Abstract
The association between hydrogen sulfide (H2S) and cell wall composition with regard to the mitigation of cadmium (Cd) toxicity in Brassica napus L. was investigated. Cd caused growth retardation, leaf chlorosis, and decreased endogenous H2S content in Brassica napus roots. Stimulating l-cysteine desulfhydrase (LCD)-mediated H2S production with H2S releaser (NaHS) markedly improved plant growth, reduced Cd content in stems and leaves, and rescued Cd-induced chlorosis. Furthermore, increased Cd retention was observed in root cell walls, indicating that NaHS reduced Cd movement from the roots to upper-plant parts. Exogenous NaHS also significantly increased the content of pectin and the activity of pectin methylesterase in cell walls of roots, thereby increasing Cd retention in pectin fractions. However, intensification of H2S barely affected hemicellulose content under Cd stress. Intensified H2S signal, therefore, alleviates Cd toxicity in Brassica napus by increasing pectin content and its demethylation, increasing Cd fixation in cell walls, and reducing root-to-shoot Cd translocation.
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Claims 11
Claim · model-written summary
Cd caused growth retardation and leaf chlorosis in Brassica napus.
- Taxon
- Brassica napus
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napust0 - Treatment
- Cde1
- Outcome
- growth retardation, leaf chlorosise1
- Direction
- causede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
t0“Brassica napus”
e1“Cd caused growth retardation, leaf chlorosis”
Claim · model-written summary
Cd decreased endogenous H2S content in Brassica napus roots.
- Taxon
- Brassica napusBrassica napust0
- Organ / stage
- rootse2
- Treatment
- Cde1
- Outcome
- endogenous H2S contente2
- Direction
- decreasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Brassica napus”
e1“Cd caused growth retardation, leaf chlorosis”
e2“decreased endogenous H2S content in Brassica napus roots”
Claim · model-written summary
NaHS (H2S releaser) markedly improved Brassica napus plant growth.
- Taxon
- Brassica napusBrassica napust0
- Treatment
- H2S releaser (NaHS)e3
- Outcome
- plant growthe3
- Direction
- improvede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Brassica napus”
e3“Stimulating l-cysteine desulfhydrase (LCD)-mediated H2S production with H2S releaser (NaHS) markedly improved plant growth”
Claim · model-written summary
NaHS reduced Cd content in stems and leaves of Brassica napus.
- Taxon
- Brassica napusBrassica napust0
- Organ / stage
- stems and leavese4
- Treatment
- NaHSe3
- Outcome
- Cd contente4
- Direction
- reducede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Brassica napus”
e3“Stimulating l-cysteine desulfhydrase (LCD)-mediated H2S production with H2S releaser (NaHS) markedly improved plant growth”
e4“reduced Cd content in stems and leaves”
Claim · model-written summary
NaHS rescued Cd-induced chlorosis in Brassica napus.
- Taxon
- Brassica napusBrassica napust0
- Treatment
- NaHSe3
- Outcome
- Cd-induced chlorosise5
- Direction
- rescuede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Brassica napus”
e3“Stimulating l-cysteine desulfhydrase (LCD)-mediated H2S production with H2S releaser (NaHS) markedly improved plant growth”
e5“rescued Cd-induced chlorosis”
Claim · model-written summary
Intensified H2S (NaHS) increased Cd retention in root cell walls of Brassica napus.
- Taxon
- Brassica napusBrassica napust0
- Organ / stage
- root cell wallse6
- Treatment
- NaHSe7
- Outcome
- Cd retentione6
- Direction
- increasede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Brassica napus”
e6“increased Cd retention was observed in root cell walls”
e7“NaHS reduced Cd movement from the roots to upper-plant parts”
Claim · model-written summary
NaHS reduced root-to-shoot Cd movement in Brassica napus.
- Taxon
- Brassica napusBrassica napust0
- Treatment
- NaHSe7
- Outcome
- Cd movement from the roots to upper-plant partse7
- Direction
- reducede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Brassica napus”
e7“NaHS reduced Cd movement from the roots to upper-plant parts”
Claim · model-written summary
NaHS significantly increased pectin content in root cell walls of Brassica napus.
- Taxon
- Brassica napusBrassica napust0
- Organ / stage
- cell walls of rootse1
- Treatment
- NaHSe1
- Outcome
- content of pectine1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Brassica napus”
e1“Exogenous NaHS also significantly increased the content of pectin and the activity of pectin methylesterase in cell walls of roots”
Claim · model-written summary
NaHS significantly increased pectin methylesterase activity in root cell walls of Brassica napus.
- Taxon
- Brassica napusBrassica napust0
- Organ / stage
- cell walls of rootse1
- Treatment
- NaHSe1
- Gene
- pectin methylesterasee1
- Outcome
- activity of pectin methylesterasee1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Brassica napus”
e1“Exogenous NaHS also significantly increased the content of pectin and the activity of pectin methylesterase in cell walls of roots”
Claim · model-written summary
NaHS increased Cd retention in pectin fractions of Brassica napus roots.
- Taxon
- Brassica napusBrassica napust0
- Treatment
- NaHSe1
- Compound
- pectine2
- Outcome
- Cd retention in pectin fractionse2
- Direction
- increasinge2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Brassica napus”
e1“Exogenous NaHS also significantly increased the content of pectin and the activity of pectin methylesterase in cell walls of roots”
e2“thereby increasing Cd retention in pectin fractions”
Claim · model-written summary
Intensified H2S barely affected hemicellulose content of Brassica napus under Cd stress.
- Taxon
- Brassica napusBrassica napust0
- Treatment
- intensification of H2Se1
- Outcome
- hemicellulose contente1
- Direction
- barely affectede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Brassica napus”
e1“intensification of H2S barely affected hemicellulose content under Cd stress”
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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.