A5061012429- Plant Virus Research Studies
- Plant responses to elevated CO2
- Plant and Fungal Interactions Research
- Plant Pathogenic Bacteria Studies
- Aquaculture disease management and microbiota
- Plant Stress Responses and Tolerance
- Aquaculture Nutrition and Growth
- Plant nutrient uptake and metabolism
- Insect-Plant Interactions and Control
- Plant Parasitism and Resistance
- Animal Virus Infections Studies
- Plant Micronutrient Interactions and Effects
- Plant Pathogens and Fungal Diseases
- Plant Disease Resistance and Genetics
- Photosynthetic Processes and Mechanisms
- Plant Water Relations and Carbon Dynamics
- Rabbits: Nutrition, Reproduction, Health
- Fungal Infections and Studies
- Ocean Acidification Effects and Responses
- Botanical Studies and Applications
- Medicinal plant effects and applications
- Coral and Marine Ecosystems Studies
- Mediterranean and Iberian flora and fauna
- Lichen and fungal ecology
- Transgenic Plants and Applications
University of Algarve
2007-2024
University of Groningen
1996
In keeping with the premises of Blue Circular Economy in European Union, present study explored possibility using invasive brown alga Rugulopteryx okamurae aquafeeds for sea bass (Dicentrarchus labrax). Assuming raw algae biomass could negatively impact animal performance, four experimental formulations were prepared, by including macroalgae material at 5%, crude (CR), enzymatically hydrolysed and fermented (EF), (E), or (F) R. biomass, which we tested against a control feed (CT). To...
The effects of soil drying on the activity nitrate reductase (NR; EC 1.6.6.6) were studied in Helianthus annuus L. and non‐nodulated Lupinus albus plants growing under two nutrient supply regimes. NR was assessed leaf root extracts by measuring unphosphorylated active form (NR act ), maximal extractable max ) activation state. To obtain an insight into potential signalling compounds, nitrate, free amino acids soluble sugars also quantified. In both species, foliar negatively affected a...
Within a scenario of increasing atmospheric CO2 and ocean acidification (OA), it is highly relevant to investigate its impacts not only on fish performance but also intestinal microbiome how that reflects host health. The main objective this study was establish if the microbiota sea bream (Sparus aurata) affected by high level in line with predictions for century. bacterial communities fluid were characterized animals kept at present-day (400 μatm) switched (1200 1 month. Bacterial taxa...
The effects of drought on the activity nitrate reductase (NR) were studied in Helianthus annuus L. plants subjected to soil drying and subsequent re-watering. Drought did not negatively affect activation state NR, but resulted linearly-correlated decreases unphosphorylated active form total both roots leaves. concentration roots, xylem leaves also decreased water-stressed plants, whereas amino acids was only transiently depressed at leaf level. In contrast, soluble sugars accumulated plants....
Doubling the atmospheric CO 2 concentration from 350 to 700 μ1 1 −1 increased relative growth rate (RGR) of hydroponically grown Urtica dioica L. and Plantago major ssp. pleiosperma Pilger only for first 10–14 days. Previous experiments with P. led conclusion that RGR did not respond in proportion photosynthesis. The present paper is focussed on analysis impact changes leaf morphology, dry matter partitioning, chemical composition ontogenetic drift this discrepancy. Soon after start...
Vegetative plants of an inbred line, A4, Plantage major ssp. pleiosperma (L.) Pilger were grown at 350 mu l 1(-1) or elevated (700 l(-1)) CO2 in non-limiting nutrient solution with nitrate. Both the relative growth rate (RGR) and root to total plant weight ratio (RWR) increased by CO2. However, stimulation both RGR RWR was transient did not last longer than 8 days. To investigate physiological mechanisms involved this stimulation, related changes C/N metabolism examined. In roots soluble...
The effects of water and nutrient availability on photosynthetic capacity juvenile adult leaves Eucalyptus globulus Labill. seedlings were evaluated by measuring oxygen evolution at light CO(2) saturation. Seedlings supplied with near optimal amounts nutrients had higher growth rates than non-irrigated, unfertilized control seedlings, but was similar in both treatments. Differences foliar nitrogen concentrations between the two treatments minor, which largely explains why response to...
Vegetative plants of an inbred line, A4, Plantago major ssp. pleiosperma (L.) Pilger were grown at 350 μl I −1 or elevated (700 ) CO 2 in non‐limiting nutrient solution with nitrate. Both the relative growth rate (RGR) and root to total plant weight ratio (RWR) increased by . However, stimulation both RGR RWR was transient did not last longer than 8 days. To investigate physiological mechanisms involved this stimulation, related changes C/N metabolism examined. In roots soluble sugar...
Abstract Recent technological development of molecular methods has led to the proliferation new rapid PCR or reverse‐transcriptase (RT)‐PCR‐derived diagnostic tests for plant viruses. Nevertheless, routine use, reliability all these is not widely established and there still an apprehension adopt them in official certification material. This partly because lack confidence obtained results poor knowledge on reproducibility limits RT‐PCR protocols. There a information adequate risk assessment...
summary The effect of elevated CO 2 on the relative growth rate (RGR) Plantago major ssp. pleiosperma was studied during vegetative stage, in relation to plant development, by growing plants at 350 μl 1 −1 or 700 non‐limiting nutrient solution with nitrate. To minimize interference accumulation non‐structural carbohydrates interpretation results, RGR expressed a f. wt basis (RGR FW ), as were all weight ratios. Stimulation whole transient, and did not last longer than 8 d. At same time...
Abstract Amplified fragment length polymorphism and inter simple sequence repeat markers were used to assess the genetic structure of Cistus ladanifer its differentiation from co‐occurring species. Clear was found between two populations corresponding morphological description palhinhae 23 analyzed. However, magnitude (DICE coefficients >0.98) appears be more in agreement with taxonomic designation ssp. sulcatus , which has been proposed by some authors, not C. . Dendrogram analysis...
The capsid protein gene of three Egyptian CTV isolates from two locations was amplified by immunocapture RT-PCR and analysed by single stranded conformation polymorphism sequencing. CTV isolates studied did not differ significantly in sequence composition each isolate consisted very similar haplotypes. Comparison with reference sequences elsewhere the world showed that these haplotypes clustered close to severe strain T3 Florida causing quick decline stem pitting. Analysis the deduced...
Genomic variability of the coat protein gene Citrus tristeza virus isolates obtained from old Meyer lemon introductions in Morocco and more recent budwood Spain were studied. The protein gene was amplified directly infected tissue by immunocapture RT-PCR analysed single stranded conformation polymorphism (SSCP) sequencing. Each isolate consisted several related genomic variants, typical a quasi-species. Although SSCP analysis has only limited typing ability it could be used an initial...