Cacao (<i>Theobroma cacao </i>L.) is an ancestrally
cultivated crop that has been the source of one of the most beloved
commodities, chocolate. Its worldwide demand has shaped the history of its
cultivation. In Chapter 1, the center of origin of cacao, its center of
domestication, the most outstanding movements of germplasm from the
Pre-Columbian to the Republican era, the appearance and discovery of major
diseases, among other important economic, agricultural and social aspects
regarding cacao cultivation are reviewed. The following chapters focus on one
of the major pathogens of cacao in the Americas, <i>Moniliophthora roreri</i> causing frosty pod rot disease. Chapter 2
presents evidence that the center of origin of <i>M. roreri </i>is not limited to the Magdalena Valley in Colombia, as
other studies have suggested, but extends to Ecuador and the Peruvian Upper
Amazon. Chapter 3 focuses on the <i>A </i>and
<i>B </i>mating type loci diversity of <i>M. roreri </i>and reports a new <i>A </i>mating allele in Colombia and new
mating types in Colombia, Ecuador and infers the presence of even more mating
types in Ecuador and the Peruvian Upper Amazon. Additionally, Chapter 3 introduces
rapid approaches to collect <i>M. roreri </i> and to diagnose mating types. Finally, Chapter
4 touches the genomic aspect of <i>M. roreri
</i>and its close relatives within the Marasmiineae suborder. It presents the
most complete genome of a <i>Moniliophthora </i>species
generated so far and describes the evolution of predicted effectors and other
proteins that might be involved in pathogenicity in this suborder. It also
releases a custom program called SyLOCAL that evaluates synteny of a cluster of
genes between two genomes.
| Identifer | oai:union.ndltd.org:purdue.edu/oai:figshare.com:article/8047319 |
| Date | 10 June 2019 |
| Creators | Jorge Ronny Diaz Valderrama (5929643) |
| Source Sets | Purdue University |
| Detected Language | English |
| Type | Text, Thesis |
| Rights | CC BY 4.0 |
| Relation | https://figshare.com/articles/POPULATION_GENETICS_AND_GENOMICS_TO_UNDERSTAND_THE_INVASIVE_HISTORY_OF_THE_CACAO_PATHOGEN_i_MONILIOPHTHORA_RORERI_i_/8047319 |
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