Characterization of fungal pathogens associated with grapevine trunk diseases in Arkansas and Missouri

Úrbez-Torres, J. R.; Peduto, F.; Striegler, R. Keith; Urrea-Romero, K. E.; Rupe, J. C.; Cartwright, R. D.; Gubler, W. D.

doi:10.1007/s13225-011-0110-4

Cited by 134 publications

(75 citation statements)

References 45 publications

(55 reference statements)

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“…2 Artificial inoculation. The upper site is the control inoculated by sterilized PDA plug, and the two sites below show pathogenesis of the isolate NW11-016 after 2 weeks related (Sakalidis et al 2011) and this was confirmed here, and it is confusing to find both N. ribis (Urbez-Torres et al 2012) and N. parvum (Martos et al 2011) ever described as canker pathogen of Vitis vinfera.…”

Section: Resultssupporting

confidence: 70%

Neofusicoccum parvum causing canker of seedlings of Juglans regia in China

Guo-Ning

Peng

et al. 2015

J. For. Res.

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Cankered, dying seedlings of Juglans regia were observed in Shaanxi province in the northwest region of China. Neofusicoccum parvum was isolated from these cankered tissues, with the identification based on morphology and an ITS-nrDNA sequence. In order to demonstrate how cultures of N. parvum could cause the expected symptoms, artificial infection, using these isolates and re-isolation of the pathogen, was used. This is the first report on this taxon as a walnut canker pathogen in China.

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Section: Resultssupporting

confidence: 70%

Neofusicoccum parvum causing canker of seedlings of Juglans regia in China

Guo-Ning

Peng

et al. 2015

J. For. Res.

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“…As discussed above, most studies investigating the incidence of dieback are either geographically restricted (Dakin et al 2010;McDonald & Eskalen 2011;Urbez-Torres et al 2012) or focusing on the occurrence of a single causative agent across a large area. This study aims to assess an expansive geographical range (incorporating most of parkinsonia's range within Australia), and assess the wide range of fungi associated with the occurrence of dieback.…”

Section: Referencesmentioning

confidence: 99%

Parkinsonia dieback: investigations into its cause, ecology and potential for biological control

Diplock¹

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Parkinsonia aculeata, a Weed of National Significance (WoNS) has been observed displaying unexplained mortality within populations across northern Australia since the 1950s. This disorder is commonly referred to as parkinsonia dieback and causes substantial plant death in some areas. In some observed cases, plants suffering from dieback show symptoms starting from the tip of the branch which begins to die back, with phyllodes and pinnae drying up and remaining attached to the plant. A distinct dark, necrotic region on the stem appears to move down the plant as the disease develops. Vascular staining is often evident when the vascular tissue of stems are exposed. It was hypothesised that this disorder is caused by a fungal pathogen or pathogen complex, offering potential for biological control of parkinsonia. Dieback movement in a naturally occurring area was studied over a period of seven years.Plant health in two 50m transects was assessed to monitor the movement of parkinsonia iv dieback and to establish a general base line understanding of the time taken for an adult parkinsonia tree to be killed by dieback. Individual plant health generally declined over consecutive years, with 98% of plants dying over the study period and no new seedling recruitment observed.These studies confirmed that a range of fungi, particularly those from the Botryosphaeriaceae family are associated with parkinsonia dieback. Field inoculation trials proved some of these species are capable of causing large lesions on adult plants, and in some instances are able to cause plant mortality when formulated using a dry, solid medium.Transect studies assessing the movement of naturally occurring dieback through a stand of parkinsonia plants provide the first long term study of this phenomenon and its effect on plant health over time. This provides a significant contribution to our understanding of parkinsonia dieback and offers potential for the formulation of biocontrol agents following further investigations.v

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“…The DUBOS, 2000;VICENT et al, 2001;HALLEEN et al, 2004;AROCA et al, 2006;HALLEEN et al, 2006a;HALLEEN et al, 2006b;MOSTERT et al, 2006;ZANZOTTO et al, 2007;REGO et al, 2009;ÚRBEZ-TORRES et al, 2012;BERTSCH et al, 2013;BILLONES-BAAIJENS et al, 2013;WHITELAW-WECKERT et al, 2013;LOMBARD et al, 2014). In addition to these species, new genera have been continuously reported in literature.…”

Section: New Diseases Transmitted By Vegetative Propagationmentioning

confidence: 99%

Advances in Propagation of Grapevine in the World

et al. 2017

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-Grapevine production by classical grafting methods and in commercial scale emerged over 130 years. This system remained handmade until the mid-1950s, when emerged the first international certification programs aimed at obtaining mother plants with high viral sanity. The necessity to increase the scale of production on industrial model and plant material production based on minimum morphological standards appeared at the end of the 1960s. Along the 1970s, research unlocked knowledge on semi-automated grafting, process hygiene, use of plant growth regulators and understanding of physiological events of rootstock-scion compatibility, callus formation and rooting. So, until the mid-2000s, certification schemes and propagation processes advanced little in technical standard. However, grapevine growing areas were expanded and demands for plant material increased, and new diseases emerged from contaminated nurseries. These new diseases (new viral complexes, phytoplasmas, bacteria and grapevine trunk diseases) were discovered by high-sensitivity diagnostic methods. Today, there is a new discussion on the nursery segment worldwide. The propagation techniques have been reviewed from the perspective of reducing the incidence of new diseases and minimum physiological damage of nursery plants during the production stages. Therefore, technological innovations regarding equipment, practices and production inputs have been incorporated in new certification schemes. However, despite these advantages, these schemes have become more complex and multidisciplinary than previous ones, bringing difficulties in adaptation of nurserymen. Index-terms: Vitis grafting, nursery, certification, grapevine cuttings. AVANÇOS OBSERVADOS NA PROPAGAÇÃO DE VIDEIRAS NO MUNDORESUMO -A propagação de videiras a partir dos métodos clássicos de enxertia e em escala comercial teve origem há mais de 130 anos. Este sistema permaneceu artesanal até meados da década de 1950, quando se iniciaram os primeiros programas internacionais de certificação com foco na obtenção de plantas básicas com elevada sanidade para vírus. No fim da década de 1960, surgiu a necessidade de aumentar a escala para produção em um modelo industrial em que a muda apresentasse um padrão morfológico mínimo. Ao longo da década de 1970, aprofundaram-se as pesquisas relacionadas à automatização da prática de enxertia, à higienização do processo, ao uso de reguladores de crescimento e ao entendimento dos eventos fisiológicos da compatibilidade entre enxerto e porta-enxerto, formação de calos e enraizamentos. Assim, até meados dos anos 2000, os esquemas de certificação e o processo de propagação pouco evoluíram em termos técnicos. Porém, a medida que a área vitícola foi expandindo e a demanda por mudas aumentando, verificou-se que novas doenças se alastravam em escala global a partir de viveiros contaminados. Estas novas doenças (complexos virais, fitoplasmas, bactérias e fungos causadores de podridões vasculares) foram sendo descobertas à medida que os métodos de diagnose avançaram...

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Characterization of fungal pathogens associated with grapevine trunk diseases in Arkansas and Missouri

Cited by 134 publications

References 45 publications

Neofusicoccum parvum causing canker of seedlings of Juglans regia in China

Neofusicoccum parvum causing canker of seedlings of Juglans regia in China

Parkinsonia dieback: investigations into its cause, ecology and potential for biological control

Advances in Propagation of Grapevine in the World

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