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First report of Nigrospora sphaerica causing leaf spots on Celtis australis from Himachal Pradesh, India

100%

Gautam A. K.

International Letters of Natural Sciences

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2015

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tom 40

Nigrospora sphaerica collected on living leaves of Celtis australis L. (Cannabaceae) from Himachal Pradesh, India is a new host record. Symptoms of the disease on leaves appeared in the form of small, circular to irregular, brown - coloured spots surrounded by a yellow zone. The fungus isolated was identified as Nigrospora sphaerica (Sacc.) E.W. Mason, on the basis of cultural and morphological characters. The fungus is described and illustrated.

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Activities of nitrogen metabolism-related enzymes in cucumber leaves infected with Pseudomonas syringae pv.lachrymans

84%

Gajewska E., Kuzniak E., Naliwajski M., Sapinska S., Wielanek M., Sklodowska M.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

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2013

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tom 94

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nr 3

3

Involvement of salicylic acid in defense response of BTH- and arbutin-treated Cucumis sativus against Pseudomonas syringe pv. lachrymans

84%

Wielanek M., Gajewska E., Wagner M., Kuzniak E., Sklodowska M.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

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2013

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tom 94

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nr 3

4

Characterization of Phyllosticta hostae causing Phyllosticta leaf spot on spider lily in China

84%

Yi R. H., Gan L. J., Chen J., Xu X. L.

Journal of Plant Protection Research

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2015

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tom 55

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nr 4

Leaf spot disease on the spider lily [Hymenocallis littoralis (Jacq.) Salisb.] continues to cause serious problems in China. To confirm the pathogen, the pathogenicity of isolates from diseased leaves was tested according to Koch’s postulates. The isolates were tentatively identified using morphological characteristics and confirmation was done by phylogenetic analysis of the translation elongation factor 1-alpha gene (TEF1), the actin gene (ACT), and internal transcibed spacer (ITS) sequences using neighbor-joining (NJ), maximum parsimony (MP), and Bayesian inference (BI) methods. The pathogen was identified as Phyllosticta hostae. Molecular analysis indicated very little diversity in the TEF1, ACT, and ITS gene. This is the first report of P. hostae causing leaf spot disease on spider lily in China.

5

Fenton reagent and titanium dioxide nanoparticles as antifungal agents to control leaf spot of sugar beet under field conditions

84%

Hamza A., El-Mogazy S., Derbalah A.

Journal of Plant Protection Research

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2016

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tom 56

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nr 3

In this study, foliar sprays of Fenton solutions (Fenton reaction, Fenton-like reaction and Fenton complex), titanium dioxide (TiO2) and the recommended fungicide (chlorothalonil) were estimated in the control of sugar beet leaf spot caused by Cercospora beticola under field conditions in two growing seasons. In addition, the impacts of these treatments on some crop characters (leaf dry weight, root fresh weight, soluble solid content, sucrose content and purity of sugar) were examined. Biochemical and histological changes in the livers and kidneys of treated rats compared to an untreated control were utilized to assess the toxicity of the examined curative agents. Overall, chlorothalonil and Fenton complex were the most effective treatments for disease suppression in both tested seasons followed by Fenton-like reagent, Fenton’s reagent and TiO2, respectively. Growth and yield characters of treated sugar beet significantly increased in comparison to an untreated control. There were mild or no (biochemical and histological) changes in the livers and kidneys of treated rats compared to the control. Fenton solutions and TiO2 may offer a new alternative for leaf spot control in sugar beet.

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The influence of BTH and arbutin on PAL activity and phenolic compounds content in cucumber leaves infected with Pseudomonas syringae pv. lachrymans

84%

Sklodowska M., Wielanek M., Gajewska E., Kuzniak E.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

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2013

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tom 94

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nr 3

7

Activity of laminarin in control of strawberry diseases

84%

Meszka B., Bielenin A.

Phytopathologia

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2011

|

tom 62

8

Characteristics of wheat leaf diseases development in Latvia

84%

Bankina B., Priekule I.

Acta Agrobotanica

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2005

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tom 58

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nr 2

329-334

The field observations were carried out in 1999-2004 on 29 fields in Latvia. Incidence and severities of wheat leaf diseases were determined. Tan pot caused by Drechslera tritici-repentis and Septoria leaf blotch, induced by Septoria tritici were the most harmful diseases at the time of research (incidence 10-100% and 1-100%, respectively). Also the incidence of powdery mildew, caused by Blomeria graminis was high (4-100%), while that of rusts (Puccinia tritici and P. striiformis) was very low. Changes in disease epidemics were determined and showed the differences between the analyzed diseases.

9

Resistance stability to leaf diseases of sour cherry varieties in Lithuania

84%

Gelvonauskiene D., Stanys V., Staniene G.

Journal of Fruit and Ornamental Plant Research

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2004

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tom 12

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nr Spec.ed.2

10

Effect of propiconazole [Tilt 250 EC] and Drechslera poae on germination capacity of Kentucky bluegrass

84%

Czembor E.

Plant Breeding and Seed Science

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2005

|

tom 52

11

Occurrence and control of Rhizoctonia rot on Ficus pumila

84%

Orlikowski L. B., Skrzypczak C.

Phytopathologia Polonica

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1995

|

tom 09

12

Fungi isolated from leaves of different Iris spp.

84%

Wagner A.

Roczniki Akademii Rolniczej w Poznaniu. Ogrodnictwo

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2000

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tom 30

13

Susceptibility of Festuca rubra L. ssp. commutata and rubra to infestation by fungal pathogens under conditions of fungicidal protection

67%

Panka D., Jeske M., Szczepanek M.

Acta Scientiarum Polonorum. Agricultura

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2009

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tom 08

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nr 4

The aim of this study was to estimate the susceptibility of a tuft (ssp. commutata – cultivar Mirena) and creeping (ssp. rubra – cultivar Nista) forms of Festuca rubra to infestation by pathogenic fungi and the effect of chemical protection on the health of plants grown for seeds. The study was conducted in 2004-2006 (first series) and in 2005-2007 (second series) at the Experimental Variety Testing Station in Chrząstowo (53°09’ N; 17°35’ E). Fungicides containing azoxystrobin, prochloraz and propiconazole were applied for protection against fungal pathogens. The assessment of disease symptom intensity was conducted in the summer and autumn periods based on modified scales by Birckenstaedt et al. [1994]. In the establisment and production years we found a moderate infestation of red fescue of the cultivars Mirena and Nista by pathogenic fungi. Highest values of leaf disease index at a level of DI = 16.9% were registered in the case of leaf spots. Occurrence of rust and powdery mildew stayed at a lower level. Presence of Microdochium nivale was registered sporadically. Higher susceptibility of the creeping cultivar Nista to infestation by fungi causing leaf spots and powdery mildew was observed. In the vast majority of cases applying chemical protection significantly decreased a degree of plant infestation in the summer period.

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Epidemiology of Cercospora leaf spot of sugar beet in central Poland

67%

Piszczek J.

Phytopathologia

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2011

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tom 62

15

Variation in leaf infection of winter wheat cultivars by fungi of genus Septoria in relation to environmental conditions

67%

Zalewski D., Weber R., Kaczmarek J.

Polish Journal of Natural Sciences

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2009

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tom 24

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nr 1

23-34

The study, covering analysis of the variation in the intensity of septoria leaf spot, made use of the results obtained in Post-registration Variety Testing experiments carried out in Lower Silesia. Of these experiments, eight locations characterized by diverse soil conditions were selected. The analysis regarded a three-year period of cultivation, spanning 2004–2006, of eleven winter wheat cultivars. The experiments were conducted in the standard variant (a₁) and the intensive (a₂), the latter differing in nitrogen fertilization higher by 40 kg ha⁻¹, full chemical protection against fungal diseases, use of a growth regulator and foliar feeding of the plants with multi-nutrient preparation. The analysis performed has revealed significant interaction of the cultivars with the environment, which points out to varied reaction of the wheat genotypes to atmospheric and edaphic conditions in particular years of the study. The high values of the genotype-environment interaction obtained for the locations of Kobierzyce, Tarnów, Pawłowice and Krościna indicate that in the area of Lower Silesia these experimental sites are distinguishable by increased danger that the plants may be highly infected by populations of fungi representing the genus Septoria. The fact that the number of cultivars analyzed in Post-registration Variety Testing trials each year is different, the evaluations of the interaction between the genotypes and the environments may not be absolutely reliable. Therefore, the number of experimental sites of variable edaphic-climatic conditions which is taken under analysis should be large enough. The significant differences in the level of infection of particular genotypes obtained for some locations indicate the necessity to evaluate of new cultivars in numerous environments considering the genotype-environment interaction and the danger of occurrence of new races of fungi characterized by increased aggressiveness.

16

Potential use of Olejan 85 EC for protecting some species of ornamental plants against diseases

67%

Wojdyla A. T.

Journal of Plant Protection Research

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2010

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tom 50

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nr 2

164-171

The object of the studies was to assess the effectiveness of the product Olejan 85 EC (85% rapeseed oil) against the disease casual agents of powdery mildew, rust, leaf spot and grey mould. Depending on a casual agent, Olejan 85 EC at the concentration of 1% was used for 2-6 spraying treatments at 7-day intervals. The results of performed experiments revealed that Olejan 85 EC used as a curative spraying treatment on rose and pansy plants significantly reduced the development of powdery mildew. After 4 treatments, it caused a 3.3-fold reduction to complete inhibition of Sphaerotheca pannosa var. rosae development on roses. In the case of pansy plants, it caused a complete inhibition of the development of the fungus S. humuli. The preparation Olejan 85 EC applied curatively against leaf spot, significantly inhibited the development of this disease on rose and pansy. After 6 spray treatments, the product caused at least a 1.9-fold reduction in the development of Diplocarpon rosae on rose. On pansy plants, after 4 applications, it caused a 3.1-to-4-fold reduction in the development of Colletotrichum spp. Olejan 85 EC applied as a curative spraying treatment on chrysanthemum and willow inhibited the development of rust. After 4 applications on chrysanthemum, the product caused at least a 2-fold reduction in the development of Puccinia horiana, with 58% of brown and malformed telia. In the protection of willow, after 2 applications, Olejan 85 EC caused at least a 2.3-fold reduction in the development of Melampsora epitea, and from 32 to 75% of the uredinia turned brown and malformed.

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Resistance to abiotic and biotic stressors in sweet cherry rootstocks and cultivars from the Czech Republic

67%

Blazkova J.

Journal of Fruit and Ornamental Plant Research

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2004

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tom 12

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nr Spec.ed.2

18

Pathogenic fungi occurring on Goniolimon tataricum [L.] boiss in Poland and their control. II. Fungi associated with healthy and diseased plants of G. tataricum and their pathogenicity

67%

Skrzypczak C.

Phytopathologia Polonica

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1992

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tom 03

19

Grzyby wyosobnione z nekrotycznych plam na liściach różaneczników zawsze zielonych Rhododendron L.

59%

Kowalik M., Muras P., Zolna M., Kierpiec B.

Zeszyty Problemowe Postępów Nauk Rolniczych

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2010

|

tom 554

Badania prowadzono na 16 taksonach różaneczników w prywatnej kolekcji na Pogórzu Wielickim. Celem badań była identyfikacja grzybów mogących powodować nekrozy liści, wybranych do prac hodowlanych, różaneczników zawsze zielonych (Rhododendron L.) Z liści z objawami nekroz wyodrębniono 983 kolonie grzybów, należące do 45 gatunków. Wśród nich dominowały: Pestalotia sydowiana, Alternaria alternata i Epicoccum purpurascens, stanowiące ponad 77% ogółu wyodrębnionych kolonii. W mniejszej liczbie wyodrębniono: Penicillium verrucosum v. cyclopium, Trichoderma viride, Sordaria fimicola, Humicola fuscoatra v. fuscoatra, Humicola grisea v. grisea, Mortierella isabellina i Trichoderma pseudokoningii. Wykazano, że najgorszą zdrowotnością cechowały się: ‘Mikkeli’, ‘Peter Tigerstedt’, ‘Nippon’ oraz R. aureum x R. brachycarpum. Najlepsza zdrowotność liści charakteryzowała taksony: ‘Haaga’, ‘Koichiro Wada’, ‘Koichiro Wada’ x ‘R. aureum’, ‘Belkanto’ x ‘R. aureum’, R. maximum x R. aureum, co wskazuje na możliwości ich wykorzystania w dalszych pracach hodowlanych, jako cennych form rodzicielskich.

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Productive value of new foreign strawberry cultivars evaluated in 2007-2010

51%

Masny A., Zurawicz E.

Journal of Fruit and Ornamental Plant Research

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2010

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tom 18

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nr 2

273-282

The study was conducted in the 2007-2010 season, in the Pomological Orchard of the Research Institute of Pomology and Floriculture in Skierniewice, Poland. Under assessment was the productive value of 10 foreign strawberry cultivars: 'Camarosa', 'Gloria', 'Ventana', 'Albion' (USA), 'Susy', 'Vima Rina', 'Vima Xima', 'Elianny', 'Nancy' (the Netherlands) and 'Malling Pearl' (England). The standard cultivars were: 'Honeoye' and 'Elsanta'. The cultivars were evaluated in terms of fruit ripening time, marketable yield, fruit size and firmness, soluble solids and vitamin C content, the level of fruit infection by grey mould (Botrytis cinerea) and plant infection by leaf spot (Mycosphaerella fragariae), leaf scorch (Diplocarpon earliana) and powdery mildew (Sphaerotheca macularis). The studies revealed that the earliest to ripen were the fruits of the cultivar 'Ventana' and the last those of 'Vima Xima'. The most productive were: 'Elsanta', 'Vima Xima' and 'Nancy'. The largest fruits were produced by: 'Elianny', 'Camarosa', 'Vima Xima', 'Gloria' and 'Albion'. The fruits of the cultivars 'Albion', 'Gloria' and 'Vima Rina' were notable for the highest firmness. The highest amounts of soluble solids were found in the fruits of 'Elianny' and 'Malling Pearl'. The highest amounts of vitamin C were in 'Albion', 'Ventana' and 'Nancy'. Most of the cultivars were characterized by low infection of leaf spot, leaf scorch and powdery mildew. Moderately infected by leaf scorch were: 'Ventana' and 'Vima Xima', and by powdery mildew - 'Nancy'. Of all the evaluated cultivars the most useful for cultivation in central Poland is 'Vima Xima' because of its high productivity, high fruit quality and a ripening time that is later than in the other cultivars.

Ograniczanie wyników

First report of Nigrospora sphaerica causing leaf spots on Celtis australis from Himachal Pradesh, India

Activities of nitrogen metabolism-related enzymes in cucumber leaves infected with Pseudomonas syringae pv.lachrymans

Involvement of salicylic acid in defense response of BTH- and arbutin-treated Cucumis sativus against Pseudomonas syringe pv. lachrymans

Characterization of Phyllosticta hostae causing Phyllosticta leaf spot on spider lily in China

Fenton reagent and titanium dioxide nanoparticles as antifungal agents to control leaf spot of sugar beet under field conditions

The influence of BTH and arbutin on PAL activity and phenolic compounds content in cucumber leaves infected with Pseudomonas syringae pv. lachrymans

Activity of laminarin in control of strawberry diseases

Characteristics of wheat leaf diseases development in Latvia

Resistance stability to leaf diseases of sour cherry varieties in Lithuania

Effect of propiconazole [Tilt 250 EC] and Drechslera poae on germination capacity of Kentucky bluegrass

Occurrence and control of Rhizoctonia rot on Ficus pumila

Fungi isolated from leaves of different Iris spp.

Susceptibility of Festuca rubra L. ssp. commutata and rubra to infestation by fungal pathogens under conditions of fungicidal protection

Epidemiology of Cercospora leaf spot of sugar beet in central Poland

Variation in leaf infection of winter wheat cultivars by fungi of genus Septoria in relation to environmental conditions

Potential use of Olejan 85 EC for protecting some species of ornamental plants against diseases

Resistance to abiotic and biotic stressors in sweet cherry rootstocks and cultivars from the Czech Republic

Pathogenic fungi occurring on Goniolimon tataricum [L.] boiss in Poland and their control. II. Fungi associated with healthy and diseased plants of G. tataricum and their pathogenicity

Grzyby wyosobnione z nekrotycznych plam na liściach różaneczników zawsze zielonych Rhododendron L.

Productive value of new foreign strawberry cultivars evaluated in 2007-2010