Abstract
【Objective】The present study was carried out to characterize the changing activities of key enzymes during grain filling in two wheat cultivars differing in gluten under irrigated and rain-fed conditions. This information will help to elucidate the enzymatic mechanisms of starch synthesis in wheat cultivars with different gluten. 【Method】The starch accumulation, sucrose metabolism and related enzymes activities were investigated in strong gluten type cultivar, JM20, and weak gluten type cultivar, BY535, in Taian and Dezhou experimental locations. 【Result】The soil water deficit led to an increase of starch accumutation at early grain-filling period and decrease during late grain-filling, respectively, increase of starch accumulation rate and activities of key enzymes involved in starch synthesis, especially AGPase, SSS, and SBE. Water deficit enhanced grain starch accumulation in two wheat cultivars. It suggests that rain-fed treatment increased the physiological activities during early grain filling, and promoted starch accumulation. Furthermore, the change of starch accumulation rate was consistent with SS, AGPase, SSS and GBSS. The results suggested that these enzymes play a key role in starch synthesis and the decrease of photosynthate produced in source organ is not the factor inhibiting starch accumulation. 【Conclusion】The soil water deficit led to an increase of starch accumulation at early grain-filling period and decrease during late grain-filling, respectively, increase of starch accumulation rate and activities of keyenzymes involved in starch synthesis, especially AGPase, SSS, GBSS and SBE. It indicated that water deficit can increase the sink activities and promote starch synthesis and accumulation.
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Claims 10
Claim · model-written summary
Soil water deficit increased starch accumulation at the early grain-filling period compared with irrigated conditions.
- Taxon
- wheat
Triticum aestivume0 - Organ / stage
- early grain-filling periode1
- Treatment
- soil water deficite1
- Outcome
- starch accumutatione1
- Direction
- increasee1
- Comparator
- irrigatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The present study was carried out to characterize the changing activities of key enzymes during grain filling in two wheat cultivars differing in gluten under irrigated and rain-fed conditions”
e1“The soil water deficit led to an increase of starch accumutation at early grain-filling period and decrease during late grain-filling, respectively”
Claim · model-written summary
Soil water deficit decreased starch accumulation during the late grain-filling period compared with irrigated conditions.
- Taxon
- wheatTriticum aestivume0
- Organ / stage
- late grain-fillinge1
- Treatment
- soil water deficite1
- Outcome
- starch accumutatione1
- Direction
- decreasee1
- Comparator
- irrigatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The present study was carried out to characterize the changing activities of key enzymes during grain filling in two wheat cultivars differing in gluten under irrigated and rain-fed conditions”
e1“The soil water deficit led to an increase of starch accumutation at early grain-filling period and decrease during late grain-filling, respectively”
Claim · model-written summary
Water deficit enhanced grain starch accumulation in two wheat cultivars compared with irrigated conditions.
- Taxon
- wheatTriticum aestivume3
- Treatment
- Water deficite3
- Outcome
- grain starch accumulatione3
- Direction
- enhancede3
- Comparator
- irrigatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The present study was carried out to characterize the changing activities of key enzymes during grain filling in two wheat cultivars differing in gluten under irrigated and rain-fed conditions”
e3“Water deficit enhanced grain starch accumulation in two wheat cultivars”
Claim · model-written summary
Soil water deficit increased the starch accumulation rate in wheat grain compared with irrigated conditions.
- Taxon
- wheatTriticum aestivume0
- Treatment
- soil water deficite1
- Outcome
- starch accumulation ratee2
- Direction
- increasee2
- Comparator
- irrigatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The present study was carried out to characterize the changing activities of key enzymes during grain filling in two wheat cultivars differing in gluten under irrigated and rain-fed conditions”
e1“The soil water deficit led to an increase of starch accumutation at early grain-filling period and decrease during late grain-filling, respectively”
e2“increase of starch accumulation rate and activities of key enzymes involved in starch synthesis, especially AGPase, SSS, and SBE”
Claim · model-written summary
Soil water deficit increased the activities of key starch-synthesis enzymes AGPase, SSS and SBE compared with irrigated conditions.
- Taxon
- wheatTriticum aestivume0
- Treatment
- soil water deficite1
- Gene
- AGPase, SSS, and SBEe2
- Outcome
- activities of key enzymes involved in starch synthesise2
- Direction
- increasee2
- Comparator
- irrigatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The present study was carried out to characterize the changing activities of key enzymes during grain filling in two wheat cultivars differing in gluten under irrigated and rain-fed conditions”
e1“The soil water deficit led to an increase of starch accumutation at early grain-filling period and decrease during late grain-filling, respectively”
e2“increase of starch accumulation rate and activities of key enzymes involved in starch synthesis, especially AGPase, SSS, and SBE”
Claim · model-written summary
The change of starch accumulation rate was consistently associated with the enzymes SS, AGPase, SSS and GBSS.
- Taxon
- wheatTriticum aestivume0
- Gene
- SS, AGPase, SSS and GBSSe4
- Outcome
- starch accumulation ratee4
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The present study was carried out to characterize the changing activities of key enzymes during grain filling in two wheat cultivars differing in gluten under irrigated and rain-fed conditions”
e4“Furthermore, the change of starch accumulation rate was consistent with SS, AGPase, SSS and GBSS”
Claim · model-written summary
These starch-synthesis enzymes are presumed to play a key role in starch synthesis in wheat grain.
- Taxon
- wheatTriticum aestivume0
- Outcome
- starch synthesise5
- Qualifier
- these enzymes play a key rolee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The present study was carried out to characterize the changing activities of key enzymes during grain filling in two wheat cultivars differing in gluten under irrigated and rain-fed conditions”
e5“The results suggested that these enzymes play a key role in starch synthesis”
Claim · model-written summary
The decrease of photosynthate produced in the source organ is not the factor inhibiting starch accumulation in wheat grain.
- Taxon
- wheatTriticum aestivume0
- Outcome
- starch accumulatione6
- Qualifier
- the decrease of photosynthate produced in source organe6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The present study was carried out to characterize the changing activities of key enzymes during grain filling in two wheat cultivars differing in gluten under irrigated and rain-fed conditions”
e6“the decrease of photosynthate produced in source organ is not the factor inhibiting starch accumulation”
Claim · model-written summary
Water deficit can increase sink activities in wheat grain.
- Taxon
- wheatTriticum aestivume0
- Treatment
- water deficite7
- Outcome
- sink activitiese7
- Direction
- increasee7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The present study was carried out to characterize the changing activities of key enzymes during grain filling in two wheat cultivars differing in gluten under irrigated and rain-fed conditions”
e7“It indicated that water deficit can increase the sink activities and promote starch synthesis and accumulation”
Claim · model-written summary
Water deficit can promote starch synthesis and accumulation in wheat grain.
- Taxon
- wheatTriticum aestivume0
- Treatment
- water deficite7
- Outcome
- starch synthesis and accumulatione7
- Direction
- promotee7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The present study was carried out to characterize the changing activities of key enzymes during grain filling in two wheat cultivars differing in gluten under irrigated and rain-fed conditions”
e7“It indicated that water deficit can increase the sink activities and promote starch synthesis and accumulation”
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