Endo-type mode of action of (1 → 4)-β-D-glucan cellobiohydrolase from Sclerotium rolfsii

1985 ◽  
Vol 63 (12) ◽  
pp. 1250-1252 ◽  
Author(s):  
Jai C. Sadana ◽  
Rajkumar V. Patil
Keyword(s):  
Mode Of Action ◽  
Sclerotium Rolfsii ◽  
Short Fibres ◽  
Type Mode

Sclerotium (1 → 4)-β-D-glucan cellobiohydrolase has two types of activities: an endo-type mode of action forming insoluble short fibres from native cotton and its endwise action of removing cellobiosyl units from the nonreducing chain ends of β-1,4-glucans.

β-d-glucosidases of Sclerotium rolfsii. Substrate specificity and mode of action

1983 ◽  
Vol 118 ◽  
pp. 205-214 ◽  
Author(s):  
Jai C. Sadana ◽  
Jaiprakash G. Shewale ◽  
Rajkumar V. Patil
Keyword(s):  
Substrate Specificity ◽  
Mode Of Action ◽  
Sclerotium Rolfsii

Turf Tolerance and Virginia Buttonweed (Diodia virginiana) Control with Fluroxypyr as Influenced by the Synergist Diflufenzopyr

2006 ◽  
Vol 20 (2) ◽  
pp. 511-519 ◽  
Author(s):  
Hanwen Ni ◽  
Glenn Wehtje ◽  
Robert H. Walker ◽  
Jason L. Belcher ◽  
Eugene K. Blythe
Keyword(s):  
Mode Of Action ◽  
Warm Season ◽  
Laboratory Research ◽  
Foliar Absorption ◽  
Application Rates ◽  
Type Mode ◽  
Repeated Applications ◽  
Virginia Buttonweed ◽  
High Application ◽  
Diodia Virginiana

Virginia buttonweed control in warm-season turfgrass species requires high application rates and/or repeated applications of herbicides (or both) with an auxin-type mode of action. These treatments often lead to unacceptable turfgrass injury. Diflufenzopyr functions as a synergist with auxin-type herbicides, and it has been suggested that it may do the same when combined with pyridine herbicides such as fluroxypyr. The objective of this field and laboratory research was to determine whether Virginia buttonweed control could be improved with admixtures of fluroxypyr and diflufenzopyr without unacceptable turf injury. Treatments consisted of fluroxypyr applied alone at 140 and 280 g ae/ha, diflufenzopyr alone at 70 and 140 g/ha, and all possible two-way admixtures. Treatments were applied to a hybrid bluegrass ‘Thermal blue’ infested with Virginia buttonweed. Sod of centipedegrass ‘common’, hybrid bermudagrass ‘Tifway’, hybrid zoysiagrass ‘Emerald’, and St. Augustinegrass ‘Raleigh’, which had been previously established in pots, were treated simultaneously and returned to a greenhouse. Fluroxypyr plus diflufenzopyr at 280 and 70 g/ha, respectively, controlled Virginia buttonweed nearly 40% more than fluroxypyr alone. Turfgrass injury was species-dependent, and was generally either equivalent to or less than that obtained with fluroxypyr alone. Radiotracer studies established that, depending upon the turfgrass species, fluroxypyr absorption was either not influenced or reduced by the addition of diflufenzopyr. Neither root nor foliar absorption of fluroxypyr by Virginia buttonweed was influenced by diflufenzopyr. Translocation of foliar-absorbed fluroxypyr was reduced, but translocation of root-absorbed fluroxypyr was increased by diflufenzopyr. The diflufenzopyr-induced synergism may indicate that a significant portion of the applied fluroxypyr was absorbed by roots or by other subsoil tissues, or both.

Effects of 5-5'-Diphenyl-2-thiohydantoin (DPTH) and Thyroxine on the Ultrastructure and Chemical Composition of Rat Liver

1971 ◽  
Vol 29 ◽  
pp. 570-571
Author(s):  
E. A. Elfont ◽  
R. B. Tobin ◽  
D. G. Colton ◽  
M. A. Mehlman
Keyword(s):  
Chemical Composition ◽  
Rat Liver ◽  
Future Study ◽  
Mode Of Action ◽  
Liver Mitochondria ◽  
Rat Liver Mitochondria ◽  
Effective Inhibitor ◽  
Biochemical Effects ◽  
Glycerophosphate Dehydrogenase ◽  
Stimulation Of

Summary5,-5'-diphenyl-2-thiohydantoin (DPTH) is an effective inhibitor of thyroxine (T4) stimulation of α-glycerophosphate dehydrogenase in rat liver mitochondria. Because this finding indicated a possible tool for future study of the mode of action of thyroxine, the ultrastructural and biochemical effects of DPTH and/or thyroxine on rat liver mere investigated.Rats were fed either standard or DPTH (0.06%) diet for 30 days before T4 (250 ug/kg/day) was injected. Injection of T4 occurred daily for 10 days prior to sacrifice. After removal of the liver and kidneys, part of the tissue was frozen at -50°C for later biocheailcal analyses, while the rest was prefixed in buffered 3.5X glutaraldehyde (390 mOs) and post-fixed in buffered 1Z OsO4 (376 mOs). Tissues were embedded in Araldlte 502 and the sections examined in a Zeiss EM 9S.Hepatocytes from hyperthyroid rats (Fig. 2) demonstrated enlarged and more numerous mitochondria than those of controls (Fig. 1). Glycogen was almost totally absent from the cytoplasm of the T4-treated rats.

Mode of action of 6-oxophenolic triterpenoids against Bacillus subtilis

Planta Medica ◽  
2007 ◽  
Vol 73 (09) ◽  
Author(s):  
L Moujir ◽  
L de León ◽  
IL Bazzocchi
Keyword(s):  
Bacillus Subtilis ◽  
Mode Of Action
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