<abstract xmlns="http://www.w3.org/1999/xhtml">Plants respond to stress or damage by releasing volatile compounds, primarily for defense purposes. These volatiles function as signals for different interactions of the plant with its environment. In this study, the volatile chemical profile of healthy <italic>Garcinia mangostana</italic> L. (mangosteen) leaves was compared against leaves infested with the scale insect, <italic>Aspidiotus rigidus</italic> Reyne (Hemiptera: Diaspididae) through solid phase microextraction (SPME) coupled with gas chromatography-mass spectrometry (GC-MS). Analyses revealed that leaves emit the terpene kaur-16-ene in response to <italic>A. rigidus</italic> infestation. Kaur-16-ene is a precursor of gibberellin, a plant hormone for growth and development. The results suggest that the emission of kaur-16-ene in infested <italic>G. mangostana</italic> may play a role relevant in increasing the resistance of the plant towards infestations by herbivores.</abstract>

Biological Control Research Unit, Center for Natural Sciences and Environmental Research

Effect of <italic>Aspidiotus rigidus</italic> infestation on the volatile chemical profile of the host plant <italic>Garcinia mangostana</italic>

<abstract xmlns="http://www.w3.org/1999/xhtml">The root-knot nematode <italic>Meloidogyne incognita</italic> is a major soil parasite of lentil crops. Increasing restrictions of chemical nematicides have triggered a growing attention and interest in alternate root-knot nematode management. The present study was conducted to examine the level of resistance and/or susceptibility of five lentil cultivars (PL-456, KLS-218, Desi, DPL-62, Malika), grown in pots, against the root-knot nematode <italic>M. incognita</italic>. Root-knot nematode reproduction and host damage were assessed by recording the nematode infestation levels and reduction percentage of plant growth parameters. Nematode response and plant growth differentiated amongst the lentil cultivars. None of the cultivars was found immune or highly resistant. The cultivar Malika was found moderately resistant as it showed the lowest number of galls and egg masses/root as well as the lowest reduction of plant fresh weight (10.4%) and dry weight (6.9%). On the other hand, the cultivar Desi manifested the highest susceptibility exhibiting the highest number of galls and egg masses. There was a significantly negative correlation between the number of galls and plant growth parameters (plant fresh and dry weight and plant height).</abstract>

Resistance screening of lentil cultivars against the root-knot nematode <italic>Meloidogyne incognita</italic>

<abstract xmlns="http://www.w3.org/1999/xhtml">Endophytic bacteria of rice plants (<italic>Oryza sativa</italic> L.) from eight different cultivars were screened for their ability in inducing disease symptoms, plant growth promotion and antagonistic activity against <italic>Xanthomonas oryzae</italic> pv. <italic>oryzae.</italic> Out of the 63 whole isolates, five were plant pathogens. Based on phenotypic characteristics and 16S rDNA sequence analysis, these were identified as <italic>Pseudomonas oryzihabitans</italic>, <italic>P. fulva</italic>, <italic>Pantoea ananatis</italic>, <italic>Pantoea</italic> sp., <italic>Cellulomonas</italic> sp. Four out of the 63 isolates behaved as potentially good plant growth-promoting and biocontrol agents. These were identified as <italic>Bacillus</italic> sp., <italic>B. subtilis</italic>, <italic>Pseudomonas putida</italic> and <italic>Enterobacter</italic> sp. This is the first report of pathogenic and endophytic bacteria from rice grown in field conditions in North of Iran.</abstract>

Department of Plant Pathology, Faculty of Agricultural Sciences and Food Industries, Science and Research Branch

University College of Agriculture and Natural Resources, University of Tehran

Iranian Research Institute of Plant Protection (IRIPP), Research Department of Biological Control

Identification and determination of characteristics of endophytes from rice plants and their role in biocontrol of bacterial blight caused by <italic>Xanthomonas oryzae</italic> pv. <italic>oryzae</italic>

<abstract xmlns="http://www.w3.org/1999/xhtml">Temperature, salinity and water deficit can be major environmental constraints which reduce distribution of indigenous plants in the Mediterranean region. Laboratory experiments were carried out to assess the effect of temperature, sodium chloride (NaCl) and polyethylene glycol 6000 (PEG) on germination of <italic>Ballota hirsuta</italic> seeds. The germination responses of seeds were determined over a wide range of temperature (5 to 35°C), salinity (0 to 136 mM NaCl) and water stress (0 to −1 MPa PEG). Germination percentage was optimum at 20°C (78%), and showed a decline at lower (5°C, 25%) or higher (30°C, 18%) temperature values and total inhibition of germination at 35°C. Under salinity and water stress conditions, there was a significant deterioration in most germination parameters such as lower final germination percentage, increased mean germination times and lower germination rates.</abstract>

Department of Environmental Biological Sciences, Faculty of Natural Sciences and Life

Laboratory of Plant Biodiversity: Conservation and valorization

Germination responses of <italic>Ballota hirsuta</italic> seeds under conditions of temperature, salinity and water stress

<abstract xmlns="http://www.w3.org/1999/xhtml">A straightforward LC-ESI-MS/MS method was developed and validated for the detection and quantitation of the herbicide glyphosate (GLY) and its metabolite aminomethyl phosphonic acid (AMPA) in honeybees. The method was validated, fulfilling the SANTE 11945/2015 guideline criteria, demonstrating acceptable mean recoveries at LOQ and 10×LOQ varying from 75-87% for both compounds. LOQ was determined at 0.2 and 0.5 μg/g bee body weight (bw) for GLY and AMPA respectively. Analysis of 14 honeybee samples displayed only one positive sample, containing GLY marginally above LOQ and traces of AMPA.</abstract>

Direct determination of glyphosate and aminomethyl phosphonic acid in honeybees

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Hellenic Plant Protection Journal

 The Hellenic Plant Protection Journal (HPPJ) (ISSN 1791-3691) is the scientific publication of the Benaki Phytopathological Institute (BPI) replacing the Annals of the Benaki Phytopathological Institute (ISSN 1790-1480) which had been published since 1935. Starting from January 2008, the Hellenic Plant Protection Journal is published semiannually, in January and July each year.  HPPJ publishes scientific work on all aspects of plant health and plant protection referring to plant pathogens, pests, weeds, pesticides and relevant environmental and safety issues. In addition, the topics of the journal extend to aspects related to pests of public health in agricultural and urban areas.  Papers submitted for publication can be either in the form of a complete research article or in the form of a sufficiently documented short communication (including new records). Only original articles which have not been published or submitted for publication elsewhere are considered for publication in the journal. Review articles in related topics, either submitted or invited by the Editorial Board, are also published, normally one article per issue. Upon publication all articles are copyrighted by the BPI.  Manuscripts should be prepared according to instructions available to authors and submitted in electronic form through Editorial Manager. All submitted manuscripts are considered and published after successful completion of a review procedure by two competent referees.  The content of the articles published in HPPJ reflects the view and the official position of the authors. The information and opinions contained herein have not been adopted or approved by the HPPJ Editorial Board. The HPPJ Editorial Board neither guarantees the accuracy of the information included in the published articles nor may be held responsible for the use to which information contained herein may be put.  For all parties involved in the act of publishing (the author(s), the journal editor(s), the peer reviewers, and the publisher) it is necessary to agree upon standards of expected ethical behavior. HPPJ follows the ethics statements of De Gruyter journals, which are based on the Committee on Publication Ethics (COPE) Code of Conduct guidelines available at www.publicationethics.org.  Archiving  Sciendo archives the contents of this journal in Portico - digital long-term preservation service of scholarly books, journals and collections.  Plagiarism Policy  The editorial board is participating in a growing community of Similarity Check System's users in order to ensure that the content published is original and trustworthy. Similarity Check is a medium that allows for comprehensive manuscripts screening, aimed to eliminate plagiarism and provide a high standard and quality peer-review process. 

Hellenic Plant Protection Journal

Volume 11 (2018): Issue 1 (January 2018)

Effect of Aspidiotus rigidus infestation on the volatile chemical profile of the host plant Garcinia mangostana

Resistance screening of lentil cultivars against the root-knot nematode Meloidogyne incognita

Identification and determination of characteristics of endophytes from rice plants and their role in biocontrol of bacterial blight caused by Xanthomonas oryzae pv. oryzae

Germination responses of Ballota hirsuta seeds under conditions of temperature, salinity and water stress

Direct determination of glyphosate and aminomethyl phosphonic acid in honeybees

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