Effects of leaf scales of different pineapple cultivars on the epiphytic stage of Fusarium guttiforme

Aquije, Glória Maria de Farias Viégas; Korres, Adriana Marcia Nicolau; Buss, David S.; Ventura, José Aires; Fernandes, Patrícia Machado Bueno; Fernandes, Antônio Alberto Ribeiro

doi:10.1016/j.cropro.2010.11.025

Cited by 8 publications

(7 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Fusariosis caused by Fusarium guttiforme (formerly Fusarium moniliforme var. subglutinans, Fusarium subglutinans) appeared in Brazil in the 1960s and became the major concern for producers in that region [9][10][11][12][13]. The name "Fusarium guttiforme" brought about confusion, and some articles dealing with FCR used it to describe the pathogen [14,15].…”

Section: Introductionmentioning

confidence: 99%

Diversity and Toxigenicity of Fungi that Cause Pineapple Fruitlet Core Rot

Barral

Chillet

Doizy

et al. 2020

Toxins

View full text Add to dashboard Cite

The identity of the fungi responsible for fruitlet core rot (FCR) disease in pineapple has been the subject of investigation for some time. This study describes the diversity and toxigenic potential of fungal species causing FCR in La Reunion, an island in the Indian Ocean. One-hundred-and-fifty fungal isolates were obtained from infected and healthy fruitlets on Reunion Island and exclusively correspond to two genera of fungi: Fusarium and Talaromyces. The genus Fusarium made up 79% of the isolates, including 108 F. ananatum, 10 F. oxysporum, and one F. proliferatum. The genus Talaromyces accounted for 21% of the isolated fungi, which were all Talaromyces stollii. As the isolated fungal strains are potentially mycotoxigenic, identification and quantification of mycotoxins were carried out on naturally or artificially infected diseased fruits and under in vitro cultures of potential toxigenic isolates. Fumonisins B1 and B2 (FB1-FB2) and beauvericin (BEA) were found in infected fruitlets of pineapple and in the culture media of Fusarium species. Regarding the induction of mycotoxin in vitro, F. proliferatum produced 182 mg kg⁻1 of FB1 and F. oxysporum produced 192 mg kg⁻1 of BEA. These results provide a better understanding of the causal agents of FCR and their potential risk to pineapple consumers.

show abstract

Section: Introductionmentioning

confidence: 99%

Diversity and Toxigenicity of Fungi that Cause Pineapple Fruitlet Core Rot

Barral

Chillet

Doizy

et al. 2020

Toxins

View full text Add to dashboard Cite

show abstract

“…and susceptible leaves (Perola) showed that tolerant leaves have thicker cell wall with high cicatrisation process after inoculation test (Aquije et al, 2010) while susceptible leaf possessed higher scales which were suitable for Fusarium colonization (Aquije et al, 2011). From this study, Gandul variety seems to show better resistance to fusariosis.…”

Section: Leaves a Comparison Study Between Tolerant (Victoria)mentioning

confidence: 55%

Pathogenicity of Fusarium semitectum and Fusarium chlamydosporum associated with pineapple fusariosis

Ibrahim¹,

Masratul²,

Nor³

et al. 2016

MJM

View full text Add to dashboard Cite

Aims: Symptoms of pineapple fusariosis has been detected in several pineapple plantations in several states in Peninsular Malaysia. The main aim of this study was to identify Fusarium species associated with pineapple fusariosis based on their morphological characteristics and to test their pathogenicity. Methodology and results: Based on morphological characteristics, two Fusarium species were identified, namely F. semitectum (41 isolates) and F. chlamydosporum (13 isolates). The isolates were isolated from symptoms of pineapple fusariosis. Representative isolates of F. semitectum and F. chlamydosporum were evaluated for pathogenicity test and the results showed different pathogenic levels on pineapple leaves and fruits of Gandul, Josapine and Moris varieties. Fusarium semitectum isolates appeared to be more virulent (D.S.I = 38.89 -50.00) compared to F. chlamydosporum on both pineapple leaves and fruits. Conclusion, significance and impact of study: The present study indicated that the isolates of F. semitectum and F. chlamydosporum can cause fusariosis on three pineapple varieties, namely Gandul, Josapine and Moris in Peninsular Malaysia. The presence of both Fusarium species causing fusariosis at local pineapple plantations should be monitored and controlled as it would affect the trading of pineapples.

show abstract

“…Morphological and anatomical structures influence host plant resistance to pathogens. Aquije et al (2011) showed the structural differences between resistant and susceptible pineapple leaves to fusariose. The most recent descriptions of pineapple fruitlet core rot disease were of “Smooth Cayenne,” a moderately susceptible cultivar.…”

Section: Introductionmentioning

confidence: 99%

An Imaging Approach to Identify Mechanisms of Resistance to Pineapple Fruitlet Core Rot

et al. 2019

View full text Add to dashboard Cite

Fruitlet core rot is one of the major postharvest disease of pineapple (Ananas comosus var. comosus). In the past, control strategies were designed to eliminate symptoms without addressing their causes or mechanisms, thus achieving only moderate success. In this study, (i) we focused on the anatomy of the fruitlets in the resistant “MD-2” and susceptible “Queen” pineapple cultivars; (ii) we identified the key role of the carpel margin in the infection process; (iii) we identified the key role of the sinuous layer of thick-walled cells in the inhibition of Fusarium ananatum colonization; and (iv) we linked the anatomy of the fruitlets with the phenolic content of cell walls. The fruitlet anatomy of the two cultivars was studied using X-ray, fluorescence, and multiphoton microscopy. Sepals and bracts were not perfectly fused with each other, allowing the pathogen to penetrate the fruit even after flowering. In fact, the fungi were found in the blossom cups of both cultivars but only became pathogenic in the flesh of the “Queen” pineapple fruit under natural conditions. The outer layer of the “MD-2” cavity was continuous with thick cell walls composed of ferulic and coumaric acids. The cell walls of the “Queen” blossom cup were less lignified at the extremities, and the outer layer was interspersed with cracks. The carpel margins were fused broadly in the “MD-2” pineapple, in contrast to the “Queen” pineapple. This blemish allows the fungus to penetrate deeper into the susceptible cultivar. In pineapple fruitlets, the hyphae of F. ananatum mainly progressed directly between cell walls into the parenchyma but never reached the vascular region. A layer of thick-walled cells, in the case of the resistant cultivar, stopped the colonization, which were probably the infralocular septal nectaries. Anatomical and histochemical observations coupled with spectral analysis of the hypodermis suggested the role of lignin deposition in the resistance to F. ananatum. The major phenolics bound to the cell walls were coumaric and ferulic acids and were found in higher amounts in the resistant cultivar postinoculation. The combination of fruitlet anatomy and lignification plays a role in the mechanism of host resistance to fruitlet core rot.

show abstract

Effects of leaf scales of different pineapple cultivars on the epiphytic stage of Fusarium guttiforme

Cited by 8 publications

References 7 publications

Diversity and Toxigenicity of Fungi that Cause Pineapple Fruitlet Core Rot

Diversity and Toxigenicity of Fungi that Cause Pineapple Fruitlet Core Rot

Pathogenicity of Fusarium semitectum and Fusarium chlamydosporum associated with pineapple fusariosis

An Imaging Approach to Identify Mechanisms of Resistance to Pineapple Fruitlet Core Rot

Contact Info

Product

Resources

About