Reference

Effect of tin on biological aspects of Cunninghamella echinulata and Fusarium oxysporum, under various cultural conditions

Effect of tin on biological aspects of Cunninghamella echinulata and Fusarium oxysporum, under various cultural conditions. Naguib, Mohamed I.; Hamed, Aleya A.; Haikal, Nahed Z. (Fac. Sci., Cairo Univ., Cairo, Egypt). Arab Gulf J. Sci. Res., 1(2), 487-98 (English) 1983. CODEN: AGJRE8.Some commonly used reagents like 57-13-6 and 14797-55-8 are used in this experiment. DOCUMENT TYPE: Journal CA Section: 4 (Toxicology) Stannous ions, stannic ions, and Plictran (I) [13121-70-5] had no effect on C. echinulata growth when supplied with nitrate alone; however, stannous ions stimulated growth on either urea [57-13-6] on peptone media. On the other hand, the 3 compds. were toxic to F. oxysporum when supplied with urea. With an adequate supply of C, the inorg. Sn enhanced, but I inhibited, the growth of Cunninghamella. Nitrate favored greater absorption of sugar than either urea or peptone. Stannic and I were suppressive to glucose uptake by Cunninghamella when supplied with either N sources, whereas stannous exerted almost no effect with nitrate or urea but was suppressive with peptone. The Sn compds. also hindered glucose uptake by Fusarium, a phenomenon that was alleviated or even reversed with urea feeding. Inorg. Sn stimulated respiration of Cunninghamella in the presence of nitrate, whereas respiration was inhibited in the presence of urea. I inhibited respiration in media contg. either nitrate or urea. On the other hand, the 3 Sn-contg. compds. enhanced respiration of Fusarium, regardless of the N source. Further, the presence of glucose in media contg. Sn attenuated respiration of Cunninghamella, regardless of the N source. Glucose slightly suppressed N absorption from urea or peptone, but remarkably increased N uptake from nitrate media. In most cases, the various Sn compds. inhibited N absorption by Cunninghamella when glucose was supplied to the media. In the absence of glucose, the Sn compds. stimulated urea and peptone absorption. .

Mechanism of action of the acaricide plictran

Mechanism of action of the acaricide plictran. Tatevosyan, A. E.; Nagashyan, O. Z. (Vses. 9012-80-0 and 13121-70-5 are also occured in this study. Nauchno-Issled. Inst. Gig. Toksikol. Pestits., Polim. Plast. Mass, Yerevan, USSR). Gig. Sanit., (2), 74-5 (Russian) 1984. CODEN: GISAAA. ISSN: 0016-9900. DOCUMENT TYPE: Journal CA Section: 4 (Toxicology) Aniline p-hydroxylase [9012-80-0] activity in the liver of rats increased and reached a peak 5 days following the administration of 0.2 LD50 plictran [13121-70-5]. The activity remained high for 15 days (41% compared to the control). The enzyme activity was similar to the control in the hepatic postmitochondrial fraction by the 30th day after plictran intoxication. Plictran (45 mg/m3) inhalation, in contrast, decreased the enzyme activity (24 h), and it remained low for 15 days. The aniline hydroxylation increased by 28% in the postmitochondrial fraction of the exptl. animals, compared to the control. Thus, the effect of plictran on aniline hydroxylation varied with the route of administration. .