Mango Decline: Research in Florida on an Apparently Wide-Spread Disease Complex

Ploetz, R. C.; Benscher, D.; Vázquez, A. Suárez; Colls, A.; Nagel, Jordana Caroline; Schaffer, Bruce

doi:10.17660/actahortic.1997.455.72

Cited by 9 publications

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“…has been isolated from mango trees cv. Keitt in the state of Florida [20]. Several Cladosporium species are reported to be pathogenic microorganisms of various crops.…”

Section: Discussionmentioning

confidence: 99%

Morphological and molecular characterization ofCladosporium tenuissimumCooke (Deuteromycotina: Hyphomycetes) on mango tree panicles: symptoms, pathogenicity and severity of the fungus.

Guillén-Sánchez¹,

Yáñez‐Morales²,

Téliz-Ortiz³

et al. 2007

Fruits

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Morphological and molecular characterization of Cladosporium tenuissimum Cooke (Deuteromycotina: Hyphomycetes) on mango tree panicles: symptoms, pathogenicity and severity of the fungus. Abstract-Introduction. Mango producers of two important growing areas of the states of Guerrero and Michoacán, Mexico, reported extensive damage in mango trees caused by an abundant mycelial growth covering most diseased panicles of mango trees cv. Haden. Materials and methods. The fungus was isolated from panicles of mango. Pathogenicity was evaluated in the orchard by inoculating 20 inflorescences protected by cellophane paper bags. In vitro characterization was evaluated on monosporic cultures; conidial morphology and rate of growth were determined. A molecular characterization by DNA extraction was carried out to identify the microorganism. Results. Cladosporium tenuissimum caused necrosis of flowers, pedicels and small fruits on inoculated mango panicles cv. Haden in the long coast of Guerrero and Michoacan States of Mexico. The affected organs were covered with grey cottony mycelia and an olivaceous, green to grey sporulation. In vitro, young colonies were also olive green and velvety, turning dark green to grey with a whitish outer margin. The growth rate of colonies was 0.46 cm•day-1. Conidia were subspherical, lime-shaped and fusiform, olivaceous in color with visible scars and denticle-like extensions. The mean size of conidia was (5.85 × 2.93) µm with variations of 3.2-23 µm × 1.98-5.47 µm. The molecular characteristics rendered C. tenuissimum after identification. Symptoms of inoculated or naturally infected tree organs were similar. A diagrammatic scale was developed for the evaluation of disease severity, which varied from 69% to 100% in infected panicles. The organs were susceptible from blooming to fruit set. Discussion. Further research is proposed to evaluate the geographical distribution of C. tenuissimum in the production areas of mango with the concomitant evaluations of strategies of control. Mexico / Mangifera indica / plant diseases / Cladosporium tenuissimum / identification / symptoms Caractérisation morphologique et moléculaire de Cladosporium tenuissimum Cooke (Deuteromycotina: Hyphomycètes) sur panicules de manguier : symptômes, pathogénicité et sévérité du champignon. Résumé-Introduction. Les producteurs de mangues de deux importantes régions productrices du Mexique (États de Guerrero et de Michoacán) ont signalé la présence d'importants dommages en vergers, provoqués par une abondante croissance mycélienne couvrant la plupart des panicules malades de manguiers du cv. Haden. Matériel et méthodes. Le champignon a été isolé sur des panicules de manguier. La pathogénicité a été évaluée en verger en inoculant 20 inflorescences protégées par des sacs en papier de cellophane. La caractérisation in vitro a été évaluée sur des cultures monospores ; la morphologie et le taux de croissance des conidies ont été déterminés. Une caractérisation moléculaire par extraction d'ADN a été effectuée pour l'identificatio...

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“…has been isolated from mango trees cv. Keitt in the state of Florida [20]. Several Cladosporium species are reported to be pathogenic microorganisms of various crops.…”

Section: Discussionmentioning

confidence: 99%

Morphological and molecular characterization ofCladosporium tenuissimumCooke (Deuteromycotina: Hyphomycetes) on mango tree panicles: symptoms, pathogenicity and severity of the fungus.

Guillén-Sánchez¹,

Yáñez‐Morales²,

Téliz-Ortiz³

et al. 2007

Fruits

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“…This observation agrees with the findings of Refs. [32,33], who reported that leaves of trees affected by MSD include defoliation, vascular discoloration, and marginal chlorosis.…”

Section: Discussionmentioning

confidence: 99%

Micronutrients Foliar and Drench Application Mitigate Mango Sudden Decline Disorder and Impact Fruit Yield

et al. 2022

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Mango sudden death (MSD) or quick decline (QD) is the most destructive disease found in mango orchards of Pakistan and is characterized by collapse of the vascular system by Ceratocystis fimbriata and Lasiodiplodia theobromae. Cultural practices, chemicals, and biological control are the most valuable tools for the management of MSD, but the role of micronutrient deficiencies has remained an area that is heavily ignored by the farming community. To study the impact of micronutrients, four mango orchards were selected at different locations where different combinations of micronutrients, i.e., Zinc (Zn), Boran (B), and Copper (Cu) in the form of Zinc sulphate (ZnSO4), Borax/Boric acid (H3BO3), and Copper Sulphate (CuSO4), were applied both foliar and in drench along with the recommended doses of Nitrogen: Phosphorous: Potassium (NPK), and Farmyard manure (FYM), respectively. The quantities of micronutrients were determined from the soil and leaves before and after application of the treatments. The impact of micronutrients was measured in terms of reduction in disease severity and increase in fruit yield. The results revealed that the application of all three micronutrients both in soil drench and in foliar form significantly decreased the disease severity at three locations and increased the yield in all four mango orchards. Application of ZnSO4 (0.8%), +H3BO3 (0.8%), +CuSO4 (0.5%) and as soil drench ZnSO4 (400 g) + Borax (200 g) + CuSO4 200 g plant−1 proved to be the best treatments, with an average of 12.88 and 14.03% reduction in disease severity and with an average yield of 128 and 119 kg, respectively. The application of micronutrients would be a promising solution in an integrated disease management program used to tackle MSD.

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“…Lesions develop primarily on young tissue and conidia are formed and can be observed in lesions of all ages. Under favourable conditions conidia are strewn and invade young twigs causing twig die back in some cases 47 . Relative humidity >95 per cent for at least 12 hours is essential for infection and development of C. gloeosporioides on mango fruit.…”

Section: Disease Symptommentioning

confidence: 99%

Anthracnose of Mango Incited by Colletotrichum gloeosporioides : A Comprehensive Review

Kumari¹

2017

Int. J. Pure App. Biosci.

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Mango (Mangifera indica L.) is one of the world's most important and esteemed fruits of the tropical and subtropical countries. By the virtue of its wide range, delicious taste, superb flavour, very high nutritive and medicinal value as well as great religio-historical significance, it is called the "King of the fruits". Mango is affected by a number of diseases at all stages of the development right from nursery to post harvest including storage and transit. Its production is drastically affected by Colletotrichum gloeosporioides, is one of the most damaging pathogen cause mango anthracnose. This paper reviews the research and development of Anthracnose of mango during the precedent in relation to pathogen taxonomy, distribution, biology, disease cycle and management.

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Mango Decline: Research in Florida on an Apparently Wide-Spread Disease Complex

Cited by 9 publications

References 0 publications

Morphological and molecular characterization ofCladosporium tenuissimumCooke (Deuteromycotina: Hyphomycetes) on mango tree panicles: symptoms, pathogenicity and severity of the fungus.

Morphological and molecular characterization ofCladosporium tenuissimumCooke (Deuteromycotina: Hyphomycetes) on mango tree panicles: symptoms, pathogenicity and severity of the fungus.

Micronutrients Foliar and Drench Application Mitigate Mango Sudden Decline Disorder and Impact Fruit Yield

Anthracnose of Mango Incited by Colletotrichum gloeosporioides : A Comprehensive Review

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