Alternaria alternata (Black Rot, Black Spot)

Troncoso‐Rojas, Rosalba; Tiznado‐Hernández, Martín Ernesto

doi:10.1016/b978-0-12-411552-1.00005-3

Cited by 66 publications

(46 citation statements)

References 159 publications

(135 reference statements)

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“…Cold storage of apple fruits under NA and CA conditions ceases the development of infection with A. alternata; therefore, the first symptoms of the infection on fruits became visible after storage, after 14 days of incubation at room temperature. However, Troncoso‐Royas and Tiznado‐Hernández () reported the occurrence of necrosis caused by A. alternata during cold storage, even at 0°C. However, Mishra and Thawani () point to poor development of A. alternata already at temperatures below 20°C compared to its excellent development at 27°C.…”

Section: Discussionmentioning

confidence: 99%

Effect of storage conditions on virulence of Fusarium avenaceum and Alternaria alternata on apple fruits

Tarlanović

Grahovac

Milić

et al. 2017

Journal of Phytopathology

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To overcome difficulty in phytopathogenic fungi control during storage of apple fruits, the effect of different storage conditions on the occurrence and development of Fusarium avenaceum and Alternaria alternata infections on apple cultivar “Cripps Pink” was investigated during and after storage. Inhibitory effects of wild oregano essential oil on apple fruit rots caused by F. avenaceum and A. alternata were also tested as possible rot control measure. Artificially inoculated apple fruits were kept in cold storage with normal (NA) and controlled (CA) atmosphere for 95 days and at room temperature only. The obtained results indicated that different storage conditions significantly affect necrosis development on apple fruits caused by F. avenaceum and A. alternata after storage, as well as during shelf life.

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Section: Discussionmentioning

confidence: 99%

Effect of storage conditions on virulence of Fusarium avenaceum and Alternaria alternata on apple fruits

Tarlanović

Grahovac

Milić

et al. 2017

Journal of Phytopathology

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“…Keissl. 1912 (Zitter andWien, 1984;Ruelas et al, 2006), which is one of the most common pathogen causing spoiled tomatoes and it is responsible for black mold disease (Troncoso-Rojas and Tiznado-Hernández, 2014). The Alternaria rot symptoms are concentric dark brown spots on the fruit surface with abundant conidia, frequently developed near the peduncle scar or at the blossom-end of the fruit (Snowdon, 2010).…”

Section: Introductionmentioning

confidence: 99%

Alterations in volatile metabolites profile of fresh tomatoes in response to Alternaria alternata (Fr.) Keissl. 1912 infection

Encinas-Basurto

Valenzuela-Quintanar

Sánchez‐Estrada

et al. 2017

Chilean J. Agric. Res.

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Alternaria alternata (Fr.) Keissl. 1912 is one of the main fungal pathogens that infect tomato (Solanum lycopersicum L.) during cold storage affecting postharvest quality and marketing. During fungal infections, fruits and fungi release specific volatile metabolites (VM) that could alter the fruit aroma, or could mediate resistance response in the fruit, or they also could suggest the possible status of fungal attack. The detection of the VM released during the tomato-Alternaria interaction could contribute to the development of ecofriendly and harmless strategies for its control. In this study, the profile of VM of fresh tomatoes inoculated with A. alternata, were analyzed by solid phase microextraction and gas chromatography-mass spectrometry (SPME-GC-MS) during storage at 15 and 20 °C for 48 h, respectively. Changes in the profile of VM were observed between control and inoculated fruit since the first few hour post-inoculation. Some VM (3-methyl-2-butenal, dimethyl disulfide, 1-butenol, hexanol, 2-methyl-1-butanol acetate, among others) were only detected in inoculated fruit, so they appear to be synthesized by the presence of the pathogen. Also, a marked increase of 3-methyl-1-butanol and 6-methyl-5-hepten-1-one were observed in inoculated fruit, and they were progressive over time particularly at 20 °C. In conclusion, A. alternata induced changes in the profile of volatile metabolites released by tomato fruit. Some of the VM released during tomato-A. alternata interaction, were synthesized or stimulated by the fungal attack. These results contribute to the current knowledge about the profile of VM released during the fruit-pathogen interaction.Key words: Volatile metabolites, fresh tomatoes, Alternaria alternata, cold storage temperatures, SPME-GC-MS. ABSTRACTAlterations in volatile metabolites profile of fresh tomatoes in response to Alternaria alternata (Fr.) Keissl. 1912 infection

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“…They have a potent fungicidal activity against a number of fungi, including Alternaria alternata [6]. A. alternata is a fungus that causes spot lesions on the leaves [9] and fruits [10] of a broad variety of hosts [11,12], and is considered an important generalist phytopathogen in the field and during postharvest. Another Alternaria species, Alternaria brassicicola is a specialist, which is infective to the plants of the genus Brassicas [13].…”

Section: Introductionmentioning

confidence: 99%

Analysis of a suppressive subtractive hybridization library of Alternaria alternata resistant to 2-propenyl isothiocyanate

García-Coronado

Troncoso‐Rojas

Tiznado‐Hernández

et al. 2015

Electronic Journal of Biotechnology

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Background: Isothiocyanates (ITCs) are natural products obtained from plants of the Brassicas family. They represent an environmentally friendly alternative for the control of phytopathogenic fungi. However, as it has been observed with synthetic fungicides, the possibility of inducing ITC-resistant strains is a major concern. It is, therefore, essential to understanding the molecular mechanisms of fungal resistance to ITCs. We analyzed a subtractive library containing 180 clones of an Alternaria alternata strain resistant to 2-propenyl ITC (2-pITC). After their sequencing, 141 expressed sequence tags (ESTs) were identified using the BlastX algorithm. The sequence assembly was carried out using CAP3 software; the functional annotation and metabolic pathways identification were performed using the Blast2GO program. Results: The bioinformatics analysis revealed 124 reads with similarities to proteins involved in transcriptional control, defense and stress pathways, cell wall integrity maintenance, detoxification, organization and cytoskeleton destabilization; exocytosis, transport, DNA damage control, ribosome maintenance, and RNA processing. In addition, transcripts corresponding to enzymes as oxidoreductases, transferases, hydrolases, lyases, and ligases, were detected. Degradation pathways for styrene, aminobenzoate, and toluene were induced, as well as the biosynthesis of phenylpropanoid and several types of N-glycan. Conclusions: The fungal response showed that natural compounds could induce tolerance/resistance mechanisms in organisms in the same manner as synthetic chemical products. The response of A. alternata to the toxicity of 2-pITC is a sophisticated phenomenon including the induction of signaling cascades targeting a broad set of cellular processes. Whole-transcriptome approaches are needed to elucidate completely the fungal response to 2-pITC.

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Alternaria alternata (Black Rot, Black Spot)

Cited by 66 publications

References 159 publications

Effect of storage conditions on virulence of Fusarium avenaceum and Alternaria alternata on apple fruits

Effect of storage conditions on virulence of Fusarium avenaceum and Alternaria alternata on apple fruits

Alterations in volatile metabolites profile of fresh tomatoes in response to Alternaria alternata (Fr.) Keissl. 1912 infection

Analysis of a suppressive subtractive hybridization library of Alternaria alternata resistant to 2-propenyl isothiocyanate

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