Abstract
SUMMARY It is generally accepted that sucrose phosphate synthase (SPS), sucrose synthase (SuSy), ADP-glucose pyrophosphorylase (AGPase), soluble starch synthase (SSS), granule-bound starch synthase (GBSS) and starch branching enzyme (SBE) play a key role in starch synthesis in wheat grains. Starch synthesis in wheat grains is influenced by genotype and environment. However, what is not known is the degree of variation in enzyme activities during starch accumulation of wheat cultivars field-grown in different water regimes. The present study was undertaken to determine whether irrigation patterns could cause differences in starch accumulation and activities of key enzymes involved in starch synthesis. Starch accumulation and related enzyme activities were investigated in two winter wheat varieties, JM20 and BY535, differing in grain starch content, under two irrigation patterns. Results showed that soil water deficit led to an increase at early grain filling and decrease during late grain filling in starch accumulation rate (SAR) and activities of key enzymes involved in starch synthesis, especially AGPase, SSS and SBE. Water deficit enhanced grain starch accumulation in two wheat cultivars, suggesting that rainfed treatments increase physiological activities during early grain filling and promote starch accumulation. Furthermore, the change of SAR is consistent with SuSy, AGPase, SSS and GBSS. The results suggest that these enzymes play a key role in starch synthesis, and the decrease of photosynthate produced in the source organ is not the factor inhibiting starch accumulation.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 7
Claim · model-written summary
Soil water deficit increased starch accumulation rate and key enzyme activities at early grain filling.
- Taxon
- winter wheat
Triticum aestivume1 - Material
- JM20 and BY535e1
- Organ / stage
- early grain fillinge3
- Treatment
- soil water deficite3
- Gene
- AGPase, SSS and SBEe3
- Outcome
- starch accumulation rate (SAR) and activities of key enzymes involved in starch synthesise3
- Direction
- increasee3
- Setting
- field-growne2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Starch accumulation and related enzyme activities were investigated in two winter wheat varieties, JM20 and BY535, differing in grain starch content, under two irrigation patterns”
e2“wheat cultivars field-grown in different water regimes”
e3“Results showed that soil water deficit led to an increase at early grain filling and decrease during late grain filling in starch accumulation rate (SAR) and activities of key enzymes involved in starch synthesis, especially AGPase, SSS and SBE”
Claim · model-written summary
Soil water deficit decreased starch accumulation rate and key enzyme activities during late grain filling.
- Taxon
- winter wheatTriticum aestivume1
- Organ / stage
- late grain fillinge3
- Treatment
- soil water deficite3
- Outcome
- starch accumulation rate (SAR) and activities of key enzymes involved in starch synthesise3
- Direction
- decreasee3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Starch accumulation and related enzyme activities were investigated in two winter wheat varieties, JM20 and BY535, differing in grain starch content, under two irrigation patterns”
e3“Results showed that soil water deficit led to an increase at early grain filling and decrease during late grain filling in starch accumulation rate (SAR) and activities of key enzymes involved in starch synthesis, especially AGPase, SSS and SBE”
Claim · model-written summary
Water deficit enhanced grain starch accumulation in two wheat cultivars.
- Taxon
- wheat cultivarsTriticum aestivume4
- Organ / stage
- graine4
- Treatment
- Water deficite4
- Outcome
- grain starch accumulatione4
- Direction
- enhancede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Water deficit enhanced grain starch accumulation in two wheat cultivars”
Claim · model-written summary
Rainfed treatments likely increase physiological activity during early grain filling and promote starch accumulation.
- Taxon
- winter wheatTriticum aestivume1
- Treatment
- rainfed treatmentse5
- Outcome
- starch accumulatione5
- Qualifier
- physiological activities during early grain fillinge5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Starch accumulation and related enzyme activities were investigated in two winter wheat varieties, JM20 and BY535, differing in grain starch content, under two irrigation patterns”
e5“suggesting that rainfed treatments increase physiological activities during early grain filling and promote starch accumulation”
Claim · model-written summary
The change in starch accumulation rate is consistent with SuSy, AGPase, SSS and GBSS activity.
- Taxon
- winter wheatTriticum aestivume1
- Gene
- SuSy, AGPase, SSS and GBSSe6
- Outcome
- change of SARe6
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Starch accumulation and related enzyme activities were investigated in two winter wheat varieties, JM20 and BY535, differing in grain starch content, under two irrigation patterns”
e6“the change of SAR is consistent with SuSy, AGPase, SSS and GBSS”
Claim · model-written summary
These starch-synthesis enzymes play a key role in starch synthesis in wheat grains.
- Taxon
- winter wheatTriticum aestivume1
- Outcome
- starch synthesise7
- Qualifier
- these enzymes play a key rolee7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Starch accumulation and related enzyme activities were investigated in two winter wheat varieties, JM20 and BY535, differing in grain starch content, under two irrigation patterns”
e7“The results suggest that these enzymes play a key role in starch synthesis”
Claim · model-written summary
A decrease of photosynthate produced in the source organ is not the factor inhibiting starch accumulation in wheat grains.
- Taxon
- winter wheatTriticum aestivume1
- Outcome
- starch accumulatione2
- Qualifier
- photosynthate produced in the source organe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Starch accumulation and related enzyme activities were investigated in two winter wheat varieties, JM20 and BY535, differing in grain starch content, under two irrigation patterns”
e2“the decrease of photosynthate produced in the source organ is not the factor inhibiting starch accumulation”
The same questions in other papers
drought · quality: sugar starch · Triticum aestivum (wheat)Results differ
10 papers in the same direction as this paper · 41 in the opposite direction
- negative
- negative
- negative
48 papers more in this group
See all 52 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.