Two new species of rhipiphoridae (Insecta: Coleoptera) in Israel     

Q. Argaman  Z. Mendel 《Phytoparasitica》1988,16(1):63-63

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Host selection by the pine processionary caterpillarthaumetopoea wilkinsoni     

Z. Mendel 《Phytoparasitica》1988,16(2):101-108

The occurrence of nests of the pine processionary caterpillar (PPC),Thaumetopoea wilkinsoni Tarns (Lepidoptera: Thaumetopoeidae), was recorded in two 9-year-old plots planted withPinus halepensis, P. brutia andP. eldarica in a randomized block design. Nest density was highest inP. eldarica and lowest inP. halepensis. The mean number of nests per tree and their frequency distribution indicate that the preference of the PPC is in the order P.eldarica >P brutia >P. halepensis;it is believed to be related to shape of the tree. Planting ofP. eldarica in camping sites is not recommended, due to its high susceptibility to colonization by the PPC.  相似文献   

Sinoxylon anale — A new destructive wood borer in Israel     

Q. Argaman  Z. Mendel  Z. Mendel  A. Zehavi 《Phytoparasitica》1987,15(3):257-258

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Provenance as a factor in susceptibility of Pinus halepensis to Matsucoccus joseph (homoptera: Margarodidae)     

Zvi Mendel 《Forest Ecology and Management》1984,9(4):259-266

International provenance trials of Pinus halepensis and related species, P. brutia and P. eldarica, allowed study of the relationship between seed origin of P. halepensis and susceptibility to the Israeli pine bast scale (Matsucoccus josephi, Homoptera: Margarodidae), and the infestation of P. brutia and P. eldarica by this pest. The Greek and Israeli provenances displayed a lower susceptibility to attacks by the pest than did the North African and Spanish provenances. The lower susceptibility is expressed by a higher percentage of unaffected trees, low rate of injury and low density of Matsucoccus ovisacs. Two different mechanisms may be responsible for the relative resistance of P. halepensis of the Greek and the Israeli populations. It is possible that resistance to the pest was transferred from P. brutia to P. halepensis in Greece, where the natural distribution of these pine species overlaps or overlapped. On the other hand, the relative resistance of the Israeli provenances may be due to long coexistence in Israel of M. josephi and P. halepensis.  相似文献   

Note: First record of the eucalyptus gall wasp<Emphasis Type="Italic">Ophelimus maskelli</Emphasis> and its parasitoid,<Emphasis Type="Italic">Closterocerus chamaeleon</Emphasis>, in Turkey     

M. Doğanlar  Z. Mendel 《Phytoparasitica》2007,35(4):333-335

The Eucalyptus gall waspOphelimus maskelli (Ashmead) (Hymenoptera: Chalcidoidea: Eulophidae: Ophelimini) and its introduced parasitoidClosterocerus chamaeleon (Hymenoptera: Chalcidoidea: Eulophidae: Entedoninae) are recorded for the first time in the Mediterranean and Aegean Regions of Turkey. Some morphological characters of adult and larva ofO. maskelli and larva ofC. chamaeleon are described and illustrated. Distributions of the two wasps collected in Turkey are given. Results indicate that the biological control agent,C. chamaeleon, has spread over 1,300 km in the 16 months since its initial release.  相似文献   

Tomato glycoalkaloids: role in the plant and in the diet     

Friedman M 《Journal of agricultural and food chemistry》2002,50(21):5751-5780

Tomatoes, a major food source for humans, accumulate a variety of secondary metabolites including phenolic compounds, phytoalexins, protease inhibitors, and glycoalkaloids. These metabolites protect against adverse effects of hosts of predators including fungi, bacteria, viruses, and insects. Because glycoalkaloids are reported to be involved in host-plant resistance, on the one hand, and to have a variety of pharmacological and nutritional properties in animals and humans, on the other, a need exists to develop a better understanding of the role of these compounds both in the plant and in the diet. To contribute to this effort, this integrated review presents data on the history, composition, and nutrition of tomatoes, with special focus on the assessment of the chemistry, analysis, composition, nutrition, microbiology, and pharmacology of the tomato glycoalkaloids comprising alpha-tomatine and dehydrotomatine; their content in different parts of the tomato plant, in processed tomato products, and in wild and transgenic tomatoes; their biosynthesis, inheritance, metabolism, and catabolism; plant-microbe relationships with fungi, bacteria, viruses, insects, and worms; interactions with ergosterol and cholesterol; disruption of cell membranes; tomatine-induced tomatinases, pantothenate synthetase, steroid hydroxylases, and cytokines; and inhibition of acetylcholinesterase. Also covered are tomato-human pathogen relationships and tomatine-induced lowering of plasma cholesterol and triglycerides and enhancement of the immune system. Further research needs in each of these areas are suggested. The overlapping aspects are discussed in terms of general concepts for a better understanding of the impact of tomato glycoalkaloids in the plant in general and in food in particular. Such an understanding can lead to the creation of improved tomatoes and to improved practices on the farm and in the consumption of tomatoes.  相似文献   

X-ray diffraction studies on the crystallinity and molecular weight of humic acids     

S.A. VisserH. Mendel 《Soil biology & biochemistry》1971

Humic acids of different origins were investigated for crystallinity by means of X-ray diffraction techniques. Only the humic acid formed in a culture of Aspergillus flavus on a modified Czapek-Dox medium which contained 0·1 % phthalate was crystalline as found by electron microscopy and confirmed by X-ray diffraction techniques.  相似文献   

AN APPEAL TO AMERICAN BIOCHEMISTS     

Chittenden RH  Levene PA  Mendel LB 《Science (New York, N.Y.)》1932,75(1954):609-611

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THE ADMINISTRATION OF FERROUS IODIDE AND LINOLEIC ACID TO RATS DEPRIVED OF VITAMIN A     

Reed LL  Mendel LB  Vickery HB 《Science (New York, N.Y.)》1932,76(1970):300-301

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THE ROLE OF DIFFERENT PROTEINS IN NUTRITION AND GROWTH     

Osborne TB  Mendel LB 《Science (New York, N.Y.)》1911,34(882):722-732

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