Phytoparasitica (PHYTOPARASITICA)

Publisher: Merkaz Ṿolḳani; Phytopathological Society of Israel; Agudah ha-yisreʹelit le-madaʹ ha-asavim ha-raʹim, Springer Verlag

Current impact factor: 0.90

Impact Factor Rankings

2015 Impact Factor Available summer 2016
2014 Impact Factor 0.901
2013 Impact Factor 0.675
2012 Impact Factor 0.724
2011 Impact Factor 0.887
2010 Impact Factor 0.527
2009 Impact Factor 0.577
2008 Impact Factor 0.554
2007 Impact Factor 0.424
2006 Impact Factor 0.632
2005 Impact Factor 0.55
2004 Impact Factor 0.543
2003 Impact Factor 0.653
2002 Impact Factor 0.646
2001 Impact Factor 0.485
2000 Impact Factor 0.484
1999 Impact Factor 0.472
1998 Impact Factor 0.385
1997 Impact Factor 1
1996 Impact Factor 0.6
1995 Impact Factor 0.638
1994 Impact Factor 0.438
1993 Impact Factor 0.468
1992 Impact Factor 0.545

Impact factor over time

Impact factor

Additional details

5-year impact 0.93
Cited half-life 9.50
Immediacy index 0.18
Eigenfactor 0.00
Article influence 0.26
Website Phytoparasitica website
Other titles Phytoparasitica, Israel journal of plant protection sciences
ISSN 0334-2123
OCLC 2387054
Material type Periodical
Document type Journal / Magazine / Newspaper

Publisher details

Springer Verlag

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  • Classification

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: Survival of entomopathogenic nematodes (EPNs) in soils is attributed to their entering a dormant state—anhydrobiosis—as soil moisture decreases, but EPNs with poor desiccation tolerance and low anhydrobiotic capabilities may practice desiccation avoidance. We compared the effect of soil moisture gradient on downward movement of the highly desiccation-tolerant Steinernema carpocapsae and the poorly desiccation-tolerant Heterorhabditis bacteriophora. Infective juveniles (IJs) were applied to the surface of moist (11–13% w/w moisture) sandy soil in buckets. Nematode distribution was monitored at different depths 3, 14 and 28 days after application. In uncovered buckets, soil moisture decreased to 1% in the upper 5-cm layer after 28 days. H. bacteriophora IJs abandoned the upper soil layers as dryness intensified with >80% found in the bottom (20–25 cm) layer. In contrast, >70% S. carpocapsae IJs remained in the upper layer. In covered buckets, with 10% moisture throughout the experiment, heterorhabditid IJs were equally distributed between the 10–15 cm and 20–25 cm layers; only 7% remained in the upper layer. Again, >70% S. carpocapsae IJs remained in the upper layer throughout. Soil type influenced H. bacteriophora IJs' downward migration. In sandy and sandy loam soils, with rapid evaporation, >80% IJs were in the bottom layer 14 and 28 days after application. In the loam soil, with higher moisture retention, >75% IJs remained in the 10–15 cm layer and <20% migrated to the bottom. Results provide initial evidence of a possible stress-avoidance strategy in H. bacteriophora under natural conditions.
    Phytoparasitica 10/2015; 43(5). DOI:10.1007/s12600-015-0488-8
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    Phytoparasitica 09/2015; 43(5). DOI:10.1007/s12600-015-0484-z
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    ABSTRACT: Sweet orange scab (SOS) is a fungal disease of citrus which is caused by Elsinoë australis. It affects the aesthetics of the fruit by forming wart-like protruded lesions on the fruit skin, and also affects the leaves which act as source of inoculum in the orchards. SOS is widespread in the different citrus species such as grapefruit (Citrus x paradisi Macfd.), sweet orange [C. sinensis (L.) Osb.], and mandarin (C. reticulata Blanco). In this study, we report the development of symptoms and changes in polyphenolic profile of ‘Rio Red’ grapefruit leaves in response to E. australis infection. Qualitative and quantitative analysis of polyphenols in ‘Rio Red’ grapefruit leaves inoculated with E. australis were conducted using high performance liquid chromatography (HPLC) at two different time points post inoculation. Development of SOS symptoms under light was recorded and categorized into four different morphological stages. Caffeic acid, luteolin-7-O glycoside, naringin, naringenin, apigenin-7-O glycoside and eriodictoyl were identified in healthy grapefruit leaves. The quantitative changes in the identified polyphenols were measured 9 days post-inoculation by comparing levels on the 9-day control versus the 9-day post-inoculated leaves. Total polyphenol levels decreased substantially in E. australis-infected ‘Rio Red’ grapefruit leaves 9 days post-inoculation. Levels of naringin, naringenin, apigenin glucoside and eriodictoyl decreased with E. australis infections indicating the pathogen’s ability to overcome some of plant’s defenses. Compared to 9-day controls, 9-day inoculated leaves had much less caffeic acid.
    Phytoparasitica 09/2015; 43(5):629-636. DOI:10.1007/s12600-015-0483-0
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    ABSTRACT: Four experimental trials were carried out in order to evaluate the efficacy of different products (chemicals, resistance inducers and natural products) as well as heat air when applied to basil seeds naturally infested by Peronospora belbahrii, the causal agent of downy mildew of basil, a pathogen which is seed transmitted. Seed quality, as vigour index, was also evaluated. In general, seed treatment had a positive effect on the reduction of disease incidence and on plant biomass at the end of each trial, with very satisfactory results when disease incidence was lower than 10% and still satisfactory results with a higher disease incidence. Although many of the fungicides, resistance inducers and thyme oil treatments tested showed a significant disease reduction compared with the untreated control, the protection offered was only partial. Moreover, the effectiveness of the tested seed treatments varied considerably between the trials. The seeds treatment with heat air (65°C for 10 min) significantly reduced the number of infected plants per container. The interaction effect between the fungicides (at the lowest dosage tested, with the exception of acibenzolar-S-methyl, and dimethomorph), thyme oil and the heat air treatment was also significant. In terms of biomass, most treatments not significantly improved the fresh weight in comparison with the untreated control. The highest biomass was observed in the plots where seeds were dressed with mancozeb combined with heat air. Interestingly, thiram is also effective against other pathogens affecting basil and the thermal treatment and potassium phosphite are fully compatible with the rules of organic farming. Seed dressing represents the starting point of a full integrated approach for downy mildew management.
    Phytoparasitica 09/2015; 43(4). DOI:10.1007/s12600-015-0474-1
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    ABSTRACT: Phytophthora capsici, a pathogen causing crown and root rot of zucchini in southern Italy since the 1980s, has recently been observed in open field in northern Italy, causing severe losses. Since chemical control on zucchini is complicated by a limited availability of registered chemicals, as well as by the scalar harvest, a number of resistance inducers, organic amendments, biocontrol agents and fungicides were tested against P. capsici, under greenhouse conditions. Experiments were carried out at the nursery level, with different timing and number of applications. In the presence of a very high disease pressure, the best disease control was provided by mefenoxam, followed by the phosphite-based products, which acted as resistance inducers and also provided a positive effect on plant biomass. Acibenzolar-S-methyl, although effective, was sometimes phytotoxic. The biocontrol agents tested as well as the patented formulation of Brassica carinata defatted seed meals were not effective, providing results statistically similar to the untreated control. The efficacy of resistance inducers is interesting in view of their possible use in alternation with chemicals, or as stand-alone treatments in cultivation systems which do not adopt chemical control.
    Phytoparasitica 09/2015; 43(4). DOI:10.1007/s12600-015-0461-6
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    ABSTRACT: Novel phenoxy derivative Juvenile Hormone Analogs (JHAs) - pyriproxyfen and diofenolan were used to evaluate their efficacy against last instar larvae of polyphagous pest Spodoptera litura. Sixth instar day 1-3 old larvae were treated with different doses of pyriproxyfen and diofenolan. The JHAs disrupted the growth, development, molting and metamorphosis in S. litura treated larvae. Both the JHAs-pyriproxyfen and diofenolan were found to be equally potent in their effects. The larval duration was prolonged apart from inducing several malformations. They effectively controlled the polyphagous pest S. litura by inducing mortality, ecdysial failure, production of larval - pupal mosaics, reduced pupation, production of abnormal pupae, complete suppression of normal adult emergence and production of deformed non-viable adultoids. Being stable, posing minimal threat to non-target organisms including fish and birds, beneficial insects and safe to environment and humans, both these JHAs can be judicially incorporated into IPM programs along with other bio-rational methods for the successful control of polyphagous pest S. litura.
    Phytoparasitica 09/2015; 43(4). DOI:10.1007/s12600-015-0473-2
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    ABSTRACT: Melons (Cucumis melo L.) grown hydroponically in a greenhouse were heavily infested with powdery mildew. We isolated powdery mildew pathogens from the melon leaves and identified the isolate as Podosphaera xanthii KMP-6N, based on morphological characteristics and sequences of ribosomal DNA internal transcribed spacer (rDNA-ITS) regions. Host ranges of KMP-6N were determined by estimating the infectivity or pathogenicity after inoculating the conidia onto multiple plant species. The fungi caused severe powdery mildew symptoms on Cucurbitaceae plants, producing scattered conidia on conidiophores. The goal of this study was to observe KMP-6N conidiogenesis on melon leaves. The pathogen formed completely catenated conidiophores approximately 24 h from conidiophore erection to release of mature conidia. Six conidia were produced on the conidiophores and only the conidia at the apex reached maturity. The cycles of conidial release were repeated on melon leaves 14 to 18 times, at approximately 6-h intervals. In the final stage, conidia were released without causing growth and septation of generative cells. Conidiophores produced an average of 36 conidia during a 90-h period. In our study, the modes of conidiogenesis, lifetime of conidiophores and productivity of conidia on a conidiophore were described for powdery mildew fungi.
    Phytoparasitica 09/2015; 43(4). DOI:10.1007/s12600-015-0467-0
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    ABSTRACT: Wheat stem rust, wheat leaf rust, and wheat powdery mildew are three of the most economically damaging fungal diseases of wheat in China, caused by Puccinia graminis f. sp. tritici, Puccinia triticina, and Blumeria graminis f. sp. tritici, respectively. In this study, single-step multiplex polymerase chain reaction (PCR) was developed for the simultaneous detection of the three pathogens. Three sets of specific primers were selected, followed by optimization of the annealing temperature and the dNTPs, Taq DNA polymerase, and primer concentrations for multiplex PCR to establish a method for the simultaneous detection of P. graminis f. sp. tritici, P. triticina, and B. graminis f. sp. tritici at an early stage of infection. The specificity and sensitivity of the multiplex PCR were tested. We observed three specific bands of 395 bp, 151 bp, and 464 bp on amplification with a three-reaction system. The detection sensitivity of the multiplex PCR was 1 ng DNA for P. graminis f. sp. tritici, 10 pg DNA for P. triticina, and 10 pg DNA for B. graminis f. sp. tritici. This study pioneered the use of the triplex PCR system for simultaneous detection of P. graminis f. sp. tritici, P. triticina, and B. graminis f. sp. tritici in infected plant tissues. This novel PCR-based method provides a simple and rapid method for detecting various pathogens in wheat, which will assist in the simultaneous diagnosis and monitoring of multiple plant diseases.
    Phytoparasitica 09/2015; 43(4). DOI:10.1007/s12600-014-0442-1
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    ABSTRACT: Claviceps purpurea causes ergot, a serious disease of rye and grasses. Resistance genes to the pathogen have not been found in the genome of rye so far. Therefore we evaluated 90 rye genotypes in two seasons at three locations and analyzed the ergot incidence. In one location (Smolice) the same genotypes were also used to assess the influence of water spraying during rye flowering on ergot occurrence. Moreover, 29 cytoplasmic male-sterile genotypes of rye were used in Poznań, where within a 5 km distance there were no rye plants. In the first two experiments the source of the pathogen consisted of its sclerotia introduced into the soil, whereas in the third experiment a suspension of conidiospores was used to spray the plants from the moment of first flowering. Percentage of sclerotia in grain by weight in the first two experiments and sclerotia weight per ear in the third experiment were used as a measure of rye susceptibility to C. purpurea. Both rye genotype and location (weather conditions) showed significant variation for both traits. Low temperature and rainfall during rye flowering increased the occurrence of ergot. Water spraying of rye during flowering also boosted the occurrence of ergot. In another experiment, with sclerotia of C. purpurea used as inocula, ergot occurrence varied from 0 to 4.73 % in 2011/12 and from 0 to 5.22 % of sclerotia in grain yield in 2012/13. Cytoplasmic male-sterile rye inoculation with conidia of C. purpurea resulted in sclerotia presence which ranged from 0.10 to 0.26 g per ear.
    Phytoparasitica 09/2015; 43(4). DOI:10.1007/s12600-014-0443-0