Monographella Albescens
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''Monographella albescens'' is a
fungal A fungus ( : fungi or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as a kingdom, separately from th ...
plant pathogen Plant pathology (also phytopathology) is the scientific study of diseases in plants caused by pathogens (infectious organisms) and environmental conditions (physiological factors). Organisms that cause infectious disease include fungi, oomyc ...
also known as leaf scald which infects
rice Rice is the seed of the grass species ''Oryza sativa'' (Asian rice) or less commonly ''Oryza glaberrima ''Oryza glaberrima'', commonly known as African rice, is one of the two domesticated rice species. It was first domesticated and grown i ...
.


Transmission

Conidia are transferred by water splash.


Host resistance

Lines Line most often refers to: * Line (geometry), object with zero thickness and curvature that stretches to infinity * Telephone line, a single-user circuit on a telephone communication system Line, lines, The Line, or LINE may also refer to: Arts ...
of rice that are resistant against ''M. albescens'' are available. Most
resistance breeding Disease resistance breeding is the process of selective breeding to produce or improve disease resistance. It is also used more generally for breeding for disease tolerance. Types include: * Plant breeding for disease resistance :* * Other exampl ...
has been in field trials in countries where the disease is already widespread. Even in "resistant" strains, however, there is some noticeable
lesion A lesion is any damage or abnormal change in the tissue of an organism, usually caused by disease or trauma. ''Lesion'' is derived from the Latin "injury". Lesions may occur in plants as well as animals. Types There is no designated classifi ...
ing but little to no loss of yield. The mechanism of resistance remains unknown. There is wide variation in pathogen strain-host strain pathogenicity. Rice plants fed increased
silicon Silicon is a chemical element with the symbol Si and atomic number 14. It is a hard, brittle crystalline solid with a blue-grey metallic luster, and is a tetravalent metalloid and semiconductor. It is a member of group 14 in the periodic tab ...
showed increased
resistance Resistance may refer to: Arts, entertainment, and media Comics * Either of two similarly named but otherwise unrelated comic book series, both published by Wildstorm: ** ''Resistance'' (comics), based on the video game of the same title ** ''T ...
to ''M. albescens''. Surprisingly this is not - or not entirely - due to its structural role but also due to increased production of various compounds and
enzyme Enzymes () are proteins that act as biological catalysts by accelerating chemical reactions. The molecules upon which enzymes may act are called substrates, and the enzyme converts the substrates into different molecules known as products. A ...
s.


References


External links


Index Fungorum

USDA ARS Fungal Database
* Fungal plant pathogens and diseases Xylariales Fungi described in 1889 Fungus species {{plant-disease-stub