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Expression profiling of Castanea genes during resistant and susceptible interactions with the Oomycete pathogen Phytophthora cinnamomi reveal possible mechanisms of immunity
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Orientador(es)
Resumo(s)
The most dangerous pathogen affecting the production of chestnuts is Phytophthora
cinnamomi a hemibiotrophic that causes root rot, also known as ink disease. Little
information has been acquired in chestnut on the molecular defense strategies against
this pathogen. The expression of eight candidate genes potentially involved in the
defense to P. cinnamomi was quantified by digital PCR in Castanea genotypes showing
different susceptibility to the pathogen. Seven of the eight candidate genes displayed
differentially expressed levels depending on genotype and time-point after inoculation.
Cast_Gnk2-like revealed to be the most expressed gene across all experiments and
the one that best discriminates between susceptible and resistant genotypes. Our data
suggest that the pre-formed defenses are crucial for the resistance of C. crenata to
P. cinnamomi. A lower and delayed expression of the eight studied genes was found
in the susceptible Castanea sativa, which may be related with the establishment and
spread of the disease in this species. A working model integrating the obtained results
is presented
Descrição
Palavras-chave
Castanea Phytophthora cinnamomi ink disease plant biotic interactions digital PCR
Contexto Educativo
Citação
Santos C, Duarte S, Tedesco S, Fevereiro P and Costa RL (2017) Expression Profiling of Castanea Genes during Resistant and Susceptible Interactions with the Oomycete Pathogen Phytophthora cinnamomi Reveal Possible Mechanisms of Immunity. Front. Plant Sci. 8:515.
Editora
FPLS