LIFE TABLE ANALYSIS OF DIAPHORINA CITRI (HEMIPTERA: PSYLLIDAE) INFESTING SWEET ORANGE (CITRUS SINENSIS) IN SAO PAULO

An ecological life table for eggs and nymphs of Diaphorina citri Kuwayama (Hemiptera: Psyllidae) was constructed with data obtained from orange orchards (Citrus sinensis Osbeck) in 2 regions of the State of Sao Paulo, over 4 generations in the period from XI-2006 to V-2007, comprising spring, summer, and fall seasons. Young growing shoots with D. citri eggs present were identified, and live individuals were counted until adult emergence. No predatory arthropods were observed in association with D. citri eggs and nymphs during the study. The mean parasitism of fourth- and fifth-instar nymphs by Tamarixia radiata Waterston (Hymenoptera: Eulophidae) was 2.3%. The durations of the egg-adult period were similar among the 4 generations, ranging from 18.0 to 24.7 d (at mean temperatures ranging from 21.6 to 26.0 degrees C) and followed the temperature requirement models obtained in the laboratory for D. citri. However, survival from the egg to the adult stage for the same period varied considerably from 1.7 to 21.4%; the highest mortalities were observed in the egg and small nymphal (first- to thirdinstar) stages, which were considered to be key phases for population growth of the pest.

Genetic transformation of Citrus sinensis with Citrus tristeza virus (CTV) derived sequences and reaction of transgenic lines to CTV infection

Transgenic Citrus sinensis (L.) Osb. plants, cvs. Valencia and Hamlin, expressing Citrus tristeza virus (CTV) derived sequences were obtained by genetic transformation. The gene constructs were pCTV-CP containing the 25 kDa major capsid protein gene (CTV-CP), pCTV-dsCP containing the same CTV-CP gene in an intron-spliced hairpin construct, and pCTV-CS containing a 559 nt conserved region of the CTV genome. The transgenic lines were identified by PCR and the transgene integration was confirmed by Southern blot. Transgene mRNA could be detected in most transgenic lines containing pCTV-CP or pCTV-CS transgene. The mRNA of pCTV-dsCP transgene was almost undetectable, with very light bands in most analyzed plants. The transgene transcription appears to be closely linked to the type of gene construct. The virus challenge assays reveals that all transgenic lines were infected. However, it was possible to identify propagated clones of transgenic plants of both cultivars studied with a low virus titer, with values similar to the non-inoculated plants (negative control). These results suggested that the transgenic plants present some level of resistance to virus replication. The higher number of clones with low virus titer and where mRNA could not be detected or was presented in a very light band was found for pCTV-dsCP-derived transgenic lines.

Streptococcus sinensis endocarditis outside Hong Kong

Streptococcus sinensis has been described as a causative organism for infective endocarditis in 3 Chinese patients from Hong Kong. We describe a closely related strain in an Italian patient with chronic rheumatic heart disease. The case illustrates that S. sinensis is a worldwide emerging pathogen.

Introductio utilissima, Hebraice discere cupientibus : cum latiori emendatione Iohãnis Boeschenstain. Oratio dominica Angelica salutatio Salue regina. Hebraice. Matthaeo Adriano Equite Aurato interprete.

Text lat. u. hebr.

Ueber Wistaria chinensis D. C. (Glycine sinensis Bol. May)

Von Juwelier M. Hermann

Angelica Catalani, Brustbild

Signatur des Originals: S 36/F00269

Angelica Catalani, Rollenbild, Brustbild

Signatur des Originals: S 36/G00015

Angelica Catalani, Hüftbild

Signatur des Originals: S 36/G00588

Angelica Catalani, Brustbild

Signatur des Originals: S 36/G00589

Angelica Catalani, Brustbild

Signatur des Originals: S 36/G00590

François Joseph Talma, Angelica Catalani, Vivant Denon, François-René de Chateaubriand, Félicien David, Brustbild, Gruppenbildnis

Signatur des Originals: S 36/G02355

François Joseph Talma, Angelica Catalani, Vivant Denon, François-René de Chateaubriand, Félicien David, Brustbild, Gruppenbildnis

Signatur des Originals: S 36/G02570

Angelica Catalani, Hüftbild

Signatur des Originals: S 36/G02873