Abstract
Silicon (Si) is an element frequently associated with remedial properties in plant defence against various biotic stressors. Application of Si in plant–fungus interactions offers an intriguing research subject for its potential to reduce fungal disease‐related losses in agriculture. However, Si‐mediated changes in the plant metabolism must be first elucidated. The present microscopic study explores the effect of Si amendment on ultrastructural, cytological and anatomical aspects of the interaction between Sorghum bicolor ‘Gadambalia’ primary roots and the necrotrophic fungus Alternaria alternata . Bright‐field microscopy observations revealed that Si supplementation helped sorghum seedlings to restrict the growth of A. alternata , possibly by cell wall modifications of the root exodermis, limiting further fungal invasion. Ultrastructural analyses by transmission electron microscopy showed intense vesiculation in exodermal cells of inoculated roots. Fluorescence microscopy with suberin‐ and phenolic‐specific staining indicated a significant enhancement in the deposition of these substances in exodermal cell walls upon Si supplementation. The increased accumulation of phenolics in Si‐supplied plants was also confirmed by Raman spectroscopy. In conclusion, Si amendment seemed to alleviate the negative effect of A. alternata infection in sorghum roots, which is shown by restricted distribution of fungal hyphae in root tissues probably due to Si‐mediated deposition of suberin and phenolics in the exodermis.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 6
Claim · model-written summary
Si supplementation helped sorghum seedlings to restrict the growth of Alternaria alternata.
- Treatment
- Si supplementatione1
- Interactor
- A. alternata
.jpg?width=60)
Alternaria alternatae1pathogen - Outcome
- growth of A. alternatae1
- Direction
- restricte1
SorghumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e1“Si supplementation helped sorghum seedlings to restrict the growth of A. alternata”
Claim · model-written summary
The restriction of fungal growth was possibly due to cell wall modifications of the root exodermis limiting further fungal invasion.
- Organ / stage
- root exodermise1
- Outcome
- limiting further fungal invasione1
- Qualifier
- cell wall modificationse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“possibly by cell wall modifications of the root exodermis, limiting further fungal invasion”
t0“sorghum”
Claim · model-written summary
Transmission electron microscopy showed intense vesiculation in exodermal cells of inoculated roots.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Ultrastructural analyses by transmission electron microscopy showed intense vesiculation in exodermal cells of inoculated roots”
t0“sorghum”
Claim · model-written summary
Si supplementation significantly enhanced the deposition of suberin and phenolics in exodermal cell walls.
- Organ / stage
- exodermal cell wallse1
- Treatment
- Si supplementatione1
- Outcome
- deposition of these substancese1
- Direction
- enhancemente1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“a significant enhancement in the deposition of these substances in exodermal cell walls upon Si supplementation”
t0“sorghum”
Claim · model-written summary
Raman spectroscopy confirmed an increased accumulation of phenolics in Si-supplied plants.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The increased accumulation of phenolics in Si‐supplied plants was also confirmed by Raman spectroscopy”
t0“sorghum”
Claim · model-written summary
Si amendment seemed to alleviate the negative effect of A. alternata infection in sorghum roots, shown by restricted fungal hyphae distribution probably due to Si-mediated deposition of suberin and phenolics in the exodermis.
- Organ / stage
- root tissuese1
- Outcome
- restricted distribution of fungal hyphae in root tissuese1
- Qualifier
- Si‐mediated deposition of suberin and phenolics in the exodermise1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“restricted distribution of fungal hyphae in root tissues probably due to Si‐mediated deposition of suberin and phenolics in the exodermis”
t0“sorghum”
The same questions in other papers
silicon atom · quality: phytochemicals · SorghumResults agree
3 papers in the same direction as this paper
- positive
- positive
- positive
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.