A strawberry disease caused by Acremonium strictum

Racedo, Josefina; Salazar, Sergio Miguel; Castagnaro, Atilio Pedro; Ricci, Juan C. Díaz

doi:10.1007/s10658-013-0279-3

Cited by 22 publications

(12 citation statements)

References 14 publications

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“…The genus Acremonium contains about 100 species, of which most are saprophytic, being isolated from dead plant material and soil [ 10 ]. It was reported that Acremonium strictum was the causal pathogenic fungus in strawberry [ 11 ]. However, plant disease caused by A. acutatum has not been reported in Korea.…”

Section: Discussionmentioning

confidence: 99%

Identification of Acremonium acutatum and Trichothecium roseum isolated from Grape with White Stain Symptom in Korea

Nam

Yoon

2014

Mycobiology

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During 2010 and 2012 grape harvest seasons in Gyeonggi-do, Korea, a white stain symptom was observed on the harvested grape fruits in 'Campbell-Early' and 'Kyoho' varieties. In samples collected from the infected vine, two different strains of pathogenic fungi have been found and identified as Acremonium acutatum and Trichothecium roseum based on fungal morphology and nucleotide sequence of internal transcribed spacer (ITS) and supported by the phylogenetic analysis of the rDNA-ITS region. The DNA homologies of the isolated strains were 99.8% and 99.6% identical with T. roseum (IFB-22133) and A. acutatum (CBS682.71), respectively. In the pathogenicity test, the spores of A. acutatum and T. roseum sprayed on the grapes caused white stain symptoms on the fruits in two weeks after the artificial inoculation, which is similar to observations in the field. To our knowledge, this is the first report of white stain symptoms caused by A. acutatum and T. roseum on the grapes in Korea.

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Section: Discussionmentioning

confidence: 99%

Identification of Acremonium acutatum and Trichothecium roseum isolated from Grape with White Stain Symptom in Korea

Nam

Yoon

2014

Mycobiology

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“…Acremonium strictum elicitor subtilisin (AsES) is an extracellular serine protease (GenBank accession number JX684014.2) obtained and purified from the opportunistic fungus A. strictum (Chalfoun et al , ; Racedo et al , ). It is synthesized as a 388‐residue inactive precursor composed of a signal peptide (SP), an N‐terminal propeptide (I9) and a peptidase domain (S8).…”

Section: Introductionmentioning

confidence: 99%

The fungal subtilase AsES elicits a PTI‐like defence response in Arabidopsis thaliana plants independently of its enzymatic activity

Pilar

Holton

Conti

et al. 2019

Molecular Plant Pathology

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Summary Acremonium strictum elicitor subtilisin (AsES) is a 34‐kDa serine‐protease secreted by the strawberry fungal pathogen A. strictum. On AsES perception, a set of defence reactions is induced, both locally and systemically, in a wide variety of plant species and against pathogens of alternative lifestyles. However, it is not clear whether AsES proteolytic activity is required for triggering a defence response or if the protein itself acts as an elicitor. To investigate the necessity of the protease activity to activate the defence response, AsES coding sequences of the wild‐type gene and a mutant on the active site (S226A) were cloned and expressed in Escherichia coli. Our data show that pretreatment of Arabidopsis plants with inactive proteins, i.e. inhibited with phenylmethylsulphonyl fluoride (PMSF) and mutant, resulted in an increased systemic resistance to Botrytis cinerea and expression of defence‐related genes in a temporal manner that mimics the effect already reported for the native AsES protein. The data presented in this study indicate that the defence‐eliciting property exhibited by AsES is not associated with its proteolytic activity. Moreover, the enhanced expression of some immune marker genes, seedling growth inhibition and the involvement of the co‐receptor BAK1 observed in plants treated with AsES suggests that AsES is being recognized as a pathogen‐associated molecular pattern by a leucine‐rich repeat receptor. The understanding of the mechanism of action of AsES will contribute to the development of new breeding strategies to confer durable resistance in plants.

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“…Acremonium cucurbitacearum is the causal agent of Acremonium collapse, a soil-borne disease affecting muskmelon and watermelon worldwide (Armengol et al, 1998;Martinez-Culebras et al, 2004). Acremonium strictum has proved to be pathogenic to sorghum, cotton, okra, shasta daisy, maize, pea and strawberry (El-Shafey et al, 1979;Chase & Munnecke, 1980;King, 1981;Kamlesh-Mathur et al, 1987;Racedo et al, 2013). A. sclerotigenum is obviously a widely distributed saprophyte (Domsch et al, 2007).…”

Section: Results and Discussion Isolation And Identity Of Causal Agenmentioning

confidence: 99%

Short communication: Dieback of rose caused by Acremonium sclerotigenum as a new causal agent of rose dieback in Iran

Mirtalebi

Banihashemi

Sabahi

et al. 2017

Span. j. agric. res.

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Severe dieback of rose has been recently observed in several rose greenhouses in Fars province of Iran. During 2014 and 2015, stems of rose plants showing yellow to brown discoloration and dieback were collected from rose greenhouses. Coniothyrium fuckelii, Botrytis cinerea and Acremonium were subsequently isolated from the margin between healthy and symptomatic tissue. B. cinerea and C. fuckelii isolates were similar to those previously reported for dieback of rose worldwide. Morphological and cultural characters along with molecular analysis based on partial sequences of the internal transcribed spacer (ITS) region of the ribosomal RNA genome allowed confirming the affiliation of the Acremonium isolates, corresponding to A. sclerotigenum as a new causal agent of rose dieback. To determine its pathogenicity on rose, Koch's postulates were fulfilled by stem inoculation of nine rose cultivars under greenhouse conditions. While A. sclerotigenum is considered as a soil-born pathogen, and produces sclerotia that are resistant to adverse conditions enables the fungus to survive extended period in soil, propagule trapping in our study revealed that conidia can become airborn, imply that an aerial phase, forms an important component of the disease cycle.

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A strawberry disease caused by Acremonium strictum

Cited by 22 publications

References 14 publications

Identification of Acremonium acutatum and Trichothecium roseum isolated from Grape with White Stain Symptom in Korea

Identification of Acremonium acutatum and Trichothecium roseum isolated from Grape with White Stain Symptom in Korea

The fungal subtilase AsES elicits a PTI‐like defence response in Arabidopsis thaliana plants independently of its enzymatic activity

Short communication: Dieback of rose caused by Acremonium sclerotigenum as a new causal agent of rose dieback in Iran

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