Abstract
Spermine (SPM) was utilized to investigate its impact on the accumulation of sucrose synthase (SUS) and the role of SUS as a predictor of sink strength of rice under cyclic water stress. Treatments which consisted of control and SPM were arranged in a randomized complete block design. Biochemical analyses showed significantly higher contents of sucrose, starch and carbohydrate in SPM-treated panicles which pointed to increased loading of sucrose into the grains or conversion of sucrose into starch. Besides, the expression of SUS gene was up-regulated in both inferior and superior spikelets at twenty and three fold, respectively. Correspondingly, SUS enzyme showed an increase in its activity. The high expression of SUS3 during grain filling is linked to the increased capacity for starch synthesis. Grain weight and grain filling rate of SPM-treated spikelets improved due to their large sink capacity and increased number of spikelets per panicle.
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Claims 7
Claim · model-written summary
Spermine-treated panicles had significantly higher sucrose, starch and carbohydrate contents than controls.
- Taxon
- rice
Oryza sativat0 - Organ / stage
- paniclese0
- Treatment
- SPMe1
- Outcome
- contents of sucrose, starch and carbohydratee0
- Direction
- highere0
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significantly higher contents of sucrose, starch and carbohydrate in SPM-treated panicles”
e1“Treatments which consisted of control and SPM”
t0“rice plant”
Claim · model-written summary
SUS expression was up-regulated twenty fold in inferior spikelets.
- Taxon
- riceOryza sativat0
- Organ / stage
- inferiore0
- Treatment
- SPMe1
- Gene
- SUS genee0
- Outcome
- expression of SUS genee0
- Direction
- up-regulatede0
- Value
- twentye0
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“expression of SUS gene was up-regulated in both inferior and superior spikelets at twenty and three fold, respectively”
e1“Treatments which consisted of control and SPM”
t0“rice plant”
Claim · model-written summary
SUS expression was up-regulated three fold in superior spikelets.
- Taxon
- riceOryza sativat0
- Organ / stage
- superior spikeletse0
- Treatment
- SPMe1
- Gene
- SUS genee0
- Outcome
- expression of SUS genee0
- Direction
- up-regulatede0
- Value
- three folde0
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“expression of SUS gene was up-regulated in both inferior and superior spikelets at twenty and three fold, respectively”
e1“Treatments which consisted of control and SPM”
t0“rice plant”
Claim · model-written summary
SUS enzyme activity increased with spermine treatment.
- Taxon
- riceOryza sativat0
- Treatment
- SPMe1
- Gene
- SUS enzymee0
- Outcome
- activitye0
- Direction
- increasee0
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SUS enzyme showed an increase in its activity”
e1“Treatments which consisted of control and SPM”
t0“rice plant”
Claim · model-written summary
High SUS3 expression during grain filling was linked to increased starch synthesis capacity.
- Taxon
- riceOryza sativat0
- Organ / stage
- grain fillinge0
- Gene
- SUS3e0
- Outcome
- capacity for starch synthesise0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The high expression of SUS3 during grain filling is linked to the increased capacity for starch synthesis”
t0“rice plant”
Claim · model-written summary
Spermine-treated spikelets had improved grain weight and grain filling rate.
- Taxon
- riceOryza sativat0
- Organ / stage
- spikeletse0
- Outcome
- Grain weight and grain filling ratee0
- Direction
- improvede0
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain weight and grain filling rate of SPM-treated spikelets improved”
e1“Treatments which consisted of control and SPM”
t0“rice plant”
Claim · model-written summary
Spermine-treated panicles had an increased number of spikelets.
- Taxon
- riceOryza sativat0
- Treatment
- SPMe1
- Outcome
- number of spikelets per paniclee0
- Direction
- increasede0
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased number of spikelets per panicle”
e1“Treatments which consisted of control and SPM”
t0“rice plant”
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