Degree of domestication influences susceptibility of  Theobroma cacao  to frosty pod rot: a severe disease devastating Mexican cacao

Albores-Flores, Víctor; García‐Guzmán, Graciela; Espinosa‐García, Francisco J.; Salvador-Figueroa, Miguel

doi:10.17129/botsci.1793

Cited by 5 publications

(5 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…One of the consequences of domestication, as proposed by the genetic cost of domestication hypothesis (Gaillard et al, 2018), is increased susceptibility to disease. Consistent with this prediction, domesticated Criollo is one of the populations most susceptible to disease (Albores‐Flores et al, 2018), and here Criollo presents no diversity in the class of R‐genes under selection (Figure 2c).…”

Section: Discussionsupporting

confidence: 78%

Environment and pathogens shape local and regional adaptations to climate change in the chocolate tree, Theobroma cacao L.

2020

View full text Add to dashboard Cite

Predicting the potential fate of a species in the face of climate change requires knowing the distribution of molecular adaptations across the geographic range of the species. In this work, we analysed 79 genomes of Theobroma cacao, an Amazonian tree known for the fruit from which chocolate is produced, to evaluate how local and regional molecular signatures of adaptation are distributed across the natural range of the species. We implemented novel techniques that incorporate summary statistics from multiple selection scans to infer selective sweeps. The majority of the molecular adaptations in the genome are not shared among populations. We show that ~71.5% of genes under selection also show significant associations with changes in environmental variables. Our results support the interpretation that these genes contribute to local adaptation of the populations in response to abiotic factors. We also found strong patterns of molecular adaptation in a diverse array of disease resistance genes (6.5% of selective sweeps), suggesting that differential adaptation to pathogens also contributes significantly to local adaptations. Our results are consistent with the interpretation that local selective pressures are more important than regional selective pressures in explaining adaptation across the range of a species.

show abstract

Section: Discussionsupporting

confidence: 78%

Environment and pathogens shape local and regional adaptations to climate change in the chocolate tree, Theobroma cacao L.

2020

View full text Add to dashboard Cite

show abstract

“…Besides, the comparison of the admixture and the conglomerate analyses (Figure 3) allowed us to determine that the group I of the conglomerate analysis presented the highest percentage (31%) of Criollo ancestry, which has been reported as the group most susceptible to diseases (Albores-Flores et al 2018). In contrast, the group II presented the lowest ancestry of criollo (15%) with high percentage of Amelonado type (previously classified as the Forastero genetic group) which is known for high productivity (Wood and Lass 1985).…”

Section: Phenotypic Analysismentioning

confidence: 99%

Genome-Wide Association Study Reveals Novel Candidate Genes Associated with Productivity and Disease Resistance to Moniliophthora spp. in Cacao (Theobroma cacao L.)

Osorio-Guarín

Berdugo-Cely

Coronado-Silva

et al. 2020

G3 Genes|Genomes|Genetics

View full text Add to dashboard Cite

Cacao (Theobroma cacao L.), the source of chocolate, is one of the most important commodity products worldwide that helps improve the economic livelihood of farmers. Diseases like frosty pod rot caused by Moniliophthora roreri and witches’ broom caused by Moniliophthora perniciosa limit the cacao productivity, this can be solved by using resistant varieties. In the current study, we sequenced 229 cacao accessions using genotyping-by-sequencing to examine the genetic diversity and population structure employing 9,003 and 8,131 single nucleotide polymorphisms recovered by mapping against two cacao genomes (Criollo B97-61/B2 v2 and Matina 1-6 v1.1). In the phenotypic evaluation, three promising accessions for productivity and 10 with good tolerance to the frosty pod rot and witches’ broom diseases were found. A genome-wide association study was performed on 102 accessions, discovering two genes associated with productivity and seven to disease resistance. The results enriched the knowledge of the genetic regions associated with important cacao traits that can have significant implications for conservation and breeding strategies like marker-assisted selection.

show abstract

“…Based on the results obtained, fruit set, fruit growth and behavior of the pest, we propose that the production of phenolic compounds changes according to the physiological age or function that the organ is performing, which in this case are the panicles of both crops, according to what Albores-Flores [66] and Viveros-Legorreta [67] report, who agree that the concentration of phenols depends on the growth stage of the organ, varying in the types of compounds and their concentrations, depending on the function they perform, among these would be as a cell wall component, for biosynthesis of other molecules or as part of defense mechanisms, during cell division, cell elongation or cell differentiation. This result will vary according to the crop, because in mango the induction of phenolic compounds was after the second application, unlike the rambutan crop where the phenol induction response was rapid.…”

Section: Phenol Productionmentioning

confidence: 99%

Technological Development in the Use of <em>Allium sativum</em> Aqueous Extracts in the Agricultural Field

Flores¹,

Conesa²,

López³

et al. 2023

Organic Fertilizers - New Advances and Applications [Working Title]

View full text Add to dashboard Cite

The advance in agricultural technology could increase their commercialization, being the agronomic management for each crop an alternative. The management of natural products is a relevant and responsible need, in order to improve the quality and production of food, and to protect the agro-ecosystem biodiversity. Therefore, the aim of this chapter is to present our five-year study advances in mango and rambutan agronomic management with aqueous extract of Allium sativum and the use of natural adherent such as Melipona solani honey that improves the function of the components in the biological processes of the crop. Our results showed that this aqueous extract promotes the emission of vegetative and floral shoots, increases flower development, works as an attractant for pollinators, promotes fruit set, stimulates fruit growth, acts as an insecticide to control thrips and mealybugs and stimulates the production of defense metabolites, such as polyphenol compounds. The use of stingless bee honey as an adherent and the aqueous extract of A. sativum could be a key to potentiate the function of its components in leaves, panicles, flowers and fruits.

show abstract

Degree of domestication influences susceptibility of Theobroma cacao to frosty pod rot: a severe disease devastating Mexican cacao

Cited by 5 publications

References 36 publications

Environment and pathogens shape local and regional adaptations to climate change in the chocolate tree, Theobroma cacao L.

Environment and pathogens shape local and regional adaptations to climate change in the chocolate tree, Theobroma cacao L.

Genome-Wide Association Study Reveals Novel Candidate Genes Associated with Productivity and Disease Resistance to Moniliophthora spp. in Cacao (Theobroma cacao L.)

Technological Development in the Use of <em>Allium sativum</em> Aqueous Extracts in the Agricultural Field

Contact Info

Product

Resources

About