scholarly journals Inoculation of Loblolly Pine Seedlings at Planting with Basidiospores of Ectomycorrhizal Fungi in Chip Form

1984 ◽  
Author(s):  
Peter R. Beckjord ◽  
Marla S. McIntosh ◽  
Edward Hacskaylo ◽  
John H. Jr. Melhuish ◽  
John H. Jr. Melhuish
Keyword(s):  
Ectomycorrhizal Fungi ◽  
Loblolly Pine ◽  
Pine Seedlings

scholarly journals Ectomycorrhizal Fungi Associated with Pinus densiflora Seedlings under Flooding Stress

2021 ◽  
Vol 13 (8) ◽  
pp. 4367
Author(s):  
Yoonhee Cho ◽  
Shinnam Yoo ◽  
Myung Soo Park ◽  
Ji Seon Kim ◽  
Chang Sun Kim ◽  
...  
Keyword(s):  
Ectomycorrhizal Fungi ◽  
Internal Transcribed Spacer ◽  
Pinus Densiflora ◽  
Red Pine ◽  
Fungal Communities ◽  
Thelephora Terrestris ◽  
Suillus Luteus ◽  
Flooding Stress ◽  
Pine Seedlings ◽  
Rhizopogon Luteolus

Flooding is an environmental stress for plants that not only limits aeration and nutrient acquisition, but also disturbs underground plant-associated fungal communities. Despite frequent flooding, red pine (Pinus densiflora) seedlings thrive in streamside environments. However, whether the compatible ectomycorrhizal fungi (EMF) of red pine are affected by natural flooding is unclear. As EMF are vital symbionts for the development of many trees and allow them to overcome various environmental stresses, in this study, the EMF species associated with red pine seedlings in a streamside environment in Korea were investigated after flooding. The EMF species in 47 seedlings collected from the streamside site were identified by observing their different morphotypes using internal transcribed spacer sequence analysis, and a total of 10 EMF species were identified. The EMF species diversity was lower than that in samples collected from a nearby forest analyzed as a control. The dominant EMF species of streamside seedlings included Amphinema spp., Rhizopogon luteolus, Suillus luteus, and Thelephora terrestris. This study could serve as a basis for investigating the mechanisms by which advantageous EMF aid plant development under flooding stress.

Distributions and Compositions of Brominated Diphenyl Ethers-209 in Pine Seedlings Inoculated with Ectomycorrhizal Fungi

2019 ◽  
Vol 230 (12) ◽  
Author(s):  
Zhugui Wen ◽  
Mengyu Chen ◽  
Huilong Lu ◽  
Shiqi Huang ◽  
Jincheng Xing ◽  
...  
Keyword(s):  
Ectomycorrhizal Fungi ◽  
Brominated Diphenyl Ethers ◽  
Pine Seedlings ◽  
Diphenyl Ethers

scholarly journals Ectomycorrhizal fungi mediate indirect effects of a bark beetle outbreak on secondary chemistry and establishment of pine seedlings

2015 ◽  
Vol 208 (3) ◽  
pp. 904-914 ◽  
Author(s):  
Justine Karst ◽  
Nadir Erbilgin ◽  
Gregory J. Pec ◽  
Paul W. Cigan ◽  
Ahmed Najar ◽  
...  
Keyword(s):  
Bark Beetle ◽  
Ectomycorrhizal Fungi ◽  
Indirect Effects ◽  
Secondary Chemistry ◽  
Pine Seedlings

Growth and gas exchange of loblolly pine seedlings as influenced by drought and air pollutants

1990 ◽  
Vol 51 (1-2) ◽  
pp. 105-116 ◽  
Author(s):  
Woong S. Lee ◽  
Boris I. Chevone ◽  
John R. Seiler
Keyword(s):  
Gas Exchange ◽  
Loblolly Pine ◽  
Air Pollutants ◽  
Pine Seedlings

scholarly journals The Association of a Longidorus Species with Stunting and Root Damage of Loblolly Pine (Pinus taeda L.) Seedlings

Plant Disease ◽  
2002 ◽  
Vol 86 (7) ◽  
pp. 803-807 ◽  
Author(s):  
Stephen W. Fraedrich ◽  
Michelle M. Cram
Keyword(s):  
Pinus Taeda ◽  
Loblolly Pine ◽  
Dry Weight ◽  
Forest Tree ◽  
Root Weight ◽  
Extraction Techniques ◽  
Seedling Root ◽  
Pine Seedlings ◽  
Proper Diagnosis ◽  
Pinus Taeda L

A Longidorus species was consistently associated with patches of stunted and chlorotic loblolly pine seedlings at a forest-tree nursery in Georgia. Seedlings from affected areas had poorly developed root systems that lacked lateral and feeder roots. Longidorus population densities in composite soil samples from the margins of patches ranged from 9 to 67 nematodes per 100 cm3 of soil. In a growth chamber experiment, seedling root dry weight decreased with respect to the initial Longidorus dose as well as the final Longidorus populations in containers. The dry root weight of seedlings were 0.117, 0.090, 0.066, and 0.065 g in containers initially infested with 0, 50, 100, and 200 Longidorus, respectively. Lateral and fine roots were lacking on seedlings at the highest doses. Populations of Longidorus increased in all containers during the experiment. Damage to loblolly pine seedlings caused by Longidorus is a previously undescribed problem in southern pine nurseries. Proper diagnosis of the problem by nematode testing laboratories may require the use of extraction techniques specific for larger nematodes such as Longidorus.

scholarly journals Fungicides Improve Field Performance of Stored Loblolly and Longleaf Pine Seedlings

1996 ◽  
Vol 20 (1) ◽  
pp. 5-9 ◽  
Author(s):  
John C. Brissette ◽  
James P. Barnett ◽  
John P. Jones
Keyword(s):  
Loblolly Pine ◽  
Cold Storage ◽  
Untreated Control ◽  
Longleaf Pine ◽  
Field Performance ◽  
Storage Duration ◽  
Fungicide Application ◽  
Total Height ◽  
Pine Seedlings

Abstract Seedlings of loblolly and longleaf pine lifted in December, January, and February were treated with either benomyl or ridomil before cold storage. Along with an untreated control, they were planted after cold storage of less than 1 wk, 3 wk, and 6 wk. Survival was measured in mid-June after planting, and after 1 and 4 yr in the field. Total height was measured after 4 yr. The fungicide application increased survival of both species lifted in December or February and was beneficial to longleaf pine seedlings regardless of storage duration. Fungicide-treated longleaf pine seedlings had greater mean 4 yr height than the controls, but fungicides did not affect the height of loblolly pine. South. J. Appl. For. 20(1): 5-9.

Influence of Tylenchorhynchus ewingi on growth of loblolly pine seedlings, and host suitability of legumes and small grains

Nematology ◽  
2012 ◽  
Vol 14 (4) ◽  
pp. 417-425 ◽  
Author(s):  
Stephen W. Fraedrich ◽  
Michelle M. Cram ◽  
Zafar A. Handoo ◽  
Stanley J. Zarnoch
Keyword(s):  
Pearl Millet ◽  
Loblolly Pine ◽  
Cover Crops ◽  
Root Systems ◽  
Forest Tree ◽  
Initial Population ◽  
Severe Damage ◽  
Pine Seedlings ◽  
Small Grains ◽  
Production Losses

Tylenchorhynchus ewingi, a stunt nematode, causes severe injury to slash pine seedlings and has been recently associated with stunting and chlorosis of loblolly pine seedlings at some forest tree nurseries in southern USA. Experiments confirmed that loblolly pine is a host for T. ewingi, and that the nematode is capable of causing severe damage to root systems. Initial population densities as low as 60 nematodes (100 cm3 soil)−1 were sufficient to damage the root systems of loblolly pine seedlings. Populations of T. ewingi increased on pine from two- to 16-fold, depending on the initial population density. Evaluations of various cover crops used in southern forest tree nurseries indicated that legumes, rye and several varieties of sorghum were excellent hosts for T. ewingi. Other small grains such as ryegrass, oats and wheat were poorer hosts. A cultivar of pearl millet was a non-host for T. ewingi, and a cultivar of brown top millet appeared to be either a very poor host or a non-host. Nurseries that have seedling production losses caused by T. ewingi should consider rotating with non-host cover crops such as pearl millet or leaving fields fallow as part of their pest management programme.

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