Infection of the Sunagoke moss panels with fungal pathogens hampers sustainable greening in urban environments

The Science of the Total Environment
Motomu AkitaJari P T Valkonen

Abstract

Drought and heat tolerance of the Sunagoke moss (Racomitrium japonicum) and the low thermal conductivity of the dry moss tissue offer novel greening and insulation possibilities of roofs and walls to mitigate the heat island phenomenon in urban environments. However, damage may appear in the moss panels under humid conditions in Japan. In this study we characterized fungi associated with the damaged areas of the Sunagoke moss panels. Fungi were identified by morphology and internal transcribed spacer (ITS) sequence analysis and tested for pathogenicity on R. japonicum (Grimmiaceae) and an unrelated moss species (Physcomitrella patens; Funariaceae) under controlled conditions. Alternaria alternata, Fusarium avenaceum and Fusarium oxysporum caused severe necrosis and death, whereas Cladosporium oxysporum and Epicoccum nigrum caused milder discoloration or chlorosis in both moss species. The fungi pathogenic on moss were closely related to fungal pathogens described from cultivated vascular plants. Ammonium increased severity of fungal diseases in moss. This study demonstrated that fungi can cause economically significant diseases in cultivated moss and hamper commercial use of the moss panels unless appropriate control methods ar...Continue Reading

References

Sep 22, 2015·International Journal of Molecular Sciences·Guillermo ReboledoInés Ponce de León
Dec 4, 2013·Journal of Proteome Research·Mikko T LehtonenJari P T Valkonen

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Related Concepts

Mosses
Tortella tortuosa
Mycoses
Gametophytes
Necrosis
Alternaria (fungus)
Glycerin
Fusarium oxysporum vasinfectum extract
Skin Test for Alternaria
Hyphae

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