0000000000096156
AUTHOR
Mariantonietta Colagiero
showing 4 related works from this author
Phylogeny and morphology of Hirsutella tunicata sp. nov. (Ophiocordycipitaceae), a novel mite parasite from Peru
2013
Abstract A new species of Hirsutella was isolated from unidentified mites on Petri plates inoculated with soil and root fragments collected from asparagus rhizosphere at Viru, Northern Peru. The fungus differs from other Hirsutella species by an envelope surrounding the conidium, conidia dimension and DNA sequences. In PDA cultures, the mycelium produced aerial hyphae with conidiogenous cells mainly at right angles, occasionally showing a secondary conidiophore. The solitary conidia are cymbiform, slightly apiculate, 5.0–6.0 × 3.0–4.0 μm. Phylogenetic analyses with partial rRNA and β-tubulin gene sequences confirmed the fungus as an Hirsutella (Ophiocordycipitaceae). Closest species shown b…
CLIMATE CHANGES AND NEMATODES: EXPECTED EFFECTS AND PERSPECTIVES FOR PLANT PROTECTION
2011
Some factors interfering with plant protection from phytoparasitic nematodes are reviewed in the light of changes brought about by the global warming in action. The mechanisms mainly concern changes in temperature and water regimes. The effects of climate changes on the epidemiology and management of the main phytoparasitic species occurring in Mediterranean environments include the alteration of the reproductive cycles due to plants productivity, the geographic dispersion by more northern or higher altitude shifts, the spread of vectors. Other related indirect mechanisms are feedback effects due to the reactions of cultivated species or weeds, and those related to natural enemies. The pote…
CARATTERIZZAZIONE METAGENOMICA di MICRORGANISMI E ORGANISMI DEL TERRENO PER UN LORO UTILIZZO COME AGENTI di LOTTA BIOLOGICA CONTRO NEMATODI FITOPARAS…
2014
La microflora della rizosfera riveste un ruolo fondamentale sia nella difesa che nello sviluppo e crescita delle piante. Molti studi hanno dimostrato inoltre che i nematodi sono in grado d’influenzarne la composizione. I batteri a loro volta producono una varietà di composti (antibiotici, nutrienti, esoenzimi e altre molecole segnale), in grado d’indurre ulteriori cambiamenti. L’obiettivo di questo lavoro è stato quello di studiare i cambiamenti nella biodiversità della microflora batterica di un terreno proveniente da un’azienda biologica, conseguenti all'introduzione sperimentale di larve di Meloidogyne incognita e al trattamento con un nematocida (fenamifos). Seguendo un approccio metage…
OBSERVATIONS ON THE BIOLOGY OF A PREDATORY NEMATODE BELONGING TO DIPLOGASTERIDAE
2011
The use of predatory nematodes as biological control agents of phytoparasitic nematodes has been re-evaluated only recently. To be effective, predatory nematodes should be easy to grow, cheap, and available on a commercial scale. In addition, they must show a reproductive rate sufficient to sustain a high population density and a significant longevity and stability for storage. The predators are not phytopathogenic nematodes, and among the positive outcomes of their introduction are remarkable their environment compatibility and safety for other non-target organisms, as well as the ability to search for prey. These features are present in Diplogasteridae. Their adaptability enables them to …