The pointless, self-defeating burning of ash trees could have been avoided

If it hadn't been for a name-related confusion, the government might have imposed a ban on imports of ash and ash products years ago.

What’s in a name? Ash fungus by any other name would have burned as sweet in the recent bonfires. But the name does make a difference. Had it not been for name-related confusion, the government might have imposed a ban on imports of ash and ash products years ago. Then the pointless, self-defeating burning could have been avoided.

EU rules prohibit a ban on imports of a species if the threatening pathogen is already endemic. The ash fungus is widely reported as being Chalara fraxinea. This is widespread in the UK, and benign: no ban was possible. However, many fungi exist in two forms, one that reproduces sexually, and one that reproduces asexually. In 2009, researchers suggested that the pathogen was in fact Hymenoscyphus albidus, a sexually reproducing version of Chalara fraxinea. A ban, then, was still impossible. But last year Swiss researchers showed the pathogen to be a different organism that they named Hymenoscyphus pseudo-albidus. That could have been banned.

Things could get worse. A decision taken at the International Botanical Congress in Melbourne last year means that mycologists – those who study fungi – will no longer be allowed to give separate names to the sexually and asexually reproducing variants of a species. Ironically, the idea is to limit confusion. With all the evolving variations of our forest pathogens, it’s likely to cause more problems than it solves.

Evolution is fearsome to behold. We’ve been watching it in our hospitals for years – it is what gave us our antibiotic-resistant superbugs. Put a wide variety of bacteria together in a confined space with plenty of very habitable niches and they will indulge in an orgy of gene-swapping. This creates new strains, many of which are resistant to all known toxins.

Ash dieback is another example of an evolved pathogen. It arose in Poland in 1992. There is nothing we can do about it except let the naturally resistant trees emerge as winners in the evolutionary arms race. It’s impossible to tell which trees will survive without carrying out a genetic analysis; that’s why burning swaths of ash trees is self-defeating.

In truth, the issue over naming the fungus is probably a convenient scapegoat. Researchers were advising an import ban years before anyone looked into whether the fungus was of an endemic species. Somehow, no one wanted to react to the threat, and it’s not just the UK’s researchers who didn’t want to see the coming evil: Danish experts pointed out an impending problem to the Swedes, and they did nothing either.

Import duty

What we can do now to safeguard the future of our forests is reduce the demand for imported plants. Read the scientific literature on plant pathogens, and you find that experts are issuing 13 times as many alerts on new plant-infecting fungi as they were in 1995. The ash fungus may be one of the relatively few natural mutations that have occurred in recent times: most of them are triggered by human activities. Plant pathologists put the blame squarely on the taste for imported plants.

Our craving for exotic plants and ready-grown trees for our gardens and public spaces has moved plants and their pathogens around the world in unprecedented numbers. In new environments, the pathogens swap genes and evolve into forms for which native species have no resistance.

The surging global trade in plants is essentially a huge microbiology experiment that is destroying the world’s forests. But perhaps we think that interesting suburban gardens are worth it?

Michael Brooks’s “The Secret Anarchy of Science” is published by Profile Books (£8.99)

 

Ash trees in Pound Farm Woodland, where many have been identified as having Ash Dieback Disease. Photograph: Getty Images

Michael Brooks holds a PhD in quantum physics. He writes a weekly science column for the New Statesman, and his most recent book is At the Edge of Uncertainty: 11 Discoveries Taking Science by Surprise.

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Peculiar Ground by Lucy Hughes-Hallett asks how we shape history and how much is beyond our control

In Wychwood, a great house in Oxfordshire, the wealthy build walls around themselves to keep out ugliness, poverty, political change. Or at least they try to. 

The great cutting heads of the Crossrail tunnel-boring machines were engines of the future drilling into the past. The whole railway project entailed a crawl back into history as archaeologists worked hand in hand with engineers, preserving – as far as possible – the ancient treasures they discovered along the way. One of the most striking finds, relics of which are now on display at the Museum of London Docklands, was a batch of skeletons, unearthed near Liverpool Street Station, in which the bacteria responsible for the Great Plague of 1665 were identified for the first time. Past and present are never truly separable.

Lucy Hughes-Hallett’s ambitious first novel ends in 1665 in the aftermath of that plague, and it, too, dances between past and present, history and modernity. Like those skeletons buried for centuries beneath Bishopsgate, it is rooted in the ground. The eponymous “peculiar ground” is Wychwood, a great house in Oxfordshire, a place where the wealthy can build walls around themselves to keep out ugliness, poverty, political change. Or at least that is what they believe they can do; it doesn’t spoil the intricacies of this novel to say that, in the end, they will not succeed.

It is a timely idea. No doubt Hughes-Hallett was working on her novel long before a certain presidential candidate announced that he would build a great wall, but this present-day undiplomatic reality can never be far from the reader’s mind, and nor will the questions of Britain’s connection to or breakage with our European neighbours. Hughes-Hallett’s last book, a biography of Gabriele d’Annunzio, “the John the Baptist of fascism”, won a slew of awards when it was published four years ago and demonstrated the author’s skill in weaving together the forces of culture and politics.

Peculiar Ground does not confine itself to a single wall. Like Tom Stoppard’s classic play Arcadia, it sets up a communication between centuries in the grounds at Wychwood. In the 17th century, John Norris is a landscape-maker, transforming natural countryside into artifice on behalf of the Earl of Woldingham, who has returned home from the depredations of the English Civil War. In the 20th century a new cast of characters inhabits Wychwood, but there are powerful resonances of the past in this place, not least because those who look after the estate – foresters, gardeners, overseers – appear to be essentially the same people. It is a kind of manifestation of what has been called the Stone Tape theory, after a 1972 television play by Nigel Kneale in which places carry an ineradicable echo of their history, causing ghostly lives to manifest themselves through the years.

But the new story in Peculiar Ground broadens, heading over to Germany as it is divided between East and West in 1961, and again as that division falls away in 1989. Characters’ lives cannot be divorced from their historical context. The English breakage of the civil war echoes through Europe’s fractures during the Cold War. The novel asks how much human actors shape history and how much is beyond their control.

At times these larger questions can overwhelm the narrative. As the book progresses we dance between a succession of many voices, and there are moments when their individual stories are less compelling than the political or historical situations that surround them. But perhaps that is the point. Nell, the daughter of the land agent who manages Wychwood in the 20th century, grows up to work in prison reform and ­observes those who live in confinement. “An enclosed community is toxic,” she says. “It festers. It stagnates. The wrong people thrive there. The sort of people who actually like being walled in.”

The inhabitants of this peculiar ground cannot see what is coming. The novel’s modern chapters end before the 21st century, but the future is foreshadowed in the person of Selim Malik, who finds himself hiding out at Wychwood in 1989 after he becomes involved in the publication of an unnamed author’s notorious book. “The story you’re all so worked up about is over,” he says to a journalist writing about the supposed end of the Cold War. “The story I’m part of is the one you need to think about.”

A little heavy handed, maybe – but we know Selim is right. No doubt, however, Wychwood will endure. The landscape of this novel – its grounds and waters and walls – is magically and movingly evoked, and remains in the imagination long after the reader passes beyond its gates. 

Erica Wagner’s “Chief Engineer: the Man Who Built the Brooklyn Bridge” is published by Bloomsbury

Erica Wagner is a New Statesman contributing writer and a judge of the 2014 Man Booker Prize. A former literary editor of the Times, her books include Ariel's Gift: Ted Hughes, Sylvia Plath and the Story of “Birthday Letters” and Seizure.

This article first appeared in the 25 May 2017 issue of the New Statesman, Why Islamic State targets Britain

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