Programa de Pos graduacao em Biotecnologia Vegetal

Rio de Janeiro, Brazil

Programa de Pos graduacao em Biotecnologia Vegetal

Rio de Janeiro, Brazil
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De A. Ribeiro J.R.,Federal Rural University of Rio de Janeiro | De A. Ribeiro J.R.,Institute Microbiologia Prof Paulo Of Goes | De Carvalho P.M.B.,Programa de Pos Graduacao em Biotecnologia Vegetal | De Carvalho P.M.B.,Institute Microbiologia Prof Paulo Of Goes | And 9 more authors.
Antonie van Leeuwenhoek, International Journal of General and Molecular Microbiology | Year: 2011

A novel yeast species within the Metschnikowiaceae is described based on a strain from the sugarcane (Saccharum sp.) rhizoplane of an organically managed farm in Rio de Janeiro, Brazil. The D1/D2 domain of the large subunit ribosomal RNA gene sequence analysis showed that the closest related species were Candida tsuchiyae with 86.2% and Candida thailandica with 86.7% of sequence identity. All three are anamorphs in the Clavispora opuntiae clade. The name Candida middelhoveniana sp. nov. is proposed to accommodate this highly divergent organism with the type strain Instituto de Microbiologia, Universidade Federal do Rio de Janeiro (IMUFRJ) 51965 T (=Centraalbureau voor Schimmelcultures (CBS) 12306 T, Universidade Federal de Minas Gerais (UFMG)-70 T, DBVPG 8031 T) and the GenBank/EMBL/DDBJ accession number for the D1/D2 domain LSU rDNA sequence is FN428871. The Mycobank deposit number is MB 519801. © 2011 Springer Science+Business Media B.V.


Leal-Costa M.V.,Federal University of Rio de Janeiro | Munhoz M.,Programa de Pos graduacao em Biotecnologia Vegetal | Filho P.E.M.,Embrapa Mandioca e Fruticultura Tropical | Reinert F.,Federal University of Rio de Janeiro | Tavares E.S.,Federal University of Rio de Janeiro
Acta Botanica Brasilica | Year: 2010

Papaya, Carica papaya L. (Caricaceae), is an American species, consumed worldwide. A major limitation to papaya production is attack by viruses, like the papaya ringspot virus (PRSV). Papaya has been genetically modified to increase its resistance to PRSV. The aim of this research was to compare the leaf anatomy of wild-type and genetically modifi ed (GM) C. papaya plants to evaluate the influence of genetic modification on leaf anatomy. Wild-type and GM plants showed petiole with endodermis and pericycle fibers. The leaves are hypostomatic and dorsiventral, with laticifers along vascular system and abundant druses of calcium oxalate. The epidermis was glabrous and presented anomocytic and anisocytic stomata, straight anticlinal walls on the adaxial face and sinuous on the abaxial face. Anatomical differences between wild-type and GM C. papaya leaves were not observed. These data contribute to risk assessments regarding the anatomical conformity of GM plants.

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