Unraveling the genetic potential of native rice (Oryza sativa L.) landraces for tolerance to early-stage submergence
Direct-seeded rice (DSR) is a promising alternative to the traditional puddled rice system. It has become more popular among rice growers as a result of socioeconomic shifts and global climate change. Although DSR offers advantages, rice plants experience greater anaerobic stress at sowing from unpr...
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Frontiers Media S.A.
2023-05-01
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| Series: | Frontiers in Plant Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fpls.2023.1083177/full |
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| author | Aravindan Shanmugam Kalaiarasan Manivelan Konne Deepika Gopal Nithishkumar Viswanadhapalli Blessy Raju Baskaran Monihasri Dhanasekar Nivetha Arunkamaraj Roshini Palanivelu Sathya Raman Pushpa Rangarajan Manimaran Kasirajan Subrahmaniyan Datchinamoorthy Sassikumar Ramalingam Suresh |
| author_facet | Aravindan Shanmugam Kalaiarasan Manivelan Konne Deepika Gopal Nithishkumar Viswanadhapalli Blessy Raju Baskaran Monihasri Dhanasekar Nivetha Arunkamaraj Roshini Palanivelu Sathya Raman Pushpa Rangarajan Manimaran Kasirajan Subrahmaniyan Datchinamoorthy Sassikumar Ramalingam Suresh |
| author_sort | Aravindan Shanmugam |
| collection | DOAJ |
| description | Direct-seeded rice (DSR) is a promising alternative to the traditional puddled rice system. It has become more popular among rice growers as a result of socioeconomic shifts and global climate change. Although DSR offers advantages, rice plants experience greater anaerobic stress at sowing from unpredicted rainfall. Rice is unique among cereals in its ability to germinate under anaerobiosis. The coleoptile of rice rapidly elongates above the water surface to obtain more oxygen and enhance vigorous seedling growth. A panel of 115 landraces and four check varieties were subjected to anaerobic stress with a water level of 10 cm for up to 15 days. The present study observed significant variation in anaerobic germination percentage (AGP) (10%–100%) and anaerobic vigor index (AVI) (150–4,433). Landraces Karuthakar, Poovan samba, Mattaikar, Edakkal, Manvilayan, and Varappu kudainchan were identified as genotypes tolerant to early water submergence. The shoot and root length of susceptible landraces were significantly lower than the tolerant landraces under hypoxia condition, implying that landraces with longer shoots and roots had a higher survival rate. The response index substantiated this. The results clearly show that tolerant and moderately tolerant landraces possessed higher mean values for root and shoot lengths than susceptible landraces. The landraces grouped under the long–bold category had superior AGP and AVI scores to other grain type groups. This raises the possibility that differences in kernel breadth, which is linked to grain type, could affect anaerobic germination potential. Molecular confirmation using gene-specific markers, viz., DFR, TTP_G4, RM478, RM208, and RM24161, for which the polymorphic information content (PIC) value ranged from 0.36 (RM478) to 0.68 (RM206) suggests that this diverse panel of landraces must be assessed further using advanced molecular tools to precisely clarify the genetic mechanism behind this phenomenon. The tolerant landraces thus identified may become donors in breeding programs. The introduction of these traits would contribute to the development of rice varieties tolerant to anaerobic stress, resulting in sustainable yields. This solution could promote the DSR system across the world. |
| first_indexed | 2024-03-13T10:34:01Z |
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| last_indexed | 2024-03-13T10:34:01Z |
| publishDate | 2023-05-01 |
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| series | Frontiers in Plant Science |
| spelling | doaj.art-678a1c777b244a65b7af9373f34e1d272023-05-18T07:54:14ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2023-05-011410.3389/fpls.2023.10831771083177Unraveling the genetic potential of native rice (Oryza sativa L.) landraces for tolerance to early-stage submergenceAravindan Shanmugam0Kalaiarasan Manivelan1Konne Deepika2Gopal Nithishkumar3Viswanadhapalli Blessy4Raju Baskaran Monihasri5Dhanasekar Nivetha6Arunkamaraj Roshini7Palanivelu Sathya8Raman Pushpa9Rangarajan Manimaran10Kasirajan Subrahmaniyan11Datchinamoorthy Sassikumar12Ramalingam Suresh13Centre for Plant Breeding and Genetics, Tamil Nadu Agricultural University (TNAU), Coimbatore, Tamil Nadu, IndiaDepartment of Genetics and Plant Breeding, Agricultural College and Research Institute, Tamil Nadu Agricultural University (TNAU), Madurai, Tamil Nadu, IndiaCentre for Plant Breeding and Genetics, Tamil Nadu Agricultural University (TNAU), Coimbatore, Tamil Nadu, IndiaDepartment of Genetics and Plant Breeding, Anbil Dharmalingam Agricultural College and Research Institute, Tamil Nadu Agricultural University (TNAU), Trichy, Tamil Nadu, IndiaDepartment of Genetics and Plant Breeding, Agricultural College and Research Institute, Tamil Nadu Agricultural University (TNAU), Madurai, Tamil Nadu, IndiaCentre for Plant Molecular Biology and Biotechnology, Tamil Nadu Agricultural University (TNAU), Coimbatore, Tamil Nadu, IndiaCentre for Plant Molecular Biology and Biotechnology, Tamil Nadu Agricultural University (TNAU), Coimbatore, Tamil Nadu, IndiaCentre for Plant Molecular Biology and Biotechnology, Tamil Nadu Agricultural University (TNAU), Coimbatore, Tamil Nadu, IndiaCentre for Plant Breeding and Genetics, Tamil Nadu Agricultural University (TNAU), Coimbatore, Tamil Nadu, IndiaTamil Nadu Rice Research Institute, Tamil Nadu Agricultural University (TNAU), Aduthurai, Tamil Nadu, IndiaTamil Nadu Rice Research Institute, Tamil Nadu Agricultural University (TNAU), Aduthurai, Tamil Nadu, IndiaTamil Nadu Rice Research Institute, Tamil Nadu Agricultural University (TNAU), Aduthurai, Tamil Nadu, IndiaSugarcane Research Station, Tamil Nadu Agricultural University (TNAU), Cuddalore, Tamil Nadu, IndiaCentre for Plant Breeding and Genetics, Tamil Nadu Agricultural University (TNAU), Coimbatore, Tamil Nadu, IndiaDirect-seeded rice (DSR) is a promising alternative to the traditional puddled rice system. It has become more popular among rice growers as a result of socioeconomic shifts and global climate change. Although DSR offers advantages, rice plants experience greater anaerobic stress at sowing from unpredicted rainfall. Rice is unique among cereals in its ability to germinate under anaerobiosis. The coleoptile of rice rapidly elongates above the water surface to obtain more oxygen and enhance vigorous seedling growth. A panel of 115 landraces and four check varieties were subjected to anaerobic stress with a water level of 10 cm for up to 15 days. The present study observed significant variation in anaerobic germination percentage (AGP) (10%–100%) and anaerobic vigor index (AVI) (150–4,433). Landraces Karuthakar, Poovan samba, Mattaikar, Edakkal, Manvilayan, and Varappu kudainchan were identified as genotypes tolerant to early water submergence. The shoot and root length of susceptible landraces were significantly lower than the tolerant landraces under hypoxia condition, implying that landraces with longer shoots and roots had a higher survival rate. The response index substantiated this. The results clearly show that tolerant and moderately tolerant landraces possessed higher mean values for root and shoot lengths than susceptible landraces. The landraces grouped under the long–bold category had superior AGP and AVI scores to other grain type groups. This raises the possibility that differences in kernel breadth, which is linked to grain type, could affect anaerobic germination potential. Molecular confirmation using gene-specific markers, viz., DFR, TTP_G4, RM478, RM208, and RM24161, for which the polymorphic information content (PIC) value ranged from 0.36 (RM478) to 0.68 (RM206) suggests that this diverse panel of landraces must be assessed further using advanced molecular tools to precisely clarify the genetic mechanism behind this phenomenon. The tolerant landraces thus identified may become donors in breeding programs. The introduction of these traits would contribute to the development of rice varieties tolerant to anaerobic stress, resulting in sustainable yields. This solution could promote the DSR system across the world.https://www.frontiersin.org/articles/10.3389/fpls.2023.1083177/fullanaerobic germination tolerancegenetic diversitygrain typerapid shoot elongationresponse index |
| spellingShingle | Aravindan Shanmugam Kalaiarasan Manivelan Konne Deepika Gopal Nithishkumar Viswanadhapalli Blessy Raju Baskaran Monihasri Dhanasekar Nivetha Arunkamaraj Roshini Palanivelu Sathya Raman Pushpa Rangarajan Manimaran Kasirajan Subrahmaniyan Datchinamoorthy Sassikumar Ramalingam Suresh Unraveling the genetic potential of native rice (Oryza sativa L.) landraces for tolerance to early-stage submergence Frontiers in Plant Science anaerobic germination tolerance genetic diversity grain type rapid shoot elongation response index |
| title | Unraveling the genetic potential of native rice (Oryza sativa L.) landraces for tolerance to early-stage submergence |
| title_full | Unraveling the genetic potential of native rice (Oryza sativa L.) landraces for tolerance to early-stage submergence |
| title_fullStr | Unraveling the genetic potential of native rice (Oryza sativa L.) landraces for tolerance to early-stage submergence |
| title_full_unstemmed | Unraveling the genetic potential of native rice (Oryza sativa L.) landraces for tolerance to early-stage submergence |
| title_short | Unraveling the genetic potential of native rice (Oryza sativa L.) landraces for tolerance to early-stage submergence |
| title_sort | unraveling the genetic potential of native rice oryza sativa l landraces for tolerance to early stage submergence |
| topic | anaerobic germination tolerance genetic diversity grain type rapid shoot elongation response index |
| url | https://www.frontiersin.org/articles/10.3389/fpls.2023.1083177/full |
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