Allelochemical
Mostrando 1-12 de 12 artigos, teses e dissertações.
-
1. Resistance of processing tomato genotypes to leafminer (Tuta absoluta)
RESUMO A cultura do tomateiro apresenta vários entraves que dificultam o seu cultivo, com destaque para a traça-do-tomateiro, Tuta absoluta (Lep.: Gelechiidae). Para reduzir os danos causados por essa praga, o desenvolvimento de cultivares resistentes é uma das principais alternativas. Objetivou-se com este trabalho selecionar genótipos de tomateiro com
Hortic. Bras.. Publicado em: 15/04/2019
-
2. Effects of Allelochemicals from Ficus microcarpaon Chlorella pyrenoidosa
This study was performed in order to isolate and identify unknown allelochemicals from Ficus microcarpa, and to investigate the inhibitory to bloom-forming of green alga Chlorella pyrenoidosa. Through gradient elution, fraction C2, whose inhibition of alga growth in diverse extracts was the strongest was shown to cause significant reductions of maximum quant
Braz. arch. biol. technol.. Publicado em: 2014-08
-
3. Alelopatia de frutos de erva-mate (ilex paraguariensis) no desenvolvimento do milho.
Este trabalho foi realizado com o objetivo de estudar o efeito alelopatico dos frutos maduros de erva-mate (ilex paraguariensis St.Hil.) sobre a germinacao e crescimento do milho hibrido SAVE 484 (Zea mays L.), e, subsidiariamente, se o tempo de permanencia dos frutos no solo interferiria em seu efeito alelopatico. Frutos maduros de erva-mate (erveira) foram
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
-
4. Do different casein concentrations increase the adverse effect of rutin on the biology of Anticarsia gemmatalis Hübner (Lepidoptera: Noctuidae)?
The flavonoid rutin is recognized as playing an important role in the protection of plants against lepidopterans. Bioassays with this compound are generally carried out using artificial diets. Proteins of high energy value, such as casein, are important ingredients of insect artificial diets as a source of essential amino acids. However, such proteins can ge
Neotropical Entomology. Publicado em: 2010-10
-
5. Selection for high foliar acylsugar contents in commercial quality tomatoes imparts resistance to the South American tomato pinworm Tuta absoluta / SELEÃÃO PARA TEOR DE ACILACÃCAR NAS FOLHAS EM TOMATEIROS COM QUALIDADE COMERCIAL CONFERE RESISTÃNCIA Ã TRAÃA (Tuta absoluta)
O trabalho foi realizado com os objetivos de genÃtipos de tomateiro com caracterÃsticas comerciais e altos teores foliares de acilaÃÃcares (AA), em diferentes backgrounds genotÃpicos, e avaliar seus nÃveis de resistÃncia à traÃa (Tuta absoluta), relativamente Ãs testemunhas comerciais, com baixos teores de acilaÃÃcares. Esses genÃtipos foram obt
Publicado em: 2008
-
6. SeleÃÃo para alto teor de acilaÃÃcares em genÃtipos de tomateiro e sua relaÃÃo com a resistÃncia ao Ãcaro vermelho (Tetranychus evansi) e à traÃa (Tuta absoluta). / Selection towards high acylsugars levels in tomato genotypes and its relationship with resistance to spider mite(Tetranychus evansi) and to the South American pinworm (Tuta absoluta).
Selection for high foliar levels of allelochemicals has been proposed as a suitable strategy for breeding tomatoes for arthropod pest resistance. In the Lycopersicon pennellii accession LA-716, acylsugars exsudated by type IV glandular trichomes present in all aerial parts of the plant reportedly mediate resistance to arthropod pests. This paper intended to
Publicado em: 2005
-
7. Mimosine, the Allelochemical from the Leguminous Tree Leucaena leucocephala, Selectively Enhances Cell Proliferation in Dinoflagellates
Mimosine, the allelochemical from the leguminous tree Leucaena leucocephala, is toxic to most terrestrial animals and plants. We report here that while mimosine inhibits major phytoplankton groups, it enhances cell proliferation in dinoflagellates. On addition to coastal seawater samples, mimosine is able to confer a growth advantage to dinoflagellates. The
American Society for Microbiology.
-
8. Alleopathy and spatial competition among coral reef invertebrates
Species of ectoprocts and solitary encrusting animals were subjected in aquaria to homogenates of 11 sympatric species of sponges and colonial ascidians. Five of the nine sponge species and one of the two ascidian species exhibited species-specific allelochemical effects. Evidence suggests that alleochemical provide a wide-spread, specific, and complex mecha
-
9. Structural and functional divergence of insect CYP6B proteins: From specialist to generalist cytochrome P450
How polyphagous herbivores cope with the diversity and unpredictability of plant defenses remains largely unknown at both the genetic and molecular levels. To examine whether generalist counterdefense enzymes are structurally more flexible and functionally more diverse, two counterdefensive allelochemical-metabolizing cytochrome P450 proteins, CYP6B1 from th
National Academy of Sciences.
-
10. Molecular cloning of a family of xenobiotic-inducible drosophilid cytochrome P450s: Evidence for involvement in host-plant allelochemical resistance
Cytochrome P450s constitute a superfamily of genes encoding mostly microsomal hemoproteins that play a dominant role in the metabolism of a wide variety of both endogenous and foreign compounds. In insects, xenobiotic metabolism (i.e., metabolism of insecticides and toxic natural plant compounds) is known to involve members of the CYP6 family of cytochrome P
The National Academy of Sciences of the USA.
-
11. Involvement of cytochrome P450 in host-plant utilization by Sonoran Desert Drosophila.
The four Drosophila species endemic to the Sonoran Desert (Drosophila mettleri, Drosophila mojavensis, Drosophila nigrospiracula, and Drosophila pachea) utilize necrotic cactus tissue or soil soaked by rot exudate as breeding substrates. Each Drosophila species uses a different cactus species as its primary host. D. pachea is limited to senita cactus by a bi
-
12. Identification of Syn-Pimara-7,15-Diene Synthase Reveals Functional Clustering of Terpene Synthases Involved in Rice Phytoalexin/Allelochemical Biosynthesis1
Rice (Oryza sativa) produces momilactone diterpenoids as both phytoalexins and allelochemicals. Accordingly, the committed step in biosynthesis of these natural products is catalyzed by the class I terpene synthase that converts syn-copalyl diphosphate to the corresponding polycyclic hydrocarbon intermediate syn-pimara-7,15-diene. Here, a functional genomics
American Society of Plant Biologists.