Differences between stem and root thickening at their junction in red pine

Author(s):  
D. C. F. Fayle
Keyword(s):  



2021 ◽  
Vol 13 (8) ◽  
pp. 4367
Author(s):  
Yoonhee Cho ◽  
Shinnam Yoo ◽  
Myung Soo Park ◽  
Ji Seon Kim ◽  
Chang Sun Kim ◽  
...  

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.



Ecosphere ◽  
2019 ◽  
Vol 10 (12) ◽  
Author(s):  
Joseph M. Marschall ◽  
Michael C. Stambaugh ◽  
Benjamin C. Jones ◽  
Erin Abadir
Keyword(s):  


1975 ◽  
Vol 5 (1) ◽  
pp. 109-121 ◽  
Author(s):  
D. C. F. Fayle

Extension of the root system and stem during the first 30 years of growth of plantation-grown red pine (Pinusresinosa Ait.) on four sites was deduced by root and stem analyses. Maximum rooting depth was reached in the first decade and maximum horizontal extension of roots was virtually complete between years 15 and 20. The main horizontal roots of red pine seldom exceed 11 m in length. Elongation of vertical and horizontal roots was examined in relation to moisture availability and some physical soil conditions. The changing relations within the tree in lineal dimensions and annual elongation of the roots and stem are illustrated. The development of intertree competition above and below ground is considered.



Weeds ◽  
1967 ◽  
Vol 15 (4) ◽  
pp. 339 ◽  
Author(s):  
P. S. Dhillon ◽  
W. R. Byrnes ◽  
C. Merritt
Keyword(s):  
Red Pine ◽  


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