Two new <i>Ceratocystis</i> species associated with mango disease in Brazil

Wyk, Marelize Van; Wingfield, Brenda D.; Al-Adawi, Ali O.; Rossetto, C. J.; Ito, Margarida Fumiko; Wingfield, Michael J.

doi:10.5248/117.381

Cited by 27 publications

(30 citation statements)

References 29 publications

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“…Após a avaliação da resistência de mudas VAN WYK et al, 2008;2011). O patógeno foi inicialmente cultivado em meio de cultura batata-dextrose-ágar (BDA) e transferido para o meio líquido composto por batata-dextrose (BD).…”

Section: Methodsunclassified

Seca-da-mangueira XXII: sobrevivência de variedades poliembriônicas

Galli¹,

Martins²,

Ito

et al. 2011

Rev. Bras. Frutic.

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RESUMO -A doença seca-da-mangueira é causada pelo fungo Ceratocystis spp., que provoca a morte de mangueiras em diversos estados brasileiros. O objetivo do trabalho foi avaliar a sobrevivência de variedades de mangueira, utilizadas como porta-enxertos, em condições de campo e casa de vegetação. Variedades poliembriônicas de mangueira foram testadas para resistência a Ceratocystis spp.pelo método de inoculação do fungo via solo, em casa de vegetação. As plantas sobreviventes foram plantadas como pé-franco na Estação Experimental de Pindorama (IAC), e as consideradas promissoras foram multiplicadas por enxertia em diversos porta-enxertos. Após 17 anos do plantio, avaliou-se o número de plantas mortas e verificou-se que, para o porta-enxerto Manila , considerado resistente, todas as plantas estavam vivas, enquanto Coquinho, considerado suscetível, apresentou 58,3% de plantas mortas. Dois isolados de C. mangicola M. van Wyk and M.J. Wingf. foram utilizados para avaliar a resistência das variedades de mangueira, em casa de vegetação. O patógeno foi cultivado em meio de cultura BDA e transferido para o meio líquido BD. Foram realizadas oito inoculações sucessivas, com intervalo mínimo de 30 dias. As avaliações foram realizadas pelas porcentagens de plantas mortas. O delineamento experimental utilizado foi blocos ao acaso, com 15 variedades e quatro repetições. O método de inoculação via rega de solo, com 5 mL de inóculo à concentração de 10 6 esporos . mL -1 foi eficiente para selecionar porta-enxertos de mangueira resistentes a C. mangicola. As variedades Vitória, IAC 112, Dura e Bocado mostraram ser resistentes ao isolado de C. mangicola neste experimento. A variedade Juliana apresentou o mesmo nível de suscetibilidade da variedade Coquinho. Recomenda-se evitar essas duas variedades para uso como porta-enxertos em áreas onde ocorre a doença. Termos para indexação: Ceratocystis mangicola, resistência, porta-enxertos, Mangifera indica L. MANGO WILT XXII. SURVIVAL OF POLIEMBRIONIC VARIETIESABSTRACT -The mango wilt is a disease caused by the fungus Ceratocystis spp., causing the death of mango trees in several Brazilian States. The objective of the present study was to evaluate the survival of varieties used as rootstocks under field and greenhouse conditions. Poliembrionic varieties were tested for resistance to Ceratocystis spp., with the inoculation method of the fungus in the soil in greenhouse. The surviving plants were planted in the Experimental Station of Pindorama and those considered promising were multiplied by grafting utilizing different rootstocks. After 17 years of the planting, an inventory of dead plants was made in the area. The rootstock Manila considered resistant to Ceratocystis had zero deaths and the rootstock Coquinho considered susceptible had 58.3% deaths. Two isolates of C. mangicola M. van Wyk and M.J. Wingf. were used to evaluate the varietal resistance in the greenhouse. The pathogen was cultivated in PDA medium and transferred for the liquid medium. Eight inoculations were accomplished wit...

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Section: Methodsunclassified

Seca-da-mangueira XXII: sobrevivência de variedades poliembriônicas

Galli¹,

Martins²,

Ito

et al. 2011

Rev. Bras. Frutic.

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“…The causal agent of the disease in Brazil resides in the C. fimbriata complex that is believed to include a number of distinct taxa (Van Wyk et al 2007;Harrington et al 2011;Van Wyk et al 2011;Van Wyk et al 2013) but the relatedness of these to C. manginecans remains to be fully resolved. The purported vector of C. manginecans in Oman, H. mangiferae is also associated with mango wilt in Brazil 3 (Castro 1960;Rossetto et al 1980;Al Adawi et al 2013a) where it is considered an invasive alien species.…”

Section: Introductionmentioning

confidence: 99%

“…The varieties Coração Boi, Espada, Ubá and Vitória were resistant to one strain but susceptible to the second (Ribeiro 1993;Ribeiro et al 1995). Given the fact that the pathogen/s in Brazil may encompass a number of discrete taxa or is one having considerable genetic variability (Harrington et al 2011;Van Wyk et al 2011), information on population genetic structure will be important for the development of effective management strategies for mango wilt disease in Oman, Pakistan and elsewhere (McDonald 1997;McDonald and Linde 2002;Milgroom and Peever 2003).…”

Section: Introductionmentioning

confidence: 99%

Clonal structure of Ceratocystis manginecans populations from mango wilt disease in Oman and Pakistan

Adawi

Barnes

Khan³

et al. 2014

Australasian Plant Pathol.

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Ceratocystis manginecans has recently been described from Oman and Pakistan where the fungus causes a serious wilt disease of mango. In both countries, the disease has moved rapidly throughout mango producing areas leading to the mortality of thousands of mango trees. The disease is associated with the infestation of the wood-boring beetle Hypocryphalus mangiferae that consistently carries C. manginecans. The aim of this study was to consider the population structure of C. manginecans isolated from Oman and Pakistan using microsatellite markers and amplified fragment length polymorphisms (AFLPs).

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“…Some of these problems, such as Dutch elm disease (DED), have a long history, have been extensively researched, and are fairly well understood (23,56,70,113,149,168,169). In contrast, other similar diseases developed recently and are poorly or partially understood (2,3,42,51,73,89,94,98,114,127,137,154,158, 164,165). Significant data gaps may exist for the ecology, epidemiology and management of the latter diseases.…”

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confidence: 99%

“…causes lethal canker and wilt diseases of economically important new encounter hosts (47, 140), but it is a non-aggressive colonizer of wounds on the original hosts in their native ranges (78,156,173). Ceratocystis fimbriata s. l. includes many tree pathogens (40,41,78,87,156,(163)(164)(165)172). The wide host range of C. fimbriata s. l. led Webster and Butler (171) to propose that it was a species complex, a view that has continued to develop (140).…”

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confidence: 99%

Destructive Tree Diseases Associated with Ambrosia and Bark Beetles: Black Swan Events in Tree Pathology?

et al. 2013

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Diseases that are associated with ambrosia and bark beetles comprise some of the most significant problems that have emerged on trees in the last century. They are caused by fungi in the Ophiostomatales, Microascales and Hypocreales, and have vectors in the Scolytinae (ambrosia and bark beetles), Platypodinae (ambrosia beetles) and Hylesininae (bark beetles) subfamilies of the Curculionidae (Coleoptera) (73,102,144). Some of these problems, such as Dutch elm disease (DED), have a long history, have been extensively researched, and are fairly well understood (23,56,70,113,149,168,169). In contrast, other similar diseases developed recently and are poorly or partially understood (2,3,42,51,73,89,94,98,114,127,137,154,158, 164,165). Significant data gaps may exist for the ecology, epidemiology and management of the latter diseases.The emergence and unexpected importance of these tree diseases are discussed in thisarticle. An underlying factor in most of these interactions is the absence of a coevolved history between the so-called "naïve" or "new encounter" host trees and the pathogens and/or beetles (27,128,174). For the ambrosia beetles, these interactions are associated with susceptibility to what are typically benign fungi and atypical relationships with healthy trees (ambrosia beetles favor trees that are dead or stressed). Interestingly, the pathogens for both the ambrosia and bark beetle-associated diseases often have symbiotic relationships with the insects that are not based on phytopathogenicity. Some of the most alarming and damaging of these diseases are considered below as "black swan events" (155).Black Swans. Before 1697, improbable events and situations in Europe were known as "black swans" (at the time, all swans known to Europeans were white) (134). In that year, the black swan, Cygnus atratus, was discovered in Western Australia (38). Thereafter, "black swan" developed as a metaphor for a supposed impossibility that is contradicted with new information.For example, John Stuart Mill used black swan logical fallacy when identifying falsification, a key component in the scientific method (68).In a recent book, Taleb (155) developed Black Swan Theory (BST). Unlike the "black swan" to which Mill referred (68), BST focuses on unexpected events of large magnitude and consequence (155). Taleb (155) recognized such events in diverse fields including finance, history, science and technology. He suggested that black swan events: 1) have extreme impacts; 2) lie outside the realm of regular expectations (they are rare); and 3) are unpredictable.Although all ambrosia and bark beetle-associated diseases are not black swan events, several do fulfill the above criteria since they have large impacts, are uncommon surprises and are unpredictable (2,3,51,56,73,89,94,98,114,137,154,158, 164,165) (Table 1). They are typically understood and appreciated only with the benefit of hindsight and subsequent research.The Beetles and Beetle-associated Tree Diseases. The order Coleoptera contains more species than any other or...

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Two new Ceratocystis species associated with mango disease in Brazil

Cited by 27 publications

References 29 publications

Seca-da-mangueira XXII: sobrevivência de variedades poliembriônicas

Seca-da-mangueira XXII: sobrevivência de variedades poliembriônicas

Clonal structure of Ceratocystis manginecans populations from mango wilt disease in Oman and Pakistan

Destructive Tree Diseases Associated with Ambrosia and Bark Beetles: Black Swan Events in Tree Pathology?

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