Abstract
In order to investigate the influence of phenolic allelochemicals on the growth and development of tobacco seedlings, effect of benzoic acid, p-hydroxy benzoic acid and salicylic acid on seedling root growth, characteristics of gas exchange, chlorophyll fluorescence parameters and chlorophyll content of tobacco were analyzed in this study. Result showed that chlorophyll content of seedling leaf(SPAD value) first increased and then decreased with the enhancement of the three phenolic acids; Three phenolic acids all significantly inhibited the growth of tobacco seedling root, such as tip number, total root length and total root surface area, which showed the trend of first increased and then decreased or decreased directly; three phenolic acids all decreased the net photosynthetic rate(Pn), there was no significant difference in the treatment of benzoic acid; three phenolic acids all had effect on chlorophyll fluorescence parameters, the Fv/Fm value decreased with the increasing of concentrations, while with no significant difference, qP and PSII values significantly decreased. Our study exhibited that all three phenolic acids inhibited the developing of tobacco seedlings and the photosynthesis activity of tobacco plant.
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Claims 6
Claim · model-written summary
Leaf chlorophyll content (SPAD) first rose and then fell as the three phenolic acids increased.
- Taxon
- tobacco
Nicotiana tabacumt0 - Treatment
- benzoic acid, p-hydroxy benzoic acid and salicylic acide0
- Outcome
- chlorophyll content of seedling leaf(SPAD value)e1
- Direction
- first increased and then decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of phenolic acid on the root growth and photosynthetic characteristics of tobacco seedling”
e0“effect of benzoic acid, p-hydroxy benzoic acid and salicylic acid on seedling root growth”
e1“chlorophyll content of seedling leaf(SPAD value) first increased and then decreased with the enhancement of the three phenolic acids”
Claim · model-written summary
All three phenolic acids significantly inhibited tobacco seedling root growth (tip number, total root length, total root surface area).
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- benzoic acid, p-hydroxy benzoic acid and salicylic acide0
- Outcome
- growth of tobacco seedling roote2
- Direction
- significantly inhibitede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of phenolic acid on the root growth and photosynthetic characteristics of tobacco seedling”
e0“effect of benzoic acid, p-hydroxy benzoic acid and salicylic acid on seedling root growth”
e2“Three phenolic acids all significantly inhibited the growth of tobacco seedling root, such as tip number, total root length and total root surface area”
Claim · model-written summary
All three phenolic acids decreased the net photosynthetic rate (Pn) of tobacco.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- three phenolic acidse3
- Outcome
- net photosynthetic rate(Pn)e3
- Direction
- decreasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of phenolic acid on the root growth and photosynthetic characteristics of tobacco seedling”
e3“three phenolic acids all decreased the net photosynthetic rate(Pn)”
Claim · model-written summary
Benzoic acid showed no significant difference in its effect on net photosynthetic rate.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- benzoic acide4
- Outcome
- net photosynthetic rate(Pn)e3
- Direction
- no significant differencee4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of phenolic acid on the root growth and photosynthetic characteristics of tobacco seedling”
e3“three phenolic acids all decreased the net photosynthetic rate(Pn)”
e4“there was no significant difference in the treatment of benzoic acid”
Claim · model-written summary
Fv/Fm decreased with increasing concentrations of the three phenolic acids, without significant difference.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- three phenolic acidse6
- Outcome
- Fv/Fm valuee5
- Direction
- decreasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of phenolic acid on the root growth and photosynthetic characteristics of tobacco seedling”
e5“the Fv/Fm value decreased with the increasing of concentrations, while with no significant difference”
e6“three phenolic acids all had effect on chlorophyll fluorescence parameters”
Claim · model-written summary
qP and PSII values significantly decreased under the three phenolic acids.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- three phenolic acidse6
- Outcome
- qP and PSII valuese7
- Direction
- significantly decreasede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of phenolic acid on the root growth and photosynthetic characteristics of tobacco seedling”
e6“three phenolic acids all had effect on chlorophyll fluorescence parameters”
e7“qP and PSII values significantly decreased”
The same questions in other papers
salicylic acid · growth · Nicotiana tabacum (tobacco)Results differ
5 papers in the same direction as this paper · 7 in the opposite direction
- positive
- positive
- positive
9 papers more in this group
See all 13 papers →benzoic acid · growth · Nicotiana tabacum (tobacco)Results agree
2 papers in the same direction as this paper
- negative
- negative
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.