Development and evaluation of rice giant embryo mutants for high oil content originated from a high-yielding cultivar 'Mizuhochikara'
| Autor: | Masao Sato, Mitsukazu Sakata, Mari Seno, Satoru Kuhara, Hikaru Satoh, Enrique R. Angeles, Yoshiyuki Yamagata, Yuki Nakamura, Atsushi Yoshimura, Kiyomi Takahashi, Akiko Enomoto, Kosuke Tashiro, Toshihiro Kumamaru, Toshihiro Mochizuki, Hiroaki Matsusaka |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
0106 biological sciences
0301 basic medicine Mutant Plant Science Biology 01 natural sciences Genetic analysis 03 medical and health sciences Botany Genetics Cultivar mutant triacylglycerol (TAG) Oryza sativa Bran N-methyl-N-nitrosourea (MNU) Wild type Rice bran oil rice bran oil food and beverages Embryo 030104 developmental biology Agronomy and Crop Science giant embryo 010606 plant biology & botany Research Paper |
| Zdroj: | Breeding Science |
| ISSN: | 1344-7610 |
| Popis: | Rice bran oil is a byproduct of the milling of rice (Oryza sativa L.). It offers various health benefits and has a beneficial fatty acid composition. To increase the amount of rice bran as a sink for triacylglycerol (TAG), we developed and characterized new breeding materials with giant embryos. To induce mutants, we treated fertilized egg cells of the high-yielding cultivar ‘Mizuhochikara’ with N-methyl-N-nitrosourea (MNU). By screening M2 seeds, we isolated four giant embryo mutant lines. Genetic analysis revealed that the causative loci in lines MGE12 and MGE13 were allelic to giant embryo (ge) on chromosome 7, and had base changes in the causal gene Os07g0603700. On the other hand, the causative loci in lines MGE8 and MGE14 were not allelic to ge, and both were newly mapped on chromosome 3. The TAG contents of all four mutant lines increased relative to their wild type, ‘Mizuhochikara’. MGE13 was agronomically similar to ‘Mizuhochikara’ and would be useful for breeding for improved oil content. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|