Abstract
The effects of low temperature on amylose contents and activities of key enzymes related to starch biosynthesis in basmati rice (Oryza sativa L.) endosperm were investigated. Low temperature treatment prolonged the grain-filling period from 32 days to 53 days, but had no significant effect on the final grain weight. Results showed that low temperature during grain filling had no significant effect on total starch content but increased the amylose content in the mature endosperm of hulled rice by 21%. The measurable activities of sucrose synthase (SuSy), ADP-glucose pyrophosphorylase (AGPase), starch phosphorylase (SPase), starch branching enzyme (SBE), and soluble starch synthase (SS) in endosperms developed at 12°C were lower than those at 22°C when compared at a similar ripening stage on an endosperm basis, but the activity of granule-bound starch synthase (GBSS) was significantly higher than the corresponding activity in endosperms developing at 22°C. These findings suggest that GBSS might play a crucial role in increasing amylose during low-temperature growth conditions.
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Claims 8
Claim · model-written summary
Low temperature prolonged the grain-filling period of basmati rice from 32 to 53 days.
- Taxon
- basmati ricee0
- Treatment
- Low temperature treatmente1
- Outcome
- grain-filling periode1
- Direction
- prolongede1
- Value
- 32 days to 53 dayse1
Not reportedComparator
Verbatim
e0“The effects of low temperature on amylose contents and activities of key enzymes related to starch biosynthesis in basmati rice (Oryza sativa L.) endosperm were investigated”
e1“Low temperature treatment prolonged the grain-filling period from 32 days to 53 days, but had no significant effect on the final grain weight”
Claim · model-written summary
Low temperature had no significant effect on the final grain weight of basmati rice.
- Taxon
- basmati ricee0
- Treatment
- Low temperature treatmente1
- Outcome
- final grain weighte1
- Direction
- no_changeinferrede1
Not reportedComparator
Verbatim
e0“The effects of low temperature on amylose contents and activities of key enzymes related to starch biosynthesis in basmati rice (Oryza sativa L.) endosperm were investigated”
e1“Low temperature treatment prolonged the grain-filling period from 32 days to 53 days, but had no significant effect on the final grain weight”
Claim · model-written summary
Low temperature during grain filling had no significant effect on total starch content of basmati rice.
- Taxon
- basmati ricee0
- Treatment
- low temperature during grain fillinge2
- Outcome
- total starch contente2
- Direction
- no_changeinferrede2
Not reportedComparator
Verbatim
e0“The effects of low temperature on amylose contents and activities of key enzymes related to starch biosynthesis in basmati rice (Oryza sativa L.) endosperm were investigated”
e2“low temperature during grain filling had no significant effect on total starch content but increased the amylose content in the mature endosperm of hulled rice by 21%”
Claim · model-written summary
Low temperature during grain filling increased amylose content in the mature endosperm of basmati rice by 21%.
- Taxon
- basmati ricee0
- Organ / stage
- mature endosperme2
- Treatment
- low temperature during grain fillinge2
- Outcome
- amylose contente2
- Direction
- increasede2
- Value
- 21%e2
Not reportedComparator
Verbatim
e0“The effects of low temperature on amylose contents and activities of key enzymes related to starch biosynthesis in basmati rice (Oryza sativa L.) endosperm were investigated”
e2“low temperature during grain filling had no significant effect on total starch content but increased the amylose content in the mature endosperm of hulled rice by 21%”
Claim · model-written summary
At 12°C, the activities of SuSy, AGPase and SPase in basmati rice endosperm were lower than at 22°C.
Verbatim
e0“The effects of low temperature on amylose contents and activities of key enzymes related to starch biosynthesis in basmati rice (Oryza sativa L.) endosperm were investigated”
e3“The measurable activities of sucrose synthase (SuSy), ADP-glucose pyrophosphorylase (AGPase), starch phosphorylase (SPase), starch branching enzyme (SBE), and soluble starch synthase (SS) in endosperms developed at 12°C were lower than those at 22°C when compared at a similar ripening stage on an endosperm basis”
Claim · model-written summary
At 12°C, the activities of SBE and SS in basmati rice endosperm were lower than at 22°C.
Verbatim
e0“The effects of low temperature on amylose contents and activities of key enzymes related to starch biosynthesis in basmati rice (Oryza sativa L.) endosperm were investigated”
e3“The measurable activities of sucrose synthase (SuSy), ADP-glucose pyrophosphorylase (AGPase), starch phosphorylase (SPase), starch branching enzyme (SBE), and soluble starch synthase (SS) in endosperms developed at 12°C were lower than those at 22°C when compared at a similar ripening stage on an endosperm basis”
Claim · model-written summary
At 12°C, granule-bound starch synthase (GBSS) activity in basmati rice endosperm was significantly higher than at 22°C.
Verbatim
e0“The effects of low temperature on amylose contents and activities of key enzymes related to starch biosynthesis in basmati rice (Oryza sativa L.) endosperm were investigated”
e3“The measurable activities of sucrose synthase (SuSy), ADP-glucose pyrophosphorylase (AGPase), starch phosphorylase (SPase), starch branching enzyme (SBE), and soluble starch synthase (SS) in endosperms developed at 12°C were lower than those at 22°C when compared at a similar ripening stage on an endosperm basis”
e4“the activity of granule-bound starch synthase (GBSS) was significantly higher than the corresponding activity in endosperms developing at 22°C”
Claim · model-written summary
GBSS might play a crucial role in increasing amylose in basmati rice grown at low temperature.
Verbatim
e0“The effects of low temperature on amylose contents and activities of key enzymes related to starch biosynthesis in basmati rice (Oryza sativa L.) endosperm were investigated”
e5“These findings suggest that GBSS might play a crucial role in increasing amylose during low-temperature growth conditions”
The same questions in other papers
cold · quality: sugar starch · Oryza sativa (rice)Results differ
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- positive
- positive
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42 papers in the same direction as this paper · 20 in the opposite direction
- no effect
- positive
- positive
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See all 63 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.