First report of peanut foot rot caused by <i>Neocosmospora vasinfecta</i> in mainland China

Pan, R.; Deng, Q.; Deng, M.; Guan, M.; Xu, Donglin; Gai, Yunpeng; Chen, W.; Yang, Yiqi

doi:10.1111/j.1365-3059.2010.02360.x

Cited by 7 publications

(11 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…5 -15.5µm whereas the ascospores of var. africana were more commonly found in the range of 9.5 -11.5µm, supported by Dau et al (2010), Fuhlbohm et al (2007) and Pan et al (2010). While this variation in size is an interesting feature between the two varieties, Cannon and Hawksworth (1984) also reported this difference as not statistically significant therefore is not relevant for distinguishing between varieties.…”

Section: Morphologymentioning

confidence: 84%

“…There have been reports of peanut root and pod rot caused by N. vasinfecta in Taiwan (Huang et al 1992), Vietnam (Dau et al 2010) and China (Pan et al 2010;Gai et al 2011a;Sun et al 2011a) that have reported similar symptoms in the field and after inoculation of plants under controlled conditions. Neocosmospora vasinfecta has also been reported as a pathogen of chickpea in Pakistan (Ali et al 2011) and soybean in the United States of America (Gray et al 1980;Greer et al 2015), China (Gai et al 2011b) and South Korea (Sun et al 2014).…”

Section: Research Backgroundmentioning

confidence: 93%

“…The morphology of N. vasinfecta is similarly described in most published literature with little variation between observations made by all authors both in vitro and in situ. Cannon and Hawksworth (1984), Dau et al (2010), Fulbohm et al (2006 and Pan et al (2010) all described Neocosmospora vasinfecta in vitro as having white and floccose mycelia with hyphae that are 1-5µm diameter, septate with a tendency to aggregate in strands with some anastomosis reportedly observed by Cannon and Hawksworth (1984). The pale orange-red ascomata or perithecia are also commonly observed as 200-500µm high, 170-480µm wide with a 100µm long neck ending in an ostiole.…”

Section: Morphologymentioning

confidence: 98%

“…africana (Arx). Extensive crop damage caused by the disease was first reported in an irrigated peanut crop in the North Burnett region of Queensland (Fuhlbohm et al 2007) and has since been found in many other areas worldwide (Dau et al 2010;Pan et al 2010;Gai et al 2011a;Sun et al 2011a). Neocosmospora root rot is characterised by symptoms such as leaf chlorosis and wilting followed by rapid plant death and the presence of reddish-orange perithecia on the taproot and lateral root system of the plant (Fuhlbohm et al 2007).…”

Section: Research Backgroundmentioning

confidence: 99%

“…Neocosmospora root rot of peanuts is considered to be an emerging soil borne disease caused by Neocosmospora vasinfecta var. africana, a pathogen that has been reported sporadically in peanut crops in Australia (Fuhlbohm et al 2007), China (Pan et al 2010;Gai et al 2011a;Sun et al 2011a), South Africa (Baard & van Wyk 1985), India (Sakhuja & Sethi 1985), Taiwan (Huang et al 1992) and Vietnam (Dau et al 2010).…”

Section: Neocosmospora Root Rota New Soil Borne Pathogenmentioning

confidence: 99%

See 4 more Smart Citations

Investigation into the emerging soil borne disease of peanut – Neocosmospora root rot

Wenham¹

View full text Add to dashboard Cite

Neocosmospora root rot is an emerging soilborne disease of peanut (Arachis hypogaea L.) crops in Australia caused by Neocosmospora vasinfecta var. africana. The fungal pathogen was first identified in southern Queensland in 2005 following extensive damage to an irrigated peanut crop, and has since been found in all peanut growing areas in Queensland and New South Wales. Typical symptoms of the disease include extensive chlorosis and wilting of the plant starting from the main stem, and a blackened and decayed root system with reddish-orange perithecia of N. vasinfecta present on necrotic tissue of the main tap root and lateral root system as well as the pods. While the disease has been widely observed in agricultural production areas of Australia and is considered one of the most destructive pathogens of peanut, the biology, ecology and aetiology of N. vasinfecta is largely unknown therefore the biotic and abiotic factors that may influence the infectivity of the pathogen and severity of disease epidemics have not been identified. The purpose of this thesis is to investigate the biology, ecology and aetiology of N. vasinfecta var. africana and understand how these factors may contribute to the pathogenicity of the fungus.Due to limited knowledge of the biology of N. vasinfecta var. africana, a morphological and molecular approach was taken to determine the taxonomic identification and the morphological characteristics of the pathogen. The results of the morphological analysis of isolates collected from a range of peanut growing areas in Queensland identified the fungus to the species level as Neocosmospora vasinfecta. Further morphological analysis of the ascospores confirmed the characteristics of the ascospores to be consistent with the morphological description for the variety africana. Morphological analysis of isolates collected from peanut crops in Georgia were also consistent with N. vasinfecta however a MegaBlast search revealed the species variety to be vasinfecta which may account for the difference in pathogenicity seen between the two countries.Neocosmospora root rot has been identified in all peanut growing areas in Australia, however outbreaks of the disease have been sporadic and contained to isolated areas of peanut crops. An investigation into the behaviour of N. vasinfecta var. africana concluded that the fungus is likely to originate from foci of infected plants where soil inoculum is high and environmental conditions are conducive to infection, and is spread to neighbouring plants. N. vasinfecta var. africana has been identified as the most prevalent fungi isolated where plants have exhibited symptoms such as wilting, chlorosis, plant death and root decay, and therefore is considered to be a primary pathogen. There is the potential for N. vasinfecta var. africana to infect plants in conjunction with other pathogens such as peanut Tospovirus, which was evidenced by the presence of Tobacco Streak Virus (TSV) in the roots of peanut plants exhibiting symptoms of Neocosmospora root rot. Perithecia ...

show abstract

Section: Morphologymentioning

confidence: 84%

Section: Research Backgroundmentioning

confidence: 93%

Section: Morphologymentioning

confidence: 98%

Section: Research Backgroundmentioning

confidence: 99%

Section: Neocosmospora Root Rota New Soil Borne Pathogenmentioning

confidence: 99%

See 3 more Smart Citations

Investigation into the emerging soil borne disease of peanut – Neocosmospora root rot

Wenham¹

View full text Add to dashboard Cite

show abstract

Neocosmospora vasinfecta (stem rot: soybean)

2019

CABI Compendium

View full text Add to dashboard Cite

show abstract

Identification and Pathogenicity of Fungi Associated with Leaf Spot of Muskmelon in Eastern Shandong Province, China

Zhang

et al. 2022

Plant Disease

View full text Add to dashboard Cite

Leaf spot is a serious disease in the growth and development of muskmelon, which can affect its quality and yield. In recent years, Malianzhuang Muskmelon Base, the main muskmelon producing area in Shandong Province, China, has been seriously affected by leaf spot. Since 2018, symptomatic leaves were collected from eleven production areas of this base to determine the pathogens of muskmelon foliar diseases. 200 fungal strains were isolated and 10 genera and 17 species were identified based on morphological characteristics and multi-locus phylogenetic analysis (ITS, GADPH, RPB2, HIS3, EF-1α, and LSU). The most frequently isolated species from each sampling area was Alternaria tenuissima with 77 strains, followed by A. alternata. Pathogenicity experiments showed that A. alternata, A. tenuissima, Fusarium neocosmosporiellum (formerly Neocosmospora vasinfecta), F. acuminatum, Exserohilum rostratum, Bipolaris sorokiniana, and Stagonosporopsis cucurbitacearum (formerly Didymella bryoniae) could cause symptoms highly similar to those of infected leaves observed under natural conditions in the field. Therefore, these fungal isolates are considered to be the primary pathogens causing muskmelon leaf spot, and A. tenuissima and A. alternata were the most common and virulent pathogens in this study. In addition, this is the first study of F. neocosmosporiellum, F. acuminatum, E. rostratum, and B. sorokiniana as pathogens associated to muskmelon leaf spot in China as well as the world.

show abstract

First report of peanut foot rot caused by Neocosmospora vasinfecta in mainland China

Cited by 7 publications

References 3 publications

Investigation into the emerging soil borne disease of peanut – Neocosmospora root rot

Investigation into the emerging soil borne disease of peanut – Neocosmospora root rot

Neocosmospora vasinfecta (stem rot: soybean)

Identification and Pathogenicity of Fungi Associated with Leaf Spot of Muskmelon in Eastern Shandong Province, China

Contact Info

Product

Resources

About