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1 butanol/nicotiana

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To develop a new antiviral preparation from a microbial source, the halophilic bacterium Bacillus pumilus E303035 was isolated from a soil sample collected at Qarhan Salt Lake in Qinghai, China. The inhibitory activity of an ethyl acetate extract of its fermentation broth was higher than that of an

Involvement of phospholipases C and D in the defence responses of riboflavin-treated tobacco cells.

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Ielogoties Reģistrēties
Riboflavin is an activator of defence responses in plants that increases resistance against diseases caused by fungal, oomycete, bacterial and viral pathogens. However, the mechanisms driving defence activation by riboflavin are poorly understood. We investigated the signal transduction pathways of
Tobacco-specific N-nitrosamines (TSNA) are formed from nicotine and the minor Nicotiana tabacum alkaloids during tobacco processing and tobacco smoking. The TSNA are the most abundant strong carcinogens in smokeless tobacco and in smoke. In this comparative study six TSNA and two major volatile
In a previous structure-activity analysis of chlorophenol and nitrophenol toxicity, the pollen tube growth test was shown to discriminate between oxidative uncoupling and narcotic mechanisms of action. To examine the suitability of the use of pollen tubes in screening for narcotic chemicals, we used

Thin-layer chromatography of auxin and inhibitors in Nicotiana glauca, N. langsdorffii and three of their tumor-forming hybrids.

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Auxin and auxin-inhibitors from acidic ether extracts of normal Nicotiana stem tissues of N. glauca and N. langsdorffii and their tumor-producing 4n, 3n, and 2n-hybrids were separated by thin-layer chromatography. The growth substances were eluted and subjected to an Avena curvature test. A

Osmotically induced cell swelling versus cell shrinking elicits specific changes in phospholipid signals in tobacco pollen tubes.

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Ielogoties Reģistrēties
Pollen tube cell volume changes rapidly in response to perturbation of the extracellular osmotic potential. This report shows that specific phospholipid signals are differentially stimulated or attenuated during osmotic perturbations. Hypo-osmotic stress induces rapid increases in phosphatidic acid

Smells from the desert: Microbial volatiles that affect plant growth and development of native and non-native plant species.

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Ielogoties Reģistrēties
The plant microbiota can affect host fitness via the emission of microbial volatile organic compounds (mVOCs) that influence growth and development. However, evidence of these molecules and their effects in plants from arid ecosystems is limited. We screened the mVOCs produced by 40 core and
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