Results 201 to 210 of about 14,062 (227)

Polyphenoloxidase activity in coffee leaves and its role in resistance against the coffee leaf miner and coffee leaf rust

Phytochemistry, 2006
In plants, PPO has been related to defense mechanism against pathogens and insects and this role was investigated in coffee trees regarding resistance against a leaf miner and coffee leaf rust disease. PPO activity was evaluated in different genotypes and in relation to methyl-jasmonate (Meja) treatment and mechanical damage.
Geraldo Aclécio, Melo, Milton Massao, Shimizu, Paulo, Mazzafera   +2 more
openaire   +4 more sources

Genetically modified coffee plants expressing the Bacillus thuringiensis cry 1Ac gene for resistance to leaf miner [PDF]

Plant Cell Reports, 2000
 A synthetic version of the cry1Ac gene of Bacillus thuringiensis has been used for the transformation of coffee species (Coffea canephora and C. arabica) to confer resistance to an important pest, the coffee leaf miner (Perileucoptera coffeella and other Leucoptera spp).
Leroy, Thierry, Henry, A.M., Royer, Monique, Altosaar, Illimar, Frutos, Roger, Duris, Daniel, Philippe, René   +6 more
openaire   +4 more sources

Is Ceraeochrysa cubana a coffee leaf miner predator?

Biological Control, 2021
Abstract Coffee leaf miner (CLM), Leucoptera coffeella, is a key pest of unshaded coffee in hot, dry neotropical production areas. Control is hampered by CLM mining behavior that reduces biological control and pesticide efficacy. Therefore, finding natural enemies that can efficiently control CLM could improve conservation and augmentative biological
Elem F. Martins, Mayara L. Franzin, André L. Perez, Jason M. Schmidt, Madelaine Venzon   +4 more
openaire   +1 more source

Genetically modified coffee trees resistant to the coffee leaf miner, Perileucoptera coffeella

Journal of Chemical Ecology, 1999
A synthetic version of the Bacillus thuringiensis cry1Ac gene was used in transformation of coffee species (Coffea canephora and Coffea arabica) to confer resistance to an important pest in South America and East Africa, the coffee leaf miner (Perileucoptera coffeella and other Leucoptera spp.).
Leroy, Thierry, Henry, A.M., Philippe, René, Royer, Monique, Deshayes, Alain, Frutos, Roger, Duris, Daniel, Dufour, Magali, Tessereau, Sylviane, Jourdan, Isabelle, Bossard, G., Lacombe, Catherine, Fenouillet, Catherine   +12 more
openaire   +4 more sources

Prediction of outbreaks of coffee leaf-miners on Kilimanjaro

Bulletin of Entomological Research, 1969
Analysis of the results obtained from suction-trap catches of the coffee leaf-miners, Leucoptera meyricki Ghesq. and L. caffeina Wshbn. on an unsprayed block of coffee at the Coffee Eesearch Station, Lyamungu, on the slopes of Kilimanjaro, are given.By thermal summation methods it was possible to delimit successive generations of moths with some degree
M. Bigger, R. G. Tapley
openaire   +1 more source

Development of Coffee Trees Resistant to Leaf Miner

2000
The production of coffee in Brazil reached 34 million bags in 1999 being 29,5 million from Coffea arabica cultivars. Since all such cultivars are susceptible to leaf miner (Perileucoptera coffeella), the main pest in Brazil, the yield and economic losses are considerable.
O. Guerreiro-Filho, H. P. Medina-Filho, L. C. Fazuoli, W. Gonçalves   +3 more
openaire   +1 more source

Plants for fitness enhancement of a coffee leaf miner parasitoid

2022
Conservative biological control aims to enhance the pest control through the conservation of natural enemies in the field, one of the strategies used is to introduce or manage plants that provide food for natural enemies. The effect of feeding resources on the fitness of a coffee leaf miner parasitoid Proacrias coffeae was assessed.
openaire   +1 more source

Hidden target, hidden effects: chlorantraniliprole on the coffee leaf miner (Leucoptera coffeella)

Ecotoxicology
Agricultural insecticide usage presents a complex challenge, particularly when addressing hidden targets such as concealed pest species. Typically, insecticide spraying targets either the host plant or the soil substrate, reaching the target when the pests move or feed, yet their vulnerability when concealed remains low.
D. S. Souza, C. A. D. Nascimento, J. Broêtto, M. T. C. S. Resende, L. S. Carneiro, M. A. Castellani, J. E. Serrão, R. N. C. Guedes   +7 more
openaire   +2 more sources

Mineral Nutrition of Coffee. Preliminary Results with the Leaf Analysis Technique

East African Agricultural and Forestry Journal, 1961
(1961). Mineral Nutrition of Coffee. Preliminary Results with the Leaf Analysis Technique. East African Agricultural and Forestry Journal: Vol. 27, No. 1, pp. 1-9.
openaire   +1 more source

Leaf alkaloids, phenolics, and coffee resistance to the leaf miner Leucoptera coffeella (Lepidoptera: Lyonetiidae).

Journal of economic entomology, 2010
Coffee (Coffea spp.) alkaloids (caffeine and related methylxanthines) and phenolics (caffeic and chlorogenic acids) have recognized pestistatic/pesticidal activity and mediate insect-plant interactions. The present investigation assessed the resistance of 12 coffee genotypes to the leaf miner Leucoptera (= Perileucoptera) coffeella (Guérin-Méneville ...
S T V, Magalhães, F L, Fernandes, A J, Demuner, M C, Picanço, R N C, Guedes   +4 more
openaire   +1 more source