Investigations on a disease of Coffea arabica caused by a form of Colletotrichum coffeanum Noack

Nutman, F. J.; Roberts, F. M.

doi:10.1016/s0007-1536(61)80050-8

Cited by 40 publications

(14 citation statements)

References 4 publications

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“…Nutman and Roberts (1960) found that extracts from the resistant variety Blue Mountain had a stimulatory effect on the infection process in contrast to what happened with the susceptible variety Harar. However, Steiner (1972) concluded that surface wax extracted with chloroform from green berries of Rume Sudan and Blue Mountain contain substances that significantly decreased conidial germination and may contribute towards the high levels of field resistance to C. kahawae shown by these varieties.…”

Section: Cytological and Biochemical Resistance Mechanismsmentioning

confidence: 92%

“…In Kenya, "Geisha 10" and "Blue Mountain" K7, Rume Sudan, and also some progenies of "Hibrido de Timor" (HDT) have more resistance than "Harar" and "Bourbon". The high levels of resistance were found in Rume Sudan (Rayner, 1952;Nutman and Roberts, 1960;Firman, 1964;Gibs, 1968;Firman and Waller, 1977;van der Vossen, 1985;van der Vossen et al, 1976;van der Vossen and Walyaro, 1980). The rapid outbreaks of CBD in Eastern Africa prompted some countries to carry out hybridisation programmes with the objective of combining yield with resistance to CBD and coffee leaf rust (CLR) as in Kenya and Tanzania.…”

Section: Coffee Breeding For Resistancementioning

confidence: 99%

“…The coffee berry cuticle could act as a physical barrier to the penetrating pathogen. Nutman and Roberts (1960) among others observed that removal of the epidermis of green coffee berries, in comparison with unwounded ones, transformed resistant varieties, such as Blue Mountain and Kent, as susceptible as the var. Harar.…”

Section: Cytological and Biochemical Resistance Mechanismsmentioning

confidence: 99%

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Coffee resistance to the main diseases: leaf rust and coffee berry disease

Silva

Várzea

Guerra‐Guimarães

et al. 2006

Braz. J. Plant Physiol.

188

147

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Considerable success has been obtained in the use of classical breeding to control economically important plant diseases, such as the coffee leaf rust and the coffee berry disease (CBD). There is a strong consensus that growing genetically resistant varieties is the most appropriate cost effective means of managing plant diseases and is one of the key components of crop improvement. It has also been recognized that a better knowledge of both, the pathogens and the plant defence mechanisms will allow the development of novel approaches to enhance the durability of resistance. After a brief description of concepts in the field of plant disease resistance, we attempt to give a view of the research progress on coffee leaf rust and CBD concerned with the pathogens infection and variability, coffee breeding for resistance and coffee resistance mechanisms. Key words: Coffea, Colletotrichum kahawae, Hemileia vastatrix, coffee breeding, resistance.Resistência do cafeeiro para suas principais doenças: ferrugem alaranjada das folhas e antracnose dos frutos: Sucesso considerável tem sido obtido no uso do melhoramento clássico para o controle de doenças de plantas economicamente importantes, tais como a ferrugem alaranjada das folhas e a antracnose dos frutos do cafeeiro (CBD). Há um grande consenso de que o uso de plantas geneticamente resistentes é o meio mais apropriado e eficaz em termos de custos do controle das doenças das plantas, sendo também um dos elementos chave do melhoramento da produção agrícola. Tem sido também reconhecido que um melhor conhecimento do agente patogênico e dos mecanismos de defesa das plantas permitirá o desenvolvimento de novas abordagens no sentido de aumentar a durabilidade da resistência. Após uma breve descrição de conceitos na área da resistência das plantas às doenças, nesta revisão tentou-se dar uma idéia do progresso na investigação da ferrugem alaranjada do cafeeiro e do CBD relativamente ao processo de infecção e variabilidade dos agentes patogênicos, melhoramento do cafeeiro para a resistência e mecanismos de resistência do cafeeiro. Palavras-chave: Coffea, Colletotrichum kahawae, Hemileia vastatrix, melhoramento do cafeeiro, resistência.

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Section: Cytological and Biochemical Resistance Mechanismsmentioning

confidence: 92%

Section: Coffee Breeding For Resistancementioning

confidence: 99%

Section: Cytological and Biochemical Resistance Mechanismsmentioning

confidence: 99%

See 1 more Smart Citation

Coffee resistance to the main diseases: leaf rust and coffee berry disease

Silva

Várzea

Guerra‐Guimarães

et al. 2006

Braz. J. Plant Physiol.

188

147

View full text Add to dashboard Cite

show abstract

“…Nutman and Roberts' (1960) contention that preformed chemical substances in the cuticle could play a role in CBD resistance was investigated by Steiner (1972) and Lampard and Carter (1973). They confirmed the presence of antifungal compounds in the cuticular wax layers of green berries of certain coffee varieties, which reduced in vitro germination of the pathogen, but they failed to establish a close relation between the concentration of such substances and the level of mature plant resistance.…”

Section: Introductionmentioning

confidence: 99%

Evidence of cork barrier formation as a resistance mechanism to berry disease (Colletotrichum coffeanum) in arabica coffee

Masaba

Vossen

1982

Netherlands Journal of Plant Pathology

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The histology of resistance to coffee berry disease (CBD) was studied in artificially inoculated berries and hypocotyls of 6-week old seedlings of a number of varieties of Coffea arabica L. In resistant varieties a phellogen was quickly formed some cell layers below the site of infection and progress of the fungal invasion was effectively blocked by a complete barrier of suberized cells. Such barriers were absent or incompletely developed in CBD susceptible varieties. A highly significant correlation (r = 0.87) was found between the frequencies of complete barrier formation in berries and in hypocotyls of young seedlings, while both were also highly correlated to observed mature plant resistance (r _> 0.93). Resistance to CBD in arabica coffee may to an important extent be based on the formation of cork barriers. These cork barriers confine the pathogen to the small volume of tissue external to the barrier so that its growth is severely restricted. Such a resistance mechanism is likely to be stable (race-nonspecific). The almost identical response to infection observed in berries and hypocotyls provides further evidence that plants with resistance to CBD can be reliably preselected by the hypocotyl inoculation test.

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“…The expanding berry (4-16 weeks after flowering) is the most susceptible stage; this is unlike fully expanded green berries, which are resistant (Mulinge, 1970). The presence of free water (rain, mist or dew) on berry surfaces and temperatures between 21 and 23 ºC are favourable condition for infection and development of epidemics (Nutman & Roberts, 1960;Bock, 1956). Incubation period varies between 3 days with soft green berries (Bock, 1956) to 3 weeks with hard green berries (Mulinge, 1970).…”

Section: Discussionmentioning

confidence: 99%

Responses of Compact Coffee Clones Against Coffee Berry and Coffee Leaf Rust Diseases in Tanzania

Kilambo¹,

Rebeun²,

Mamiro³

2013

JPS

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The utilization of resistant Arabica coffee (Coffea arabica) varieties is considered as the most economical control for coffee berry disease (CBD) and coffee leaf rust (CLR) in Tanzania. The resistance levels of varieties at field and laboratory conditions were assessed through their phenotypic disease reaction response to CBD and CLR. In this study sixteen (16) compact hybrids of C. arabica plus four (4) standard cultivars were evaluated under a range of environmental conditions in on-station and on-farm trials in Tanzania. Also four (4) Colletotrichum kahawae strains of the pathogen responsible for CBD infection;

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Investigations on a disease of Coffea arabica caused by a form of Colletotrichum coffeanum Noack

Cited by 40 publications

References 4 publications

Coffee resistance to the main diseases: leaf rust and coffee berry disease

Coffee resistance to the main diseases: leaf rust and coffee berry disease

Evidence of cork barrier formation as a resistance mechanism to berry disease (Colletotrichum coffeanum) in arabica coffee

Responses of Compact Coffee Clones Against Coffee Berry and Coffee Leaf Rust Diseases in Tanzania

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