Metarhizium majus
Metarhizium majus[1] is the name given to a group of fungal isolates that are known to be virulent against Scarabaeidae, a family of beetles. Previously, this species has had variety status in Metarhizium anisopliae (var. majus) and its name is derived from characteristically very large spores (typically 2.5–4 µm x 10–14 µm long) for the genus Metarhizium. There has been considerable interest in developing isolates of this species into mycoinsecticides: especially for coconut and oil palm beetle pests in SE Asia, the Pacific region and Africa.
- Metarhizium majus infected Oryctes rhinoceros larva with hyphal (whitish colour) and conidia sporulation/geminating (greenish colour) from its cuticle.
- Stages of Oryctes rhinoceros larva infected with M. majus. From left to right, 1st column: Infection symptom with "black dotes" or necrotic spots on integument; 2nd: Mummified; Mycelium (whitish colour) grow on integument; 3rd: Conidia (greenish colour) grow on integument; 4th: Decomposed grubs.
Metarhizium majus | |
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Remains of Oryctes rhinoceros adult infected with M. majus: Dipolog, Mindanao, Philippines (1977) | |
Scientific classification | |
Kingdom: | Fungi |
Division: | Ascomycota |
Class: | Sordariomycetes |
Order: | Hypocreales |
Family: | Clavicipitaceae |
Genus: | Metarhizium |
Species: | M. majus |
Binomial name | |
Metarhizium majus (J.R.Johnst.) J.F.Bisch., Rehner & Humber (2009) | |
Synonyms | |
Metarhizium anisopliae var. majus |
It is an anamorph, its telomorphic form is Cordyceps brittlebankisoides.[2]
Important isolates
- The epitype is isolate ARSEF 1914: derived from a dried US National Fungus Collection culture (BPI 878297)[1].
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gollark: To save you from problems they're withheld until I can recalculate safe ones.
gollark: My guesses accidentally contained a proof of the inconsistency of arithmetic.
gollark: No, it's because I'm everyone's alt and I have an IQ of 205 octillion.
gollark: None are safe, broadly speaking.
References
- Bischoff J.F., Rehner S.A. and Humber R.A. (2009). "A multilocus phylogeny of the Metarhizium anisopliae lineage". Mycologia. 101 (4): 512–530. doi:10.3852/07-202. PMID 19623931.
- Liu, Z.; et al. (2002). "Molecular evidence for teleomorph-anamorph connections in Cordyceps based on ITS-5.8S rDNA sequences". Mycological Research. 106 (9): 1100–1108. doi:10.1017/S0953756202006378.
External links
Media related to Metarhizium at Wikimedia Commons
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