Maria L. Pappas

Maria L. Pappas
Democritus University of Thrace | DUTH · Department of Agricultural Development

PhD
Associate Professor in Entomology & Acarology

About

59
Publications
15,625
Reads
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1,076
Citations
Introduction
Maria Pappas is an entomologist/acarologist currently working at the Department of Agricultural Development, Democritus University of Thrace. Her main research interests are insect-plant interactions, biological control and integrated pest management. Contact details: mpappa@agro.duth.gr
Additional affiliations
May 2021 - present
Democritus University of Thrace
Position
  • Professor (Associate)
May 2017 - May 2021
Democritus University of Thrace
Position
  • Professor (Assistant)
December 2013 - May 2017
Democritus University of Thrace
Position
  • Lecturer

Publications

Publications (59)
Article
Full-text available
Many predatory insects that prey on herbivores also feed on the plant, but it is unknown whether plants affect the performance of herbivores by responding to this phytophagy with defence induction. We investigate whether the prior presence of the omnivorous predator Macrolophus pygmaeus (Rambur) on tomato plants affects plant resistance against two...
Article
Full-text available
Biological control is an important ecosystem service delivered by natural enemies. Together with breeding for plant defence, it constitutes one of the most promising alternatives to pesticides for controlling herbivores in sustainable crop production. Especially induced plant defences may be promising targets in plant breeding for resistance agains...
Article
Full-text available
Phytophagy is a common feature among pure herbivorous insects and omnivores that utilise both plant and prey as food resources; nevertheless, experimental evidence for factors affecting their interactions is restricted to intraguild predation and predator-mediated competition. We herein focused on plant-mediated effects that could result from plant...
Article
Full-text available
Beneficial microorganisms are known to promote plant growth and confer resistance to biotic and abiotic stressors. Soil-borne beneficial microbes in particular have shown potential in protecting plants against pathogens and herbivores via the elicitation of plant responses. In this study, we evaluated the role of Fusarium solani strain K (FsK) in a...
Article
Full-text available
Several biological control agents of the hemipteran insect families Miridae, Anthocoridae and Pentatomidae, as well as mites of the family Phytoseiidae are known as zoophytophagous predators, a subset of omnivores, which are primarily predaceous but also feed on plants. It has been recently demonstrated that zoophytophagous predators are capable of...
Article
Full-text available
The island of Crete, due to the favorable temperate environmental conditions, is known for its high insect species biodiversity. In this contribution, we report the occurrence of two leafhoppers in Crete, Greece, Euscelis ohausi (Wagner) and Euscelidius variegatus(Kirschbaum) (Hemiptera: Cicadellidae), collected during systematic surveys for Auchen...
Article
Quantifying functional responses is a cornerstone in evaluating the predation efficiency of biological control agents such as predatory insects and mites. In this study, we investigate whether the efficiency of Neoseiulus californicus (Acari: Phytoseiidae) in consuming prey is driven by intraspecific interactions. For this purpose, laboratory funct...
Article
Lacewings are important natural enemies of soft-bodied arthropods. Chrysopidae and Hemerobiidae in particular include promising biological control agents of key agricultural pests. Here, we evaluated the efficacy of larvae and adults of the brown lacewing Micromus angulatus and the green lacewing Chrysopa formosa in controlling the green peach aphi...
Article
Full-text available
Beneficial soil microbes have long been recognized for their ability to improve plant growth, to antagonize pathogens and to prime plants against biotic stressors. Nevertheless, their ability to enhance plant resistance against arthropod pests remains largely unexplored, especially in crop plants such as pepper. Herein, we assessed the effects of s...
Article
Full-text available
Chrysoperla agilis Henry et al. is one of the five cryptic species of the carnea group found in Europe. They are known to widely occur in agricultural fields and survive and reproduce in a wide range of temperatures. The reproductive biology of the cryptic species is poorly known, especially regarding the number of matings required for the females’...
Article
Plant pollen is an important alternative food for generalist phytoseiid mites ensuring survival and supporting population build-up during periods of prey scarcity. However, in the short term predator efficacy can be negatively affected by pollen provisioning as a consequence of predator satiation or when pollen is preferred over prey. This is count...
Chapter
In nature, plants are continuously challenged by biotic stressors such as pathogenic microorganisms and herbivorous pests that often cause important yield reductions in crops. To address global food security issues but also consumer demands for healthier food production, a series of environmentally friendly crop protection strategies need to be emp...
Conference Paper
Full-text available
The susceptibility of six lentil (Lens culinaris) genotypes, i.e., three commercial cultivars (‘Samos’, ‘Dimitra’ and ‘Elpida’) and three landraces (ILL-590, FLIP 03-24L and FLIP 02-1L), to the pea aphid Αcyrthosiphon pisum was assessed under laboratory conditions. In a multi-choice arrangement set-up, young potted lentil seedlings with four expand...
Article
Plant–microbe–arthropod (PMA) three-way interactions have important implications for plant health. However, our poor understanding of the underlying regulatory mechanisms hampers their biotechnological applications. To this end, we searched for potential common patterns in plant responses regarding taxonomic groups or lifestyles. We found that most...
Poster
Full-text available
So far, biotechnological RNAi approaches in plants have been based on RNAi-inducing transgenes and/or transgenic plants. Here, we describe novel methods for the exogenous delivery in plants of RNA molecules having the potential to trigger RNAi in a transgene-free manner.
Article
Full-text available
Functional response models describe the relationship between prey density and per capita prey consumption rate by a predator. Type II functional responses, in which density‐dependent predation occurs via a decelerating feeding rate, seem to prevail in nature and are commonly described by Holling’s disk equation. In the derivation of the disk equati...
Book
Full-text available
Omnivorous arthropods are important components of natural and agricultural settings, capable of exploiting both animal and plant food (Coll and Guershon, 2002). Certain omnivorous pests, such as herbivorous thrips, are also capable of consuming prey (Trichilo and Leigh, 1986; Agrawal et al., 1999; van Maanen et al., 2012), whereas diet mixing by zo...
Article
Full-text available
Amblydromalus limonicus is a polyphagous phytoseiid predator used for the biological control of thrips and whiteflies in greenhouse crops. Besides various prey species, A. limonicus can also feed on pollen of different plants. Cattail pollen has been previously shown to be suitable for the development and reproduction of A. limonicus. Hence, it cou...
Article
Full-text available
The pathogenic bacterium Xylella fastidiosa is currently causing major crop losses in Italy and recently in Spain, but has not been reported in Greece to date. However, the risk of disease expansion is very high for the nearby olive producing countries. For this reason, the Region of Crete in collaboration with research institutions and universitie...
Article
Full-text available
Auchenorrhyncha and especially the xylem fluid-feeders belonging to the families Cicadellidae, Aphrophoridae and Cercopidae have received increasing attention in the last years, particularly in Europe, due to their potential ability to transmit the economically important bacterial pathogen Xylella fastidiosa. This is a xylem inhabiting bacterium th...
Article
Full-text available
Belowground symbiosis of plants with beneficial microbes is known to confer resistance to aboveground pests such as herbivorous arthropods and pathogens. Similarly, microbe-induced plant responses may also impact natural enemies of pests via the elicitation of plant defense responses and/or alteration of plant quality and growth. Nesidiocoris tenui...
Article
Supplying predators with alternative food can have short-term positive effects on prey densities through predator satiation (functional response) and long-term negative effects through increases of predator populations (numerical response). In biological control, alternative food sources for predators are normally supplied on the crop plants; using...
Article
Full-text available
Inducible anti-herbivore defenses in plants are predominantly regulated by jasmonic acid (JA). On tomato plants, most genotypes of the herbivorous generalist spider mite Tetranychus urticae induce JA defenses and perform poorly on it, whereas the Solanaceae specialist Tetranychus evansi, who suppresses JA defenses, performs well on it. We asked to...
Article
Full-text available
Zoophytophagy is common among predacious arthropods, but research on their role in plant-herbivore interactions is generally focused on predation effects whereas their phytophagy is largely neglected. Our recent study revealed the ability of zoophytophagous predators to induce defense related traits and to affect herbivore performance apart from pr...
Article
Full-text available
Plant pollen is considered a food of high nutritional quality for several natural enemies, such as predatory insects and mites. In periods of prey absence or scarcity, omnivorous predators often exploit plant pollen as an alternative food. In the case of predators feeding on mixed diets, pollen may be consumed supplementary to the main prey. Howeve...
Conference Paper
Full-text available
Direct effects of released natural enemies on non-target organisms comprise an important element of an environmental risk assessment scheme (van Lenteren et al., 2003). Native and exotic predators used in augmentative and inoculative biological control may negatively affect the abundance of non-target herbivores and intraguild predators, provided t...
Article
Background Iphiseius degenerans (Berlese) (Acari: Phytoseiidae) is a common predatory mite in citrus orchards in some areas of the Mediterranean basin and an important biological control agent of the thrips, Frankliniella occidentalis (Pergande) in Integrated Pest Management (IPM) programs in greenhouse crops. In this study, we evaluated the effect...
Data
Fig. S1Photos of adult female spider mites from each of the four strains used for this study. Fig. S2 Phylogenetic trees based upon the cytochrome oxidase subunit 1 (COI) sequences from spider mites, including sequences from the mite strains used for this study. Fig. S3 Fecundity of putative JA defense-suppressing T. urticae strains on def-1, wild-...
Article
Full-text available
Plants respond to herbivory by mounting a defense. Some plant-eating spider mites (Tetranychus spp.) have adapted to plant defenses to maintain a high reproductive performance. From natural populations we selected three spider mite strains from two species, Tetranychus urticae and Tetranychus evansi, that can suppress plant defenses, using a fourth...
Article
Full-text available
The greenhouse whitefly, Trialeurodes vaporariorum Westwood, is an important pest of field and greenhouse crops of horticultural and ornamental plants. In integrated pest management programs its control is mainly based on the release of biological control agents and application of chemical insecticides. Neonicotinoids are relatively new chemicals c...
Article
Full-text available
Phytoseiid mites of the genus Phytoseius are natural enemies of tetranychid and eriophyid herbivorous mites mostly found on hairy plants where they feed on prey, as well as on pollen. Nevertheless, the nutritional ecology and the role of these predators in biological pest control are only rarely addressed. In the present study, we evaluated the pot...
Article
Chrysoperla agilis Henry et al. is one of the five cryptic species of the carnea group found in Europe. Identification of these species is mainly based on the distinct mating signals produced by both females and males prior to copulation, although there are also morphological traits that can be used to distinguish among different cryptic species. E...
Article
The lacewings Dichochrysa flavifrons (Brauer) and Dichochrysa zelleri (Schneider) (Neuroptera: Chrysopidae) are considered as important biological control agents, and mass rearing is a prerequisite for their use in biological control programs. We evaluated the effect of Ephestia kuehniella Zeller eggs that are widely used for mass rearing other chr...
Article
Full-text available
The family Chrysopidae includes many species that could be considered important biological control agents. Chrysopid larvae and the adults of certain species are polyphagous predators and feed on several pests of economic importance. The use of chrysopids in biological control has been enabled by the development of efficient mass-rearing facilities...
Article
The predatory lacewing Dichochrysa prasina Burmeister (Neuroptera: Chrysopidae) is an abundant cosmopolitan species. In Greece, it is widespread in orchards and vegetable and field crops, and it has been considered an important biocontrol agent of aphids. In this work, the preimaginal development and adult longevity and reproduction of D. prasina w...
Article
The olive fruit fly Bactrocera (Dacus) oleae Gmelin is a major olive pest in Greece and other Mediterranean countries. Its population density and respective olive infestation is usually low in many areas of northern Greece during summer months. To some extent, this may be due to the prevailing high temperature and low relative humidity conditions....
Article
Full-text available
Preimaginal development and reproduction of the predatory lacewing Dichochrysa prasina Burmeister (Neuroptera: Chrysopidae) when its larvae had access at different nymphal numbers of the aphid Myzus persicae (Sulzer) (Hemiptera: Aphididae) were studied under laboratory conditions at 25 ± 1°C and a photoperiod of 16:8 (L:D) h. Preimaginal developmen...
Article
Full-text available
The effect of cold storage and photoperiod on diapause termination of the predatory mite Euseius finlandicus was studied under laboratory conditions. Females in diapause that developed under a short-day photoperiod of L:D 8:16 h and 20°C were exposed for 1–13 wk to 5°C and subsequently maintained under L:D 8:16 h and 20°C, after which the percentag...
Article
Full-text available
The effect of five constant relative humidity (RH) regimes (12,33,55,75, and 94%) on ovarian maturation, adult longevity, and egg production of Bactrocera (Dacus) oleae (Gmelin) (Diptera: Tephritidae) was studied at 25 ± 1°C and a photoperiod of 16:8 (L:D) h under laboratory conditions. The experimental insects developed in the preimaginal stages a...
Article
The effect of five constant relative humidity (RH) regimes (12%, 33%, 55%, 75% and 94%) on the preimaginal development and adult longevity and reproduction of Dichochrysa prasina Burmeister was studied at 26 ± 1 °C and a photoperiod of 16:8 (L:D) under laboratory conditions. For the experiments, larvae were fed individually on eggs of the flour mot...
Article
Preimaginal development and adult longevity and reproduction of Dichochrysa prasina Burmeister were studied at six constant temperatures (15, 20, 25, 27, 30 and 33 °C) and a photoperiod of 16:8 (L:D). Eggs of the flour moth Ephestia kuehniella (Zeller) were used as food throughout preimaginal development, whereas the adults of D. prasina fed on a l...
Article
Full-text available
The predatory lacewing Dichochrysa prasina Burmeister can feed and reproduce on various aphid species. However, other species such as the two spotted spider mite Tetranychus urticae Koch may serve as an alternative prey for this predator in the field in periods when the population density of aphids is low. In peach orchards in Northern Greece D. pr...
Article
The effects of different prey species on preimaginal development and survival, as well as on adult longevity and fecundity of the predatory lacewing Dichochrysa prasina Burmeister were studied under laboratory conditions. The prey species tested were the aphids Aphis fabae Scopoli, Aphis nerii Boyer de Fonscolombe, Aphis pomi De Geer, Hyalopterous...
Article
Full-text available
Development, survival, and reproduction of the predatory mite Kampimodromus aberrans Oudemans were studied at constant temperatures in the range from 15 to 35 degrees C under laboratory conditions. Larval developmental rate for both males and females increased gradually from 15 to 35 degrees C and decreased at higher temperatures. Lactin's nonlinea...
Article
The effect of single versus multiple mating on longevity and fecundity as well as the number of matings required to maximize a female's reproductive success of the predatory mite Kampimodromus aberrans Oudemans were studied under laboratory conditions. Newly emerged adult females of the stock colony of K. aberrans were placed individually on a bean...
Article
The mating behavior of the predatory mite Kampimodromus aberrans was studied in the laboratory at a constant temperature of 25 +/- 1 degrees C and a photoperiod of 16:8 (L:D). Forty pairs of newly emerged virgin females and unmated males, were maintained separately on leaf discs and their mating behavior, was observed continuously under a stereomic...

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Projects

Projects (3)
Project
NOVELMITE focuses on phytoseiid species found on wild Solanaceae and other plant families bearing glandular trichomes for their ability to cope with tomato defences and to efficiently suppress tomato pests. The research project was supported by the Hellenic Foundation for Research and Innovation (H.F.R.I.) under the “2nd Call for H.F.R.I. Research Projects to support Faculty Members & Researchers” (Project Number: 2496).
Project
INTOMED Research and Innovation Activities (RIA) primarily consist of activities aiming to establish new knowledge in the field of microbe-plant-arthropod interactions and explore the feasibility of new products/solutions/services for the sustainable control of pests in three major crops in the Meditterenean. INTOMED objectives and goals will produce new knowledge through scientific research that will be pursued with the collaborative research of the consortium partners from 3 Universities, 5 Research Institutes and one company. FUNDING The PRIMA programme is supported under Horizon 2020, the European Union’s Framework Programme for Research and Innovation. Budget: 823.000€ Starting date: 15th November 2019
Project
The overall goal of BeMOST is to identify effective and sustainable Integrated Pest Management (IPM) tools by understanding and exploiting beneficial interactions between plants and soil-borne beneficial microbes that enhance the resistance of crops against major agricultural arthropod pests. Website: https://bemost.agro.duth.gr/ BeMOST is funded by the Hellenic Foundation for Research & Innovation (HFRI).