A preliminary examination of the bacterial, archaeal, and fungal rhizosphere microbiome in healthy and Phellinus noxius‐infected trees

Abstract

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The brown root rot fungus Phellinus noxius affects microbial communities in different root‐associated niches of Ficus trees

“…Tseng et al . (2020) also found no significant difference in the bacterial community in the rhizosphere soil of F. microcarpa with or without P. noxius ‐infection (Tsang et al ., 2020). The predominance of P. noxius over other fungi in all BRR‐diseased samples, particularly in the woodiest tissue, ORT, may reflect the competitive advantages of P. noxius due to its high pathogenicity and strong wood‐decay ability (Chang, 1995; Ann et al ., 1999; Sahashi et al ., 2010; Burcham et al ., 2015).…”

“…Ficus trees in Hong Kong and Okinawa are also seriously threatened by BRR (Sahashi et al, 2012;Wang et al, 2016). A recent study by Tsang et al (2020) characterized the microbiomes in the rhizosphere soil of P. noxius-infected F. microcarpa, Celtis sinensis, Mallotus paniculatus, and Cinnamomum camphora (Tsang et al, 2020). Since P. noxius colonizes roots but cannot survive in the soil in the natural environment (Wu et al, 2020), it is important to look into the impact of P. noxius infection on the entire underground root system.…”

Termite–gut-associated actinomycetes as biological control agents against phytopathogen Pyrrhoderma noxium

“…Brown root-rot caused by phytopathogenic white-rot basidiomycete fungus, Pyyrhoderma noxium (P. noxium), formally known as Phellinus noxius 1 is a devastating disease prevalent in many tropical and subtropical countries. 2 It has caused much destruction throughout Southeast and East Asia, Oceania, the Pacific Islands, Africa, Central America, the Caribbean, and Australia. 3 In fact, it has been one of the most damaging tree diseases in Taiwan, 4 the Ryukyu Islands of Japan, 5 Mariana Islands, 6 Malaysia 7 and Australia.…”

“…10 The decomposition of root-tissues leads to significantly reduced physical support and absorption of nutrients and water. 2 Symptoms include discolouration, bark exudations, defoliation, chlorosis, and dieback, however, these symptoms are usually observed in the later stage of infection when it is too late for intervention. 2 Transmission of this disease has two main modes:…”

“…2 Symptoms include discolouration, bark exudations, defoliation, chlorosis, and dieback, however, these symptoms are usually observed in the later stage of infection when it is too late for intervention. 2 Transmission of this disease has two main modes:…”