Dieback
Mostrando 13-18 de 18 artigos, teses e dissertações.
-
13. Passage and Survival of Chlamydospores of Phytophthora cinnamomi Rands, the Causal Agent of Forest Dieback Disease, Through the Gastrointestinal Tracts of Termites and Wild Birds
Chlamydospores of Phytophthora cinnamomi Rands have been shown to survive in the intestinal tracts of termites (Nasutitermes exitiosus) and two species of forest birds indigenous to West Australian jarrah forests. Viable chlamydospores were recovered from bird feces within the normal rate of passage time for food through the gut. The above factors would allo
-
14. The delayed resurgence of equatorial forests after the Permian–Triassic ecologic crisis
In conjunction with the Permian–Triassic ecologic crisis ≈250 million years ago, massive dieback of coniferous vegetation resulted in a degradation of terrestrial ecosystems in Europe. A 4- to 5-million-year period of lycopsid dominance followed, and renewed proliferation of conifers did not occur before the transition between Early and Middle Triassic.
The National Academy of Sciences.
-
15. Environmental mutagenesis during the end-Permian ecological crisis
During the end-Permian ecological crisis, terrestrial ecosystems experienced preferential dieback of woody vegetation. Across the world, surviving herbaceous lycopsids played a pioneering role in repopulating deforested terrain. We document that the microspores of these lycopsids were regularly released in unseparated tetrads indicative of failure to complet
National Academy of Sciences.
-
16. The terminal Paleozoic fungal event: evidence of terrestrial ecosystem destabilization and collapse.
Because of its prominent role in global biomass storage, land vegetation is the most obvious biota to be investigated for records of dramatic ecologic crisis in Earth history. There is accumulating evidence that, throughout the world, sedimentary organic matter preserved in latest Permian deposits is characterized by unparalleled abundances of fungal remains
-
17. Purification and Characterization of a NADPH-Dependent Aldehyde Reductase from Mung Bean That Detoxifies Eutypine, a Toxin from Eutypa lata1
Eutypine (4-hydroxy-3-[3-methyl-3-butene-1-ynyl] benzaldehyde) is a toxin produced by Eutypa lata, the causal agent of eutypa dieback in the grapevine (Vitis vinifera). Eutypine is enzymatically converted by numerous plant tissues into eutypinol (4-hydroxy-3-[3-methyl-3-butene-1-ynyl] benzyl alcohol), a metabolite that is nontoxic to grapevine. We repo
American Society of Plant Physiologists.
-
18. Influence of ecosystematic factors on survival of Escherichia coli after large-scale release into lake water mesocosms.
Mass cultures of an Escherichia coli K-12 strain were released into exposed mesocosms in a eutrophic lake. The release was performed with and without additional input of the E. coli culture medium to stimulate the scenario of leakage of a production fermenter on one hand and to compare the influence of the added organic nutrients with that of the added strai