Research Progress

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  Enhanced sensitivity to higher ozone in a pathogen-resistant tobacco cultivar

  Investigations of the effects of elevated ozone (O3) on the virus-plant system were conducted to better inform virus pathogen management strategies. One susceptible cultivar of tobacco (Nicotiana tabacum L. cv. Yongding) and resistant cultivar (Nicotiana tabacum L. cv. Vam) to Potato virus Y petiole necrosis strain (PVYN) infection were grown in open-top chambers under ambient and elevated O3 concentrations. Aboveground biomass, foliage chlorophyll, nitrogen and total non-structural carbohydrate (TNCS), soluble protein, total amino acid (TAA) and nicotine content and peroxidase (POD) activity were measured to estimate the effects of elevated O3 on the impact of PVYN in the two cultivars. Results showed that under ambient O3,

  Nov 28, 2011
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  Evolutionary constraints in hind wing shape in Chinese dung beetles (Coleoptera: Scarabaeinae)

  Jun 30, 2011
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  Dissecting the Strand Folding Orientation and Formation of G-Quadruplexes in Single- and Double-Stranded Nucleic Acids by Ligand-Induced Photocleavage Footprinting.

  May 09, 2011
• The formation of stable G-quadruplexes in long double-stranded DNA

  May 05, 2011
• G-Quadruplex Hinders Translocation of BLM Helicase on DNA

  Mar 21, 2011
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  A new method for measuring the folding equilibrium constant of G-quadruplex from nucleic acids

  Mar 07, 2011
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  Universal DNA barcode preferred for animal species identification

  Feb 23, 2011
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  Stress signal causes abnormal implantation location and pregnancy loss

  Feb 15, 2011
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  Effects of transgenic Bt cotton on overwintering characteristics and survival of Helicoverpa armigera

  The cotton bollworm, Helicoverpa armigera, is one of the most serious insect pests of cotton, corn, peanut, vegetables, and other crops throughout Asia. There are four or five generations of cotton bollworm per year in northern China and overwinters as a diapausing pupa. Previous research indicated that transgenic Bt cotton affect development and reproduction of the cotton bollworm, and that a marked decrease in regional outbreaks of the cotton bollworm in multiple crops was associated with the planting of transgenicBt cotton. However the effects of transgenic Bt cotton on the overwintering generation of the cotton bollworm are unknown.

  Jan 25, 2011
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  Anti-predator defence drives parallel morphological evolution in ？ea beetles

  Predator–prey interactions are well established as a driving force in organismal evolution, and predator-related natural selection may bring about major changes in morphology and behaviour in evolutionary lineages. Yet, the mechanisms determining the outcome of these evolutionary interactions are unclear: prey and predators may change in response to each other in a coevolutionary‘arms race’, while major predators may trigger the appearance of changes in design in the prey through episodic ‘escalation’. For beetles, varied strategies exist which function to avoid predation.

  Jan 10, 2011