An Anonymous Coward writes:
http://scienceline.org/2017/01/american-chestnut-tree-good-shot-making-comeback/
Once 25% of the forest in the American northeast, the American chestnut tree has been nearly wiped out by a fungal disease, which started about 100 years ago. The article has a number of interesting stories including a quote from Henry David Thoreau.
The American Chestnut Foundation http://www.acf.org/ has been selectively breeding to give fungal resistance for the last 30 years, but it's slow going. It takes 4-5 years before the seedlings flower and can be crossed again. They planted 150,000 resistant hybrids last year as an initial test. Going forward they plan to sequence some candidates to help select for further work.
In parallel, another group have identified a resistant gene in wheat and inserted it into a chestnut. While a faster process, it is recognized that a single GMO variety would have no diversity and would have problems in the wild. If this goes forward, the GMO is likely to be bred by traditional means against a wide variety of other chestnuts before being released.
For its part, the American Chestnut Foundation agrees that the best path forward is to combine the two approaches. "It's not an either-or [question], we need both," says Lisa Thomson, president and CEO of the Foundation.
...
Ultimately, the stakes are higher than just one species. Threatened by pests and foreign diseases, other classic North American trees such as ash, walnut and hemlock, might need help surviving into the next century. Successes with the chestnut tree could provide lessons that help conservationists save those trees as well, and perhaps ensure a diverse forest that can provide a habitat for living things, including people who enjoy hiking through woods more like those Thoreau walked through over 150 years ago.
(Score: 3, Informative) by HiThere on Tuesday February 14 2017, @08:29PM
You won't find corn growing wild. Unlike wheat it is dependent on people to spread it. (Squirrels and crows, etc., do a minor job, but not sufficient to maintain the species.) This is true even of Maize ... I think you need to get all the way back to teosinte before you get one that can maintain itself without humans...and that's not widely grown, so corn and it's ancestors would generally disappear.
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