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In vitro evidence of root colonization suggests ecological versatility in the genus Mycena

Thoen, Ella and Harder, Christoffer Bugge and Kauserud, Havard and Botnen, Synnove S. and Vik, Unni and Taylor, Andy F. S. and Menkis, Audrius and Skrede, Inger (2020). In vitro evidence of root colonization suggests ecological versatility in the genus Mycena. New Phytologist. 227 , 601-612
[Journal article]

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Abstract

The root-associated habit has evolved on numerous occasions in different fungal lineages, suggesting a strong evolutionary pressure for saprotrophic fungi to switch to symbiotic associations with plants. Species within the ubiquitous, saprotrophic genus Mycena are frequently major components in molecular studies of root-associated fungal communities, suggesting that an evaluation of their trophic status is warranted. Here, we report on interactions between a range of Mycena species and the plant Betula pendula.In all, 17 Mycena species were inoculated onto B. pendula seedlings. Physical interactions between hyphae and fine roots were examined using differential staining and fluorescence microscopy. Physiological interactions were investigated using C-14 and P-32 to show potential transfer between symbionts.All Mycena species associated closely with fine roots, showing hyphal penetration into the roots, which in some cases were intracellular. Seven species formed mantle-like structures around root tips, but none formed a Hartig net. Mycena pura and Mycena galopus both enhanced seedling growth, with M. pura showing significant transfer of P-32 to the seedlings.Our results support the view that several Mycena species can associate closely with plant roots and some may potentially occupy a transitional state between saprotrophy and biotrophy.

Authors/Creators:Thoen, Ella and Harder, Christoffer Bugge and Kauserud, Havard and Botnen, Synnove S. and Vik, Unni and Taylor, Andy F. S. and Menkis, Audrius and Skrede, Inger
Title:In vitro evidence of root colonization suggests ecological versatility in the genus Mycena
Year of publishing :2020
Volume:227
Page range:601-612
Number of Pages:12
Publisher:New Phytologist Trust
ISSN:0028-646X
Language:English
Publication Type:Journal article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution-Noncommercial 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Botany
Keywords:biotrophy-saprotrophy continuum, ecological niches, functional diversity, Mycena, root-associations
URN:NBN:urn:nbn:se:slu:epsilon-p-105368
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-105368
Additional ID:
Type of IDID
DOI10.1111/nph.16545
Web of Science (WoS)000525970500001
ID Code:17234
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Forest Mycology and Plant Pathology
(S) > Dept. of Forest Mycology and Plant Pathology
Deposited By: SLUpub Connector
Deposited On:10 Jul 2020 09:59
Metadata Last Modified:23 Aug 2020 20:42

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