Showing posts with label plant science. Show all posts
Showing posts with label plant science. Show all posts

Saturday, March 24, 2012

GM Potato set to be planted in Ireland

A major new EU study is set to examine the effects of growing GM, blight-resistant potato plants on biodiversity and the environment in agricultural ecosystems. It will also see the first GM crops being grown in Ireland since the late 1990's.

In a statement issued at the end of February, Teagasc (the Irish agricultural development agency) announced that they are to seek a license to carry out field trials of GM potatoes as part of the AMIGA consortium - a group including representatives of research bodies from 15 EU countries.

Late Blight, caused by the fungal-like organism Phytophthora infestans, decimated the Irish potato crop  in the 1840s leading to the Great Famine. Since then, it has remained a problem for Irish farmers, requiring chemical fungicides to be used to maintain Irish potato yields. GM potatoes have the potential to protect the potato plant from Late Blight attack without the necessity for large amounts of fungicide to be applied.

The potato variety Desiree was transformed withe the Rpi-vnt1.1 gene which confers broad spectrum resistance to Phytophthora infestans. That gene, along with its own promoter and terminator regions were taken from the wild potato species Solanum venturii and inserted into the cultivated potato using Agrobacterium tumefaciens-mediated transformation.


While there are indications that public concern over GM crops has declined in the UK, the news that field experiments will be carried out in Ireland for the first time since the late 1990s has drawn some criticism here.

In a statement released last week, Irish Organic Farmers and Growers Association (IOFGA), called the experiments planned for Teagasc's Oakpark headquarters a waste of taxpayers money. "In light of the fact that Teagasc has lodged an application with the EPA (Environmental Protection Agency) for a licence to grow GM potatoes at its headquarters in Oakpark, IOFGA are demanding that Teagasc be held accountable for their decision to waste taxpayers money on this project."

File Photo: Minister Ruairi Quinn at an Anti-GM event last year
Grace Maher, Development Officer with IOFGA said that considering growing GM in Ireland is "economic suicide" and that the move would put at risk an export market worth 9.1 billion: "Ireland has an excellent reputation internationally as a clean green island that is also a GM free region, and we need to build on this reputation not destroy it”.

The statement ends by accusing Teagasc of pedalling an "unwanted technology":
"In this austere economic climate we need to end wasteful public spending immediately and enforce accountability on those who continue to do so."

Unfortunately, it seems the lobby group for the organic industry, is jumping the gun a bit here.

The funding comes directly from the EU's FP7 research programme - a €50 billion fund specifically designated for research and technological development. There is no question of further money coming from Irish taxpayers.

No matter where the money comes from, there is also a wider issue. Teagasc is Ireland's agriculture and food development agency. It is that organisation's role to carry out research leading to a better understanding of agriculture and new agronomic techniques. To accuse such a body of "wasting" money by doing the very thing is was set up to do, is ridiculous. Any arguments for or against GM crops need to be based on firm scientific evidence and that does not simple fall out of the sky.

The field tests to be carried out at Oakpark will look at the impact of GM plants on the surrounding ecosystem and John Spink, Head of Crops Research at Teagasc was keen to point out that the research is "not about testing the commercial viability of GM potatoes".

"The GM study is about gauging the environmental impact of growing GM potatoes in Ireland and monitoring how the pathogen, which causes blight, and the ecosystem reacts to GM varieties in the field over several seasons.”

Mindful of the controversy surrounding trials of GM sugar beet in Ireland in the late 1990s by Monsanto, these new experiments will use a potato developed at Wageningen University in the Netherlands and there will be no biotech or GM company involved. The sugar beet trials ended with a number of the sites being destroyed by a group styling itself the Gaelic Earth Liberation Front.

According to documents submitted to the EPA as part of the licence application, the field experiments are designed to measure the impact of GM potato cultivation on bacterial, fungal, nematode and earthworm diversity in the soil compared to a conventional system; to identify positive or negative impacts of GM potato on integrated pest management systems; and to use the project as a tool for education in order to engage and discuss the issues surrounding GM with stakeholders and the public.

As Teagasc researcher Dr. Ewen Mullins put it: “It is not enough to simply look at the benefits without also considering the potential costs. We need to investigate whether there are long term impacts associated with this specific GM crop and critically we need to gauge how the late blight disease itself responds. This is not just a question being asked in Ireland. The same issues are arising across Europe.”

Speaking to the Irish Examiner, Dr. Mullins remarked: "People are asking about the merits of GM potatoes.At Teagasc, we have a remit to inform people. We haven’t had GM field trials here since the late 1990s. The goal is to look at all of the environmental impacts, and to fill the vacuum that exists currently in terms of impartial knowledge."

An edited version of this article appears on the Guardian's Notes and Theories blog. You can read it here.

Tuesday, November 22, 2011

World’s first night flowering orchid discovered on the island of New Britain

B. nocturnum (Image: J. Vermeulen)
Botanists from the Royal Botanic Gardens, Kew, and the Netherlands Centre for Biodiversity Naturalis have described the first night-flowering orchid known to science. The discovery is published in the Botanical Journal of the Linnean Society.

The new night flowering species, Bulbophyllum nocturnum, from the island of New Britain near Papua New Guinea, is the first known example of an orchid species with flowers that consistently open after dark and close in the morning. Its flowers last one night only.

A relatively small number of plant species have flowers that open at night and close during the day. Until now, no orchids were known among them. This in spite of the fact that many orchids are pollinated by moths. But these moth-pollinated orchids all have flowers that remain open during the day, even if they are mainly pollinated after dark.

Bulbophyllum nocturnum was discovered by Dutch orchid specialist Ed de Vogel on a field trip to the island of New Britain, where he was allowed to collect some orchids in a logging area for cultivation at the Hortus Botanicus in Leiden, the Netherlands.

Under the care of garden manager Art Vogel one of these plant soon produced buds. Their opening was eagerly anticipated as de Vogel and his colleagues had already established that this plant was a member of the Epicrianthes group of orchids of the genus Bulbophyllum. Epicrianthes contains many rare and bizarre species, most of which have only been discovered recently as they occur in some of the remotest jungle habitats on earth.

Frustratingly, however, the buds all withered once they had seemingly reached the size at which they should open. Wanting to get to the bottom of this, de Vogel took the plant home with him one evening in order to find out exactly what happened to the buds.

B. nocturnum (Image: A. Schuiteman)

To his surprise, the bud that was then present opened up at ten in the evening, long after dark, revealing the flower of an undescribed species.

Observations on subsequent buds confirmed that they all opened around 10pm, and closed the next morning around 10am. The flowers lasted only one night, which explained why the buds were seemingly about to open one day and withered the next.

Royal Botanic Gardens, Kew orchid specialist, André Schuiteman, and Leiden Bulbophyllum expert, Jaap Vermeulen, teamed up with de Vogel to investigate and describe this remarkable new species.

Says AndrĂ© Schuiteman of the discovery, “This is another reminder that surprising discoveries can still be made. But it is a race against time to find species like this that only occur in primeval tropical forests. As we all know, such forests are disappearing fast. It is therefore increasingly important to obtain funding for the fieldwork required to make such discoveries.”

Why Bulbophyllum nocturnum has adopted a night flowering habit is unknown and requires further investigation. However, it may be speculated that its pollinators are midges that forage at night.

In February 2012 Kew’s Tropical Extravaganza festival (4 February – 4 March 2012) will celebrate the beauty and diversity of orchids. Orchids make up what is probably the largest plant family on earth, with an estimated 25,000 species. Their flowers show a tremendous range of variation in size, colour and shape.

Friday, October 14, 2011

Bread and Circuses: Putting plants back at the centre of our city

As part of my regular series of posts for the new Cork Independent Blog, I look at the recently announced 'Mardyke Gardens' project and argue that, far from being a waste of money, it could serve to refocus much needed attention on the importance of plants to society.

"While I don’t expect the Mardyke Gardens project to feed the world, it is essential in that it refocuses all our minds on the important of plants, both for their integral beauty and uplifting place in our lives and in our city; and also for the economic benefits they can provide for us. If this project is handled correctly and the scientific elements emphasised, it may well encourage people to look at plants afresh and begin to face the challenges of a rising global population, knowing that plants are central to all our lives on earth."


Thursday, September 8, 2011

"Plant Science has never been more important"

The work of Plant Scientists is crucial to our long-term survival, according to a hard-hitting letter by an international group of botanists and crop scientists published this week.

After an online consultation, the authors have drawn up a list of 100 important questions that urgently need to be addressed by the next generation of plant biologists.

"Plant science has never been more important" the authors state. Global challenges including the production of abundant safe and nutritious food, shelter, clothes, fibre and renewable energy can only be met, according to the authors, "in the context of a strong fundamental understanding of plant biology and ecology, and translation of this knowledge into field-based solutions".

In order to see what questions plant scientists should be considering, the authors compiled a list of 100 important questions facing plant science research.

The top-ten questions are:

  • How do we feed our children's children?
  • Which crops must be grown and which sacrificed, to feed the billions?
  • How can we deliver higher yields but at the same time reduce environmental impact of agriculture?
  • What are the best ways to control invasive species of plants, pests and pathogens?
  • Should GM crops require special regulation?
  • How can plants curb global warming?
  • How do plants contribute to maintaining human life on earth?
  • What will be the new scientific approaches central to plant biology in the coming century?
  • How do we ensure that society appreciates the importance of plants and how can we attract the "best and brightest" into plant science?
  • How do we make sure sound science informs policy decisions?

"Plant science is central to addressing many of the most important questions facing humanity", the authors conclude. The importance of plants also extends well beyond agriculture and horticulture as we "face declining  solid fuel reserves, climate change, and a need for more sustainable methods to produce fuel, fibre, wood and industrial feedstocks".

The authors note that training new plant scientists is essential given the central role they will play in the future:
"As plant science becomes increasingly important, we need to attract the brightest and best to careers in plant research. School education does not include the most interesting or relevant aspects of plant science, and discourages young people from studying the subject at university. This is indefensible in a world with such a strong requirement for outstanding plant scientists, and steps should be taken to put it right".

The authors are clear on the importance of plant science research and future plant scientists:
“Everyone knows that we need doctors, and the idea that our best and brightest should go into medicine is embedded in our culture.  However, even more important than medical care is the ability to survive from day to day; this requires food, shelter, clothes, and energy, all of which depend on plants.

“Plant scientists are tackling many of the most important challenges facing humanity in the twenty-first century, including climate change, food security, and fossil fuel replacement.  Making the best possible progress will require exceptional people.  We need to radically change our culture so that ‘plant scientist’ (or, if we can rehabilitate the term, ‘botanist’) can join ‘doctor’, ‘vet’ and ‘lawyer’ in the list of top professions to which our most capable young people aspire.”

You can read the letter, published in the New Phytologist here.

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