Abstract
This study investigates whether silicon nutrition, using potassium silicate (K2SiO3) and/or silicate-solubilizing bacteria (SSB), can affect the parasitic relationship between niger (Guizotia abyssinica (L.f.) Cass.) and dodder (Cuscuta campestris Yunck.). The experiment was arranged as a three-factor randomized complete block design that included parasitic infection (non-parasitized and dodder-parasitized niger), soil application of K2SiO3 (0 and 2 kg ha−1), and soil inoculation with a commercial SSB (0 and 600 ml ha−1). Without silicon nutrition, dodder caused a 45% reduction in niger biomass. The invasion of dodder, combined with silicon nutrition, synergistically increased the activity of the enzymes superoxide dismutase and catalase in niger. Without silicon nutrition and dodder, niger contained 235 mg silicon kg−1 dry weight. Dodder reduced it by 38.3%. In contrast, the optimal treatment—the combination of K2SiO3 and SSB—synergistically increased the silicon content by 195.7%. On average, dodder-parasitized niger grown in K2SiO3-treated, SSB-inoculated soil exhibited a threefold increase in lignin content. A similar result was observed for the enzyme phenylalanine ammonia-lyase, which is involved in lignin biosynthesis. The combination of K2SiO3 + SSB also improved the seed yield of dodder-parasitized niger by 126.1%, whereas these treatments were ineffective when applied individually. None of the treatments affected grain oil content, which remained between 36% and 38%. This study suggests that soil inoculated with SSB and treated with K2SiO3 can help mitigate damage caused by dodder in niger.
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Claims 11
Claim · model-written summary
Without silicon nutrition, dodder caused a 45% reduction in niger biomass compared with non-parasitized niger.
- Taxon
- niger
Guizotia abyssinicae0 - Treatment
- doddere0
- Interactor
- doddere0parasite
- Outcome
- niger biomasse0
- Direction
- reductione0
- Value
- 45%e0
- Qualifier
- Without silicon nutritione0
- Comparator
- non-parasitizede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Without silicon nutrition, dodder caused a 45% reduction in niger biomass”
e1“parasitic infection (non-parasitized and dodder-parasitized niger)”
Claim · model-written summary
Dodder invasion combined with silicon nutrition synergistically increased the activity of superoxide dismutase and catalase in niger.
- Taxon
- nigerGuizotia abyssinicae0
- Treatment
- silicon nutritione0
- Interactor
- doddere0parasite
- Outcome
- activity of the enzymes superoxide dismutase and catalasee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The invasion of dodder, combined with silicon nutrition, synergistically increased the activity of the enzymes superoxide dismutase and catalase in niger”
Claim · model-written summary
Niger without silicon nutrition and without dodder contained 235 mg silicon kg−1 dry weight.
- Taxon
- nigerGuizotia abyssinicae0
- Outcome
- silicone0
- Value
- 235 mg silicon kg−1 dry weighte0
- Qualifier
- Without silicon nutrition and doddere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Without silicon nutrition and dodder, niger contained 235 mg silicon kg−1 dry weight”
Claim · model-written summary
Dodder reduced the silicon content of niger by 38.3%.
- Taxon
- nigerGuizotia abyssinicae0
- Treatment
- Doddere1
- Interactor
- Doddere1parasite
- Outcome
- silicone0
- Direction
- reducede1
- Value
- 38.3%e1
- Comparator
- Without silicon nutrition and doddere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Without silicon nutrition and dodder, niger contained 235 mg silicon kg−1 dry weight”
e1“Dodder reduced it by 38.3%”
Claim · model-written summary
The combination of K2SiO3 and silicate-solubilizing bacteria synergistically increased niger silicon content by 195.7%.
- Taxon
- nigerGuizotia abyssinicae1
- Treatment
- combination of K2SiO3 and SSBe0
- Interactor
- SSBe0other
- Outcome
- silicon contente0
- Direction
- increasede0
- Value
- 195.7%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the combination of K2SiO3 and SSB—synergistically increased the silicon content by 195.7%”
e1“niger contained”
Claim · model-written summary
Dodder-parasitized niger grown in K2SiO3-treated, SSB-inoculated soil showed a threefold increase in lignin content.
- Taxon
- nigerGuizotia abyssinicae0
- Treatment
- K2SiO3-treated, SSB-inoculated soile0
- Interactor
- doddere0parasite
- Outcome
- lignin contente0
- Direction
- increasee0
- Value
- threefolde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“dodder-parasitized niger grown in K2SiO3-treated, SSB-inoculated soil exhibited a threefold increase in lignin content”
Claim · model-written summary
A similar increase was observed in the activity of phenylalanine ammonia-lyase, an enzyme of lignin biosynthesis, in dodder-parasitized niger in K2SiO3-treated, SSB-inoculated soil.
- Taxon
- nigerGuizotia abyssinicae0
- Treatment
- K2SiO3-treated, SSB-inoculated soile0
- Interactor
- doddere0parasite
- Outcome
- enzyme phenylalanine ammonia-lyasee1
- Direction
- increaseinferrede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“dodder-parasitized niger grown in K2SiO3-treated, SSB-inoculated soil exhibited a threefold increase in lignin content”
e1“A similar result was observed for the enzyme phenylalanine ammonia-lyase”
Claim · model-written summary
The combination of K2SiO3 and SSB improved the seed yield of dodder-parasitized niger by 126.1%.
- Taxon
- nigerGuizotia abyssinicae0
- Treatment
- combination of K2SiO3 + SSBe0
- Interactor
- doddere0parasite
- Outcome
- seed yielde0
- Direction
- improvede0
- Value
- 126.1%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The combination of K2SiO3 + SSB also improved the seed yield of dodder-parasitized niger by 126.1%”
Claim · model-written summary
K2SiO3 and SSB applied individually were ineffective in improving the seed yield of dodder-parasitized niger.
- Taxon
- nigerGuizotia abyssinicae0
- Treatment
- applied individuallye0
- Interactor
- doddere0parasite
- Outcome
- seed yielde0
- Direction
- ineffectivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“improved the seed yield of dodder-parasitized niger by 126.1%, whereas these treatments were ineffective when applied individually”
Claim · model-written summary
None of the treatments affected grain oil content, which stayed between 36% and 38%.
- Taxon
- nigerGuizotia abyssinicae1
- Treatment
- None of the treatmentse0
- Outcome
- grain oil contente0
- Direction
- remainede0
- Value
- between 36% and 38%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“None of the treatments affected grain oil content, which remained between 36% and 38%”
e1“niger contained”
Claim · model-written summary
The authors suggest that soil inoculated with SSB and treated with K2SiO3 can help mitigate dodder damage in niger.
- Taxon
- nigerGuizotia abyssinicae0
- Outcome
- mitigate damage caused by doddere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soil inoculated with SSB and treated with K2SiO3 can help mitigate damage caused by dodder in niger”
The same questions in other papers
inoculation · nutrient: content · Guizotia abyssinica (niger)Results agree
2 papers in the same direction as this paper
- positive
- positive
inoculation · yield · Guizotia abyssinica (niger)Results 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.