Coffee leaf miner resistance

Filho, Oliveiro Guerreiro

doi:10.1590/s1677-04202006000100009

Cited by 53 publications

(35 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This is favorable to coffee vegetative growth due to the consecutive emission of new leaves (Blanco et al, 2003;Conceição et al, 2005). The first new leaf pairs sprouted by the plant are usually not used by L. coffeella females for oviposition and, when they are used, there is an increase in larval mortality and a decrease in egg hatching, which reduces adult fertility (Guerreiro Filho, 2006). Plant density only had significant effects in the months of increased pest occurrence.…”

Section: Resultsmentioning

confidence: 99%

Leaf miner incidence in coffee plants under different drip irrigation regimes and planting densities

Assis

Assis²,

Scalco

et al. 2012

Pesq. agropec. bras.

View full text Add to dashboard Cite

-The objective of this work was to evaluate the effect of different drip irrigation regimes and planting densities on the incidence of the leaf miner, Leucoptera coffeella, in arabica coffee plants for one year. The experiment was carried out in 2008, in a complete randomized block design, in a split-plot in time arrangement, with four replicates. The treatments consisted of four drip irrigation regimes -soil water balance, irrigations at 20 and 60 kPa soil tensions, and a nonirrigated treatment -, which were distributed at three plant densities: 2,500, 5,000, and 10,000 plants per hectare. The evaluations were made on a monthly basis between January and December 2008. The highest pest occurrence period was from August to November, a season with low-air relative humidity preceded by a drought period. Irrigated coffee plants showed an incidence of intact mines 2.2 times lower than that of nonirrigated plants. Irrigation and increasing of plant density contribute to the reduction of coffee leaf miner occurrence.

show abstract

Section: Resultsmentioning

confidence: 99%

Leaf miner incidence in coffee plants under different drip irrigation regimes and planting densities

Assis

Assis²,

Scalco

et al. 2012

Pesq. agropec. bras.

View full text Add to dashboard Cite

show abstract

“…Thus, great effort has continuously been made to improve the efficiency of the Brazilian coffee production sector, especially by solving phytosanitary problems caused by pests like the coffee leaf miner, Leucoptera coffeella (Guérin-Mèneville, 1842) (Lepidoptera: Lyonetiidae). 1 Adult females of this insect deposit their eggs on the adaxial leaf surface. After the embryonic stage (4-6 days), larvae hatch out and penetrate into the leaves to feed on their mesophyllic tissues.…”

Section: Introductionmentioning

confidence: 99%

URSOLIC ACID AND CIS-TILIROSIDE PRODUCED BY Merremia tomentosa AFFECT OVIPOSITION OF Leucoptera coffeella ON COFFEE PLANTS

Júnior¹,

Lopes²,

Alves³

et al. 2018

Quim. Nova

View full text Add to dashboard Cite

publicado na web em 18/01/2018To contribute to the development of new products to control the coffee leaf miner (Leucoptera coffeella), which is a major pest for coffee plants, this work aimed to select plant species able to produce substances active against this insect and to identify the active substances in the selected plant and their protein targets in the insect. Among the extracts of nineteen plant species, only that from leaves of Merremia tomentosa (Choisy) Hall. f. (Convolvulaceae) reduced the oviposition of L. coffeella on leaves of coffee plants. This extract was submitted to successive fractionation steps to achieve the isolation and identification of two active substances, ursolic acid (UA) and cis-tiliroside (CT). An in silico study showed that UA inhibits glycogen phosphorylases (GP) by binding to their allosteric site, while CT probably inhibits xanthine dehydrogenases (XT). As both GP and XT appear to be essential enzymes for insects, these results suggest that, during evolution, L. coffeella learned to identify plants producing inhibitors of these enzymes to avoid oviposition on such plants. Thus, both UA and CT have potential to be used as lead compounds in the development of new products for the control of the coffee leaf miner.

show abstract

“…Resistant coffee plants have been obtained through the transfer of resistance genes from C. racemosa to the susceptible C. arabica cultivars (Guerreiro-Filho 2006). However, homogeneous and stable populations, sexually propagated, have not been obtained yet, suggesting that resistance inheritance is more complex than the control by two dominant and complementary genes (Guerreiro-Filho et al 1999).…”

Section: Introductionmentioning

confidence: 99%