Abstract
Potato black scurf caused by Rhizoctonia solani Kühn is widespread worldwide. The exploration and analysis of the infection mechanism of Rhizoctonia solani Kühn has important scientific significance to enhance the disease resistance of potato and other horticultural crops, and then break the restriction of fungal harm to agricultural production. The physiological and biochemical indexes and the expression levels of related genes were measured at 0, 1, 4, 8 and 16 days (T0, T1, T2, T3, T4) after inoculation with pathogenic bacteria. The results showed that the contents of L-phenylalanine ammonia-lyase (PAL), peroxidase (POD), lignin, total phenols (TP), and flavonoids increased significantly in potato after infection by Rhizoctonia solani Kühn, with the contents of PAL and POD reaching a peak at 8 d and then decreasing, and the contents of lignin and total phenols changing most significantly, reaching the highest levels at day 8 (T3) and day 16 (T4), respectively. During the infestation, the content of eight phenolic compounds increased, and the genes responsible for the lignin synthesis pathway were upregulated. However, in the later stage of infestation, the expression of two genes (PAL PG0031457 and PG2021549, HCT PG0014959, and COMT PG0011266) was down-regulated. In the correlation analysis, gene expression levels of all the genes, except POD (PG0005062), CCoAOMT (PG0018688), and COMT (PG0011266), were found to be positively correlated with the contents of lignin, total phenols, flavonoids, PAL, POD, and eight phenolic substances. Therefore, based on a sound understanding of the occurrence mechanism of Potato black scurf, this experiment analyzed the effect of Rhizoctonia solani Kühn infestation on the content of relevant metabolites in the lignin synthesis pathway as well as gene expression in potatoes, which provides a scientific basis for the prevention and control management of potato black scurf.
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Claims 13
Claim · model-written summary
L-phenylalanine ammonia-lyase (PAL) content increased significantly after infection.
- Taxon
- potato
Solanum tuberosume0 - Treatment
- infection by Rhizoctonia solani Kühne0
- Interactor
- Rhizoctonia solani Kühn
Rhizoctonia solanie0pathogen - Outcome
- contents of L-phenylalanine ammonia-lyase (PAL)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that the contents of L-phenylalanine ammonia-lyase (PAL), peroxidase (POD), lignin, total phenols (TP), and flavonoids increased significantly in potato after infection by Rhizoctonia solani Kühn”
Claim · model-written summary
peroxidase (POD) content increased significantly after infection.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- infection by Rhizoctonia solani Kühne0
- Interactor
- Rhizoctonia solani KühnRhizoctonia solanie0pathogen
- Outcome
- peroxidase (POD)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that the contents of L-phenylalanine ammonia-lyase (PAL), peroxidase (POD), lignin, total phenols (TP), and flavonoids increased significantly in potato after infection by Rhizoctonia solani Kühn”
Claim · model-written summary
lignin content increased significantly after infection.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- infection by Rhizoctonia solani Kühne0
- Interactor
- Rhizoctonia solani KühnRhizoctonia solanie0pathogen
- Outcome
- lignine0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that the contents of L-phenylalanine ammonia-lyase (PAL), peroxidase (POD), lignin, total phenols (TP), and flavonoids increased significantly in potato after infection by Rhizoctonia solani Kühn”
Claim · model-written summary
total phenols (TP) content increased significantly after infection.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- infection by Rhizoctonia solani Kühne0
- Interactor
- Rhizoctonia solani KühnRhizoctonia solanie0pathogen
- Outcome
- total phenols (TP)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that the contents of L-phenylalanine ammonia-lyase (PAL), peroxidase (POD), lignin, total phenols (TP), and flavonoids increased significantly in potato after infection by Rhizoctonia solani Kühn”
Claim · model-written summary
flavonoids content increased significantly after infection.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- infection by Rhizoctonia solani Kühne0
- Interactor
- Rhizoctonia solani KühnRhizoctonia solanie0pathogen
- Outcome
- flavonoidse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that the contents of L-phenylalanine ammonia-lyase (PAL), peroxidase (POD), lignin, total phenols (TP), and flavonoids increased significantly in potato after infection by Rhizoctonia solani Kühn”
Claim · model-written summary
PAL reached a peak or highest level at 8 d.
- Taxon
- potato (Solanum tuberosum L.)Solanum tuberosumt0
- Outcome
- contents of PALe0
- Direction
- peake0
- Qualifier
- 8 de0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with the contents of PAL and POD reaching a peak at 8 d and then decreasing, and the contents of lignin and total phenols changing most significantly, reaching the highest levels at day 8 (T3) and day 16 (T4), respectively.”
t0“potato (Solanum tuberosum L.)”
Claim · model-written summary
POD reached a peak or highest level at 8 d.
- Taxon
- potato (Solanum tuberosum L.)Solanum tuberosumt0
- Outcome
- PODe0
- Direction
- peake0
- Qualifier
- 8 de0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with the contents of PAL and POD reaching a peak at 8 d and then decreasing, and the contents of lignin and total phenols changing most significantly, reaching the highest levels at day 8 (T3) and day 16 (T4), respectively.”
t0“potato (Solanum tuberosum L.)”
Claim · model-written summary
lignin reached a peak or highest level at day 8 (T3).
- Taxon
- potato (Solanum tuberosum L.)Solanum tuberosumt0
- Outcome
- lignine0
- Direction
- highest levelse0
- Qualifier
- day 8 (T3)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with the contents of PAL and POD reaching a peak at 8 d and then decreasing, and the contents of lignin and total phenols changing most significantly, reaching the highest levels at day 8 (T3) and day 16 (T4), respectively.”
t0“potato (Solanum tuberosum L.)”
Claim · model-written summary
total phenols reached a peak or highest level at day 16 (T4).
- Taxon
- potato (Solanum tuberosum L.)Solanum tuberosumt0
- Outcome
- total phenolse0
- Direction
- highest levelse0
- Qualifier
- day 16 (T4)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with the contents of PAL and POD reaching a peak at 8 d and then decreasing, and the contents of lignin and total phenols changing most significantly, reaching the highest levels at day 8 (T3) and day 16 (T4), respectively.”
t0“potato (Solanum tuberosum L.)”
Claim · model-written summary
The content of eight phenolic compounds increased during infestation.
- Taxon
- potato (Solanum tuberosum L.)Solanum tuberosumt0
- Outcome
- content of eight phenolic compoundse0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“During the infestation, the content of eight phenolic compounds increased, and the genes responsible for the lignin synthesis pathway were upregulated.”
t0“potato (Solanum tuberosum L.)”
Claim · model-written summary
Genes responsible for the lignin synthesis pathway were upregulated during infestation.
- Taxon
- potato (Solanum tuberosum L.)Solanum tuberosumt0
- Outcome
- genes responsible for the lignin synthesis pathwaye0
- Direction
- upregulatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“During the infestation, the content of eight phenolic compounds increased, and the genes responsible for the lignin synthesis pathway were upregulated.”
t0“potato (Solanum tuberosum L.)”
Claim · model-written summary
The named lignin pathway genes were down-regulated later in infestation.
- Taxon
- potato (Solanum tuberosum L.)Solanum tuberosumt0
- Gene
- PAL PG0031457 and PG2021549, HCT PG0014959, and COMT PG0011266e0
- Outcome
- expression of two genese0
- Direction
- down-regulatede0
- Qualifier
- later stage of infestatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However, in the later stage of infestation, the expression of two genes (PAL PG0031457 and PG2021549, HCT PG0014959, and COMT PG0011266) was down-regulated.”
t0“potato (Solanum tuberosum L.)”
Claim · model-written summary
Expression of most measured genes was positively correlated with lignin, phenol, flavonoid, PAL, POD and phenolic substance contents.
- Taxon
- potato (Solanum tuberosum L.)Solanum tuberosumt0
- Gene
- all the genese0
- Outcome
- contents of lignin, total phenols, flavonoids, PAL, POD, and eight phenolic substancese0
- Direction
- positively correlatede0
- Qualifier
- except POD (PG0005062), CCoAOMT (PG0018688), and COMT (PG0011266)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the correlation analysis, gene expression levels of all the genes, except POD (PG0005062), CCoAOMT (PG0018688), and COMT (PG0011266), were found to be positively correlated with the contents of lignin, total phenols, flavonoids, PAL, POD, and eight phenolic substances.”
t0“potato (Solanum tuberosum L.)”
The same questions in other papers
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5 papers in the same direction as this paper · 5 in the opposite direction
- negative
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See all 11 papers →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.