Abstract
Fusarium verticillioides causes ear rot and grain mycotoxins in maize (Zea mays L.), which are harmful to human and animal health. Breeding and growing less susceptible plant genotypes is one alternative to reduce these detrimental effects. A better understanding of the resistance mechanisms would facilitate the implementation of strategic molecular agriculture to breeding of resistant germplasm. Our aim was to identify genes and metabolites that may be related to the Fusarium reaction in a resistant (L4637) and a susceptible (L4674) inbred. Gene expression data were obtained from microarray hybridizations in inoculated and non-inoculated kernels from both inbreds. Fungal inoculation did not produce considerable changes in gene expression and metabolites in L4637. Defense-related genes changed in L4674 kernels, responding specifically to the pathogen infection. These results indicate that L4637 resistance may be mainly due to constitutive defense mechanisms preventing fungal infection. These mechanisms seem to be poorly expressed in L4674; and despite the inoculation activate a defense response; this is not enough to prevent the disease progress in this susceptible line. Through this study, a global view of differential genes expressed and metabolites accumulated during resistance and susceptibility to F. verticillioides inoculation has been obtained, giving additional information about the mechanisms and pathways conferring resistance to this important disease in maize.
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Claims 6
Claim · model-written summary
Fungal inoculation caused little gene expression or metabolite change in resistant L4637.
- Material
- L4637e0
- Treatment
- Fungal inoculatione0
- Interactor
- Fusarium verticillioides
Fusarium verticillioidest0pathogen - Outcome
- gene expression and metabolitese0
- Direction
- did not produce considerable changese0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fungal inoculation did not produce considerable changes in gene expression and metabolites in L4637”
t0“Fusarium verticillioides in Maize”
Claim · model-written summary
Defense related genes changed in susceptible L4674 kernels following pathogen infection.
- Material
- L4674e0
- Organ / stage
- kernelse0
- Treatment
- pathogen infectione0
- Interactor
- Fusarium verticillioidesFusarium verticillioidest0pathogen
- Outcome
- Defense-related genese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Defense-related genes changed in L4674 kernels, responding specifically to the pathogen infection”
t0“Fusarium verticillioides in Maize”
Claim · model-written summary
L4637 resistance may largely rely on constitutive defenses that prevent fungal infection.
- Material
- L4637e0
- Interactor
- Fusarium verticillioidesFusarium verticillioidest0pathogen
- Outcome
- resistancee0
- Qualifier
- constitutive defense mechanisms preventing fungal infectione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“L4637 resistance may be mainly due to constitutive defense mechanisms preventing fungal infection”
t0“Fusarium verticillioides in Maize”
Claim · model-written summary
Those constitutive defenses seem poorly expressed in L4674.
- Material
- L4674e0
- Interactor
- Fusarium verticillioidesFusarium verticillioidest0pathogen
- Outcome
- These mechanismse0
- Direction
- poorly expressede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These mechanisms seem to be poorly expressed in L4674”
t0“Fusarium verticillioides in Maize”
Claim · model-written summary
Inoculation activated a defense response in L4674, but did not prevent disease progression.
- Material
- L4674e1
- Treatment
- inoculatione0
- Interactor
- Fusarium verticillioidesFusarium verticillioidest0pathogen
- Outcome
- defense responsee0
- Direction
- activatee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“despite the inoculation activate a defense response; this is not enough to prevent the disease progress in this susceptible line”
t0“Fusarium verticillioides in Maize”
e1“poorly expressed in L4674”
Claim · model-written summary
Disease progressed in susceptible L4674 despite an activated defense response.
- Material
- L4674e1
- Interactor
- Fusarium verticillioidesFusarium verticillioidest0pathogen
- Outcome
- disease progresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“this is not enough to prevent the disease progress in this susceptible line”
t0“Fusarium verticillioides in Maize”
e1“poorly expressed in L4674”
The same questions in other papers
inoculation · Fusarium verticillioides · Zea mays (maize)Positive and negative results
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- positive
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