Distribution of Diplodia pinea and its genotypic diversity within asymptomatic Pinus patula trees
نویسندگان
چکیده
منابع مشابه
Sources of Diplodia pinea endophytic infections in Pinus patula and P. radiata seedlings in South Africa
Diplodia pinea, an opportunistic and latent pathogen, can significantly affect Pinus productivity worldwide. Despite being studied in South Africa for almost 100 years, the source of D. pinea inoculum responsible for seedling infection is unknown. The aim of this study was to determine the role of seed in vertical transmission of D. pinea and to investigate sources of inoculum leading to horizo...
متن کاملDiplodia scrobiculata found in the southern hemisphere
Diplodia scrobiculata, a latent pathogen of Pinus spp. and other conifers with a limited distribution in the United States, Mexico and southern Europe, has not been reported previously in the southern hemisphere. This is unlike its close relative Diplodia pinea that is found in most parts of the world where pines are native or have been introduced. During an intensive D. pinea survey conducted ...
متن کاملMultisite inhibition of Pinus pinea isocitrate lyase by phosphate.
Our results show that the phosphate ion is a nonlinear competitive inhibitor of Pinus pinea isocitrate lyase. In addition, this compound induces a sigmoidal response of the enzyme, which usually exhibits standard Michaelis-Menten kinetics. This peculiar behavior of P. pinea isocitrate lyase could be explained by a dimer (two-site) model, in which phosphate binds cooperatively, but the affinity ...
متن کاملDiverse sources of infection and cryptic recombination revealed in South African Diplodia pinea populations.
This study considers the population diversity and structure of Diplodia pinea in South Africa at different spatial scales from single trees to plantations, as well as comparing infections on healthy and diseased trees. A total of 236 isolates were characterized using 13 microsatellite markers. Analysis of these markers confirmed previous results that D. pinea has a high level of gene and genoty...
متن کاملGeographic isolation of Diplodia scrobiculata and its association with native Pinus radiata.
Diplodia pinea (syn. Sphaeropsis sapinea) is a well-known latent pathogen of Pinus spp. with a worldwide distribution. As such, this fungus is native where pines are endemic in the northern hemisphere and it has been introduced into all countries of the Southern Hemisphere where pines are exotic. The newly described D. scrobiculata (formerly known as the B morphotype of D. pinea) is thought to ...
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ژورنال
عنوان ژورنال: Australasian Plant Pathology
سال: 2011
ISSN: 0815-3191,1448-6032
DOI: 10.1007/s13313-011-0060-z