| detection and quantification of airborne conidia of fusarium circinatum, the causal agent of pine pitch canker, from two california sites by using a real-time pcr approach combined with a simple spore trapping method. | pinus radiata (monterey pine), a tree native to coastal california and mexico, is widely planted worldwide for timber production. a major threat to monterey pine plantations is the fungal disease pine pitch canker, caused by fusarium circinatum (hypocreales). we present a novel trapping approach using filter paper in combination with a rapid molecular method to detect the presence of inoculum in the air. the assay is also useful for diagnosing the presence of the pathogen on plants. the test is ... | 2004 | 15184151 |
| geographic 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 have a much more limited distribution. d. scrobiculata was first reported as an endophyte and weak path ... | 2004 | 15757175 |
| potential diversity in vegetative compatibility groupings in the california population of gibberella circinata. | pitch canker, caused by gibberella circinata, is a disease affecting pines throughout the world. although the pathogen is capable of sexual reproduction, natural populations are often comprised of very few vegetative compatibility groups (vcgs), which implies a predominance of asexual reproduction. however, even where outcrossing occurs, a population could have limited vcg diversity due to a low level of polymorphism at the loci governing vegetative compatibility (=vic loci). to determine whethe ... | 2006 | 16879958 |
| variation in rates of spore deposition of fusarium circinatum, the causal agent of pine pitch canker, over a 12-month-period at two locations in northern california. | patterns of spore deposition by fusarium circinatum, the causal agent of pine pitch canker (ppc) of monterey pine (pinus radiata) and other conifers, were studied between may 2003 and april 2004 at two sites in northern california using a novel spore trapping method combined with a real-time polymerase chain reaction (pcr) approach. at each study site, two plots were sampled by placing spore traps at 100 m intervals along transects 600 m in length. the air was sampled continuously by exchanging ... | 2008 | 18943249 |