Sammanfattning

Ectomycorrhizal exploration types are commonly assumed to denote spatial foraging patterns and resource-related niches of extraradical mycelia. However, empirical evidence of the consistency of foraging strategies within exploration types is lacking. Here, we analysed ectomycorrhizal foraging patterns by incubating root-excluding ingrowth mesh bags filled with six different substrates in mature Picea abies forests. High-throughput sequencing was used to characterise ectomycorrhizal fungal communities in the mesh bags and on adjacent fine roots after one growing season. Contrary to expectations, many ectomycorrhizal genera of exploration types that are thought to produce little extraradical mycelium colonised ingrowth bags extensively, whereas genera commonly associated with ample mycelial production occurred sparsely in ingrowth bags relative to their abundance on roots. Previous assumptions about soil foraging patterns of exploration types do not seem to hold. Instead, we propose that variation in the proliferation of extraradical mycelium is related to intergeneric differences in mycelial longevity and the mobility of targeted resources.

Nyckelord

boreal forest; cafeteria experiment; ectomycorrhizal exploration types; fungal networks; nutrient foraging; soil fungi

Publicerad i

New Phytologist
2023, Volym: 237, nummer: 2, sidor: 576-584

SLU författare

• Jörgensen, Karolina

  • Institutionen för mark och miljö, Sveriges lantbruksuniversitet
    
  • Universitetet i Bergen

• Clemmensen, Karina

  • Institutionen för skoglig mykologi och växtpatologi, Sveriges lantbruksuniversitet
    

• Lindahl, Björn

  • Institutionen för mark och miljö, Sveriges lantbruksuniversitet
    

Globala målen

SDG15 Skydda, återställa och främja ett hållbart nyttjande av landbaserade ekosystem, hållbart bruka skogar, bekämpa ökenspridning, hejda och vrida tillbaka markförstöringen samt hejda förlusten av biologisk mångfald


UKÄ forskningsämne

Skogsvetenskap
Markvetenskap


Publikationens identifierare

DOI: https://doi.org/10.1111/nph.18566

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/120377