Australasian Plant Pathology
1448-6032
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Rapid diagnosis of Fusarium root rot in soybean caused by Fusarium equiseti or Fusarium graminearum using loop-mediated isothermal amplification (LAMP) assays
Tập 44 - Trang 437-443 - 2015
Rapid diagnostic assays for Fusarium root rot in soybean, caused by Fusarium
equiseti or Fusarium graminearum were developed using the target gene CYP51C.
Both assays amplified the target gene in 60 min at 62 °C, after which they were
assessed for specificity and sensitivity. Specificity was evaluated against
other Fusarium spp., other fungal species, and oomycetes. A positive
yellow-green color (...
Control of Ceratocystis manginecans causing wilt disease on Acacia mangium seedlings
Tập 47 - Trang 579-586 - 2018
Acacia mangium is the main plantation species in Vietnam, accounting for more
than 54% of the plantation forest estate. However, acacia plantations throughout
Vietnam have been widely infected by Ceratocystis manginecans wilt disease,
posing a serious threat to the long-term commercial viability of the species.
Experiments were performed for the control of C. manginecans on Acacia mangium,
testing...
Influence of spore dose and interrupted wet periods on the development of pear scab caused by Venturia pirina on pear (Pyrus communis) seedlings
Tập 29 - Trang 255-262 - 2000
The influence of spore dose and interrupted wet periods on pear scab infection
was studied under controlled conditions by assessing disease development on pear
seedlings. Under optimal conditions (20°C and continuous wetness), the severity
of leaf scab (lesions/cm2) increased with conidial concentrations ranging from
102 to 105 conidia/mL. Pear seedlings inoculated with conidia were also exposed
t...
Trichodorid nematodes from Australia with description of two new species from native vegetation
Tập 20 - Trang 52-66 - 1991
During a survey of plant parasitic nematodes associated with native vegetation
in Australia, two new species of Paratrichodorus were found. Paratrichodorus
orrae n.sp. was collected from Eucalyptus woodland and P. queenslandensis n.sp,
from tropical rainforest, both closely resembling P. grandis. Paratrichodorus
lobatus and the closely related P. teres are studied and the six trichodorid
species r...
DNA amplification fingerprinting analysis of genetic variation within Fusarium oxysporum f.sp. zingiberi
Tập 38 - Trang 51-54 - 2009
Genetic variation among 29 isolates of Fusarium oxysporum f.sp. zingiberi (Foz)
collected from diseased ginger rhizome in production regions throughout
Queensland was analysed using DNA amplification fingerprinting (DAF). Eight
isolates of other Fusarium species and/or formae speciales were included for
comparative analysis. Within the Foz isolates, three haplotypes were identified
based on 17 pol...
Resolving the status of Neonectria ditissima in South Africa
Tập 39 - Trang 43-45 - 2010
Fruit pathogens are currently one of the main factors involved in
quarantine-related market access. Unconfirmed South African records pertaining
to the presence of the causative agent of European canker of apples, Neonectria
ditissima, have been the cause of many disputes regarding its status as a
quarantine pest in this country. To clarify this issue, the identity of fungal
isolates that were pre...
Development of a PCR assay for detection of the thin, binucleate Rhizoctonia causing Eradu patch disease of lupin and barley
Tập 32 - Trang 289-297 - 2003
The field symptoms of Eradu patch are distinct, stunted patches in narrow-leaf
lupin and ill-thrift patches in barley. The pathogen, a thin, binucleate
Rhizoctonia (TBR), is difficult to isolate with standard methods. To develop an
assay specific to TBR, the ribosomal RNA ITS region was amplified and a 610 bp
section including the conserved 5.8S region was sequenced. This sequence did not
match an...
Seed dressing with Baytan and barley yield in Western Australia
Tập 17 - Trang 99-100 - 1988
Seed dressing with Baytan (a.i. triadimenol) completely controlled powdery
mildew for more than 60 days and reduced disease levels for the rest of the
season, increasing barley yield by 11% at Esperance. In 16 field experiments in
southern Western Australia representing 32 agro-climatic environments, Baytan
increased yield by an average 7%; greater percentage yield increases occurred in
high yield...
Experiments with excised lesions from wheat leaves infected by Pyrenophora tritici-repentis
Tập 18 Số 4 - Trang 90-93 - 1989
Lesion fragments from a resistant and a susceptible wheat infected with
Pyrenophora tritici-repentis were placed on water agar. Frequency of isolation
from both wheats increased similarly with lesion age. The widths of hyphae at
the point of emergence from fragments increased with lesion age in the
susceptible cultivar only. Diameters of 24-h-old mycelial colonies in the agar
around fragments decr...