2026-03-12T08:16:42Z https://jircas.repo.nii.ac.jp/oai

oai:jircas.repo.nii.ac.jp:02000413 2024-08-06T01:33:49Z 1698892316070:1721355674911

Towards development of drought tolerant upland rice through international research collaborations from gene discovery to trait evaluation: in case of OsNAC6 gene as example Selvaraj, Michael Gomez Ishizaki, Takuma Nakashima, Kazuo Yamaguchi-Shinozaki, Kazuko Dedicova, Beata Rane, Jagadish Valencia, Milton Alba Lucia, Chavez Ishitani, Manabu open access upland rice trait evaluation drought tolerance transgenic approach Extreme weather events such as droughts and heat waves are likely to become more common in recent warmer climate. Thus, development of drought tolerant rice varieties has been an urgent research goal since rice is the staple food of many people on planet. To speed up development of drought tolerant rice varieties, unique research collaborations between advanced institutions and international research organization were developed and led by Japan International Research Center for Agricultural Sciences (JIRCAS). This collaboration brought diverse expertise together to facilitate a product development pipeline from gene to trait evaluation under target field environments. One of genes tested in this study was OsNAC6 gene. Twenty-eight independent transgenic lines that possessed homozygous single copy of introduced OsNAC6 gene were generated from a commercial tropical japonica variety, Curinga. Evaluation of the transgenic lines under controlled and confined rainfed conditions in Colombia revealed superior performance of some transgenic lines in grain yield compared with non-transgenic plants. The transgenic lines of other genetic backgrounds, NERICA1 and NERICA4, also showed increased grain yield under the rainfed conditions. The results strongly suggest that the gene works regardless of genetic background as common genetic component for drought tolerance in rice under field conditions leading to increased grain yield. Japan International Research Center for Agricultural Sciences 2020-08-20 eng book part VoR https://doi.org/10.34556/0002000413 https://jircas.repo.nii.ac.jp/records/2000413 10.34556/0002000413 https://doi.org/10.34556/0002000404 Development of biotechnologies and biotech crops for stable food production under adverse environments and changing climate conditions https://doi.org/10.13039/501100003993 Ministry of Agriculture, Forestry and Fisheries, Japan (MAFF) Development of Abiotic Stress Tolerant Crops by DREB Genes; Development of Drought-tolerant Crops for Developing Countries 1341-710X AA11159468 JIRCAS Working Report : Development of biotechnologies and biotech crops for stable food production under adverse environments and changing climate conditions 91 35 44 https://jircas.repo.nii.ac.jp/record/2000413/files/jircas_working_report91-_35-44.pdf application/pdf 1.16MB 2024-07-25 2020-08-20