Abstract
Much previous research has indicated most composts of pruning waste are characterized by potential phytotoxicity, it is highly correlated with the chemical compounds of raw materials. Cinnamomum camphora, a common kind of pruning waste in Southeast Asia and East Asia, is characterized by intense bioactivities due to complex chemical components. This study investigated the potential phytotoxicity of C. camphora pruning waste in light of germination and higher plant growth. C. camphora extracted from leaves completely inhibited seed germination and still showed suppression of root elongation at an extremely low dosage. C. camphora extract also displayed significant inhibition of nutrient absorption in tomato seedlings, including moisture, available nutrients (N, P and K) and key microelements (Fe, Mn, Zn and S). The gene expression of aquaporins and transporters of nitrate and phosphate was significantly up-regulated in roots. This could be regarded as a positive response to C. camphora extract for enhancing nutrient absorption. Moreover, the severe damage to the plasma membrane in roots caused by C. camphora extract might seriously affect nutrient absorption. Camphor is the main component of the C. camphora extract that may induce the phytotoxicity of plasma membrane damage, resulting in the inhibition of nutrient absorption and low biomass accumulation. This study provided a new understanding of the ecotoxicological effects of C. camphora pruning waste, indicating that the harmless disposal of pruning waste requires much attention and exploration in the future.
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Claims 8
Claim · model-written summary
C. camphora leaf extract completely inhibited seed germination.
- Taxon
- C. camphora
_(32109153283).jpg?width=60)
Cinnamomum camphorae0 - Treatment
- C. camphora extracted from leavese0
- Outcome
- seed germinatione0
- Direction
- completely inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_(32109153283).jpg?width=500)
Verbatim
e0“C. camphora extracted from leaves completely inhibited seed germination”
Claim · model-written summary
C. camphora leaf extract suppressed root elongation even at an extremely low dose.
- Taxon
- C. camphoraCinnamomum camphorae0
- Treatment
- C. camphora extracted from leavese0
- Outcome
- root elongatione0
- Direction
- suppressione0
- Qualifier
- at an extremely low dosagee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“C. camphora extracted from leaves completely inhibited seed germination and still showed suppression of root elongation at an extremely low dosage”
Claim · model-written summary
C. camphora extract significantly inhibited moisture, nutrient and microelement absorption in tomato seedlings.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- C. camphora extracte0
- Outcome
- nutrient absorptione0
- Direction
- inhibitione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“C. camphora extract also displayed significant inhibition of nutrient absorption in tomato seedlings, including moisture, available nutrients (N, P and K) and key microelements (Fe, Mn, Zn and S)”
Claim · model-written summary
Aquaporin expression was significantly up-regulated in roots.
- Taxon
- tomatoSolanum lycopersicume1
- Organ / stage
- rootse0
- Treatment
- C. camphora extracte1
- Gene
- aquaporinse0
- Outcome
- gene expression of aquaporinse0
- Direction
- up-regulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The gene expression of aquaporins and transporters of nitrate and phosphate was significantly up-regulated in roots”
e1“C. camphora extract also displayed significant inhibition of nutrient absorption in tomato seedlings”
Claim · model-written summary
Nitrate and phosphate transporter expression was significantly up-regulated in roots.
- Taxon
- tomatoSolanum lycopersicume1
- Organ / stage
- rootse0
- Treatment
- C. camphora extracte1
- Gene
- transporters of nitrate and phosphatee0
- Outcome
- gene expressione0
- Direction
- up-regulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The gene expression of aquaporins and transporters of nitrate and phosphate was significantly up-regulated in roots”
e1“C. camphora extract also displayed significant inhibition of nutrient absorption in tomato seedlings”
Claim · model-written summary
C. camphora extract caused severe plasma membrane damage in roots that might impair nutrient absorption.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- C. camphora extracte0
- Outcome
- nutrient absorptione0
- Qualifier
- severe damage to the plasma membrane in rootse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the severe damage to the plasma membrane in roots caused by C. camphora extract might seriously affect nutrient absorption”
e1“C. camphora extract also displayed significant inhibition of nutrient absorption in tomato seedlings”
Claim · model-written summary
Camphor may cause membrane damage, inhibited nutrient absorption and low biomass accumulation.
- Taxon
- C. camphoraCinnamomum camphorae0
- Compound
- Camphore0
- Outcome
- plasma membrane damagee0
- Qualifier
- may inducee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Camphor is the main component of the C. camphora extract that may induce the phytotoxicity of plasma membrane damage, resulting in the inhibition of nutrient absorption and low biomass accumulation”
Claim · model-written summary
The authors recommend further attention to harmless disposal of pruning waste.
- Taxon
- C. camphoraCinnamomum camphorae1
- Outcome
- harmless disposal of pruning wastee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the harmless disposal of pruning waste requires much attention and exploration in the future”
e1“C. camphora extract also displayed significant inhibition of nutrient absorption in tomato seedlings”
The same questions in other papers
botanical · nutrient: content · Solanum lycopersicum (tomato)Positive and negative results
2 papers in the same direction as this paper · 15 in the opposite direction
- positive
- positive
- positive
14 papers more in this group
See all 18 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.