ANJOS, R. M.

BARGUIL, B. M.

CARDOSO, J. E.

VIANA, F. M. P.

English

Repository Open Access to Scientific Information from Embrapa

Plant Disease - 93(7):766 - Abstract Welcome Guest user Sign in | Register    Journals Home APSnet IS-MPMInet My Profile Help Subscribe Search   Advanced Search ISSN: 0191-2917 SEARCH ●      ●     Phytopathology ●     Plant Disease ●     MPMI ●       ●          ●       Advanced Search Inside the Journal   BACK ISSUES  (Issues before 1997)   ●     View Most Downloaded Articles  ●     About Plant Disease  ●     Editorial Board  ●     Submit a Manuscript  ●     Author Instructions  ●     Policies/Procedures  ●     Online e-Xtras  ●      = "Open" Access     Editor-in-Chief: Anthony P. Keinath  Published by The American Phytopathological Society  Home >  Plant Disease  >  Table of Contents  > AbstractPrevious Article  | Next Article July 2009, Volume 93, Number 7 Page 766 DOI: 10.1094/PDIS-93-7-0766ADisease Notes First Report of Dry Rot Caused by Fusarium oxysporum on Rose (Rosa spp.) in BrazilB. M. Barguil, F. M. P. Viana, R. M. Anjos, and J. E. Cardoso, Embrapa Agroindústria Tropical, Caixa Postal 3761, CEP 60511-110, Fortaleza, CE, Brazil Roses are a high-value niche crop in the higher altitudes of northeastern Brazil. From July of 2007 and throughout 2008, severe stem rot and wilting of rose seedlings were observed in commercial fields in the São Benedito District, Ceará State, Brazil. Although economic losses due to the disease are unknown, it poses a threat to the growing rose industry in that region. Symptoms included leaf yellowing and abscission followed by plant collapse. Symptoms appeared earlier when grafted seedlings were produced during periods of high relative humidity (80 to 98%) and warm temperatures (20 to 31°C). In the laboratory, symptomatic seedlings were rinsed with distilled water, surface sterilized with 0.5% NaOCl, and incubated on PDA at 26 ± 2°C. Fusarium oxysporum was consistently isolated from infected scions and rootstocks. Identification of F. oxysporum was based on colony and conidia morphology obtained from single-spore colonies. Five 4-week-old rose (‘Carola’) seedlings were inoculated with a culture of fungus by spraying the needle-wounded scion with a spore suspension (1 × 105 CFU/ml). The spore suspension was obtained from a 1-week-old PDA culture incubated at 26 ± 2°C. Control seedlings were sprayed with sterile water. Inoculated seedlings were incubated for the first 48 h in a saturated humidity chamber. After 20 days at room temperature, the scion tissue of inoculated seedlings turned necrotic. Two symptomatic seedlings were placed in a saturated humidity chamber for 24 h to determine if fungal sporulation could be observed on the surface of the tissue. After 5 to 7 days, a white mycelium was observed over the necrotic tissue. Seedlings sprayed with sterile water remained symptomless. F. oxysporum was reisolated from symptomatic tissue. An isolate of F. oxyporum (No. 1484) was deposited in the Mycology Collection of Lavras (Minas Gerais State, Brazil). To our knowledge, this is the first report Quick Links ●     Add to favorites ●     E-mail to a colleague ●     Alert me when new articles cite this article ●     Download to citation manager ●     Related articles  found in APS Journals  http://apsjournals.apsnet.org/doi/abs/10.1094/PDIS-93-7-0766A (1 of 2)10/12/2009 15:55:22Plant Disease - 93(7):766 - Abstractof F. oxysporum causing a disease on rose seedlings in Brazil.Journals Home APSnet IS-MPMInet Contact Us Privacy Copyright The American Phytopathological Society http://apsjournals.apsnet.org/doi/abs/10.1094/PDIS-93-7-0766A (2 of 2)10/12/2009 15:55:22Plant Disease - 93(7):766 - Supplemental Material Welcome Guest user Sign in | Register    Journals Home APSnet IS-MPMInet My Profile Help Subscribe Search   Advanced Search ISSN: 0191-2917 SEARCH ●      ●     Phytopathology ●     Plant Disease ●     MPMI ●       ●          ●       Advanced Search Inside the Journal   BACK ISSUES  (Issues before 1997)   ●     View Most Downloaded Articles  ●     About Plant Disease  ●     Editorial Board  ●     Submit a Manuscript  ●     Author Instructions  ●     Policies/Procedures  ●     Online e-Xtras  ●      = "Open" Access     Editor-in-Chief: Anthony P. Keinath  Published by The American Phytopathological Society  Home >  Plant Disease  >  Table of Contents  > Supplemental MaterialPrevious Article  | Next Article July 2009, Volume 93, Number 7 Page 766 DOI: 10.1094/PDIS-93-7-0766ASupplemental Material Rose seedlings showing typical symptoms and signs of Fusarium oxysporum infection on scion and scion-rootstock. A, Details of wilting of twig, scion, and scion-rootstock symptoms (arrows). B, F. oxysporum mycelium and sporulation structures (arrows).Quick Links ●     Add to favorites ●     E-mail to a colleague ●     Alert me when new articles cite this article ●     Download to citation manager ●     Related articles  found in APS Journals  Journals Home APSnet IS-MPMInet Contact Us Privacy Copyright The American Phytopathological Society http://apsjournals.apsnet.org/doi/suppl/10.1094/PDIS-93-7-0766A (1 of 2)10/12/2009 16:00:26Plant Disease - 93(7):766 - Supplemental Materialhttp://apsjournals.apsnet.org/doi/suppl/10.1094/PDIS-93-7-0766A (2 of 2)10/12/2009 16:00:26

First report of dry rot caused by Fusarium oxysporum on rose (Rosa spp.) in Brazil.

http://www.alice.cnptia.embrapa.br/bitstream/doc/631748/1/AT09086.pdf

First report of dry rot caused by Fusarium oxysporum on rose (Rosa spp.) in Brazil.

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