Topic
Cupania
About: Cupania is a research topic. Over the lifetime, 25 publications have been published within this topic receiving 305 citations.
Papers
TL;DR: The first experimental study to demonstrate that leaf domatia can benefit plants against herbivory in a natural system is demonstrated, and the possible stabilizing effect of leaf Domatia on predator-prey interactions is discussed.
Abstract: Although associations between mites and leaf domatia have been widely reported, their consequences for plants, especially for natural tree populations, particularly in the tropics, are largely unknown. In experiments with paired Cupania vernalis (Sapindaceae) saplings in a semi-deciduous forest in south-east Brazil, we blocked leaf domatia to examine their effect: (1) on mites and other arthropods, and (2) on damage caused by fungi and herbivorous arthropods. In general, plants with resin-blocked domatia had fewer predaceous mites on leaves than control plants with unaltered domatia, but the total abundances of fungivorous and of phytophagous mites remained unchanged. However, phytophagous eriophyid mites, the most numerous inhabitants of domatia, decreased on leaf surfaces with the blocking treatment. In a second experiment, treated plants lacking functional domatia developed significantly greater numbers and areas of chlorosis, apparently due to increased eriophyid attacks, whereas fungal attack, epiphyll abundance and leaf-area loss were unaffected. This seems to be the first experimental study to demonstrate that leaf domatia can benefit plants against herbivory in a natural system. The possible stabilizing effect of leaf domatia on predator-prey interactions is discussed.
51 citations
TL;DR: It is highlighted that plant defensive chemistry mechanisms are crucial while searching for novel insecticidal products in French Guiana and that solvents, plant tissues, plant family and location had a significant effect on mortality while light, available resources and vegetation type did not.
26 citations
TL;DR: Two new species of Meliolaceae (black mildews) are described based on specimens recently collected in western Panama, and sequence data of 18S and 28S rDNA are published for A. lozanellae, which becomes the third species ofMeliolales and the first species of the genus Appendiculella for which molecular data are available.
Abstract: Two new species of Meliolaceae (black mildews) are described based on specimens recently collected in western Panama. Appendiculella lozanellae on leaves of Lozanella enantiophylla is the first species of Appendiculella known on Cannabaceae. Appendiculella chiriquiensis on leaves of Cupania guatemalensis is the first record of a species of Appendiculella on Sapindaceae. These species differ from known species on their respective host relationships by the presence of larviform appendages attached to the perithecia, as well as by characteristics of hyphae, appresoria and ascospores. Sequence data of 18S and 28S rDNA are published for A. lozanellae, which becomes the third species of Meliolales and the first species of the genus Appendiculella for which molecular data are available.
21 citations
TL;DR: Four Eocene pollen species, with affinities to Sapotaceae, Loranthaceae, Euphorbiaceae and Sapindaceae, were studied with light and scanning electron microscopy to increase the understanding of familial and subfamilial relationships of the fossils to extant taxa.
17 citations
Journal Article•
TL;DR: The results indicate a low natural regeneration in the understory of the eucalypt stands 11 years after abandonment, and the possible inhibitory role of Corymbia citriodora in the establishment and growth of native tree species is discussed.
Abstract: SUMMARY This study evaluated the floristic and phytosociological structure of the native tree community of the Atlantic Forest in five plantations of eucalypt ( Corymbia citriodora) abandoned since 1996 in the Uniao Biological Reserve, Rio de Janeiro, Brazil. Eleven years after abandonment, plots of 20×10m were established totaling 0.1ha, in five different stands. A total of 219 individuals with DBH ≥5cm were sampled and distributed in 18 families and 36 species. The most important species were Xylopia sericea, Eugenia supraaxillaris, Cupania oblongifolia and Annona dolabripetala. Fabaceae was the richest family in species, followed by Myrtaceae and Bignoniaceae. Annonaceae was the family that had the greatest number of individuals, followed by Myrtaceae and Sapindaceae. The density and basal area per ha, by stands, ranged from 0 to 1010 individuals and 0 to 9.9m 2 ·ha -1 , respectively. Species richness ranged from 0 (stand 4) to 22 (stand 2). The results indicate a low natural regeneration in the understory of the eucalypt stands 11 years after abandonment. The possible inhibitory role of Corymbia citriodora in the establishment and growth of native tree species is discussed.
16 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2021 | 1 |
| 2020 | 1 |
| 2019 | 1 |
| 2018 | 1 |
| 2017 | 1 |
| 2016 | 3 |