Studies on Mango Malformation in the Mango Clone, Chiratpudi

Das, Gaurangakumar; Rao, D. P.; Lenka, P. C.

doi:10.17660/actahortic.1989.231.55

Cited by 3 publications

(4 citation statements)

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“…Chaunsa) in screen houses and arranged in triplicate. In each case plants were sprayed with Metasystox (Bayer) and Carbendazim (Agrevo) to prevent mite and Fusarium infection, respectively (Das et al 1989). The inoculum, containing 10 5 conidia per ml of water (measured using a haemocytometer), was applied by spore spray, carborundum abrasion and wounding as described by Ploetz and Gregory (1993).…”

Section: Pathogenicity Studiesmentioning

confidence: 99%

“…MM has been attributed to various causes including viral (Das et al 1989), nutritional (Prasad et al 1965) and hormonal (Dang and Daulta 1982). A novel experiment by Freeman et al (1999) unequivocally proved the causal relationship between Fusarium subglutinans (Wollenweb & Reinking) and MM, fulfilling Koch's postulates for both forms of the disease.…”

Section: Introductionmentioning

confidence: 99%

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RAPD analysis of Fusarium Isolates Causing “Mango Malformation” Disease in Pakistan

Iqbal¹,

Rahman

Dasti

et al. 2006

World J Microbiol Biotechnol

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Mango Malformation (MM) disease is a major constraint to mango production. A total of 20 Fusarium isolates from MM-affected mango plants were collected from 14 locations in Pakistan and assessed for genetic diversity using the random amplified polymorphic DNA (RAPD) technique. A total of 393 fragments were amplified after screening with 50 random primers. The amplifications with 45 primers identified scoreable polymorphisms among the isolates. A genetic similarity matrix based on Nei and Li's index determined coefficients ranging from 46.46% to 92.51%. These coefficients were used to construct a dendrogram using the UPGMA algorithm. The isolates grouped into two main clusters, comprising 13 and 7 isolates respectively, at a genetic relatedness of 52%. Within the clusters, Fusarium isolates were not necessarily related either by geographic origin or by the mango cultivar from which they were isolated. RAPD proved a reproducible and tractable means of differentiating Fusarium isolates. These findings also suggest that some infections originate not from adjacent plants within an orchard but from geographically distant areas; indicating that most probably infection occurs in nurseries prior to plants being transported around the country for subsequent cultivation, and that improved plant hygiene could significantly curb MM infection and spread.

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Section: Pathogenicity Studiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

RAPD analysis of Fusarium Isolates Causing “Mango Malformation” Disease in Pakistan

Iqbal¹,

Rahman

Dasti

et al. 2006

World J Microbiol Biotechnol

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“…It also affects floral panicles causing deformation and hypertrophy (Ploetz, 1994 al., 2000). Etiologies like viral (Das et al, 1989), acarological and physiological (Sattar, 1946) were claimed previously but rejected due to lack of etiological association. Examination of Fusarium strains isolated from malformed inflorescences of diverse international origins has explored new taxa; F. mangiferae relates to strains previously identified as F. subglutinans and regarded responsible for causing MMD worldwide (Britz et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

Mango Inflorescence Midge (Erosomyia indica Felt) as possible vector of Fusarium mangiferae Britz, the causal agent of Mango Malformation Disease

Atif¹,

Naqvi²,

Perveen³

2015

Int. J. Biosci.

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Mango is a matchless species in fruit trees with respect to specific nature, growth and diversity. This current study was conducted to determine the potential role of mango inflorescence midge as a possible vector of the Fusarium mangiferae Britz. The pathogen was isolated under in-vitro on potato dextrose agar media from various samples of the symptomatic, asymptomatic inflorescence and mango inflorescence midge samples. The results of the isolation of F. mangiferae Britz from symptomatic inflorescence showed maximum recovery from treatment 04, with 83.77% infection frequency. Alternaria alternata ranked second with infection frequency 35.55%. Similarly, the isolation frequency of F. mangiferae Britz from asymptomatic samples was calculated 65.92, 65.92 and 62.25% respectively, from treatment 03, 05 and 04 and A. alternata with 35.55% infection frequency. Isolation frequency of F. mangiferae Britz from mango inflorescence midges (Erosomyia indica Felt) showed maximum recovery of the problematic fungi i.e., F. mangiferae Britz from treatment 04 and 03 and 05 with 96.55, 93.44 and 84.44% respectively. F. mangiferae Britz was the only isolated fungi from the mango midge samples which showed this insect to be the vectors of the fungi as a source of dispersal in the orchards of mango. The present study may be concluded with the fact that E. indica Felt is the possible vector of the F. mangiferae Britz which carry it towards the healthy inflorescence from the diseased ones and the infectivity and dominant association of F. mangiferae Britz with malformed tissues.

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“…The disease affects vegetative shoots and floral panicles resulting in phyllody and hypertrophy (Singh and Dhillon 1990a;Ploetz 1994). Various aetiologies, including viral (Das et al 1989), nutritional (Prashad et al 1965;Singh et al 1991) and hormonal (Singh and Dhillon 1987, 1988, 1990b, have previously been claimed in the literature. A novel experiment by Freeman et al (1999) unequivocally proved the causal relationship between Fusarium subglutinans (Wollenweb.…”

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confidence: 99%

Cytology of infection of Fusarium mangiferae Britz in different malformed reproductive parts of mango

et al. 2010

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Aetiology of mango malformation (MM) has intrigued the scientists since its inception. The objective of the study was to glean an insight into association of the fungus, Fusarium mangiferae, with different malformed regions, viz. panicle-shoot juncture, apical buds, primary and secondary peduncles, in five exotic mango cultivars. Tissue assays revealed an infection of 88.5, 84.75 and 82.5% in cvs Zill, Sensation and Tommy Atkins, respectively. Least infection of 69.75% was found in cv. Keitt. No exotic cultivar was found to be free of fungal infection. Apical buds proved to be the potential infection site of the fungus amongst the four malformed regions, hosting maximum withintissue infection of 86.2%. Determination of F. mangiferae at proximal and distant sites of the malformed panicles exhibited maximum recovery of 82.0% at 0 cm and only 3% at >30 cm distance beneath the panicle. In the case of non-malformed panicles, an infection of 14.0% was recorded at 0 cm distance while no detection could be made from non-malformed branches. Moreover, examination of ultra-thin bud sections under Transmission Electron Microscopy (TEM) revealed inter-and intra-cellular ramification of fungal hyphae, indicating fungal ingress in malformed bud tissues of local cv. Malda. The present studies explored the sites hosting the causal fungus in mango and provide convincing evidence that F. mangiferae is responsible for turning healthy tissues into the malformed condition. These findings suggest that inoculum specific management strategies are needed in future to curb malformation disease in mango orchards.

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Studies on Mango Malformation in the Mango Clone, Chiratpudi

Cited by 3 publications

References 0 publications

RAPD analysis of Fusarium Isolates Causing “Mango Malformation” Disease in Pakistan

RAPD analysis of Fusarium Isolates Causing “Mango Malformation” Disease in Pakistan

Mango Inflorescence Midge (Erosomyia indica Felt) as possible vector of Fusarium mangiferae Britz, the causal agent of Mango Malformation Disease

Cytology of infection of Fusarium mangiferae Britz in different malformed reproductive parts of mango

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