Abstract
Al is an essential element for the growth of tea plants roots, but excessive Al affects growth and development of Camellia sinensis. The underlying mechanism, particularly regulation of gas signaling molecule H2S, remains unclear. This study aims to uncover the function of H2S on C. sinensis under Al stress by treating hydroponic tea seedlings with different Al concentration, Na2S (H2S donor) and DL-propargylglycine (PAG, synthesis inhibitor). High concentration of Al inhibits growth of tea roots, while H2S significantly improves the effects caused by Al stress. Whether it is 2 mM Al3+ or 4 mM Al3+, H2S reduces content of Al in the entire plant and roots, increases root activity, further promotes root growth, increases fresh and dry weight, regulates ion homeostasis, improves cell structure, increases chlorophyll content, and thus reduces the damage of Al toxicity in C. sinensis. Moreover, in response to the stress of 2 mM Al3+, H2S simultaneously alleviates Al stress by regulating substances related to antioxidant pathways, increasing content of GSH and GSSG, enhancing activity of GST, GR, LCD, and key components of tea, in order to alleviate Al stress. These approaches have effectively improved Al tolerance of C. sinensis, providing a new perspective for the study of H2S enhancing Al tolerance.
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Claims 10
Claim · model-written summary
High aluminium concentration inhibited tea root growth.
Not reportedComparator
Verbatim
e0“High concentration of Al inhibits growth of tea roots”
Claim · model-written summary
Hydrogen sulfide reduced aluminium content in whole tea plants and roots under 2 or 4 mM aluminium.
- Taxon
- Camellia sinensis
Camellia sinensist0 - Treatment
- H2Se0
- Outcome
- content of Al in the entire plant and rootse0
- Direction
- reducese0
- Qualifier
- 2 mM Al3+ or 4 mM Al3+e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Whether it is 2 mM Al3+ or 4 mM Al3+, H2S reduces content of Al in the entire plant and roots”
t0“tea plant Camellia sinensis”
Claim · model-written summary
Hydrogen sulfide increased root activity and growth under aluminium stress.
- Taxon
- Camellia sinensisCamellia sinensist0
- Treatment
- H2Se1
- Outcome
- root activity, further promotes root growthe0
- Direction
- increasese0
- Qualifier
- 2 mM Al3+ or 4 mM Al3+e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increases root activity, further promotes root growth”
e1“Whether it is 2 mM Al3+ or 4 mM Al3+, H2S”
t0“tea plant Camellia sinensis”
Claim · model-written summary
Hydrogen sulfide increased fresh and dry weight under aluminium stress.
- Taxon
- Camellia sinensisCamellia sinensist0
- Treatment
- H2Se1
- Outcome
- fresh and dry weighte0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increases fresh and dry weight”
e1“Whether it is 2 mM Al3+ or 4 mM Al3+, H2S”
t0“tea plant Camellia sinensis”
Claim · model-written summary
Hydrogen sulfide regulated ion homeostasis and improved cell structure under aluminium stress.
- Taxon
- Camellia sinensisCamellia sinensist0
- Treatment
- H2Se1
- Outcome
- ion homeostasis, improves cell structuree0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“regulates ion homeostasis, improves cell structure”
e1“Whether it is 2 mM Al3+ or 4 mM Al3+, H2S”
t0“tea plant Camellia sinensis”
Claim · model-written summary
Hydrogen sulfide increased chlorophyll content under aluminium stress.
- Taxon
- Camellia sinensisCamellia sinensist0
- Treatment
- H2Se1
- Outcome
- chlorophyll contente0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increases chlorophyll content”
e1“Whether it is 2 mM Al3+ or 4 mM Al3+, H2S”
t0“tea plant Camellia sinensis”
Claim · model-written summary
Hydrogen sulfide increased GSH and GSSG content under 2 mM aluminium stress.
- Taxon
- Camellia sinensisCamellia sinensist0
- Treatment
- H2Se0
- Outcome
- content of GSH and GSSGe0
- Direction
- increasinge0
- Qualifier
- 2 mM Al3+e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in response to the stress of 2 mM Al3+, H2S simultaneously alleviates Al stress by regulating substances related to antioxidant pathways, increasing content of GSH and GSSG”
t0“tea plant Camellia sinensis”
Claim · model-written summary
Hydrogen sulfide enhanced GST, GR and LCD activity under 2 mM aluminium stress.
- Taxon
- Camellia sinensisCamellia sinensist0
- Treatment
- H2Se1
- Outcome
- activity of GST, GR, LCDe0
- Direction
- enhancinge0
- Qualifier
- 2 mM Al3+e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“enhancing activity of GST, GR, LCD”
e1“in response to the stress of 2 mM Al3+, H2S”
t0“tea plant Camellia sinensis”
Claim · model-written summary
Hydrogen sulfide enhanced key tea components under 2 mM aluminium stress.
- Taxon
- Camellia sinensisCamellia sinensist0
- Treatment
- H2Se1
- Outcome
- key components of teae0
- Direction
- enhancinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“enhancing activity of GST, GR, LCD, and key components of tea”
e1“in response to the stress of 2 mM Al3+, H2S”
t0“tea plant Camellia sinensis”
Claim · model-written summary
Hydrogen sulfide reduced aluminium toxicity damage in tea.
- Taxon
- C. sinensisCamellia sinensise0
- Treatment
- H2Se1
- Outcome
- damage of Al toxicitye0
- Direction
- reducese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“thus reduces the damage of Al toxicity in C. sinensis”
e1“Whether it is 2 mM Al3+ or 4 mM Al3+, H2S”
The same questions in other papers
aluminium atom · growth · Camellia sinensis (black tea)Results differ
1 paper in the same direction as this paper · 14 in the opposite direction
- negative
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1 paper in the same direction as this paper
- positive
hydrogen sulfide · pest · Camellia sinensis (black tea)Results agree
1 paper in the same direction as this paper
- 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.