Abstract
Abstract The use of silicon (Si) in agriculture has attracted a great deal of interest from researchers because of the numerous benefits of this element to plants, especially when they are submitted to abiotic and/or biotic types of stress. The host's increased resistance to diseases, promoted by Si, is mainly associated with the deposition of this element in the tissues and the potentiation of defence mechanisms. However, the mechanisms involved in Si‐mediated host resistance need to be further investigated. Thus, this study aimed to microscopically and biochemically elucidate the resistance of sorghum to anthracnose. In the leaves of plants supplied with Si, in addition to a greater deposition of Si at the infection sites, the acervuli were smaller in number compared to the leaves of plants not supplied with Si. Additionally, the activities of the defence enzymes peroxidases and polyphenoloxidases and the concentration of anthocyanins were higher in the leaves of plants supplied with Si. It can be concluded that Si, in addition to participate in the physical barrier that slows or prevents Colletotrichum sublineolum penetration in sorghum leaves, also plays a role in the biochemical aspect of sorghum resistance to anthracnose.
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Claims 6
Claim · model-written summary
Silicon supplied leaves had greater silicon deposition at infection sites.
- Treatment
- supplied with Sie0
- Outcome
- deposition of Si at the infection sitese0
- Direction
- greatere0
- Comparator
- plants not supplied with Sie0
SorghumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the leaves of plants supplied with Si, in addition to a greater deposition of Si at the infection sites, the acervuli were smaller in number compared to the leaves of plants not supplied with Si.”
e1“sorghum to anthracnose”
Claim · model-written summary
Silicon supplied sorghum leaves had fewer acervuli.
- Treatment
- supplied with Sie1
- Interactor
- Colletotrichum sublineolume3pathogen
- Outcome
- acervulie0
- Direction
- smaller in numbere0
- Comparator
- plants not supplied with Sie0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the acervuli were smaller in number compared to the leaves of plants not supplied with Si”
e1“In the leaves of plants supplied with Si”
e2“sorghum to anthracnose”
e3“Colletotrichum sublineolum penetration”
Claim · model-written summary
Silicon supplied leaves had higher peroxidase and polyphenoloxidase activities.
- Treatment
- supplied with Sie0
- Outcome
- activities of the defence enzymes peroxidases and polyphenoloxidasese0
- Direction
- highere0
- Comparator
- plants not supplied with Sie2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the activities of the defence enzymes peroxidases and polyphenoloxidases and the concentration of anthocyanins were higher in the leaves of plants supplied with Si.”
e1“sorghum to anthracnose”
e2“plants not supplied with Si”
Claim · model-written summary
Silicon supplied leaves had higher anthocyanin concentration.
- Treatment
- supplied with Sie0
- Outcome
- concentration of anthocyaninse0
- Direction
- highere0
- Comparator
- plants not supplied with Sie2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the concentration of anthocyanins were higher in the leaves of plants supplied with Si.”
e1“sorghum to anthracnose”
e2“plants not supplied with Si”
Claim · model-written summary
Silicon was interpreted as providing a physical barrier to pathogen penetration.
- Treatment
- Sie0
- Interactor
- Colletotrichum sublineolume0pathogen
- Outcome
- Colletotrichum sublineolum penetratione0
- Qualifier
- physical barriere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Si, in addition to participate in the physical barrier that slows or prevents Colletotrichum sublineolum penetration in sorghum leaves”
Claim · model-written summary
Silicon was interpreted as contributing to biochemical resistance to anthracnose.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“also plays a role in the biochemical aspect of sorghum resistance to anthracnose.”
e1“Si, in addition to participate”
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- positive
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Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.