Monographella albescens

Monographella albescens is a fungal plant pathogen[1] also known as leaf scald[1] which infects rice.[1]

Monographella albescens
Scientific classification
Kingdom:
Fungi
Phylum:
Ascomycota
Class:
Sordariomycetes
Subclass:
Xylariomycetidae
Order:
Xylariales
Family:
Incertae sedis
Genus:
Monographella
Species:
M. albescens
Binomial name
Monographella albescens
(Thüm.) V.O. Parkinson, Sivan. & C. Booth, (1981)
Synonyms

Gerlachia oryzae (Hashioka & Yokogi) W. Gams, (1980)
Griphosphaerella albescens (Thüm.) Arx, (1981)
Metasphaeria albescens Thüm., (1889)
Metasphaeria oryzae-sativae Hara, (1918)
Microdochium oryzae (Hashioka & Yokogi) Samuels & I.C. Hallett, (1983)
Micronectriella pavgii R.A. Singh, (1978)
Rhynchosporium oryzae Hashioka & Yokogi, (1955)

Transmission

Conidia are transferred by water splash.[2]

Host resistance

Lines of rice that are resistant against M. albescens are available.[2] Most resistance breeding has been in field trials in countries where the disease is already widespread.[2] Even in "resistant" strains, however, there is some noticeable lesioning but little to no loss of yield.[2] The mechanism of resistance remains unknown.[2] There is wide variation in pathogen strain-host strain pathogenicity.[2]

Rice plants fed increased silicon showed increased resistance to M. albescens.[1] Surprisingly this is not - or not entirely - due to its structural role but also due to increased production of various compounds and enzymes.[1]

References
  1. Tatagiba, Sandro D.; Rodrigues, Fabrício A.; Filippi, Marta Cristina C.; Silva, Gisele B.; Silva, Leandro C. (2014-02-07). "Physiological Responses of Rice Plants Supplied with Silicon toMonographella albescensInfection". Journal of Phytopathology. Wiley. 162 (9): 596–606. doi:10.1111/jph.12231. ISSN 0931-1785.
  2. Turner, H. C.; Black, R. (2001). "Rice Leaf Scald: Pathogen Biology and Diversity". Major Fungal Diseases of Rice. Dordrecht: Springer Netherlands. pp. 307–319. doi:10.1007/978-94-017-2157-8_22. ISBN 978-90-481-5835-5.


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