• The Korean Journal of Physiology
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• v.2 no.1
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• pp.73-78
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• 1968

The changes of urinary excretion after alcohol drinking on 6 normal subjects sweated in a hot chamber were studied. The results are summarized as follows: 1. The urinary minute flow is increased rapidly to maximum about 60 minutes after intake of alcohol, and this is supposed to be originated from the antidiuretic suppressive action on osmoreceptor by ethyl alcohol. 2. Free water clearance and osmolarity of the urine showed the maximal and minimal values respectively at the sane time when the urinary flow is maximal. 3. The concentrations of Na, K and Cl were roughly proportionate to the urinary osmolarity and the minimal values after drinking were diluted to more than 10-fold than those before drinking, but the minute amounts of these ions is decreased only slightly during tile diuresis. 4. The concentrations of urea were decreased less than 10-fold but the minute amounts were rather increased slightly. 5. The diuresis could not excrete whole quantity of fluid intake in the period of 2 hours, and considerable amount of water was still retained in the body.

• Mycobiology
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• v.49 no.4
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• pp.396-405
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• 2021

Cinnamomum migao plants often face different degrees of drought in karst habitats, which can lead to plants' death, especially in the seedling stage. Widespread of arbuscular mycorrhizal (AM) fungi in karst soils have the potential to address this drought, which is a threat to C. migao seedlings. We inoculated C. migao seedlings with spores from Glomus lamellosum and Glomus etunicatum, two AM fungi widely distributed in karst soils, to observe seedling growth response after simulated drought. Our results showed that 40 g of G. lamellosum and G. etunicatum significantly promoted the growth of C. migao seedlings, 120 days after inoculation. Following a 15-day drought treatment, root colonization of the seedlings with G. lamellosum or G. etunicatum had lower the accumulation of malondialdehyde (MDA) and increased the accumulation of enzymes and osmotic substances in the seedlings. The relative water content in different organs (roots, stems, and leaves) of the drought-stressed seedlings was higher in plants with G. lamellosum or G. etunicatum than in plants without AM fungi colonization. Our results showed that inoculation with AM fungi was an effective means to improve the drought resistance of C. migao seedlings.