scholarly journals First Report of Antifungal Properties of a New Strain of Streptomyces plicatus (Strain101) Against Four Iranian Phytopathogenic Isolates of Verticillium dahliae, A New Horizon in Biocontrol Agents

2003 ◽  
Vol 3 (1) ◽  
pp. 90-97 ◽  
Author(s):  
Aghighi S . ◽  
G.H. Shahidi Bonjar . ◽  
I. Saadoun .
Keyword(s):  
Verticillium Dahliae ◽  
Biocontrol Agents ◽  
First Report ◽  
Antifungal Properties ◽  
Streptomyces Plicatus

First report of Verticillium dahliae Kleb. causing wilt symptoms in canola (Brassica napus L.) in North America

2017 ◽  
Vol 39 (4) ◽  
pp. 514-526 ◽  
Author(s):  
Sheau-Fang Hwang ◽  
Stephen E. Strelkov ◽  
Hafiz U. Ahmed ◽  
Qixing Zhou ◽  
Heting Fu ◽  
...  
Keyword(s):  
Brassica Napus ◽  
North America ◽  
Verticillium Dahliae ◽  
Brassica Napus L ◽  
First Report ◽  
Verticillium Dahliae Kleb

scholarly journals First Report of Verticillium Wilt Caused by Verticillium dahliae Impacting Ailanthus altissima in Virginia, U.S.A.

Plant Disease ◽  
2020 ◽  
Vol 104 (5) ◽  
pp. 1558 ◽  
Author(s):  
R. K. Brooks ◽  
A. L. Snyder ◽  
E. A. Bush ◽  
S. M. Salom ◽  
A. Baudoin
Keyword(s):  
Verticillium Wilt ◽  
Verticillium Dahliae ◽  
Ailanthus Altissima ◽  
First Report

scholarly journals First Report of Occurrence of Eggplant Wilt Caused by Verticillium dahliae in Korea

Plant Disease ◽  
2000 ◽  
Vol 84 (10) ◽  
pp. 1152-1152
Author(s):  
S. K. Kim ◽  
S. S. Hong ◽  
K. W. Kim ◽  
E. W. Park
Keyword(s):  
Verticillium Dahliae ◽  
Solanum Melongena ◽  
Morphological Characteristics ◽  
Wilt Disease ◽  
Potato Dextrose Agar ◽  
First Report ◽  
Vascular Tissues ◽  
Fungal Isolates ◽  
Pathogenicity Tests ◽  
Root Cutting

A wilt disease occurred on greenhouse-grown eggplants (Solanum melongena L.) at Hanam and Yeojoo, Korea, in 1997. Lower leaves on the 2-month-old wilted eggplants exhibited gradual yellowing, interveinal necrosis, and marginal crinkling and dropped prematurely. Vascular tissues of diseased stems were discolored and turned black. Vertical sections of the stems revealed that the pith had been colonized by the fungus. The disease progressed from lower parts of the plants upward. Incidence of diseased eggplants in greenhouses was 5% on 23 May 1997. Although the incidence increased to 10% on 13 June, it remained constant through early July. Fungal isolates from discolored vascular tissues were initially whitish to cream color on potato-dextrose agar, which turned black due to the formation of microsclerotia. The fungus also produced abundant verticillate conidiophores with phialides and conidia. Based on these cultural and morphological characteristics, the fungus was identified as Verticillium dahliae Klebahn. Pathogenicity tests by root cutting, root dipping, or soil drenching resulted in similar symptoms observed in the naturally infected eggplants. Symptoms were first observed on lower leaves of each eggplant 3 weeks after inoculation. Isolation from symptomatic leaves of the inoculated eggplants yielded V. dahliae. This is the first report of occurrence of Verticillium wilt of eggplant in Korea.

scholarly journals First report of Verticillium dahliae causing verticillium wilt on Stevia rebaudiana in Europe

2019 ◽  
Vol 101 (4) ◽  
pp. 1291-1291 ◽  
Author(s):  
Daniele Da Lio ◽  
Luigi De Martino ◽  
Silvia Tavarini ◽  
Barbara Passera ◽  
Luciana Gabriella Angelini ◽  
...  
Keyword(s):  
Verticillium Wilt ◽  
Verticillium Dahliae ◽  
Stevia Rebaudiana ◽  
First Report

First report of Verticillium dahliae causing Verticillium wilt on kiwifruit in Ordu, Turkey

2019 ◽  
Vol 102 (1) ◽  
pp. 221-222 ◽  
Author(s):  
Muharrem Türkkan ◽  
Nusret Şahin ◽  
Göksel Özer ◽  
Zeynep Evgin ◽  
Mehmet Yaman ◽  
...  
Keyword(s):  
Verticillium Wilt ◽  
Verticillium Dahliae ◽  
First Report

scholarly journals Acyl Sucroses from Salpichroa Origanifolia

2008 ◽  
Vol 3 (4) ◽  
pp. 1934578X0800300
Author(s):  
Carmelo Dutra ◽  
María Verónica Cesio ◽  
Patrick Moyna ◽  
Horacio Heinzen
Keyword(s):  
Fatty Acids ◽  
Aspergillus Niger ◽  
Natural Product ◽  
Glandular Trichomes ◽  
Complex Mixture ◽  
Short Chain Fatty Acids ◽  
Short Chain ◽  
Sugar Esters ◽  
First Report ◽  
Antifungal Properties

The exudate of Salpichroa origanifolia (Solanaceae) foliar glandular trichomes has been characterized chemically. It was demonstrated to be a complex mixture of hexaesters of short chain fatty acids and sucrose. Of the total exudates, 80% was 1′,6′-diacetyl-2,3,4,6-tetra(3-methyl valerianyl)-sucrose, a new natural product, which showed antifungal properties against Aspergillus niger. It is the first report of sugar esters in the genus Salpichroa.

scholarly journals First report of Verticillium wilt on cultivated radish caused by Verticillium dahliae Kleb. in China

2019 ◽  
Vol 101 (3) ◽  
pp. 777-777
Author(s):  
Wenxue Yan ◽  
Baoju Li ◽  
Ali Chai ◽  
Yanxia Shi ◽  
Jianjun Shi ◽  
...  
Keyword(s):  
Verticillium Wilt ◽  
Verticillium Dahliae ◽  
First Report ◽  
Verticillium Dahliae Kleb

scholarly journals First Report of Verticillium Wilt Caused by Verticillium dahliae on Mango Trees (Mangifera indica) in Southern Spain

Plant Disease ◽  
2010 ◽  
Vol 94 (3) ◽  
pp. 380-380 ◽  
Author(s):  
L. Baeza-Montañez ◽  
R. Gómez-Cabrera ◽  
M. D. García-Pedrajas
Keyword(s):  
Verticillium Wilt ◽  
Verticillium Dahliae ◽  
Mangifera Indica ◽  
Southern Spain ◽  
Reference Sequence ◽  
Universal Primers ◽  
First Report ◽  
Wide Range ◽  
Race 1 ◽  
Disease Rating

Verticillium wilt, primarily caused by Verticillium dahliae Klebahn and V. albo-atrum Reinke & Berthold, affects a wide range of economically important crops. This disease is an increasing problem in areas where young mango trees are planted on land previously planted in vegetable crops. In 2008, symptoms of Verticillium wilt were observed in mango cvs. Kent and Osteen in the subtropical fruit-producing area of Málaga in southern Spain. In a new mango grove of cv. Kent, previously planted in potatoes and tomatoes, ~20% of 200 1-year-old trees had one-sided branch dieback. In many of these trees the symptoms expanded, leading to decline and eventual death. Cross sections of affected branches revealed brown vascular discoloration. Verticillium was isolated from surface-sterilized segments of symptomatic branches placed on acidic potato dextrose agar (PDA). Plates were incubated at 24°C. After 3 days, slow-growing colonies were transferred to PDA. Verticillium was similarly isolated from symptomatic potato plants grown in a nearby field. Identification of V. dahliae was initially based on morphology and further confirmed by molecular methods. All isolates tested produced microsclerotia, a defining feature that distinguishes V. dahliae from V. albo-atrum. For molecular characterization, V. dahliae specific primers 19 and 22 (1) and universal primers ITS1 and ITS4, which amplify the rRNA internal transcribed spacer (ITS) region (4), were used. Bands of expected size were amplified with both primer combinations. ITS fragments were sequenced and identical to the V. dahliae reference sequence (GenBank AY555948) (3). Pathogenicity assays were conducted with a selected isolate from mango using tomato plants from the susceptible line ‘Moneymaker’ and the near isogenic ‘Motabo’ line carrying the Ve gene conferring resistance to race 1 isolates. Five 1-month-old plants (four-leaf stage) were inoculated by root immersion in a suspension of 107 conidia/ml. Five control plants were mock inoculated with distilled water. As a positive control, five plants were inoculated with the previously described race 1 strain Dvd-T5 (2), which induces severe symptoms in susceptible tomato cultivars. Symptoms were scored visually at various time points up to 40 days by a 0 to 5 scale in which 0 = negligible chlorosis or wilting, 1 = chlorosis and wilting and/or curling in individual leaves, 2 = necrosis in leaves, 3 = at least one branch dead, 4 = wilt and/or chlorosis in upper leaves and/or two or more branches dead, and 5 = plant dead or all leaves and most of stem necrotic. The isolate from mango caused typical Verticillium wilt symptoms with a mean disease rating of 3.6 at 40 days postinoculation in both lines. The mean disease rating for Dvd-T5 in Moneymaker 40 days postinoculation was 4.0. V. dahliae was reisolated from symptomatic plants but not from noninoculated controls. To our knowledge, this is the first report of Verticillium wilt on mango in Spain. More problems with Verticillium wilt are expected because of the increasing planting of mango in fields previously dedicated to horticultural crops. References: (1) J. H. Carder et al. Modern Assays for Plant Pathogenic Fungi: Identification, Detection and Quantification. CAB International, Oxford, 1994. (2) K. F. Dobinson et al. Can. J. Plant. Pathol. 18:55, 1996. (3) M. P. Pantou et al. Mycol. Res. 109:889, 2005. (4) T. J. White et al. PCR Protocols: A Guide to Methods and Amplification. Academic Press, San Diego, 1990.

scholarly journals First Report of Verticillium dahliae Causing Artichoke Wilt in California

Plant Disease ◽  
1999 ◽  
Vol 83 (8) ◽  
pp. 782-782 ◽  
Author(s):  
R. G. Bhat ◽  
K. V. Subbarao ◽  
M. A. Bari
Keyword(s):  
Verticillium Wilt ◽  
Verticillium Dahliae ◽  
Infected Plant ◽  
Potato Dextrose Agar ◽  
The Other ◽  
Central Coast ◽  
Cynara Scolymus ◽  
First Report ◽  
Vascular Discoloration ◽  
Infested Field

In mid-August 1998, artichoke (Cynara scolymus L.) plants of cultivar Imperial Star in a field in the Salinas area of the central coast of California developed wilt symptoms. The plants were stunted with chlorotic, drooping, and dried leaves near the bottom and middle of the plants as previously described in Italy (1). Diseased plants produced smaller edible buds and, in severe cases, buds were discolored with dried outer bracts. Roots exhibited the characteristic vascular discoloration of Verticillium infection. In one part of the infested field, artichoke was near harvest with 85% of plants showing wilt symptoms with vascular discoloration whereas the other part had a 60-day-old crop with 98% of plants infected. Yield in the field was reduced by as much as 50%. Verticillium dahliae was isolated from infected plant samples on NP-10 medium (2), and isolates were single spored before storing on potato dextrose agar at 4°C. Identity of the pathogen was confirmed based on colony morphology and formation of microsclerotia. In root-dip inoculation tests in the greenhouse, two V. dahliae isolates from artichoke infected 1-month-old artichoke seedlings that wilted within 6 weeks of inoculation. V. dahliae was reisolated from plants showing vascular discoloration. Cross-inoculation studies revealed that artichoke isolates caused a moderate level of disease in lettuce, but only a trace of vascular discoloration in cauliflower. Lettuce isolates caused a severe wilt in artichoke. Cauliflower isolates did not cause wilt in lettuce and caused only slight vascular discoloration in artichoke. This is the first report of a Verticillium wilt of artichoke in California. References: (1) M. Cirulli et al. Plant Dis. 78:680, 1994. (2) L. H. Sorensen et al. Phytopathology 81:1347, 1991.

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