Abstract
The physiological role of a vacuolar ATPase subunit c1 (SaVHAc1) from a halophyte grass Spartina alterniflora was studied through its expression in rice. The SaVHAc1-expressing plants showed enhanced tolerance to salt stress than the wild-type plants, mainly through adjustments in early stage and preparatory physiological responses. In addition to the increased accumulation of its own transcript, SaVHAc1 expression led to increased accumulation of messages of other native genes in rice, especially those involved in cation transport and ABA signalling. The SaVHAc1-expressing plants maintained higher relative water content under salt stress through early stage closure of the leaf stoma and reduced stomata density. The increased K(+) /Na(+) ratio and other cations established an ion homoeostasis in SaVHAc1-expressing plants to protect the cytosol from toxic Na(+) and thereby maintained higher chlorophyll retention than the WT plants under salt stress. Besides, the role of SaVHAc1 in cell wall expansion and maintenance of net photosynthesis was implicated by comparatively higher root and leaf growth and yield of rice expressing SaVHAc1 over WT under salt stress. The study indicated that the genes contributing toward natural variation in grass halophytes could be effectively manipulated for improving salt tolerance of field crops within related taxa.
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Claims 10
Claim · model-written summary
SaVHAc1-expressing rice plants showed enhanced tolerance to salt stress compared with wild-type plants.
- Taxon
- rice
Oryza sativae0 - Material
- SaVHAc1-expressing plantse1
- Treatment
- salt stresse1
- Gene
- SaVHAc1e1
- Outcome
- tolerancee1
- Direction
- enhancede1
- Comparator
- wild-type plantse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“through its expression in rice”
e1“The SaVHAc1-expressing plants showed enhanced tolerance to salt stress than the wild-type plants”
Claim · model-written summary
SaVHAc1-expressing rice plants maintained higher relative water content under salt stress.
- Taxon
- riceOryza sativae0
- Material
- SaVHAc1-expressing plantse2
- Treatment
- salt stresse2
- Outcome
- relative water contente2
- Direction
- highere2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“through its expression in rice”
e2“The SaVHAc1-expressing plants maintained higher relative water content under salt stress”
Claim · model-written summary
SaVHAc1-expressing rice plants had reduced stomata density under salt stress.
- Taxon
- riceOryza sativae0
- Material
- SaVHAc1-expressing plantse3
- Treatment
- salt stresse3
- Outcome
- stomata densitye3
- Direction
- reducede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“through its expression in rice”
e3“The SaVHAc1-expressing plants maintained higher relative water content under salt stress through early stage closure of the leaf stoma and reduced stomata density”
Claim · model-written summary
SaVHAc1 expression increased the accumulation of messages of other native genes in rice, especially those for cation transport and ABA signalling.
- Taxon
- riceOryza sativae4
- Treatment
- SaVHAc1 expressione4
- Outcome
- accumulation of messages of other native genese4
- Direction
- increasede4
- Qualifier
- especially those involved in cation transport and ABA signallinge4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“In addition to the increased accumulation of its own transcript, SaVHAc1 expression led to increased accumulation of messages of other native genes in rice, especially those involved in cation transport and ABA signalling”
Claim · model-written summary
SaVHAc1 expression increased the accumulation of its own transcript in rice.
- Taxon
- riceOryza sativae4
- Treatment
- SaVHAc1 expressione4
- Gene
- SaVHAc1e4
- Outcome
- accumulation of its own transcripte4
- Direction
- increasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“In addition to the increased accumulation of its own transcript, SaVHAc1 expression led to increased accumulation of messages of other native genes in rice, especially those involved in cation transport and ABA signalling”
Claim · model-written summary
SaVHAc1-expressing rice plants showed an increased K+/Na+ ratio that established ion homoeostasis.
- Taxon
- riceOryza sativae0
- Treatment
- SaVHAc1-expressing plantse5
- Outcome
- K(+) /Na(+) ratioe5
- Direction
- increasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“through its expression in rice”
e5“The increased K(+) /Na(+) ratio and other cations established an ion homoeostasis in SaVHAc1-expressing plants”
Claim · model-written summary
SaVHAc1-expressing rice plants maintained higher chlorophyll retention than wild-type plants under salt stress.
- Taxon
- riceOryza sativae0
- Treatment
- salt stresse6
- Outcome
- chlorophyll retentione6
- Direction
- highere6
- Comparator
- WT plantse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“through its expression in rice”
e6“maintained higher chlorophyll retention than the WT plants under salt stress”
Claim · model-written summary
Rice expressing SaVHAc1 had higher root and leaf growth and yield than wild type under salt stress.
- Taxon
- riceOryza sativae7
- Material
- rice expressing SaVHAc1e7
- Treatment
- salt stresse7
- Gene
- SaVHAc1e7
- Outcome
- root and leaf growth and yielde7
- Direction
- highere7
- Comparator
- WTe7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“through its expression in rice”
e7“comparatively higher root and leaf growth and yield of rice expressing SaVHAc1 over WT under salt stress”
Claim · model-written summary
SaVHAc1 is implicated in cell wall expansion and in maintenance of net photosynthesis in rice.
- Taxon
- riceOryza sativae0
- Gene
- SaVHAc1e1
- Outcome
- cell wall expansion and maintenance of net photosynthesise1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“through its expression in rice”
e1“the role of SaVHAc1 in cell wall expansion and maintenance of net photosynthesis was implicated”
Claim · model-written summary
The authors recommend manipulating halophyte genes to improve salt tolerance of field crops.
Verbatim
e1“could be effectively manipulated for improving salt tolerance of field crops within related taxa”
The same questions in other papers
salinity · physiology: water · Oryza sativa (rice)Positive and negative results
5 papers in the same direction as this paper · 27 in the opposite direction
- negative
- negative
- negative
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See all 33 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.