FACTOID # 121: Houses in English-speaking countries have the most rooms.
 
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Encyclopedia > Xerotolerant

Xerotolerance is the ability of an organism to survive in environments with very little water. Water activity (aw) is a measure of the amount of water within a substrate that an organism can use to support growth. Xerotolerant organisms can survive in environments with water activity below 0.8. Endoliths and halophiles are xerotolerant.


  Results from FactBites:
 
Ecology (699 words)
Orbiliomycetes occur on most of the dead branches of a tree from near the base up to the highest parts of the canopy.
Xerotolerant species are not restricted to areas of low annual precipitation, they occur in nearly every plant community all over the world.
Xerotolerant ascomycetes inhabit most kinds of exposed organic matter which rapidly dries down after rainy weather.
GLOBAL VOICES OF SCIENCE: Protector of the Seeds: Seminal Reflections from Southern Africa -- Berjak 307 (5706): 47 -- ... (2549 words)
Working with maize, we showed that individual fungal species, which continue to be metabolically active under storage conditions of high relative humidity, replace each other in a process of succession, all the while causing increasing damage within the seeds.
We also established that xerotolerant fungi can be transmitted asymptomatically through the growing maize plant, even infecting the next seed generation.
Of practical importance in rural Africa was the demonstration that thermotherapy--pre-storage immersion of maize grains for short periods in hot water--can substantially reduce fungal loads in maize seeds.
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