New coffee (Coffea arabica) genotypes derived from Coffea canephora exhibiting high levels of resistance to leaf rust and Ceratocystis canker

Caicedo, Bertha Lucía Castro; Guerrero, Hernando Alfonso Cortina; Roux, Jolanda; Wingfield, Michael J.

doi:10.1590/s1982-56762013000600004

Cited by 14 publications

(7 citation statements)

References 20 publications

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“…C. canephora is considered as one of the parents of Coffea arabica (tetraploid), which provides about 70% of the coffee bean production in the world [46]. C. canephora can provide intense flavor and bitterness as well as greater abiotic and biotic resistance compared to C. arabica [47,48]. To produce a good quality beverage, coffee cultivation has spread towards the highlands in both Brazil and China, where the temperature occasionally reaches 0 • C [45,49].…”

Section: Introductionmentioning

confidence: 99%

Identification and Expression Analysis of the NAC Gene Family in Coffea canephora

et al. 2019

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The NAC gene family is one of the largest families of transcriptional regulators in plants, and it plays important roles in the regulation of growth and development as well as in stress responses. Genome-wide analyses have been performed in diverse plant species, but there is still no systematic analysis of the NAC genes of Coffea canephora Pierre ex A. Froehner. In this study, we identified 63 NAC genes from the genome of C. canephora. The basic features and comparison analysis indicated that the NAC gene members increased via duplication events during the evolution of the plant. Phylogenetic analysis divided the NAC proteins from C. canephora, Arabidopsis and rice into 16 subgroups. Analysis of the expression patterns of CocNACs under cold stress and coffee bean development indicated that 38 CocNACs were differentially expressed under cold stress; six genes may play important roles in the process of cold acclimation, and four genes among 54 CocNACs showing a variety of expression patterns during different developmental stages of coffee beans may be positively related to the bean development. This study can expand our understanding of the functions of the CocNAC gene family in cold responses and bean development, thereby potentially intensifying the molecular breeding programs of Coffea spp. plants.

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Section: Introductionmentioning

confidence: 99%

Identification and Expression Analysis of the NAC Gene Family in Coffea canephora

et al. 2019

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“…Commonly known as robusta coffee, C. canephora is a species that is considered as one of the parents of Coffea arabica, which represents 70% of the coffee bean production in the world [34,35]. For cup quality, C. canephora is famous for its dark color and intense flavor and bitterness when compared with C. arabica [36]. For agronomic traits, C. canephora can provide a higher high-temperature, drought, and coffee-rust tolerant plant as compared to C. arabica [33,36,37].…”

Section: Introductionmentioning

confidence: 99%

“…For cup quality, C. canephora is famous for its dark color and intense flavor and bitterness when compared with C. arabica [36]. For agronomic traits, C. canephora can provide a higher high-temperature, drought, and coffee-rust tolerant plant as compared to C. arabica [33,36,37]. However, like most subtropical and tropical plants, C. canephora is sensitive to low temperatures [33].…”

Section: Introductionmentioning

confidence: 99%

Genome-Wide Identification of WRKY Genes and Their Response to Cold Stress in Coffea canephora

Dong

Yang

Zhang

et al. 2019

Forests

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WRKY transcription factors are known to play roles in diverse stress responses in plants. Low temperatures limit the geographic distribution of Coffea canephora Pierre ex A.Froehner. The WRKYs of C. canephora are still not well characterized, and the response of C. canephora WRKYs (CcWRKYs) under cold stress is still largely unknown. We identified 49 CcWRKYs from the C. canephora genome to gain insight into these mechanisms. These CcWRKYs were divided into three groups that were based on the conserved WRKY domains and zinc-finger structure. Gene expression analysis demonstrated that 14 CcWRKYs were induced during the cold acclimation stage, 17 CcWRKYs were preferentially upregulated by 4 °C treatment, and 12 CcWRKYs were downregulated by cold stress. Subsequently, we carried out a genome-wide analysis to predict 14,513 potential CcWRKY target genes in C. canephora. These isolated genes were involved in multiple biological processes, and most of them could be grouped by the response to stimulus. Among the putative CcWRKY target genes, 235 genes were categorized into response to the cold process, including carbohydrate metabolic, lipid metabolic, and photosynthesis process-related genes. Furthermore, the qRT-PCR and correlation analysis indicated that CcWRKY might control their putative targets that respond to cold stress. These results provide a basis for understanding the molecular mechanism for CcWRKY-mediated cold responses.

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“…; Castro‐Caicedo et al. ). As a result, a vast area of coffee production in the world is planted with susceptible cultivars of the Arabica type ( Coffea arabica ) or the less susceptible Robusta type ( Coffea canephora ) (Zambolim ).…”

Section: Introductionmentioning

confidence: 98%

Variation in Aggressiveness Components in theHemileia vastatrixPopulation in Brazil

Maia

Badel

Fernandes

et al. 2017

Journal of Phytopathology

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The Pucciniomycete fungus Hemileia vastatrix causes leaf rust on coffee trees. The pathogen is responsible for considerable yield losses in susceptible coffee cultivars if appropriate management strategies are not implemented. Rapid spread and epidemics of rust fungi are usually associated with the emergence of new races of the pathogen that overcome resistance or with the emergence of more aggressive populations of the pathogen. In Brazil, coffee production is dominated by susceptible cultivars of Coffea arabica and Coffea canephora. We assessed aggressiveness in 46 populations of H. vastatrix from Minas Gerais and Esp ırito Santo, two of the most important coffee-producing states in Brazil. We observed a significant difference in the incubation period between the populations from Minas Gerais and Esp ırito Santo when 183 single-pustule isolates were inoculated onto Catua ı Vermelho IAC 44, a susceptible C. arabica cultivar. Variation in aggressiveness components was observed between and within localities. Isolates with longer incubation periods also tended to have longer latent periods, although there was only a low correlation between these two aggressiveness components (r 2 = 0.34, P = 2.2 9 10 À16 ). Lowsporulating isolates also had significantly longer incubation and latent periods. The H. vastatrix population from Minas Gerais and Esp ırito Santo is structured by the formation of groups of individuals with differential level of aggressiveness. Our results indicate that the variation in aggressiveness of the Brazilian H. vastatrix population may be associated with the geographic coffee-producing areas. Zambolim et al. 1999).Coffee leaf rust is a polycyclic disease, that is, successive rounds of urediniospores are produced and susceptible plant tissue is infected several times during

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New coffee (Coffea arabica) genotypes derived from Coffea canephora exhibiting high levels of resistance to leaf rust and Ceratocystis canker

Cited by 14 publications

References 20 publications

Identification and Expression Analysis of the NAC Gene Family in Coffea canephora

Identification and Expression Analysis of the NAC Gene Family in Coffea canephora

Genome-Wide Identification of WRKY Genes and Their Response to Cold Stress in Coffea canephora

Variation in Aggressiveness Components in theHemileia vastatrixPopulation in Brazil

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