Evidence map›Paper›PMID 40982209›Full record

ArticleGenes & genomics2025

Expression profiling of flowering time pathway in the L-ascorbate peroxidase 9 (APX9) near-isogenic line derived from an interspecific cross between Korean Japonica rice (Oryza sativa L.) and Oryza rufipogon.

Yun-A Jeon, Hyun-Sook Lee, Cheryl Adeva, Sang-Nag Ahn, Kyu-Chan Shim

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Article in Genes & genomics, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 authors.

Yun-A JeonDepartment of Crop Science, College of Agriculture and Life Science, Chungnam National University, Daejeon, 34134, Republic of Korea.
Hyun-Sook LeeDepartment of Crop Science, College of Agriculture and Life Science, Chungnam National University, Daejeon, 34134, Republic of Korea.
Cheryl AdevaDepartment of Crop Science, College of Agriculture and Life Science, Chungnam National University, Daejeon, 34134, Republic of Korea.
Sang-Nag AhnDepartment of Crop Science, College of Agriculture and Life Science, Chungnam National University, Daejeon, 34134, Republic of Korea.
Kyu-Chan ShimDepartment of Crop Science, College of Agriculture and Life Science, Chungnam National University, Daejeon, 34134, Republic of Korea. kcshim@cnu.ac.kr.ORCID http://orcid.org/0000-0002-3020-7104

Funding

Chungnam National University Chungnam National University
6 · The paper itself

Abstract

backgroundFlowering time (referred to as heading date in rice) is a characteristic controlled by quantitative trait loci (QTLs). Heading date is an important agronomic trait that determines yield in rice and is precisely regulated by various exogenous and endogenous factors.

objectiveTo investigate the role of the ascorbate peroxidase 9 (APX9) gene in the flowering mechanism, we examined the expression levels of flowering time regulators under long-day conditions (14 h light/10 hours dark) and natural long-day conditions.

methodsA BC

resultsThe NIL exhibited delayed flowering under both controlled and natural long-day conditions compared to Hwaseong. Real-time PCR analysis indicated that APX9 influences the upstream pathway of flowering time regulation. Over-expression lines showed delayed flowering relative to Hwaseong, whereas T-DNA mutants flowered earlier than the control cultivar, Dongjin. These findings support a role for APX9 in modulating flowering time in rice.

conclusionThe APX9 is known for its antioxidant activity and its response to various abiotic stresses. The APX9 may play a role in the upstream regulation of the flowering pathway. These findings will be valuable in understanding the effect of APX9 during flowering stages. It would also be interesting to explore the relationship between hydrogen peroxide (H

Indexed as

Ascorbate PeroxidasesFlowersOryzaPlant ProteinsGene Expression ProfilingGene Expression Regulation, PlantQuantitative Trait LociAscorbate PeroxidasesPlant ProteinsAPX9floweringheading dateOryza rufipogonRice

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.