Abstract
In order to evaluate the effects of changing in sucrose partitioning on salt tolerance of rice plants in the seedling stage, a pot experiment was conducted in a split plot based on a randomized complete block design with three replications in the fields of Shahid Chamran University of Ahvaz. The experiment consisted of six lines and cultivars including, wild type (Tai pai), three antisense lines for sucrose transporter SUT1 gene (37-184-8-1, 37-111-7-1 and 34-45-6-1), salinity tolerant (Pokali) and salinity sensitive (Nipponbare) which were exposed to three salinity levels (2, 5 and 16 ds/m sodium chloride). 21 days after salt commencement, shoot dry weight, leaf relative water content, SPAD score, stomatal conductance and total soluble sugars in leaves were evaluated. Increasing in salinity led to increase in levels of soluble sugars and SPAD score and decrease in shoot dry weight, stomatal conductance and leaf relative water content. The results of this study showed that 37-184-8-1 and 37-111-7-1 antisense lines behaved similarly to pokali under salinity stress treatments and were superior in compare to Tai pai as wild type. The expression profiling experiment of sucrose transporter gene family of rice in antisense lines showed relatively reduction in expression of these genes after exposing to salinity. However, this reduction in antisense lines was less than the wild type. According to the results of this study it seems that manipulating the sucrose partitioning in rice plants may improve the salinity tolerance of transgenic lines at seedling stage and this could be suggested as a strategy in breeding programs.
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Claims 10
Claim · model-written summary
Increasing salinity increased leaf soluble sugars.
- Taxon
- rice
Oryza sativat0 - Treatment
- salinitye0
- Outcome
- levels of soluble sugarse0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing in salinity led to increase in levels of soluble sugars and SPAD score”
t0“rice”
Claim · model-written summary
Increasing salinity increased SPAD score.
- Taxon
- riceOryza sativat0
- Treatment
- salinitye0
- Outcome
- SPAD scoree0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing in salinity led to increase in levels of soluble sugars and SPAD score”
t0“rice”
Claim · model-written summary
Increasing salinity reduced shoot dry weight.
- Taxon
- riceOryza sativat0
- Treatment
- salinitye0
- Outcome
- shoot dry weighte0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing in salinity led to increase in levels of soluble sugars and SPAD score and decrease in shoot dry weight, stomatal conductance and leaf relative water content”
t0“rice”
Claim · model-written summary
Increasing salinity reduced stomatal conductance.
- Taxon
- riceOryza sativat0
- Treatment
- salinitye0
- Outcome
- stomatal conductancee0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing in salinity led to increase in levels of soluble sugars and SPAD score and decrease in shoot dry weight, stomatal conductance and leaf relative water content”
t0“rice”
Claim · model-written summary
Increasing salinity reduced leaf relative water content.
- Taxon
- riceOryza sativat0
- Treatment
- salinitye0
- Outcome
- leaf relative water contente0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing in salinity led to increase in levels of soluble sugars and SPAD score and decrease in shoot dry weight, stomatal conductance and leaf relative water content”
t0“rice”
Claim · model-written summary
Antisense line 37-184-8-1 performed similarly to Pokali and better than wild-type Tai pai under salinity.
- Taxon
- riceOryza sativat0
- Material
- 37-184-8-1e0
- Outcome
- superiore0
- Direction
- superiore0
- Qualifier
- similarly to pokali under salinity stress treatmentse0
- Comparator
- Tai paie0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“37-184-8-1 and 37-111-7-1 antisense lines behaved similarly to pokali under salinity stress treatments and were superior in compare to Tai pai as wild type”
t0“rice”
Claim · model-written summary
Antisense line 37-111-7-1 performed similarly to Pokali and better than wild-type Tai pai under salinity.
- Taxon
- riceOryza sativat0
- Material
- 37-111-7-1e0
- Outcome
- superiore0
- Direction
- superiore0
- Qualifier
- similarly to pokali under salinity stress treatmentse0
- Comparator
- Tai paie0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“37-184-8-1 and 37-111-7-1 antisense lines behaved similarly to pokali under salinity stress treatments and were superior in compare to Tai pai as wild type”
t0“rice”
Claim · model-written summary
Salinity reduced expression of sucrose transporter family genes in antisense lines.
- Taxon
- riceOryza sativae0
- Material
- antisense linese0
- Treatment
- salinitye0
- Gene
- sucrose transporter gene familye0
- Outcome
- expression of these genese0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sucrose transporter gene family of rice in antisense lines showed relatively reduction in expression of these genes after exposing to salinity”
Claim · model-written summary
The expression reduction under salinity was smaller in antisense lines than in wild type.
- Taxon
- riceOryza sativae1
- Material
- antisense linese0
- Gene
- sucrose transporter gene familye1
- Outcome
- this reductione0
- Direction
- lesse0
- Comparator
- wild typee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“this reduction in antisense lines was less than the wild type”
e1“sucrose transporter gene family of rice in antisense lines”
Claim · model-written summary
The authors suggest manipulating sucrose partitioning as a breeding strategy for rice salinity tolerance.
- Taxon
- riceOryza sativae0
- Outcome
- strategy in breeding programse0
- Qualifier
- may improve the salinity tolerance of transgenic lines at seedling stagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“manipulating the sucrose partitioning in rice plants may improve the salinity tolerance of transgenic lines at seedling stage and this could be suggested as a strategy in breeding programs”
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