a serious threat to local communities.
    [Show full text]
  • Ethiopia: the State of the World's Forest Genetic Resources
    ETHIOPIA This country report is prepared as a contribution to the FAO publication, The Report on the State of the World’s Forest Genetic Resources. The content and the structure are in accordance with the recommendations and guidelines given by FAO in the document Guidelines for Preparation of Country Reports for the State of the World’s Forest Genetic Resources (2010). These guidelines set out recommendations for the objective, scope and structure of the country reports. Countries were requested to consider the current state of knowledge of forest genetic diversity, including: Between and within species diversity List of priority species; their roles and values and importance List of threatened/endangered species Threats, opportunities and challenges for the conservation, use and development of forest genetic resources These reports were submitted to FAO as official government documents. The report is presented on www. fao.org/documents as supportive and contextual information to be used in conjunction with other documentation on world forest genetic resources. The content and the views expressed in this report are the responsibility of the entity submitting the report to FAO. FAO may not be held responsible for the use which may be made of the information contained in this report. THE STATE OF FOREST GENETIC RESOURCES OF ETHIOPIA INSTITUTE OF BIODIVERSITY CONSERVATION (IBC) COUNTRY REPORT SUBMITTED TO FAO ON THE STATE OF FOREST GENETIC RESOURCES OF ETHIOPIA AUGUST 2012 ADDIS ABABA IBC © Institute of Biodiversity Conservation (IBC)
    [Show full text]