Journal
PHYTOTAXA
Volume 555, Issue 2, Pages 147-158Publisher
MAGNOLIA PRESS
DOI: 10.11646/phytotaxa.555.2.3
Keywords
1 new species; Bondarzewia sp; Microdochiaceae; taxonomy
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Funding
- National Natural Science Foundation of China [31870017]
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Microdochium is a genus of important plant pathogens that parasitize economically important crops, causing economic losses. A new species, Microdochium chuxiongense, was discovered and reported from China. Through morphological and molecular evidence, the existence of this species was confirmed, providing important taxonomic data.
Microdochium includes important plant pathogens, parasitic in economically important wheat, barley, rice and corn, caus-ing economic losses. A new species, Microdochium chuxiongense, was isolated from the host Bondarzewia sp. and reported from China. It was characterized by mycelium immersed and superficial and branched. Conidiophores were cylindrical, borne from the hyphae. Conidiogenous cells were sparse, hyaline, solitary, occasionally curved or swollen. Conidia were single or multiple, long oval, shuttle or sickle, straight or curved, and 0(???3)-septate. Chlamydospores were produced directly from mycelium, single, round or palmate. It was well-supported based on morphological characters and molecular evidence (LSU, ITS, tub2 and rpb2), and was a distinct species within the genus Microdochium. This work increases our understand-ing of the distribution and host diversity in this group, and provides important taxonomic data to further explore evolutionary relationships in the species of Microdochium.
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