BACKGROUND Acetic acid, released during hydrolysis of lignocellulosic feedstocks for second generation bioethanol production, inhibits yeast growth and alcoholic fermentation. Yeast biomass generated in a propagation step that precedes ethanol production should therefore express a high and constitutive level of acetic acid tolerance before introduction into lignocellulosic hydrolysates. However...

The paper aimed to study the influence of naphthalene acetic acid (NAA) and ethephon on total phenols, flavonoids and tannins as a function of seasonality in Echinodorus grandiflorus plants. The experiment used adventitious plantlets from the flower stem with 4 to 5 leaves, planted in 10-liter pots. The leaf spray treatments applied were: control, NAA 100 mg L -1 , and ethephon 100 mg L -1 . Tr...

A new metabolite of the plant growth substance indole-3-acetic acid has been extracted from Zea mays seedlings and characterized as the 7'-O-beta-D-glucopyranoside of 7-hydroxy-2-oxindole-3-acetic acid. This compound was the major product formed from [5-3H] 2-oxindole-3-acetic acid, incubated with intact plants or root and coleoptile sections. Identification was by gas chromatography-mass spect...

Farmers have been growing marigold commercially but they are still lacking knowledge on procedure of postharvest handling flowers. This has created a huge problem for those farmers since cannot store their own produce longer period time thus facing problems in marketing. In order to inform the with best means preservation cut flowers so that could fetch good market price product. A lab experime...

The effect of various concentrations of thidiazuron (TDZ) with or without 2.7 μM of α-naphthalene acetic acid (NAA) on adventitious shoot formation of two Petunia hybrida cultivars was studied. Seeds from ‘Daddy Blue’ and ‘Dreams White’ cultivars were germinated in vitro. Expanded leaves from both seedlings and regenerated shoots were taken as explants. Explants were placed on MS media supplied...

In the reaction of naphthalene-2,3-diol and 4-amino-anti-pyrine in the presence of acetic acid, the amine function is acetyl-ated and the resulting acetamide co-crystallizes with the diol in the title compound, C(13)H(15)N(3)O(2)·C(10)H(8)O(2), with 1:1 molar stoichiometry. The two components are linked by two O-H⋯O=C hydrogen bonds. One of the hy-droxy groups inter-acts with the pyrazolone car...

The title compound, [Cs(CH3COO)(C28H16O8)(C2H5OH)]·C2H5OH, is the product of the complexation between one vasarene analogue [1], bis ninhydrin naphthalene-1,3-diol and CsF, where the F(-) ion has reacted with residual acetic acid (AcOH), to form a [1]·CsOAc complex. The inter-molecular inter-actions with the multiple oxygen-containing functional groups of the ligand, as well as O-H⋯O hydrogen b...

Single cells were isolated mechanically from the mesophyll of adult plants and of seedlings of Zinnia elegans L. cv. Canary bird. When single cells isolated from the first leaves of seedlings were cultured in a liquid medium in the dark with rotation, they differentiated to tracheary elements with a reasonable degree of synchrony in the 24-hour period between days 2 and 3 after culture. The pro...

An efficient in vitro propagation system for an elite clone EC-353508 of Artemisia annua L., an important antimalarial drug plant has been developed. The best organogenic response, including adventitious multiple shoots and their elongation, was obtained when nodal explants were cultured on MS medium supplemented with 10μM 2-isopentenyl adenine (2iP). An average of 17.7±0.88 shoots with an aver...