Effects of Hd2 in the presence of the photoperiod-insensitive functional allele of Hd1 in rice
The role of photoperiod sensitivity (PS) of flowering genes have become well recognized in rice, whereas little attention has been drawn to the non-PS component of these genes, especially to their influence on gene-by-gene interactions. Rice populations in which the photoperiod-sensitive allele at H...
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The Company of Biologists
2016-11-01
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| Series: | Biology Open |
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| Online Access: | http://bio.biologists.org/content/5/11/1719 |
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| author | Zhen-Hua Zhang Li-Yong Cao Jun-Yu Chen Ying-Xin Zhang Jie-Yun Zhuang Shi-Hua Cheng |
| author_facet | Zhen-Hua Zhang Li-Yong Cao Jun-Yu Chen Ying-Xin Zhang Jie-Yun Zhuang Shi-Hua Cheng |
| author_sort | Zhen-Hua Zhang |
| collection | DOAJ |
| description | The role of photoperiod sensitivity (PS) of flowering genes have become well recognized in rice, whereas little attention has been drawn to the non-PS component of these genes, especially to their influence on gene-by-gene interactions. Rice populations in which the photoperiod-sensitive allele at Hd1 has become insensitive to photoperiod but continued to affect heading date (HD) were used in this study to fine-map a quantitative trait locus (QTL) for HD and analyze its genetic relationship to Hd1. The QTL was delimitated to a 96.3-kb region on the distal end of the long arm of chromosome 7. Sequence comparison revealed that this QTL is identical to Hd2. In the near-isogenic line (NIL) populations analyzed, Hd1 and Hd2 were shown to be photoperiod insensitive and have pleiotropic effects for HD, plant height and yield traits. The two genes were found to largely act additively in regulating HD and yield traits. The results indicate that non-PS components of flowering genes involved in photoperiod response play an important role in controlling flowering time and grain yield in rice, which should allow breeders to better manipulate pleiotropic genes for balancing adaptability and high-yielding accumulation. |
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| id | doaj.art-03566d38095c4817883ea7b366c37c1a |
| institution | Directory Open Access Journal |
| issn | 2046-6390 |
| language | English |
| last_indexed | 2024-12-17T00:51:47Z |
| publishDate | 2016-11-01 |
| publisher | The Company of Biologists |
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| spelling | doaj.art-03566d38095c4817883ea7b366c37c1a2022-12-21T22:09:44ZengThe Company of BiologistsBiology Open2046-63902016-11-015111719172610.1242/bio.021071021071Effects of Hd2 in the presence of the photoperiod-insensitive functional allele of Hd1 in riceZhen-Hua Zhang0Li-Yong Cao1Jun-Yu Chen2Ying-Xin Zhang3Jie-Yun Zhuang4Shi-Hua Cheng5 State Key Laboratory of Rice Biology and Chinese National Center for Rice Improvement, China National Rice Research Institute, Hangzhou 310006, China State Key Laboratory of Rice Biology and Chinese National Center for Rice Improvement, China National Rice Research Institute, Hangzhou 310006, China State Key Laboratory of Rice Biology and Chinese National Center for Rice Improvement, China National Rice Research Institute, Hangzhou 310006, China State Key Laboratory of Rice Biology and Chinese National Center for Rice Improvement, China National Rice Research Institute, Hangzhou 310006, China State Key Laboratory of Rice Biology and Chinese National Center for Rice Improvement, China National Rice Research Institute, Hangzhou 310006, China State Key Laboratory of Rice Biology and Chinese National Center for Rice Improvement, China National Rice Research Institute, Hangzhou 310006, China The role of photoperiod sensitivity (PS) of flowering genes have become well recognized in rice, whereas little attention has been drawn to the non-PS component of these genes, especially to their influence on gene-by-gene interactions. Rice populations in which the photoperiod-sensitive allele at Hd1 has become insensitive to photoperiod but continued to affect heading date (HD) were used in this study to fine-map a quantitative trait locus (QTL) for HD and analyze its genetic relationship to Hd1. The QTL was delimitated to a 96.3-kb region on the distal end of the long arm of chromosome 7. Sequence comparison revealed that this QTL is identical to Hd2. In the near-isogenic line (NIL) populations analyzed, Hd1 and Hd2 were shown to be photoperiod insensitive and have pleiotropic effects for HD, plant height and yield traits. The two genes were found to largely act additively in regulating HD and yield traits. The results indicate that non-PS components of flowering genes involved in photoperiod response play an important role in controlling flowering time and grain yield in rice, which should allow breeders to better manipulate pleiotropic genes for balancing adaptability and high-yielding accumulation.http://bio.biologists.org/content/5/11/1719Hd1Hd2Heading datePhotoperiod-insensitivityRiceYield traits |
| spellingShingle | Zhen-Hua Zhang Li-Yong Cao Jun-Yu Chen Ying-Xin Zhang Jie-Yun Zhuang Shi-Hua Cheng Effects of Hd2 in the presence of the photoperiod-insensitive functional allele of Hd1 in rice Biology Open Hd1 Hd2 Heading date Photoperiod-insensitivity Rice Yield traits |
| title | Effects of Hd2 in the presence of the photoperiod-insensitive functional allele of Hd1 in rice |
| title_full | Effects of Hd2 in the presence of the photoperiod-insensitive functional allele of Hd1 in rice |
| title_fullStr | Effects of Hd2 in the presence of the photoperiod-insensitive functional allele of Hd1 in rice |
| title_full_unstemmed | Effects of Hd2 in the presence of the photoperiod-insensitive functional allele of Hd1 in rice |
| title_short | Effects of Hd2 in the presence of the photoperiod-insensitive functional allele of Hd1 in rice |
| title_sort | effects of hd2 in the presence of the photoperiod insensitive functional allele of hd1 in rice |
| topic | Hd1 Hd2 Heading date Photoperiod-insensitivity Rice Yield traits |
| url | http://bio.biologists.org/content/5/11/1719 |
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