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The role of a light-upregulated NF-YB member in photosynthesis and development in Triticum aestivum
Troy J. Stephenson¹², C. Lynne McIntyre¹, Christopher Collet² and Gang-Ping Xue¹

Nuclear Factor Y transcription factor is a heterotrimeric complex comprised of the three subunits: NF-YA, NF-YB and NF-YC. Each of the three subunits are encoded by multiple genes in plants, with unique mRNA expression profiles within each family including differential response to development and external stimuli. In this study we identified a light-upregulated TaNF-YB subunit member involved in the regulation of chlorophyll biosynthesis, photosynthesis-related genes, anthesis and flowering time

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TRANSGENIC POTATO PLANTS WITH GENES FOR SYNTHESIS OF CECROPIN-MELLITIN ANTIMICROBIAL PEPTIDES
N. Vutto, T. Gapeeva, ?. Pundik, I. Volotovsky

Transgenic potato plants of Belarusian varieties with genes for synthesis of cecropin-mellitin cationic antimicrobial peptides had increased resistance against pathogens Phytophtora infestans and Alternaria solani.

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Antioxidant Capacity and Polyphenol Content of Brown Seawedds after Heat Processing
Gaurav Rajauria, Shilpi Gupta, Nissreen Abu-Ghannam and Amit Kumar

Seaweeds or marine macroalgae are renewable living resources which are also used as food, feed and fertilizer in many parts of the world. They are able to produce a great variety of secondary metabolites. Results showed that the heat processing not only enhanced the contents of biologically active compounds in seaweeds but also the biological activity associated with these compounds as compared to the unprocessed seaweeds.

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Biomass and Quercetin Accumulation Predict Drought Sensitivity in a Novel White Clover Hybrid
Wouter L. Ballizany; Rainer W. Hofmann; Brent A. Barrett

Previous research showed that levels of the flavonol quercetin (Q) were positively associated with UV stress resistance in populations of white clover (Trifolium repens L.), and inversely linked to dry matter (DM) production (Hofmann et al, 2000). Q, and to a lesser degree its precursor kaempferol (K), have been implicated as antioxidants and energy dissipating compounds in plants exposed to stress, and could be useful markers for resistance to other stress factors.

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Biomass and Quercetin Accumulation Predict Drought Sensitivity in a Novel White Clover Hybrid
Wouter L. Ballizany, Rainer W. Hofmann, Brent A. Barrett

This study shows for the first time that drought resistance in a new white clover hybrid can be linked to drought-induced increases in quercetin levels, and quercetin-to-kaempferol ratio levels. Subsequent DNA-marker analysis studies will be used to identify quantitative trait loci (QTL) for improved drought resistance in white clover to combine high Q response with high herbage yield.

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Collaboration key to developing world genomics research

Information exchange and knowledge transfer are key to harnessing genomics research for developing countries, write Josefina Coloma and Eva Harris in a PLoS Medicine essay.

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Effects of host plant and temperature on Aphidius colemani (Hymenoptera: Braconidae) intrinsic rate of population increase
Rostislav Zemek, Vojtech Jarosik, Jan Havelka and Fernando P. Chihale

The aim of this paper was to investigate the aphid-mediated effects of plant (Nicotiana tabacum or Vicia faba ) on A. colemani life-history characteristics. The obtained results corroborated our hypothesis that the host plant is important factor in an aphid-parasitoid relationship. Plant toxins are probably the cause of lower rate of population increase in A. colemani developed on tobacco-reared aphids.

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Perspectives on the biological control of Cameraria ohridella
Rostislav Zemek, Eva Prenerova, Lubomir Volter, Frantisek Weyda and Vaclav Skuhravy

We studied the impact of parasitoids on C. ohridella in the Czech Republic and also searched for entomopathogenic fungi associated with this pest. The results showed that the rate of parasitism was 5-15%. The most abundant parasitoid species were Minotetrastichus frontalis, Pnigalio sp. and Pediobius saulius. Using the Galleria-bait method we isolated many strains of entomopathogenic fungi. Dominant species were Paecilomyces fumosoroseus, Paecilomyces farinosus and Beauveria bassiana.

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Low-cost wind tunnel for micro-arthropods
Rostislav Zemek and Frantisek Reindl

Here we describe a construction of wind tunnel suitable for close-up observation of micro-arthropods behavior under various conditions. The tunnel was made of glass with inner dimensions 6x6x110 centimeters. Both the inlet and outlet compartments were equipped with an electric fan, series of plastic diffusers and a metal mesh to minimize wind turbulence inside a 40 centimeters-long observation chamber in the middle of the tunnel.

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Showing Results 51 - 60 of 65
Scientific News
Replace Reduce Refine
A way forward for antibiotic use in agriculture.
Understanding the Spread of the Ash Dieback.
The Genome Analysis Centre (TGAC) has released new genetic data that will help understand the epidemic, across Europe and the UK.
A-maize-ing Double Life of a Genome
Study findings could help current efforts to improve existing crop varieties.
Determination of Arabidopsis Thaliana Telomere Length by PCR
Researchers have designed two telomeric degenerated primers that amplify Arabidopsis telomeres by MMQPCR.
Boron Tolerance Discovery for Higher Wheat Yields
Adelaide scientists have identified the genes in wheat that control tolerance to a significant yield-limiting soil condition found around the globe - boron toxicity.
Invasive Plants Can Accelerate Global Warming
Research from Clemson University sheds new light on how invasion by exotic plant species affects the ability of soil to store greenhouse gases.
Pest Attacks Can Lead to Bigger Crop Yields
New project receive three-year funding of $498,000 from USDA.
Common Bean Critically Important to the Global Food Supply
The bean genome sequence provides powerful tools to improve critical food crop.
Gene Study Shows How Sheep First Separated from Goats
Findings support the development of DNA testing to speed-up selective breeding programmes.
Harvesting Sunlight to Help Feed and Fuel the World
Three U.S./U.K. funded projects have been awarded a total of almost $9 million in additional funding to continue research projects aimed at improving the efficiency of photosynthesis.
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