Biology
Malaria modelling: An optimal control problem
Malaria, a life-threatening mosquito-borne disease, is a leading cause of death and infection in many developing countries. Using mathematical modelling, Professor Wandi Ding, Middle Tennessee State University, USA, and her colleagues investigate optimal control of malaria, using both the sterile insect technique and insecticide-treated nets. Their simulations show that a combination of both strategies results in a more rapid elimination […]
An in-depth look at the East Coast fever vaccine
East Coast fever causes significant losses among cattle in eastern, central and southern Africa, affecting the livelihoods of livestock keepers in these regions. There is no conventional vaccine for this disease and, instead, an infection and treatment method is implemented using Muguga cocktail and oxytetracycline. Professor Andrew Peters and Dr Fiona Allan of the University of Edinburgh conducted a systematic […]
Foresting Douglas-fir through targeted micropropagation
Conifer trees are in high demand for their aesthetic value and desirable wood, but producing these trees rapidly is challenging because of their long life cycle. Increased effort is underway to use artificial techniques to propagate Douglas-fir. However, this is constrained by a lack of viability and recalcitrance of in vitro cultures. Recent work by Drs Dmytro Yevtushenko and Mariana […]
Unearthing avian evolution: What can we learn from the skeletons of flightless birds?
The evolution of flightless birds is a conundrum that scientists are still trying to solve. Using his experience in clinical medicine, Dr Peter Johnston from the University of Auckland, New Zealand, has recently unearthed new information about the sensory adaptations of several species of flightless birds, including the now extinct moa. This work demonstrates that, in contrast to previous hypotheses, […]
Energy transformation in living cells: The role of vitamin C
The biochemical processes responsible for energy production in cells and for its utilisation in cellular metabolism have been studied extensively. Although several details of how these complex chemical reactions take place have progressively been clarified, far less is known about the structure of the biomolecules involved and their interactions. Professor emeritus János Hunyady, from the University of Debrecen, Hungary, is […]
Look at those feet! Early evolution of rodents and lagomorphs
Rodents and lagomorphs form Glires, a group of gnawing mammals with enlarged ever-growing incisors. In the beginning, Glires were neither ‘true’ rodents nor lagomorphs; we call them basal or stem taxa. Species from this incredibly successful group had different heel structures to suit different lifestyles. Fast running or jumping requires different heel shapes compared to slow clambering or climbing. Dr […]
New theories expand cognition to fungi
Consciousness is an elusive concept. Professor Nicholas Money of Miami University in Oxford, Ohio has argued for a new philosophy of cellular consciousness and suggests that fungi have minds. When we explore the sensitivity of fungi and other microbes and recognise their ability to interpret and respond to their environment, it seems logical to extend the definition of consciousness to […]
Understanding tomato plant metabolism for sustainable production
Historically, crops have been domesticated without limiting their access to nutrients or water. Since these varieties did not need efficient nutrient absorption and distribution mechanisms, they are poorly adapted to a sustainable agricultural system which limits the need for excess fertiliser. Drs Laura Carrillo and Joaquin Medina of the Centre of Biotechnology and Genomics (CBGP) in Madrid, Spain, investigated the […]
Green cleaning of heavy metals in water
Many anthropogenic activities have resulted in pollution of water with heavy metals, and pose a huge health risk for humans and animals. Some plants, however, can extract and accumulate these metals from soil and water without any toxic effects. Plant flavonoids are compounds that have the chemical ability to bind to heavy metals. Recent work by Dr Robert Luckay and […]
Blotches and spots: Understanding blemishes of faba bean
Over the last decade, grain legumes such as faba beans have been cultivated widely in the Nordic and Baltic countries. Faba bean is the world’s second-highest grain-yielding legume, yet the occurrence and spread of specific diseases of faba bean grown in Europe have not been studied in great detail. Dr Biruta Bankina and colleagues Dāvids Fridmanis, Gunita Bimšteine, Jānis Kaņeps, […]