Seca da mangueira: VIII. Resistência de porta-enxertos de mangueira ao fungo Ceratocystis fimbriata Ell. &amp; Halst.

Ribeiro, Ivan José Antunes; Rossetto, C. J.; Sabino, José Carlos; Gallo, Paulo Boller

doi:10.1590/s0006-87051986000200010

Cited by 16 publications

(11 citation statements)

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“…Genetic variability for resistence to Ceratocystis wilt has also been described in other species as Mangifera indica (RIBEIRO et al, 1984;RIBEIRO et al, 1986;RIBEIRO et al, 1995;ROSSETTO et al, 1997), Coffea arabica (CASTILLA, 1982) and Crotalaria spp. (RIBEIRO et al, 1977).…”

Section: Discussionmentioning

confidence: 82%

Resistance to Ceratocystis Wilt (Ceratocystis fimbriata) in Parents and Progenies of Eucalyptus grandis x E. urophylla

et al. 2010

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Ceratocystis wilt, caused by Ceratocystis fimbriata, is one of the most damaging diseases in eucalyptus plantations worldwide. Although there are resistant genotypes, the genetic basis of resistance is still poorly understood. In this paper we studied the resistance level by a stem inoculation experiment of genotypes of Eucalyptus grandis and E. urophylla and estimated the heritability and gains of selection in families derived from controlled interspecific crosses. In both species, highly resistant as well as highly susceptible genotypes to Ceratocystis wilt were found. Out of 21 parents assessed, twelve were resistant and nine susceptible. Estimates of individual narrow (50 %) and broad (59 %) sense heritability suggested a high degree of genetic control and low allelic dominance of the trait. There was great genetic variation among and within families, a fact that contributes to high heritability and genetic gain. A genetic gain in lesion size of up to -74.4 % was obtained from selection of the 50 best clones in the evaluated families, i.e., the mean lesion length in the progeny population can be reduced by 74,4 %.

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Section: Discussionmentioning

confidence: 82%

Resistance to Ceratocystis Wilt (Ceratocystis fimbriata) in Parents and Progenies of Eucalyptus grandis x E. urophylla

et al. 2010

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“…Host resistance is the most common strategy to control mango wilt, especially because no fungicides have been registered to control this disease in Brazil (Ribeiro, ; Batista et al ., ). However, due to the significant genetic variability of C. fimbriata , resistant cultivars may become susceptible over time (Ribeiro et al ., ; Ribeiro, ). The eradication of mango trees showing mango wilt symptoms can also be used as a strategy to slow the progression of disease (Viégas, ; Ribeiro, ).…”

Section: Introductionmentioning

confidence: 99%

“…Information regarding the infection process of C. fimbriata in the stem tissues of mango, especially from different cultivars, and the basis of host resistance against pathogen infection at the vascular system level is rare in the literature (Ribeiro et al ., ; Al‐Sadi et al ., ). Thus, the objective of the present study was to investigate histopathologically how the infection process of two isolates of C. fimbriata with different levels of aggressiveness can be affected by mango cultivar‐specific mechanisms of resistance.…”

Section: Introductionmentioning

confidence: 99%

Histopathological aspects of mango resistance to the infection process of Ceratocystis fimbriata

et al. 2014

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Mango wilt, caused by Ceratocystis fimbriata, is one of the most important diseases affecting mango yields in Brazil. Information regarding the infection process of C. fimbriata in the stem tissues of mango from different cultivars and the basis of host resistance to the pathogen is rare in the literature. Thus, the objective of the study was to investigate how infection by two isolates of C. fimbriata can be affected by mango cultivar-specific mechanisms of resistance. Disease progress on the inoculated stem tissues of the mango cultivars was evaluated and stem sections were obtained from the site of inoculation and prepared for histopathological observations using light microscopy. The factors mango cultivars and C. fimbriata isolates and their interaction were significant for all measures of disease development. Plants from the cultivars Espada, Haden and Palmer inoculated with isolates of C. fimbriata were more susceptible, whereas plants from the cultivars Tommy and Ub a were moderately resistant and resistant, respectively. Histopathologically, fungal isolates apparently massively colonized the stem tissues of plants from the susceptible cultivars Espada, Haden and Palmer, starting from the collenchyma and moving in the direction of the cortical parenchyma, xylem vessels and pith parenchyma. By contrast, on stem tissues of plants from the resistant cultivars Tommy Atkins and Ub a, most of the cells reacted to C. fimbriata infection by accumulating amorphous material. The results from the present study strongly indicated the importance of phenolic compounds for mango cultivar resistance against infection by Brazilian C. fimbriata isolates.

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“…Ceratocystis cacaofunesta was isolated from both leaf blades and infected stems from cacao; C. fimbriata from eucalyptus, rubber, soursop, custardapple, and coffee ; as well as C. paradoxa (Dade) C. Moreau 1952, from coconut. Due to the specificity of C. cacaofunesta to T. cacao and the literature reports attributing the infection of eucalyptus, rubber, soursop and custard-apple trees and coffee plant (Ribeiro et al, 1986;Ferreira et al, 1999;Silveira et al, 1994;Trindade & Furtado, 1997;Furtado et al, 2008;Marin et al, 2003) to C. fimbriata and of coconut palm to C. paradoxa (Pinho et al, 2013), it is assumed that the method of isolation from leaves can be utilized for the three species. These three species are those which predominate as pathogens of this genus in Brazil, with C. cacaofunesta causing problems in cacao plantations, C. paradoxa in monocotyledons, and mainly C. fimbriata in herbaceous and woody plants of great economic importance such as mango, rubber and eucalyptus (Bezerra, 1997;Silveira et al, 1994;Ferreira 1999).…”

Section: Resultsmentioning

confidence: 99%

“…When the stems are cut, internal brown radial streaks from the cord to the outside of the wood can be observed at the lesion site (Ferreira and Milani, 2002;Ferreira et al, 2006). In the field, dryness can be observed in the branches progressing to the trunk and slowly killing the plant, or the infection is initiated by the plant roots, causing sudden death (Ribeiro et al, 1986). Therefore, a method that can detect the infection before the symptoms manifest and the plant dies will be of paramount importance for the disease control.…”

Section: Searching For Ceratocystis Spp In the Cacao Regionmentioning

confidence: 99%

A NEW METHOD FOR EARLY DETECTION OF Ceratocystis spp. ON VARIOUS HOSTS

Magalhães¹,

Luz²,

Lopes³

et al. 2015

Agrotropica

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Ceratocystis wilt is a lethal disease to several hosts. This study tested the isolation of Ceratocystis spp. from the leaf blade of cacao and other hosts showing yellowing and the isolates pathogenicity to their hosts. Leaves with yellowished and/or darkened areas were disinfested and placed between slices of unripe cacao pods, like a sandwich, in a BOD chamber (25 o C), for four days. Ascospores were transferred to Petri dishes containing PDA and their colonies were preserved. The presence of C. cacaofunesta in the leaf blade of cacao tree; C. paradoxa in coconut palm; and C. fimbriata in eucalyptus, rubber, soursop, custard-apple trees and coffee plants were confirmed. To test the isolates pathogenicity, culture discs or droplets of inoculum suspensions (3 × 10 4 i.u./mL) were applied in two points on leaves of each host, with and without wound, and evaluated in four to seven days. Chlorosis, lesions, mycelia and perithecia development were observed in the midrib and on blades of inoculated leaves. Therefore, an early method of detection of Ceratocystis spp. as well as another method to evaluate pathogenicity to various hosts using whole leaves of these hosts were described in this paper.

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Seca da mangueira: VIII. Resistência de porta-enxertos de mangueira ao fungo Ceratocystis fimbriata Ell. & Halst.

Cited by 16 publications

References 1 publication

Resistance to Ceratocystis Wilt (Ceratocystis fimbriata) in Parents and Progenies of Eucalyptus grandis x E. urophylla

Resistance to Ceratocystis Wilt (Ceratocystis fimbriata) in Parents and Progenies of Eucalyptus grandis x E. urophylla

Histopathological aspects of mango resistance to the infection process of Ceratocystis fimbriata

A NEW METHOD FOR EARLY DETECTION OF Ceratocystis spp. ON VARIOUS HOSTS

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