Abstract
Silicon (Si) is considered as one of the beneficial elements for plants that play important roles in plant resistance to stresses. In this experiment, the effects of three levels of silicon (0, 0.85 and 1.7 mM) on the growth and physiological processes of pumpkin were studied in plants inoculated with Sphaerotheca fuliginea (250000 conidia ml−1) and non-inoculated plants under hydroponic condition. Applying silicon increased the Si concentration in plant tissues. Application of Si in plants inoculated with S. fuliginea decreased significantly severity of disease symptom (30%) and also the shoot membrane permeability was decreased. Addition of Si significantly increased the reactive sulfhydryl group content whereas disease decreased sulfhydryl group which was significantly lower in Si-free medium. The infected plants that were treatedwith 1.7 mM Si levels grew and yielded similar to non -infected pumpkins. Using Si nutrition decreased Fe and Mn and increased Zn concentration in the roots and shoots of plants. Alleviation of disease severity in the silicon treatments may be due to enhancing of plant tolerance to disease by decreasing of shoot membrane permeability, increasing the reactive sulfhydryl group content, and also due to effect of silicon on the uptake and distribution of some ions. This study revealed that Silicon at 1.7 mM used in hydroponic system effectively reduced powdery mildew and improved pumpkin growth.
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Claims 12
Claim · model-written summary
Silicon application increased silicon concentration in pumpkin tissues.
Not reportedComparator
Verbatim
e0“Applying silicon increased the Si concentration in plant tissues.”
t0“pumpkin”
Claim · model-written summary
Silicon significantly decreased disease symptom severity by 30% in infected pumpkin.
- Taxon
- pumpkint0
- Treatment
- Sie0
- Interactor
- S. fuliginea
Podosphaera fuligineae0pathogen - Outcome
- severity of disease symptome0
- Direction
- decreasede0
- Value
- 30%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of Si in plants inoculated with S. fuliginea decreased significantly severity of disease symptom (30%)”
t0“pumpkin”
Claim · model-written summary
Silicon decreased shoot membrane permeability in infected pumpkin.
- Taxon
- pumpkint0
- Treatment
- Sie0
- Interactor
- S. fuligineaPodosphaera fuligineae0pathogen
- Outcome
- shoot membrane permeabilitye0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of Si in plants inoculated with S. fuliginea decreased significantly severity of disease symptom (30%) and also the shoot membrane permeability was decreased.”
t0“pumpkin”
Claim · model-written summary
Silicon significantly increased reactive sulfhydryl group content.
Not reportedComparator
Verbatim
e0“Addition of Si significantly increased the reactive sulfhydryl group content”
t0“pumpkin”
Claim · model-written summary
Disease decreased sulfhydryl group content, with significantly lower content in silicon-free medium.
Verbatim
e0“disease decreased sulfhydryl group which was significantly lower in Si-free medium.”
t0“pumpkin”
Claim · model-written summary
Infected pumpkin treated with 1.7 mM silicon grew similarly to noninfected pumpkin.
Verbatim
e0“The infected plants that were treatedwith 1.7 mM Si levels grew and yielded similar to non -infected pumpkins.”
Claim · model-written summary
Infected pumpkin treated with 1.7 mM silicon yielded similarly to noninfected pumpkin.
Verbatim
e0“The infected plants that were treatedwith 1.7 mM Si levels grew and yielded similar to non -infected pumpkins.”
Claim · model-written summary
Silicon nutrition decreased iron concentration in pumpkin roots and shoots.
Not reportedComparator
Verbatim
e0“Using Si nutrition decreased Fe and Mn and increased Zn concentration in the roots and shoots of plants.”
t0“pumpkin”
Claim · model-written summary
Silicon nutrition decreased manganese concentration in pumpkin roots and shoots.
Not reportedComparator
Verbatim
e0“Using Si nutrition decreased Fe and Mn and increased Zn concentration in the roots and shoots of plants.”
t0“pumpkin”
Claim · model-written summary
Silicon nutrition increased zinc concentration in pumpkin roots and shoots.
- Taxon
- pumpkint0
- Organ / stage
- roots and shootse0
- Treatment
- Si nutritione0
- Outcome
- Zn concentratione0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“Using Si nutrition decreased Fe and Mn and increased Zn concentration in the roots and shoots of plants.”
t0“pumpkin”
Claim · model-written summary
The authors conclude that 1.7 mM silicon in a hydroponic system reduced powdery mildew.
- Taxon
- pumpkine0
- Treatment
- Silicon at 1.7 mMe0
- Outcome
- powdery mildewe0
- Direction
- reducede0
- Setting
- hydroponic systeme0
Not reportedComparator
Verbatim
e0“Silicon at 1.7 mM used in hydroponic system effectively reduced powdery mildew and improved pumpkin growth.”
Claim · model-written summary
The authors conclude that 1.7 mM silicon in a hydroponic system improved pumpkin growth.
- Taxon
- pumpkine0
- Treatment
- Silicon at 1.7 mMe0
- Outcome
- pumpkin growthe0
- Direction
- improvede0
- Setting
- hydroponic systeme0
Not reportedComparator
Verbatim
e0“Silicon at 1.7 mM used in hydroponic system effectively reduced powdery mildew and improved pumpkin growth.”
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