Tag Archives: biology

Building a better banana

The Bill and Melinda Gates Foundation are supporting the efforts of Queensland University of Technology scientists to design a better banana.

James Dale and a better banana palm for Africa. Credit: QUT
James Dale and a better banana palm for Africa. Credit: QUT

The researchers have already added provitamin A—a compound the body converts to Vitamin A—to the East African Highland banana. Now they are working to boost the iron content of the cooking banana that is a staple food of Uganda.

Led by Prof James Dale, director of University’s Centre for Tropical Crops and Biocommodities, the researchers are working with the Ugandan National Agricultural Research Organisation to modify the bananas genetically to raise their micronutrient levels, and then develop disease-resistant strains to distribute to East African farmers. The research is being funded by a $10-million grant from Bill and Melinda Gates Foundation’s Grand Challenges in Global Health Program.

James and his team developed efficient technology for raising nutrient levels in Cavendish bananas through to field trials in Queensland and then transferred it to Uganda. Ugandan scientists are now using these methods to modify East African Highland bananas genetically to increase their biosynthesis of provitamin A and their accumulation of iron.

Part of the project includes ensuring Ugandans will accept the new fruit, which has deep yellow flesh, thanks to the addition of the Vitamin A precursor, beta-carotene.

The kangaroo genome – marsupials filling the gap

Analysing the genomes of Australia’s iconic marsupials will provide insight into how they turn off and on the development of the early embryo; give birth to very underdeveloped young, and why marsupial milk changes radically over the months of lactation.

This knowledge could lead scientists to new treatments for premature births, better milk production in cows, as well as novel antibiotics. Marsupials fill an evolutionary gap between the distantly related birds/reptiles and the more closely related placental mammals (such as humans and cows).

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Ocean acidification threatens marine ecosystems

Ocean acidification, caused by increasing amounts of atmospheric carbon dioxide dissolving in the ocean, poses a serious threat to marine ecosystems.

Increasing acidity affects the ability of some planktonic organisms to form shells, and is expected to change the species composition of plankton, with flow-on effects to higher levels of the food web.

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Researcher to fight insects with spider venom

An Australian researcher is working on environmentally friendly insect control methods based on spider venom compounds.

Professor Glenn King recently joined The University of Queensland’s Institute for Molecular Bioscience, where he will further develop his pioneering approach to insecticide discovery.

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Dairy stem cells a world first

Embryonic stem cells from cattle can now be stored in mass in the laboratory, paving the way for advanced breeding developments in dairy cattle and other livestock.

These new ways of efficiently isolating and maintaining cells provide scientists from Australia’s Dairy Cooperative Research Centre with the raw materials to investigate a range of stem cell applications.

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Strawberries that pack a flavour punch

Researchers are looking at the genetic and environmental factors that influence the taste of strawberries. Credit: RMIT
Researchers are looking at the genetic and environmental factors that influence the taste of strawberries. Credit: RMIT

Why does the same species of strawberry taste different in different countries? How is it that Californian strawberries are loved by locals but fail to impress Down Under?

RMIT University researchers, Assoc. Prof. Eddie Pang and Prof. Phil Marriott, are looking for answers to those questions to help Australian strawberry growers identify which breeds grow best in which region.

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Research combats invasive ants on Indigenous lands in northern Australia

Helicopters are used by Ben Hoffmann and Dhimurru ranger staff to access remote infestations of yellow crazy ants. Credit: CSIRO Darwin
Helicopters are used by Ben Hoffmann and Dhimurru ranger staff to access remote infestations of yellow crazy ants. Credit: CSIRO Darwin

Invasive ants are among the greatest environmental, social and economic threats to Australia, potentially costing the nation more than $1 billion annually. However, knowledge of the basic biology of these pest species remains rudimentary, and many management operations have been unsuccessful.

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Surviving in the city

ARCUE is working to understand how plants and animals adapt to urban life. Credit: Janusz Molinski/Royal Botanic Gardens Melbourne
ARCUE is working to understand how plants and animals adapt to urban life. Credit: Janusz Molinski/Royal Botanic Gardens Melbourne

Why do some plant and animal species thrive in the city while others disappear?

Most ecological studies are done in natural environments not in towns and cities so we lack information on urban ecology.

A team from Melbourne’s Royal Botanic Gardens is changing that.

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