Optimizing phosphorus management to increase grain yield and nutritional quality while reducing phytic acid concentration in black rice (Oryza sativa L.)
Rice with a black-colored pericarp (hereafter, black rice) has attracted considerable attention because of its high nutritional value. It is traditionally grown in infertile agroecosystems, where soil nutrient deficiency would affect grain yield and nutritional quality of the rice. This study examin...
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| Format: | Article |
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Frontiers Media S.A.
2023-08-01
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| Series: | Frontiers in Sustainable Food Systems |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fsufs.2023.1200453/full |
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| author | Aung Zaw Oo Hidetoshi Asai Kensuke Kawamura Junichiro Marui Kazuhiko Nakahara Toshiyuki Takai Hiroki Saito Khin Thuzar Win Juan Pariasca-Tanaka |
| author_facet | Aung Zaw Oo Hidetoshi Asai Kensuke Kawamura Junichiro Marui Kazuhiko Nakahara Toshiyuki Takai Hiroki Saito Khin Thuzar Win Juan Pariasca-Tanaka |
| author_sort | Aung Zaw Oo |
| collection | DOAJ |
| description | Rice with a black-colored pericarp (hereafter, black rice) has attracted considerable attention because of its high nutritional value. It is traditionally grown in infertile agroecosystems, where soil nutrient deficiency would affect grain yield and nutritional quality of the rice. This study examined the effects of phosphorus (P) application (0, 100, 250, 500, 1,000, and 1,300 mg P2O5 pot−1) on the growth, grain yield, and certain quality parameters of unpolished black (“Asamurasaki”) and white (“Takanari”) rice. The results showed that black rice grew poorly under P limitation, resulting in fewer tillers and a lower grain yield, while maintaining higher photosynthetic efficiency than white rice. However, black rice produced under P stress exhibited higher levels of Zn, Fe, and antioxidant (total phenolic and flavonoid content) than white rice, making it more nutritious. The optimal P application rates for black and white rice were 250 and 500 mg P2O5 pot−1, respectively, to achieve high yields. At the optimal rate, black rice exhibited high Fe, Zn and antioxidant levels compared to that at higher P application rates and had lower phytic acid levels, which could alleviate its inhibition of mineral absorption in the digestive tract. Moreover, low grain P due to P stress decreased the lightness L* value in the CIE-Lab system, improving the visual grain quality. Therefore, optimal P management is crucial for maintaining optimal grain yield with low phytic acid concentration and enhancing the nutritional quality of black rice for human consumption. |
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| language | English |
| last_indexed | 2024-03-12T17:59:22Z |
| publishDate | 2023-08-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Sustainable Food Systems |
| spelling | doaj.art-4c8bb51671c14aa085a6b9d11f9aed122023-08-02T13:00:47ZengFrontiers Media S.A.Frontiers in Sustainable Food Systems2571-581X2023-08-01710.3389/fsufs.2023.12004531200453Optimizing phosphorus management to increase grain yield and nutritional quality while reducing phytic acid concentration in black rice (Oryza sativa L.)Aung Zaw Oo0Hidetoshi Asai1Kensuke Kawamura2Junichiro Marui3Kazuhiko Nakahara4Toshiyuki Takai5Hiroki Saito6Khin Thuzar Win7Juan Pariasca-Tanaka8Japan International Research Center for Agricultural Sciences, Tsukuba, Ibaraki, JapanJapan International Research Center for Agricultural Sciences, Tsukuba, Ibaraki, JapanJapan International Research Center for Agricultural Sciences, Tsukuba, Ibaraki, JapanJapan International Research Center for Agricultural Sciences, Tsukuba, Ibaraki, JapanJapan International Research Center for Agricultural Sciences, Tsukuba, Ibaraki, JapanJapan International Research Center for Agricultural Sciences, Tsukuba, Ibaraki, JapanTropical Agricultural Research Fronts, Japan International Research Center for Agricultural Sciences, Ishigaki, Okinawa, JapanInstitute of Agrobiological Sciences, National Agriculture and Food Research Organization, Tsukuba, JapanJapan International Research Center for Agricultural Sciences, Tsukuba, Ibaraki, JapanRice with a black-colored pericarp (hereafter, black rice) has attracted considerable attention because of its high nutritional value. It is traditionally grown in infertile agroecosystems, where soil nutrient deficiency would affect grain yield and nutritional quality of the rice. This study examined the effects of phosphorus (P) application (0, 100, 250, 500, 1,000, and 1,300 mg P2O5 pot−1) on the growth, grain yield, and certain quality parameters of unpolished black (“Asamurasaki”) and white (“Takanari”) rice. The results showed that black rice grew poorly under P limitation, resulting in fewer tillers and a lower grain yield, while maintaining higher photosynthetic efficiency than white rice. However, black rice produced under P stress exhibited higher levels of Zn, Fe, and antioxidant (total phenolic and flavonoid content) than white rice, making it more nutritious. The optimal P application rates for black and white rice were 250 and 500 mg P2O5 pot−1, respectively, to achieve high yields. At the optimal rate, black rice exhibited high Fe, Zn and antioxidant levels compared to that at higher P application rates and had lower phytic acid levels, which could alleviate its inhibition of mineral absorption in the digestive tract. Moreover, low grain P due to P stress decreased the lightness L* value in the CIE-Lab system, improving the visual grain quality. Therefore, optimal P management is crucial for maintaining optimal grain yield with low phytic acid concentration and enhancing the nutritional quality of black rice for human consumption.https://www.frontiersin.org/articles/10.3389/fsufs.2023.1200453/fullantioxidantspigmented ricegrain colorion uptakephosphorus |
| spellingShingle | Aung Zaw Oo Hidetoshi Asai Kensuke Kawamura Junichiro Marui Kazuhiko Nakahara Toshiyuki Takai Hiroki Saito Khin Thuzar Win Juan Pariasca-Tanaka Optimizing phosphorus management to increase grain yield and nutritional quality while reducing phytic acid concentration in black rice (Oryza sativa L.) Frontiers in Sustainable Food Systems antioxidants pigmented rice grain color ion uptake phosphorus |
| title | Optimizing phosphorus management to increase grain yield and nutritional quality while reducing phytic acid concentration in black rice (Oryza sativa L.) |
| title_full | Optimizing phosphorus management to increase grain yield and nutritional quality while reducing phytic acid concentration in black rice (Oryza sativa L.) |
| title_fullStr | Optimizing phosphorus management to increase grain yield and nutritional quality while reducing phytic acid concentration in black rice (Oryza sativa L.) |
| title_full_unstemmed | Optimizing phosphorus management to increase grain yield and nutritional quality while reducing phytic acid concentration in black rice (Oryza sativa L.) |
| title_short | Optimizing phosphorus management to increase grain yield and nutritional quality while reducing phytic acid concentration in black rice (Oryza sativa L.) |
| title_sort | optimizing phosphorus management to increase grain yield and nutritional quality while reducing phytic acid concentration in black rice oryza sativa l |
| topic | antioxidants pigmented rice grain color ion uptake phosphorus |
| url | https://www.frontiersin.org/articles/10.3389/fsufs.2023.1200453/full |
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