Hd1, Ghd7, and DTH8 synergistically determine the rice heading date and yield-related agronomic traits

Sun, Kangli; Huang, Minghui; Zong, Wubei; Xiao, Dongdong; Chen, Lei; Luo, Yanqiu; Song, Yingang; Li, Shengting; Yu, Hao; Luo, Wenjun; Xu, Bingqun; Guo, Xiaotong; Wei, Guangliang; Chen, Letian; Liu, Yao-Guang; Guo, Jingxin

doi:10.1016/j.jgg.2022.02.018

Cited by 38 publications

(20 citation statements)

References 52 publications

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“…2019 ), Hd1 / Ghd7 / DTH8 ( Zong et al . 2021 ; Sun et al . 2022 ), Hd1 / DTH8 ( Fujino 2020 ), and Ghd7 / Ghd8 / Hd1 ( Zhang et al .…”

Section: Discussionmentioning

confidence: 99%

Allelic combinations of Hd1, Hd16, and Ghd7 exhibit pleiotropic effects on agronomic traits in rice

Lee,

Jeung,

2024

G3: Genes, Genomes, Genetics

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Heading date is a critical agronomic trait that significantly affects grain yield and quality in rice. As early heading is typically associated with reduced yield due to shorter growth duration, it is essential to harness optimum heading date genes and their allelic combinations to promote heading while minimizing yield penalties. In this study, we identified quantitative trait loci (QTLs) for heading date and other major agronomic traits in a recombinant inbred line (RIL) population derived from a cross between Koshihikari and Baegilmi. Analyses on three major QTLs for heading date and their underlying genes (Hd1, Hd16, and Ghd7) revealed their pleiotropic effects on culm length, panicle length, and head rice percentage. Additionally, Ghd7 exhibited pleiotropic effects on panicle number and grain size. Among eight different types of allelic combinations of the three heading date genes, RILs carrying a single nonfunctional hd16 or ghd7 under the functional background of the other two genes (Hd1hd16Ghd7 and Hd1Hd16ghd7) showed potential for maintaining yield and quality-related traits while accelerating heading. These results provide valuable insights for fine-tuning heading dates in rice breeding programs.

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“…2019 ), Hd1 / Ghd7 / DTH8 ( Zong et al . 2021 ; Sun et al . 2022 ), Hd1 / DTH8 ( Fujino 2020 ), and Ghd7 / Ghd8 / Hd1 ( Zhang et al .…”

Section: Discussionmentioning

confidence: 99%

Allelic combinations of Hd1, Hd16, and Ghd7 exhibit pleiotropic effects on agronomic traits in rice

Lee,

Jeung,

2024

G3: Genes, Genomes, Genetics

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“…The interactions of Hd1, Ghd7, DTH8, and PRR37 make a complicated scenario, which plays a critical role in the rice growth period and yield Sun et al 2022). However, the longer growth duration for larger use of available temperature and light does not always result in higher grain production.…”

Section: Discussionmentioning

confidence: 99%

Early flowering of the transgenic rice with AtNF-YB1

Ma¹,

Feng

Pan

et al. 2022

Preprint

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Grain yield and growth period are two critical agronomic traits for a rice cultivar to be used in the field. The growth period is determined by flowering time, which also greatly affects grain yield. An Arabidopsis gene, AtNF-YB1, was introduced into rice, including Kasalath and two hybrids, Jinfeng X Chenghui 727 and Jinfeng XChuanhui 907. All the transgenic rice showed early flowering in both natural long-day (NLD) and natural short-day (NSD) conditions because of suppression of Ghd7 transcription resulting in early activating the flowering transition. The of pure line of Kasalath with the gene showed also shorter plant height and less grain yield with a decrease in spike length and grain number but more productive panicle. But, for the hybrids, a little or no reduction of spike length, grain number, and more productive panicles were observed so that grain yields were kept or even increased under NLD conditions. RNA-Seq further demonstrated that three pathways related to plant photosynthesis were markedly up-regulated in the transgenic Jinfeng B and hybrid Jinfeng X Chuanhui 907. Measurements of photosynthetic parameters indicated that photosynthetic rates were up-regulated with an increase of chlorophyll contents in the transgenic Jinfeng B and hybrid Jinfeng XChuanghui 907. The results suggest that AtNF-YB1could be useful for creating rice variety with early ripening, particularly for hybrid rice.

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“…PH was measured as the distance from the ground surface to the tip of the tallest panicle, and PL is the distance from the panicle base to the uppermost spikelet. NPB and NSB were measured as described previously [ 22 ]. NT refers to the effective tiller number.…”

Section: Methodsmentioning

confidence: 99%

Double Mutation of Days to Heading 2 and CONSTANS 3 Improves Agronomic Performance of Japonica Rice under Short Daylight Conditions in Southern China

Wang

Zhu

Wang

et al. 2023

IJMS

Self Cite

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Some progress has been made in understanding the pathways related to rice heading, but their applications to breeding japonica rice varieties adapted to grow in low-latitude areas (“indica to japonica”) are limited. We edited eight adaptation-related genes via a lab-established CRISPR/Cas9 system in a japonica variety, Shennong265 (SN265). All T0 plants and their progeny bearing random mutation permutations were planted in southern China and screened for changes in heading date. We found that the double mutant of Days to heading 2 (DTH2) and CONSTANS 3 (OsCO3) (dth2-osco3), two CONSTANS-like (COL) genes, showed significantly delayed heading under both short-day (SD) and long-day (LD) conditions in Guangzhou and manifested great yield increase under SD conditions. We further demonstrated that the heading-related Hd3a-OsMADS14 pathway was down-regulated in the dth2-osco3 mutant lines. The editing of the COL genes DTH2 and OsCO3 greatly improves the agronomic performance of japonica rice in Southern China.

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Hd1, Ghd7, and DTH8 synergistically determine the rice heading date and yield-related agronomic traits

Cited by 38 publications

References 52 publications

Allelic combinations of Hd1, Hd16, and Ghd7 exhibit pleiotropic effects on agronomic traits in rice

Allelic combinations of Hd1, Hd16, and Ghd7 exhibit pleiotropic effects on agronomic traits in rice

Early flowering of the transgenic rice with AtNF-YB1

Double Mutation of Days to Heading 2 and CONSTANS 3 Improves Agronomic Performance of Japonica Rice under Short Daylight Conditions in Southern China

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