Differential responses to high temperature during maturation in heat-stress-tolerant cultivars of Japonica rice
High-temperature stress during the grain-filling stage reduces grain quality of rice, and this is a serious problem in Japan, especially in the Kyushu region. To solve this problem, various heat-tolerant cultivars have been bred, such as ‘Nikomaru’, ‘Kumasannochikara’, ‘Genkitsukushi’, ‘Sagabiyori’,...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2016-04-01
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| Series: | Plant Production Science |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/1343943X.2016.1140007 |
| _version_ | 1828482590453006336 |
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| author | Koichiro Tanamachi Masayuki Miyazaki Kazuhiro Matsuo Chetphilin Suriyasak Aina Tamada Kiyoshi Matsuyama Mari Iwaya-Inoue Yushi Ishibashi |
| author_facet | Koichiro Tanamachi Masayuki Miyazaki Kazuhiro Matsuo Chetphilin Suriyasak Aina Tamada Kiyoshi Matsuyama Mari Iwaya-Inoue Yushi Ishibashi |
| author_sort | Koichiro Tanamachi |
| collection | DOAJ |
| description | High-temperature stress during the grain-filling stage reduces grain quality of rice, and this is a serious problem in Japan, especially in the Kyushu region. To solve this problem, various heat-tolerant cultivars have been bred, such as ‘Nikomaru’, ‘Kumasannochikara’, ‘Genkitsukushi’, ‘Sagabiyori’, and ‘Otentosodachi’. When cultivated under high temperature after flowering, these heat-tolerant cultivars had lower percentages of chalky grains than in the heat-sensitive cultivar ‘Hinohikari’. All the heat-tolerant cultivars markedly decreased the nonstructural carbohydrate content in the stem under the high temperature compared to control condition during early grain-filling stage, which is considered to be a common trait of heat tolerance. Notably, ‘Sagabiyori’, ‘Genkitsukushi’, and ‘Nikomaru’ maintained a nucellar epidermis at 17 days after flowering (DAF) under high temperature, whereas the nucellar epidermis disappeared in ‘Hinohikari’. In addition, the expression of AGPS2b, thought to be a rate-limiting enzyme in starch synthesis, in ‘Kumasannochikara’, ‘Otentosodachi’, and ‘Nikomaru’ did not decrease under high temperature, whereas ‘Hinohikari’, ‘Sagabiyori’, and ‘Genkitsukushi’ could not maintain expression of the gene at 17 DAF. Moreover, the expression of Amy3E, a starch-degradation-related gene considered to induce grain chalkiness, in ‘Kumasannochikara’ at 17 DAF was not increased by high temperature. These results suggest that the heat-stress-tolerant cultivars have various mechanisms for dealing with high-temperature stress. |
| first_indexed | 2024-12-11T08:19:01Z |
| format | Article |
| id | doaj.art-a89db832df8444139598723d39171abf |
| institution | Directory Open Access Journal |
| issn | 1343-943X 1349-1008 |
| language | English |
| last_indexed | 2024-12-11T08:19:01Z |
| publishDate | 2016-04-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Plant Production Science |
| spelling | doaj.art-a89db832df8444139598723d39171abf2022-12-22T01:14:43ZengTaylor & Francis GroupPlant Production Science1343-943X1349-10082016-04-0119230030810.1080/1343943X.2016.11400071140007Differential responses to high temperature during maturation in heat-stress-tolerant cultivars of Japonica riceKoichiro Tanamachi0Masayuki Miyazaki1Kazuhiro Matsuo2Chetphilin Suriyasak3Aina Tamada4Kiyoshi Matsuyama5Mari Iwaya-Inoue6Yushi Ishibashi7Kyushu UniversityFukuoka Agriculture and Forestry Research CenterKyushu UniversityKyushu UniversityNational Institute of Technology, Kurume CollegeNational Institute of Technology, Kurume CollegeKyushu UniversityKyushu UniversityHigh-temperature stress during the grain-filling stage reduces grain quality of rice, and this is a serious problem in Japan, especially in the Kyushu region. To solve this problem, various heat-tolerant cultivars have been bred, such as ‘Nikomaru’, ‘Kumasannochikara’, ‘Genkitsukushi’, ‘Sagabiyori’, and ‘Otentosodachi’. When cultivated under high temperature after flowering, these heat-tolerant cultivars had lower percentages of chalky grains than in the heat-sensitive cultivar ‘Hinohikari’. All the heat-tolerant cultivars markedly decreased the nonstructural carbohydrate content in the stem under the high temperature compared to control condition during early grain-filling stage, which is considered to be a common trait of heat tolerance. Notably, ‘Sagabiyori’, ‘Genkitsukushi’, and ‘Nikomaru’ maintained a nucellar epidermis at 17 days after flowering (DAF) under high temperature, whereas the nucellar epidermis disappeared in ‘Hinohikari’. In addition, the expression of AGPS2b, thought to be a rate-limiting enzyme in starch synthesis, in ‘Kumasannochikara’, ‘Otentosodachi’, and ‘Nikomaru’ did not decrease under high temperature, whereas ‘Hinohikari’, ‘Sagabiyori’, and ‘Genkitsukushi’ could not maintain expression of the gene at 17 DAF. Moreover, the expression of Amy3E, a starch-degradation-related gene considered to induce grain chalkiness, in ‘Kumasannochikara’ at 17 DAF was not increased by high temperature. These results suggest that the heat-stress-tolerant cultivars have various mechanisms for dealing with high-temperature stress.http://dx.doi.org/10.1080/1343943X.2016.1140007Grain qualityhigh temperatureNSC contentnucellar epidermisstarch synthesis- and degradation-related genesrice |
| spellingShingle | Koichiro Tanamachi Masayuki Miyazaki Kazuhiro Matsuo Chetphilin Suriyasak Aina Tamada Kiyoshi Matsuyama Mari Iwaya-Inoue Yushi Ishibashi Differential responses to high temperature during maturation in heat-stress-tolerant cultivars of Japonica rice Plant Production Science Grain quality high temperature NSC content nucellar epidermis starch synthesis- and degradation-related genes rice |
| title | Differential responses to high temperature during maturation in heat-stress-tolerant cultivars of Japonica rice |
| title_full | Differential responses to high temperature during maturation in heat-stress-tolerant cultivars of Japonica rice |
| title_fullStr | Differential responses to high temperature during maturation in heat-stress-tolerant cultivars of Japonica rice |
| title_full_unstemmed | Differential responses to high temperature during maturation in heat-stress-tolerant cultivars of Japonica rice |
| title_short | Differential responses to high temperature during maturation in heat-stress-tolerant cultivars of Japonica rice |
| title_sort | differential responses to high temperature during maturation in heat stress tolerant cultivars of japonica rice |
| topic | Grain quality high temperature NSC content nucellar epidermis starch synthesis- and degradation-related genes rice |
| url | http://dx.doi.org/10.1080/1343943X.2016.1140007 |
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