منابع مشابه
‘Awa Dieback in Hawaii
brown leaf spots; or diffuse yellow blotches. Severely affected plants have rotten basal stems and stumps and black, rotten roots. Symptoms of ‘awa dieback may resemble other ‘awa diseases or conditions. The mosaic symptoms associated with ‘awa dieback resemble nutrient deficiencies (e.g., nitrogen, potassium, and iron) caused by insufficient fertilizer applications or planting in a nutrient-po...
متن کاملJACOBI: Metrosideros DIEBACK IN HAWAI'I
Approximately 50,000 ha of native wet Metrosideros forest on the island of Hawai'i experienced a drastic reduction (dieback) of the tree canopy between 1954 and 1977. Two general hypotheses have previously been suggested to explain this phenomenon: 1) Metrosideros dieback has resulted from recently introduced pathogens, and 2) the dieback has naturally occurred previously in Hawai'i, and is rel...
متن کاملGM animals - another GM crops?
As new biotechnologies are developed, the parallels with GM crops are often drawn. In this paper, I consider GM animals and contrast them with GM crops. I use a systems of innovation perspective to consider innovation, product markets and regulatory systems and suggest that whilst there are some parallels between GM crops and animals there are also clear differences. There are differences in th...
متن کاملNematodes associated with dieback disease of cranberries.
Hemicycliophora ritteri and Paratrichodorus minor were associated in high numbers with a previously unknown "dieback disease" of cranberry. Chemical treatment with nematicides and fungicides failed to control this disease. There were no correlations (P </= 0.05) among nematode numbers and yields of good or rotten berries, and with disease ratings. Nematodes were apparently not involved in the e...
متن کاملClimate change and the ash dieback crisis
Beyond the direct influence of climate change on species distribution and phenology, indirect effects may also arise from perturbations in species interactions. Infectious diseases are strong biotic forces that can precipitate population declines and lead to biodiversity loss. It has been shown in forest ecosystems worldwide that at least 10% of trees are vulnerable to extinction and pathogens ...
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ژورنال
عنوان ژورنال: Nature Plants
سال: 2017
ISSN: 2055-0278
DOI: 10.1038/s41477-017-0009-5