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Article
First lasing and operation of an ångstrom-wavelength free-electron laser
The recently commissioned Linac Coherent Light Source is an X-ray free-electron laser at the SLAC National Accelerator Laboratory. It produces coherent soft and hard X-rays with peak brightness nearly ten orde...
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Article
A reverse genetic approach for generating gene replacement mutants in Ustilago maydis
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Article
A reverse genetic approach for generating gene replacement mutants in Ustilago maydis
We describe a versatile strategy for generating gene replacement mutants in the phytopathogenic fungus Ustilago maydis. The system includes the choice of 32 different insertion cassettes for genetic engineering p...
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Article
Heterologous transposition in Ustilago maydis
The phytopathogenic basidiomycete Ustilago maydis has become a model system for the analysis of plant-pathogen interactions. The genome sequence of this organism will soon be available, increasing the need for t...
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Article
Stabilisation of divalent rare earth elements in natural fluorite
¶The occurrence of divalent rare earth elements (Sm2+, Yb2+, Tm2+, and Ho2+) in natural fluorite is evaluated using a suite of 37 samples deriving mainly from Sn–W deposits in the Erzgebirge (Germany), Central Ka...