Login

GPC Members Login
If you have any problems or have forgotten your login please contact [email protected]


Beech trees native to Scotland after all, scientists discover

Beech trees should be considered native to Scotland - despite a long-running debate over their national identity, researchers at the University of Stirling and Science and Advice for Scottish Agriculture (SASA) report.

The team examined the DNA of more than 800 beech trees at 42 locations across Great Britain and made direct comparisons with trees growing on mainland Europe.

The study - funded by the Natural Environment Research Council (NERC) - shows almost all of the beeches growing in Great Britain the researchers tested, are derived from native populations and, as a result, could not have been planted from abroad.

Professor Alistair Jump, of the University of Stirling's Centre for Environment, Heritage and Policy, said: "The beech tree has been experiencing an identity crisis in Scotland. Evidence shows that the European beech was mainly confined to the south-east of England after the last Ice Age. However, this tree now occurs throughout Scotland and has been considered 'not native' by many land managers.

"This tree can colonise ancient woodland in Scotland, and is sometimes removed because it poses a threat to the persistence of other native species. Our study shows that beech should be considered native throughout Great Britain, including Scotland."

Dr Jennifer Sjölund, of SASA, added: "The beech tree has been planted in Scotland in the past but the planting was from native British stock and, although humans have speeded its northward spread, it would have naturally spread up the length of the country regardless.

"Our findings have significant implications on how we define native species and how we consider natural processes when deciding what we base woodland management plans on. It points to a need to look again at the identity and distinctiveness of native Scottish forests, which historically haven't featured the beech tree."

Read the paper in Biogeography: Understanding the legacy of widespread population translocations on the post-glacial genetic structure of the European beech.

Article source: University of Stirling.

Image credit: University of Stirling

News

To protect stem cells, plants have diverse genetic backup plans

Despite evolution driving a wide variety of differences, many plants function the same way. Now a new study has revealed the different genetic strategies various flowering plant species use to achieve the same status quo.


Scientists crack the code to regenerate plant tissues

Plant regeneration can occur via formation of a mass of pluripotent cells. The process of acquisition of pluripotency involves silencing of genes to remove original tissue memory and priming for activation by external input. Led by Professor Sachihiro Matsunaga from Tokyo University of Science, a team of scientists have shown that plant regenerative capacity requires a certain demethylase that can prime gene expression in response to regenerative cues.


Pollen Genes Mutate Naturally in Only Some Strains of Corn

Pollen genes mutate naturally in only some strains of corn, according to Rutgers-led research that helps explain the genetic instability in certain strains and may lead to better breeding of corn and other crops.