Gibberellic acid nitrite stimulates germination of two species of light-requiring seeds via the nitric oxide pathway

We used two species of light-requiring seeds, Paulownia tomentosa, which have absolute light requirement (no germination in darkness), and Stellaria media seeds, which germinate in darkness to a certain extent because of presence of preformed active phytochrome, to obtain results strongly suggesting that gibberellic acid nitrite stimulates seed germination via its capability as a functional NO donor. Exogenous application of gibberellic acid nitrite stimulates gibberellin-insensitive Stellaria media seed germination in darkness as do a wide variety of NO donors. Pure gibberellic acid could replace the light requirement of P tomentosa seeds, thus enabling them to germinate in darkness. Gibberellic acid nitrite did not have this effect. A stimulative effect from gibberellic acid nitrite could be detected only after exposure of these seeds to short, 10 min, pulse of red light. Taken together, these results suggest that gibberellic activity of gibberellic acid nitrite is lost after nitrosation but, regarding to the presence of -O-NO moiety in the molecule, gibberellic acid nitrite shares stimulative properties in seed germination with other compounds with NO-releasing properties

Endemic plant species of sara mountain. Part VI. Essential oil of achillea chrysocoma

Achillea chrysocoma Friv. (Asteraceae) is an endemic plant of the Balkan peninsula. Herb of this yarrow contained up to 0.2% of essential oil. The oil was analyzed by GC and GC/MS and 48 of the 79 detected peaks were identified. The major constituent was 1,8-cineole (17.0%).Ministry of Science and Tehnology of Serbia - Investigation of endemic plants of the Sara mountain through the Project No.S.4.03.38.259(T -2

Fatty acid composition of seed oil of Phlomis fruticosa growing in Montenegro

Ministry of Science of the Republic of Serbia [143041, 143049

Etarsko ulje nadzemnog dela vrste Artemisia lobelii

Essential oils of the aerial parts of Artemisia lobelii var. biasolettiana and A. lobelii var. canescens were found (according to GC and GC/MS) to contain oxygenated sesquiterepenes as the main coinstitutents. Among them the most abundant were diastereomeric davanones constituting ca 48% and 59% of the oil in var. biasolettiana and canescens, respectively.Ispitivan je hemijski sastav etarskog ulja nadzemnih delova dva varijeteta vrste Artemisia lobelii All., određenih prema Hayek (6), kao var. canescens (DC.) Briqu. i var. biasolettiana (Vis.) Maly K. Uzorci obe vrste su sakupljene avgusta 2001. na lokalitetu Ljevište (Moračke planine - Crna Gora) i sadrže uglavnom slične konstituente. Dominantni su oksigenovani seskviterpeni. Među njima, najzastupljeniji su diastereomerni dioksigenovani seskviterpeni - davanoni (Tabela 1, komponente 48, 54 i 56), koji su po prvi put detektovani u etarskom ulju ovih vrsta

Chemical composition of Tanacetum larvatum essential oil

Tanacetum larvatum (Gris.) Kanitz. is an endemic perennial herb distributed on a rocky terrain in Serbia(Kosovo), Montenegro and Albania. The chemical composition of T larvatum essential oil, obtained from two locations in Montenegro (Mt. Komovi [Sample II] and Mt. Prokletije [Sample II]) was investigated. The oils obtained by hydrodistillation were analyzed by GC and GC/MS, on the two different capillary columns. The aerial parts of T. larvatum yielded 0.3% and 0.2% of a yellowish oil (Sample I and Sample II, respectively). About 40 compounds were identified, representing similar to 89% and 96% of the total oil content in the Samples I and II, respectively. tran's-Sabinyl acetate was found to be the dominant component (51.2% and 69.7%). Among the rest of compounds beta-pinene (7.7% and 4.3%) and camphor (6.3% and 4.3%) were the most abundant in both samples

Etarsko ulje nadzemnog dela vrste Artemisia lobelii

Essential oils of the aerial parts of Artemisia lobelii var. biasolettiana and A. lobelii var. canescens were found (according to GC and GC/MS) to contain oxygenated sesquiterepenes as the main coinstitutents. Among them the most abundant were diastereomeric davanones constituting ca 48% and 59% of the oil in var. biasolettiana and canescens, respectively.Ispitivan je hemijski sastav etarskog ulja nadzemnih delova dva varijeteta vrste Artemisia lobelii All., određenih prema Hayek (6), kao var. canescens (DC.) Briqu. i var. biasolettiana (Vis.) Maly K. Uzorci obe vrste su sakupljene avgusta 2001. na lokalitetu Ljevište (Moračke planine - Crna Gora) i sadrže uglavnom slične konstituente. Dominantni su oksigenovani seskviterpeni. Među njima, najzastupljeniji su diastereomerni dioksigenovani seskviterpeni - davanoni (Tabela 1, komponente 48, 54 i 56), koji su po prvi put detektovani u etarskom ulju ovih vrsta

Gibberellic acid nitrite stimulates germination of two species of light-requiring seeds via the nitric oxide pathway

We used two species of light-requiring seeds, Paulownia tomentosa, which have absolute light requirement (no germination in darkness), and Stellaria media seeds, which germinate in darkness to a certain extent because of presence of preformed active phytochrome, to obtain results strongly suggesting that gibberellic acid nitrite stimulates seed germination via its capability as a functional NO donor. Exogenous application of gibberellic acid nitrite stimulates gibberellin-insensitive Stellaria media seed germination in darkness as do a wide variety of NO donors. Pure gibberellic acid could replace the light requirement of P tomentosa seeds, thus enabling them to germinate in darkness. Gibberellic acid nitrite did not have this effect. A stimulative effect from gibberellic acid nitrite could be detected only after exposure of these seeds to short, 10 min, pulse of red light. Taken together, these results suggest that gibberellic activity of gibberellic acid nitrite is lost after nitrosation but, regarding to the presence of -O-NO moiety in the molecule, gibberellic acid nitrite shares stimulative properties in seed germination with other compounds with NO-releasing properties.nul

Essential oil of achillea corabensis (heimerl) micevski

The essential oil of Achillea corabensis (Heimerl) Micevski collected from a natural location as well as from plants cultivated in the Sirinic valley of Sara mountain was analyzed. In the oil of collected plants 41 compounds were identified, while in the oil from the cultivated plants 36 compounds were identified. In the oil obtained from plants harvested in the wild the monoterpene fraction represented 88.0% of the whole oil, whereas the sesquiterpene fraction represented 5.9% and other compounds 3.1% of the total oil composition. In the oil of cultivated plants, the monoterpene fraction represented 74.6%, the sesquiterpene fraction 10.2% and other compounds 3.5% of the oil composition. In both cases the most abundant compounds were sabinene (33% and 25%) and p-cymene (29–4% and 17%). © 1997, Taylor & Francis Group, LLC. All rights reserved

Gibberellic acid nitrite stimulates germination of two species of light-requiring seeds via the nitric oxide pathway

We used two species of light-requiring seeds, Paulownia tomentosa, which have absolute light requirement (no germination in darkness), and Stellaria media seeds, which germinate in darkness to a certain extent because of presence of preformed active phytochrome, to obtain results strongly suggesting that gibberellic acid nitrite stimulates seed germination via its capability as a functional NO donor. Exogenous application of gibberellic acid nitrite stimulates gibberellin-insensitive Stellaria media seed germination in darkness as do a wide variety of NO donors. Pure gibberellic acid could replace the light requirement of P tomentosa seeds, thus enabling them to germinate in darkness. Gibberellic acid nitrite did not have this effect. A stimulative effect from gibberellic acid nitrite could be detected only after exposure of these seeds to short, 10 min, pulse of red light. Taken together, these results suggest that gibberellic activity of gibberellic acid nitrite is lost after nitrosation but, regarding to the presence of -O-NO moiety in the molecule, gibberellic acid nitrite shares stimulative properties in seed germination with other compounds with NO-releasing properties.nul