| a mechanism of chlorosis caused by 1,3-dimethyl-4-(2,4-dichlorobenzoyl)-5-hydroxypyrazole, a herbicidal compound. | in organic solvents, 1,3-dimethyl-4-(2,4-dichlorobenzoyl)-5-hydroxypyrazole (dtp) converted chlorophyll a and b extracted from rice seedlings (oryza sativa l. ;kinmaze') into pheophytin a and b, respectively. on comparing the chlorophyll-converting activity of dtp to those of acetic, glycolic, 2,4-dichlorobenzoic, monochloroacetic, 2,6-dichlorobenzoic, pyruvic, and dichloroacetic acids, it was demonstrated that dtp induced h(+) into chlorophyll specifically. 5-hydroxypyrazoles, which seem to be ... | 1979 | 16661052 |
| evaluation of zinc oxide nanoparticle toxicity in sludge products applied to agricultural soil using multispecies soil systems. | to study the environmental impact of nanoparticles, the sludges of wastewater (wwts) and water treatment (wts) plants enriched with zno nanoparticles were added to agricultural soil, and the toxic effects of the nanoparticles were studied using a microcosm system based on the soil. the wwts treated soils were characterised by statistically significant decreases (p<0.05) in vicia sativa germination at the lowest (76.2%) and medium (95.2%) application rates, decreases in the fresh biomass for trit ... | 2014 | 25194764 |
| co-pigmentation of pelargonidin derivatives in strawberry and red radish model solutions by the addition of phenolic fractions from mango peels. | pelargonidin-based colors suffer from notorious instability. a phenolic mango peel extract and defined phenolic fractions thereof were shown to effectively modulate the visible absorption of anthocyanins from strawberry (fragaria x ananassa duch.) and red radish (raphanus sativus l.) by intermolecular co-pigmentation. consistently, non-acylated pelargonidin derivatives from strawberry exerted significantly greater hyper- and bathochromic spectral shifts than their acylated counterparts from red ... | 2016 | 27451227 |
| characterization of cytochalasins from the endophytic xylaria sp. and their biological functions. | bioassay-guided fractionation of the fermentation extract of xylaria sp. xc-16, an endophyte from toona sinensis led to the isolation of two new cytochalasans cytochalasin z27, 1, and cytochalasin z28, 2, along with three known compounds seco-cytochalasin e, 3, and cytochalasin z18, 4, and cytochalasin e, 5. the structures of 1 and 2 were elucidated by spectroscopic and electronic circular dichroism methods. compound 5 was shown to be potently cytotoxic against brine shrimp (lc50 = 2.79 μm), com ... | 2014 | 25350301 |
| effect of flue gas desulfurization residue on plant establishment and soil and leachate quality. | effects on soil quality and crop establishment after incorporation of flue gas desulfurization by-product (fgd) into soil as an amendment was assessed in a mesocosm study. mesocosm units received applications equivalent to 0, 2.5, 5.0, 7.5, and 10% fgd residue [0, 25, 50, 75, and 100 tons acre(-1)]. germination, biomass production, and elemental composition of corn (zea mays l. var. dekalb dk-683), soybean [glycine max (l.) merr. var. haskell pupa 94], radish (raphanus sativus l. var. sparkler), ... | 2013 | 11401255 |
| localization of carbamoylphosphate synthetase and aspartate carbamoyltransferase in chloroplasts. | the localization of carbamoylphosphate synthetase (cpsase) and aspartate carbamoyltransferase (actase), the first two enzymes of the pyrimidine biosynthetic pathway, in chloroplasts was investigated. in dark-grown radish (raphanus sativus) seedlings, light induced a prominent increase in cpsase activity, but had little effect on actase activity. both enzymes were found in chloroplasts isolated from radish cotyledons and leaves of spinach (spinacia oleracea), soybean (glycine max), and corn (zea ... | 1986 | 16664566 |
| determination of the pore size of cell walls of living plant cells. | the limiting diameter of pores in the walls of living plant cells through which molecules can freely pass has been determined by a solute exclusion technique to be 35 to 38 angstroms for hair cells of raphanus sativus roots and fibers of gossypium hirsutum, 38 to 40 angstroms for cultured cells of acer pseudoplatanus, and 45 to 52 angstroms for isolated palisade parenchyma cells of the leaves of xanthium strumarium and commelina communis. these results indicate that molecules with diameters larg ... | 1979 | 17735052 |