Colletotrichum truncatum Pathosystem on Capsicum spp: infection, colonization and defence mechanisms

Genetic differentiation and recombination among geographic populations of the fungal pathogen Colletotrichum truncatum from chili peppers in China

“…Colletotrichum truncatum is generally seed‐borne but can also be dispersed by wind and rain (Ranathunge et al. ). Its dominant reservoirs are soil and infected host debris and can survive at least 48 months on infected debris in soil (Ishaque and Talukdar ; Vos and Frinking ; Cannon et al.…”

Histopatología del proceso de infección de Colletotrichum truncatum en hojas de papaya y chícharo

“…Colletotrichum truncatum was reported in 2008 as the cause of anthracnose in papaya (Carica papaya) in Mexico (Tapia-Tusell et al, 2008), with an incidence of up to 40 % (Torres-Calzada et al, 2012). This species uses different infection mechanisms, since it behaves like an intracellular hemibiotrophic pathogen in pea (Pisum sativum), broad bean (Vicia faba), and lentil plants (Lens culinaris) (O´Connell et al, 1993;Latunde-Dada and Lucas, 2007), and as a subcuticular intramural pathogen in chili pepper (Capsicum annuum), chickpea (Cicer arietinum), peanut (Arachis hypogaea), and bean plants (Phaseolus vulgaris) (Pring et al, 1995;Ranathunge et al, 2012). Although there are diverse studies related to this species, the process of pathogenesis is unknown for papaya leaves; also, there is scarce information describing the infection process of a same strain of the pathogen in different hosts.…”

“…We (Pring et al, 1995;Ranathunge et al, 2012). Aunque existen diversos estudios relacionados con esta especie, se desconoce el proceso de patogénesis en hojas de papaya; además, existe escasa información en donde se describa el proceso de infección de una misma cepa del patógeno en distintos hospedantes.…”

“…Los acérvulos (Figura 1E) se asociaron con la coloración oscura en la superficie del hospedante en contraste con la hoja testigo, la cual no presentó síntomas de enfermedad (Figura 1F). A las 96 hdi, el patógeno completó su ciclo de vida al producir acérvulos con conidios, los cuales son la fuente de inóculo para infecciones en nuevos tejidos (Ranathunge et al, 2012). El daño celular y la producción de acérvulos se asociaron con la aparición de lesiones oscuras semicirculares de coloración marrón a negro, al tercer día después de inoculación (Figura 2A), en contraste con la hoja testigo (Figura 2B).…”

Research Article Correlation study of resistance components in the selection of Capsicum genotypes resistant to the fungus Colletotrichum gloeosporioides.

“…Research has been developed with the purpose of launching materials resistant to various pathogens, including anthracnose, but the progress towards achieving a durable resistance has been limited by the lack of natural resistance in Germplasm banks of C. annuum (Ranathunge et al, 2012). Due to huge losses caused by anthracnose, it is essential that studies be conducted to increase the knowledge about its biology, genetics, and pathogenesis to reduce financial and agricultural losses caused by the fungus C. gloeosporioides.…”