scholarly journals Characteristics and diversity of Rhizoctonia spp. population in soil of selected forest bare-root nurseries in Poland

2014 ◽  
Vol 1 (1) ◽  
pp. 279-290 ◽  
Author(s):  
Marta Bełka ◽  
Małgorzata Mańka
Keyword(s):  
Pinus Sylvestris ◽  
Scots Pine ◽  
Damping Off ◽  
Highly Pathogenic ◽  
Anastomosis Groups ◽  
Forest Nurseries ◽  
Bare Root

Fourty three <em>Rhizoctonia</em> isolates obtained from four forest nurseries situated in the Wielkopolska region (central-western Poland) has been proved as multinucleate (anamorph – <em>R. solani</em>). They represented four anastomosis groups (AG): AG1-IC, AG-5, AG4-HG2 and AG2-1. Three AGs were found in Jarocin nursery (AG-5, AG4-HG2 and AG2-1), two in Łopuchówko (AG-5 and AG4-HG2) and one in Konstantynowo (AG1-IC) and Pniewy (AG-5). All isolates were highly pathogenic to Scots pine (<em>Pinus sylvestris</em>) seedlings and pose a large damping-off threat to the seedlings in the nurseries with single AG and in those where more AGs exists.

scholarly journals Four different Phytophthora species that are able to infect Scots pine seedlings in laboratory conditions

2016 ◽  
Vol 58 (3) ◽  
pp. 123-130 ◽  
Author(s):  
Miłosz Tkaczyk ◽  
Katarzyna Sikora ◽  
Justyna A. Nowakowska ◽  
Ewa Aniśko ◽  
Tomasz Oszako ◽  
...  
Keyword(s):  
Scots Pine ◽  
Tissue Damage ◽  
Phytophthora Species ◽  
Control Group ◽  
Phytophthora Cactorum ◽  
Damping Off ◽  
Pine Seedlings ◽  
Forest Nurseries ◽  
Respective Species ◽  
Rule Out

Abstract To investigate susceptibility of young Scots pine seedlings to four Phytophthora species: Phytophthora cactorum, Phytophthora cambivora, Phytophthora plurivora and Phytophthora pini; seven-day-old seedlings of Scots pine (15 seedlings per experiment) were infected using agar plugs of the respective species. Control group also consisted of 15 seedlings and was inoculated with sterile agar plugs. Results unambiguously show that after 4.5 days, all seedlings show clear signs of infection and display severe symptoms of tissue damage and necrosis. Moreover, three and two seedlings in the P. cactorum and P. cambivora infected seedlings groups, respectively, collapsed. The length of largest necrosis measured 13.4±3.90 mm and was caused by P. cactorum. To rule out any putative contamination or infection by secondary pathogens, re-isolations of pathogens from infection sites were performed and were positive in 100% of plated pieces of infected seedlings. All re-isolations were, however, negative in the case of the control group. Detailed microscopic analyses of infected tissues of young seedlings confirmed the presence of numerous Phytophthora species inside and on the surface of infected seedlings. Therefore, our results suggest Phytophthora spp. and mainly P. cactorum and P. cambivora as aggressive pathogens of Scots pine seedlings and highlight a putative involvement of these species in the damping off of young Scots pine seedlings frequently observed in forest nurseries.

scholarly journals The use of molecular genetics diagnostics for phytosanitary inspection of forest nurseries

10.12737/8440 ◽  
2015 ◽  
Vol 4 (4) ◽  
pp. 53-60
Author(s):  
Карпеченко ◽  
Nikita Karpechenko ◽  
Сиволапов ◽  
Vladimir Sivolapov ◽  
Вепринцев ◽  
...  
Keyword(s):  
Pinus Sylvestris ◽  
Molecular Genetics ◽  
Scots Pine ◽  
Practical Application ◽  
Modern Methods ◽  
Different Types ◽  
Forest Nurseries

Сonducted research and practical application of modern methods of molecular genetics diagnostics to de-termine different types and degrees of diseases of seedlings, including difficult to differ in their appear-ance, are examined. Phytosanitary studies have been performed on one-two-year seedlings of Scots pine (Pinus sylvestris L.) and chestnut (Aésculushippo cástanum L.), obtained from six forest nurseries both the Lipetsk and Kursk regions. The degree of different types of pathogens of received seedlings was 30 percent or more.

scholarly journals Biotic relations between Rhizoctonia solani (damping-off pathogen) and soil fungal communities from forest nursery

2002 ◽  
Vol 38 (SI 1 - 6th Conf EFPP 2002) ◽  
pp. 235-238
Author(s):  
S. Stepniewska ◽  
M. Mańka
Keyword(s):  
Pinus Sylvestris ◽  
Rhizoctonia Solani ◽  
Scots Pine ◽  
Soil Fungi ◽  
Considerable Extent ◽  
Fungal Communities ◽  
Forest Nursery ◽  
Damping Off ◽  
Supporting Effect ◽  
Severe Isolate

In forest nursery Wronczyn (central-west Poland) the occurrence of Scots pine (Pinus sylvestris L.) seedlings damping-off<br />caused by Rhizoctonia solani Kühn is connected with a strong supporting effect of soil fungi community on R. solani.<br />Both the soil fungi community isolated in June and in October 1999 supported the pathogen growth to considerable extent.<br />In both months the support was bigger in the case of more severe isolate of the pathogen.

scholarly journals Ectomycorrhizal Fungal Assemblages of Nursery-Grown Scots Pine are Influenced by Age of the Seedlings

Forests ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 134
Author(s):  
Maria Rudawska ◽  
Tomasz Leski
Keyword(s):  
Scots Pine ◽  
Fungal Communities ◽  
Planting Stock ◽  
Suillus Luteus ◽  
Nursery Stock ◽  
Ecm Fungi ◽  
Forest Nurseries ◽  
Bare Root ◽  
Wilcoxina Mikolae ◽  
High Level

Scots pine (Pinus sylvestris L.) is the most widely distributed pine species in Europe and is relevant in terms of planted areas and harvest yields. Therefore, each year the demand for planting stock of Scots pine is exceedingly high, and large quantities of seedlings are produced annually throughout Europe to carry out reforestation and afforestation programs. Abundant and diverse ectomycorrhizal (ECM) symbiosis is critical for the success of seedlings once planted in the field. To improve our knowledge of ECM fungi that inhabit bare-root nursery stock of Scots pine and understand factors that influence their diversity, we studied the assemblages of ECM fungi present across 23 bare-root forest nurseries in Poland. Nursery stock samples were characterized by a high level of ECM colonization (nearly 100%), and a total of 29 ECM fungal taxa were found on 1- and 2-year-old seedlings. The diversity of the ECM community depended substantially on the nursery and age of the seedlings, and species richness varied from 3–10 taxa on 1-year-old seedlings and 6–13 taxa on 2-year-old seedlings. The ECM fungal communities that developed on the studied nursery stock were characterized by the prevalence of Ascomycota over Basidiomycota members on 1-year-old seedlings. All ecological indices (diversity, dominance, and evenness) were significantly affected by age of the seedlings, most likely because dominant ECM morphotypes on 1-year-old seedlings (Wilcoxina mikolae) were replaced by other dominant ones (e.g., Suillus luteus, Rhizopogon roseolus, Thelephora terrestris, Hebeloma crustuliniforme), mostly from Basidiomycota, on 2-year-old seedlings. Across all nurseries, negative correlations were identified for diversity metrics and soil N or C, indicating that mineral and organic fertilization contributes to the differences in the ECM fungal communities in nurseries. We discuss the ecological and practical implications of the composition and diversity of ECM fungi occurring on bare-root planting stock of Scots pine.

scholarly journals Forest litter as the mulch improving growth and ectomycorrhizal diversity of bare-root Scots pine (Pinus sylvestris) seedlings

2015 ◽  
Vol 8 (4) ◽  
pp. 394-400 ◽  
Author(s):  
A Aučina ◽  
M Rudawska ◽  
T Leski ◽  
A Skridaila ◽  
I Pašakinskiene ◽  
...  
Keyword(s):  
Pinus Sylvestris ◽  
Scots Pine ◽  
Forest Litter ◽  
Ectomycorrhizal Diversity ◽  
Bare Root

Overwinter and Spring Storage of Pine and Spruce Seedlings

1981 ◽  
Vol 57 (4) ◽  
pp. 162-164 ◽  
Author(s):  
W. H. Cram ◽  
C. H. Lindquist
Keyword(s):  
Pinus Sylvestris ◽  
Scots Pine ◽  
Early Spring ◽  
Late Spring ◽  
Picea Pungens ◽  
Pine Seedlings ◽  
Survival And Growth ◽  
Bare Root

Several storage treatments at 20 °C and −5 °C were evaluated by late spring transplantings for fall and spring lifted 2-0 seedlings of Pinus sylvestris L. and Picea pungens Engelm. Survival and growth of the 2-2 transplants for both species, after overwinter or early spring storage at 2 °C as bare-root plants in sealed 4-ml poly bags, equalled the performances of freshly-lifted seedlings. Both of these treatments proved practical and efficient alternatives for delayed spring transplantings. Overwinter storage at −5 °C apparently reduced transplant survivals of immature Colorado spruce seedlings and proved lethal for Scots pine seedlings lifted on October 16.

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