Search results for "Entire life cycle"

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Plant growth promoting potential of bacterial endophytes from three terrestrial mediterranean orchid species

2020

Orchids are highly dependent on symbiotic microorganisms during their entire life cycle. Whereas an important role in orchid seed germination and early plant development is well established for mycorrhizal fungi, the influence of endophytic bacteria on orchid growth has been less investigated. Here, we report the isolation of endophytic bacteria from different organs of three terrestrial Mediterranean orchid species (Spiranthes spiralis, Serapias vomeracea and Neottia ovata), the investigation of their potential Plant Growth-Promoting (PGP) traits and their interaction with the orchid mycorrhizal (OM) fungus Tulasnella calospora in vitro. Little overlap was found among endophytic bacteria i…

Mediterranean climatePlant growthbacterial endophytesMicroorganismPlant SciencephytohormoneBiologyplant growth promoting bacteria03 medical and health sciencesMycorrhizal fungiBotanyEntire life cycleTerrestrial orchidsEcology Evolution Behavior and Systematics030304 developmental biologyTerrestrial orchids; bacterial endophytes; plant growth promoting bacteria; mycorrhizal fungi; phytohormones0303 health sciencesTerrestrial orchids bacterial endophytes plant growth promoting bacteria mycorrhizal fungi phytohormones030306 microbiologybacterial endophytefood and beveragesterrestrial orchidsmycorrhizal fungiphytohormonesPlant developmentGerminationPlant Biosystems - An International Journal Dealing with all Aspects of Plant Biology
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Chronic toxicity of methylparathion to the rotifer Brachionus calyciflorus fed on Nannochloris oculata and Chlorella pyrenoidosa

1993

The effect of sublethal levels of methylparathion (0,1, 3, 5, 7 mg 1−1) on the freshwater rotifer, Brachionus calyciflorus, during their entire life cycle was studied. Rotifers were fed on two species of unicellular algae: Nannochloris oculata and Chlorella pyrenoidosa; both algal concentrations were 5 × 105 cell ml−1.

Mortality indexbiologyAlgaeNannochloris oculataBotanyBrachionus calyciflorusEntire life cycleChlorella pyrenoidosaRotiferFood sciencebiology.organism_classificationChronic toxicity
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