Cyperus rotundus L. a new host species for \u2018Candidatus Phytoplasma aurantifolia\u2019-related phytoplasmas in Cuba.

The identification of phytoplasmas in asymptomatic plants of Cyperus rotundus growing in common bean crops cultivated in Cuba is reported and the potential risk of infection to cultivated species is discussed. The detected phytoplasmas belong to ribosomal group 16SrII, as confirmed by homology on part of the 16S rDNA sequence obtained after sequencing amplicons obtained in nested-PCR assays. This is the first report of the presence of 16SrII phytoplasmas in C. rotundus; further studies are necessary to assess the epidemiologic aspects of this finding in Cuban horticultural cultivations especially in common beans

Chemical solution deposition: a path towards low cost coated conductors

Abstract The achievement of low cost deposition techniques for high critical current YBa 2 Cu 3 O 7 coated conductors is one of the major objectives to achieve a widespread use of superconductivity in power applications. Chemical solution deposition techniques are appearing as a very promising methodology to achieve epitaxial oxide thin films at a low cost, so an intense effort is being carried out to develop routes for all chemical coated conductor tapes. In this work recent achievements will be presented towards the goal of combining the deposition of different type of buffer layers on metallic substrates based on metal-organic decomposition with the growth of YBa 2 Cu 3 O 7 layers using the trifluoroacetate route. The influence of processing parameters on the microstructure and superconducting properties will be stressed. High critical currents are demonstrated in 'all chemical' multilayers