Rubiothiazepine a Novel Unusual Cytotoxic Alkaloid from Ixora undulata Roxb. Leaves

Mohammed, Magdy M D

doi:10.4172/2329-6836.1000128

Cited by 6 publications

(1 citation statement)

References 8 publications

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“…have reported that plant metabolites such as catechin and coumarin may serve as co-metabolites for polychlorinated biphenyl (PCB) degrading bacteria. More so, thiazepines which are substituted thiepins have been reported to act as phytoalexins(Pedras and To 2015) Mohammed et al (2014). opined that thiazepine type alkaloids are rare in nature and most of the known thiazepine rings occur in 1,4-form and generally fused with other substituents like benzene.…”

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Cowpea induced physicochemical and biological rhizosphere changes in hydrocarbon contaminated soil

et al. 2022

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To understand the in uence of cowpea on its rhizosphere physicochemical and biological conditions. MethodsPristine soil samples were contaminated with Bonny-Light crude oil and viable seeds of cowpea were planted to establish rhizosphere soil. Cowpea root exudates were collected and characterized while soil metabolic activities, physicochemical properties and rhizosphere effect were monitored following plant emergence. ResultsCowpea root exudates were composed of organic acids, phenolics, carbohydrates and hydrocarbons. High rate of soil respiration and microbial biomass carbon were observed in the contaminated rhizosphere reaching its peak on 12th week (70.56 mgCO 2 g −1 day −1 ) and 10th week (23.18mg/Kg) respectively. Lower rates of soil respirations and microbial biomass carbon were observed in contaminated (10.28 mgCO 2 g −1 day −1 ; 1.24 mg/Kg) and uncontaminated (0.23 mgCO 2 g −1 day −1 ; 0.37 mg/Kg) non-rhizosphere control soils respectively. The metabolic properties were positively correlated with soil organic matter contents and microbial size (r = 0.98; p < 0.05). There was considerable improvement in soil physicochemical properties in the cowpea rhizosphere as compared to non-rhizosphere soil Microbial populations were generally improved with positive rhizosphere effect values (>1) presumably due to the presence of compounds in exudates that promote microbial growth. ConclusionThe results highlighted the in uence of cowpea on its rhizosphere conditions which is a good indication for its ability to promote plant growth and environmental cleanup. Therefore, there is the need to further understand the microbial community dynamics in cowpea rhizosphere using culture-independent techniques.

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confidence: 99%