| diversity of endophytic fungal community of cacao (theobroma cacao l.) and biological control of crinipellis perniciosa, causal agent of witches' broom disease. | the basidiomycete fungus crinipellis perniciosa (stahel) singer is the causal agent of witches' broom disease of cacao (theobromacacao l.) which is the main factor limiting cacao production in the americas. pod losses of up to 90% are experienced in affected areas as evidenced by the 50% drop in production in bahia province, brazil following the arrival of the c. perniciosa in the area in 1989. the disease has proven particularly difficult to control and many farmers in affected areas have given ... | 2005 | 15951847 |
| nuclear and mitochondrial rdna variability in crinipellis perniciosa from different geographic origins and hosts. | genetic variability in crinipellis perniciosa, the causal organism of witches' broom disease in theobroma cacao, was determined in strains originating from t. cacao and other susceptible host species heteropterys acutifolia and solanum lycocarpum in brazil, in order to clarify host specificity and geographical variability. rflp analysis of the ribosomal dna its regions (rdna its), and the mitochondrial dna small subunit ribosomal dna gene (mtdna ssu rdna) did not reveal any genetic variability i ... | 2003 | 12735241 |
| bacillus subtilis and enterobacter cloacae endophytes from healthy theobroma cacao l. trees can systemically colonize seedlings and promote growth. | clonal genotypes resistant to fungal diseases are an important component of the cocoa production system in southeastern bahia state (brazil), so that technologies for faster production of stronger and healthier plantlets are highly desirable. in this study, the effects of inoculated bacterial endophytes isolated from healthy adult cacao plants on seedlings, and aspects related to inoculation methods, colonization patterns, and photosynthesis were investigated. sequencing of 16s rrna, hsp-60, and ... | 2013 | 23212670 |
| carbon storage in soil size fractions under two cacao agroforestry systems in bahia, brazil. | shaded perennial agroforestry systems contain relatively high quantities of soil carbon (c) resulting from continuous deposition of plant residues; however, the extent to which the c is sequestered in soil will depend on the extent of physical protection of soil organic c (soc). the main objective of this study was to characterize soc storage in relation to soil fraction-size classes in cacao (theobroma cacao l.) agroforestry systems (afss). two shaded cacao systems and an adjacent natural fores ... | 2010 | 20069301 |
| aflatoxins and ochratoxin a in different cocoa clones (theobroma cacao l.) developed in the southern region of bahia, brazil. | brazil is the sixth largest producer of cocoa beans in the world, after côte d'ivoire, ghana, indonesia, nigeria and cameroon. the southern region of bahia stands out as the country's largest producer, accounting for approximately 60% of production. due to damage caused by infestation of the cocoa crop with the fungus moniliophthora perniciosa, which causes 'witch's broom disease', research in cocoa beans has led to the cloning of species that are resistant to the disease; however, there is litt ... | 2018 | 29090642 |