A hairy-leaf gene, BLANKET LEAF, of wild Oryza nivara increases photosynthetic water use efficiency in rice
Abstract Background High water use efficiency is essential to water-saving cropping. Morphological traits that affect photosynthetic water use efficiency are not well known. We examined whether leaf hairiness improves photosynthetic water use efficiency in rice. Results A chromosome segment introgre...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2017-05-01
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| Series: | Rice |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s12284-017-0158-1 |
| _version_ | 1818904247408787456 |
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| author | Norimitsu Hamaoka Hideshi Yasui Yoshiyuki Yamagata Yoko Inoue Naruto Furuya Takuya Araki Osamu Ueno Atsushi Yoshimura |
| author_facet | Norimitsu Hamaoka Hideshi Yasui Yoshiyuki Yamagata Yoko Inoue Naruto Furuya Takuya Araki Osamu Ueno Atsushi Yoshimura |
| author_sort | Norimitsu Hamaoka |
| collection | DOAJ |
| description | Abstract Background High water use efficiency is essential to water-saving cropping. Morphological traits that affect photosynthetic water use efficiency are not well known. We examined whether leaf hairiness improves photosynthetic water use efficiency in rice. Results A chromosome segment introgression line (IL-hairy) of wild Oryza nivara (Acc. IRGC105715) with the genetic background of Oryza sativa cultivar ‘IR24’ had high leaf pubescence (hair). The leaf hairs developed along small vascular bundles. Linkage analysis in BC5F2 and F3 populations showed that the trait was governed by a single gene, designated BLANKET LEAF (BKL), on chromosome 6. IL-hairy plants had a warmer leaf surface in sunlight, probably due to increased boundary layer resistance. They had a lower transpiration rate under moderate and high light intensities, resulting in higher photosynthetic water use efficiency. Conclusion Introgression of BKL on chromosome 6 from O. nivara improved photosynthetic water use efficiency in the genetic background of IR24. |
| first_indexed | 2024-12-19T21:04:24Z |
| format | Article |
| id | doaj.art-d4a64502df24489b84d404e035028ada |
| institution | Directory Open Access Journal |
| issn | 1939-8425 1939-8433 |
| language | English |
| last_indexed | 2024-12-19T21:04:24Z |
| publishDate | 2017-05-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Rice |
| spelling | doaj.art-d4a64502df24489b84d404e035028ada2022-12-21T20:05:43ZengSpringerOpenRice1939-84251939-84332017-05-0110111110.1186/s12284-017-0158-1A hairy-leaf gene, BLANKET LEAF, of wild Oryza nivara increases photosynthetic water use efficiency in riceNorimitsu Hamaoka0Hideshi Yasui1Yoshiyuki Yamagata2Yoko Inoue3Naruto Furuya4Takuya Araki5Osamu Ueno6Atsushi Yoshimura7Faculty of Agriculture, Kyushu UniversityFaculty of Agriculture, Kyushu UniversityFaculty of Agriculture, Kyushu UniversityFaculty of Agriculture, Kyushu UniversityFaculty of Agriculture, Kyushu UniversityFaculty of Agriculture, Ehime UniversityFaculty of Agriculture, Kyushu UniversityFaculty of Agriculture, Kyushu UniversityAbstract Background High water use efficiency is essential to water-saving cropping. Morphological traits that affect photosynthetic water use efficiency are not well known. We examined whether leaf hairiness improves photosynthetic water use efficiency in rice. Results A chromosome segment introgression line (IL-hairy) of wild Oryza nivara (Acc. IRGC105715) with the genetic background of Oryza sativa cultivar ‘IR24’ had high leaf pubescence (hair). The leaf hairs developed along small vascular bundles. Linkage analysis in BC5F2 and F3 populations showed that the trait was governed by a single gene, designated BLANKET LEAF (BKL), on chromosome 6. IL-hairy plants had a warmer leaf surface in sunlight, probably due to increased boundary layer resistance. They had a lower transpiration rate under moderate and high light intensities, resulting in higher photosynthetic water use efficiency. Conclusion Introgression of BKL on chromosome 6 from O. nivara improved photosynthetic water use efficiency in the genetic background of IR24.http://link.springer.com/article/10.1186/s12284-017-0158-1Leaf hairOryza nivaraPhotosynthetic traitWater use efficiencyWild rice |
| spellingShingle | Norimitsu Hamaoka Hideshi Yasui Yoshiyuki Yamagata Yoko Inoue Naruto Furuya Takuya Araki Osamu Ueno Atsushi Yoshimura A hairy-leaf gene, BLANKET LEAF, of wild Oryza nivara increases photosynthetic water use efficiency in rice Rice Leaf hair Oryza nivara Photosynthetic trait Water use efficiency Wild rice |
| title | A hairy-leaf gene, BLANKET LEAF, of wild Oryza nivara increases photosynthetic water use efficiency in rice |
| title_full | A hairy-leaf gene, BLANKET LEAF, of wild Oryza nivara increases photosynthetic water use efficiency in rice |
| title_fullStr | A hairy-leaf gene, BLANKET LEAF, of wild Oryza nivara increases photosynthetic water use efficiency in rice |
| title_full_unstemmed | A hairy-leaf gene, BLANKET LEAF, of wild Oryza nivara increases photosynthetic water use efficiency in rice |
| title_short | A hairy-leaf gene, BLANKET LEAF, of wild Oryza nivara increases photosynthetic water use efficiency in rice |
| title_sort | hairy leaf gene blanket leaf of wild oryza nivara increases photosynthetic water use efficiency in rice |
| topic | Leaf hair Oryza nivara Photosynthetic trait Water use efficiency Wild rice |
| url | http://link.springer.com/article/10.1186/s12284-017-0158-1 |
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