Variation in susceptibility of six pine species and hybrids to pitch canker caused by <i>Fusarium  circinatum</i>

Kim, Y.-S.; Woo, Kwan-Soo; Koo, Yeong-Bon; Yeo, Jin-Kie

doi:10.1111/j.1439-0329.2008.00558.x

Cited by 19 publications

(22 citation statements)

References 13 publications

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“…However, native two-needle pine, P. thunbergii, is also being damaged by the disease especially in Jeju Island. In a previous test, we found that the mortality of three-yearold seedlings of P. × rigitaeda inoculated with an isolate from P. rigida in Baekryeong Island, Kyeonggi province, South Korea was zero (Kim et al, 2008). However, in this study, most of the seedlings of P. × rigitaeda had died by the fungus isolated from P. thunbergii.…”

Section: Resultsmentioning

confidence: 61%

“…In the recent study, 2 of 6 pine species or hybrid seedlings, P. echinata and P. virginiana, were the most susceptible to infection by Korean isolate of F. circinatum (Kim et al, 2008). However, some studies provided solid evidence on the seasonal and weather-related variations in levels of spore deposition rates of F. circinatum (Garbelotto et al, 2008;Schweigkofler et al, 2004).…”

Section: Resultsmentioning

confidence: 96%

“…circinatum can grow into host tissues before it is restricted completely even though host trees appear to be phenotypically resistant to the fungus (Aegerter and Gordon, 2006;Kim et al, 2008). In a previous test (Kim et al,Fig.…”

Section: Resultsmentioning

confidence: 99%

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Assessment of Pathogenic Variation against Pitch Canker Pathogen, Fusarium circinatum in Pinus thunbergii and Responses of Natural Selection Pinus × rigitaeda to Branch Inoculation in a Seed Orchard

Woo¹,

Yoon²,

Han³

et al. 2010

The Plant Pathology Journal

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A half-sib family of two 4-year-old seedlings of Pinus × rigitaeda was inoculated with each of 20 Pinus thunbergii isolates of Fusarium circinatum (syn. Fusarium subglutinans f. sp. pini) from two pitch canker damaged sites in Jeju Island, South Korea. Initial symptoms of needle damages were visible on most of the seedlings at 18 days after inoculation. The 20 tested isolates were not significantly different in virulence, based on lesion lengths at the site of inoculation (P = 0.217). The most virulent isolate FT-7 showed the longest lesion length. Some seedlings began to die 46 days after inoculation. All seedlings were dead by 68 days after inoculation except two seedlings inoculated with each of isolates FS-2 and FS-13, respectively. Using the FT-7, 38-year-old 11 P. × rigitaeda trees, which were survived from a seed orchard severely damaged by pitch canker, were inoculated on branches in the seed orchard in Jeju Island to assess differences in susceptibility to pitch canker. The 11 trees differed significantly (P < 0.001) in susceptibility to F. circinatum based on average lesion lengths measured 56 days after inoculation. It is possible that induced resistance contributed to their capacity to limit lesion development. The susceptibility of natural selection P. × rigitaeda trees are more likely affected by interaction with F. circinatum rather than environmental conditions.

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Section: Resultsmentioning

confidence: 61%

Section: Resultsmentioning

confidence: 96%

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Assessment of Pathogenic Variation against Pitch Canker Pathogen, Fusarium circinatum in Pinus thunbergii and Responses of Natural Selection Pinus × rigitaeda to Branch Inoculation in a Seed Orchard

Woo¹,

Yoon²,

Han³

et al. 2010

The Plant Pathology Journal

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“…This finding is consistent with results obtained by Elvira-Recuenco et al [46] and Swett et al [47] who found symptomless P. radiata seedlings for 475 days after inoculation or at least 52 weeks, respectively. Other studies also demonstrated the presence of asymptomatic seedlings, but all of them were conducted on Pinus species [42][43][44]. To our knowledge, this is the first study in which the presence of asymptomatic yet infected seedlings has been recorded in the Picea and Larix genera.…”

Section: Discussionmentioning

confidence: 73%

Evaluation of the Susceptibility of Several Czech Conifer Provenances to Fusarium circinatum

Martín‐García

Lukačevičová

Flores-Pacheco

et al. 2018

Forests

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Pine pitch canker (PPC), caused by Fusarium circinatum, is considered among the most important diseases affecting pines in many locations throughout the world. In Europe, F. circinatum is currently present in the Iberian Peninsula, posing a high risk of its spread into currently disease-free countries in Europe. In the present study, the susceptibility of Pinus sylvestris, Picea abies, and Larix decidua originating in the Czech Republic to F. circinatum was tested. Furthermore, the presence of asymptomatic yet infected seedlings was also checked. This study demonstrated the pathogenicity of F. circinatum to the Czech provenance of P. sylvestris, whereas Picea abies and Larix decidua proved to be tolerant. The reisolation of F. circinatum beyond the inoculation point demonstrated that this quarantine pathogen is able to infect the three conifers tested, giving rise to asymptomatic seedlings for at least eight and a half months. To our knowledge, this is the first study in which the presence of symptomless seedlings has been recorded in the genera Picea and Larix. This finding points out that the European legislation would fail to avoid the risk of new introductions via symptomless seedlings, since this legislation is only restricted to plants of the genus Pinus and the species Pseudotsuga menziesii.

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“…(Kim, Woo, Koo, & Yeo, 2008). Another study found that wounding due to weather events provided the primary infection courts for F. circinatum (Woo, Y.J.…”

Section: Pitch Canker Resistance Trialsmentioning

confidence: 99%

ANALYSIS OF A Pinus radiata SEED STOCK FIELD TRIAL IN THE NATIVE AÑO NUEVO STAND IN CALIFORNIA

Brassey¹

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ANALYSIS OF A Pinus radiata SEED STOCK FIELD TRIAL IN THE NATIVE AÑO NUEVO STAND IN CALIFORNIA Christina BrasseyThis study was a part of the international collaborative IMPACT project, which aims to address the potential threat that the pitch canker disease poses to the use of Pinus radiata D. Don in plantations in New Zealand, Australia, and Chile. A field trial of 264 seedstocks was planted adjacent to a native stand of pitch canker infected P. radiata on the central coast of California, and disease symptom development was recorded over a period of 3 years. The results did not correlate with a greenhouse study of the same seedstocks inoculated with Fusarium circinatum Nirenberg & O'Donnell, the causal agent of pitch canker. Three main types of symptoms were identified (branch flagging, pitchy buds, and chlorotic tips), and preliminary isolation analyses suggest that the disease observed is actually caused by Diplodia pinea (Desm.) Kickx. Survival analysis showed that the effect of tree genetic origin was significant to its time to disease, and that spatial location in the plantation was also significant. Average nearest neighbor analysis showed disease distribution to be significantly clustered, which also suggests that the disease is not pitch canker, but diplodia blight. This experiment illustrates the difficulty in performing naturally infected field trials when another similar-looking fungal disease is also present. It also provides data on seedstock resistance to diplodia blight, another fungal disease important to P. radiata forest managers.

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Variation in susceptibility of six pine species and hybrids to pitch canker caused by Fusarium circinatum

Cited by 19 publications

References 13 publications

Assessment of Pathogenic Variation against Pitch Canker Pathogen, Fusarium circinatum in Pinus thunbergii and Responses of Natural Selection Pinus × rigitaeda to Branch Inoculation in a Seed Orchard

Assessment of Pathogenic Variation against Pitch Canker Pathogen, Fusarium circinatum in Pinus thunbergii and Responses of Natural Selection Pinus × rigitaeda to Branch Inoculation in a Seed Orchard

Evaluation of the Susceptibility of Several Czech Conifer Provenances to Fusarium circinatum

ANALYSIS OF A Pinus radiata SEED STOCK FIELD TRIAL IN THE NATIVE AÑO NUEVO STAND IN CALIFORNIA

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