qGLF5 from Oryza rufipogon Griff. improves kernel shape, plant architecture, and yield in rice

Wang, Yijun; Liang, Xiaoya; Gong, Gaoyang; Zhang, Guiquan; Zhao, Hongyuan; Zheng, Zhenwu; Wang, Chihang; Zhu, Haitao; Huang, Jinyan; Li, Zhan; Bu, Suhong; Liu, Guifu; Wang, Shaokui; Liu, Zupei

doi:10.1007/s00122-023-04478-9

Theor Appl Genet

2023

DOI: 10.1007/s00122-023-04478-9

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qGLF5 from Oryza rufipogon Griff. improves kernel shape, plant architecture, and yield in rice

Yijun Wang,

Xiaoya Liang,

Gaoyang Gong

et al.

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2024

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Cited by 2 publications

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Rice Regeneration in a Genebank: 21 Years of Data

Sansoni,

Sena,

Pozzi

et al. 2024

Agronomy

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Genebanks, other than their pivotal role as diversity conservation repositories, regenerate part of their collection every year to maintain their material in optimal conditions. During regeneration cycles, morpho-physiological data are collected, contributing to the creation of large datasets that offer a valuable resource of information. In Italy, rice cultivation has been documented since the second half of the 15th century, and nowadays, Italy contributes more than 50% of the total European rice production. The ex situ collection of rice (mainly Oryza sativa L. subgroup japonica) held at the Research Center for Cereal and Industrial Crops (CREA-CI) of Vercelli is quite unique in Italy and its establishment dates back to the beginning of the 20th century. The collection is hereby presented through the analysis of 21 years of historic data, from 2001 to 2022, in 17 different locations in Northern Italy, for a total of 6592 entries, 677 genotypes analyzed and 9 phenotypic traits under investigation. An R script has been developed to analyze the dataset. The BLUEs calculation, heritability, PCA and correlation with weather data provided a comprehensive overview of the germplasm stored in the genebank. The great variability and phenotypic diversity were assessed, key aspects from the perspective of breeding programs. This work starts a re-evaluation of historic data, historic cultivars, and represents the first step toward the shift of the genebank to a bio-digital resource center.

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Rice Regeneration in a Genebank: 21 Years of Data

Sansoni,

Sena,

Pozzi

et al. 2024

Agronomy

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Characterization of the ddt1 Mutant in Rice and Its Impact on Plant Height Reduction and Water Use Efficiency

Ruan,

Jiang,

et al. 2024

IJMS

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Rice (Oryza sativa L.), a fundamental global staple, nourishes over half of the world’s population. The identification of the ddt1 mutant in rice through EMS mutagenesis of the indica cultivar Shuhui527 revealed a dwarf phenotype, characterized by reduced plant height, smaller grain size, and decreased grain weight. Detailed phenotypic analysis and map-based cloning pinpointed the mutation to a single-base transversion in the LOC_Os03g04680 gene, encoding a cytochrome P450 enzyme, which results in a premature termination of the protein. Functional complementation tests confirmed LOC_Os03g04680 as the DDT1 gene responsible for the observed phenotype. We further demonstrated that the ddt1 mutation leads to significant alterations in gibberellic acid (GA) metabolism and signal transduction, evidenced by the differential expression of key GA-related genes such as OsGA20OX2, OsGA20OX3, and SLR1. The mutant also displayed enhanced drought tolerance, as indicated by higher survival rates, reduced water loss, and rapid stomatal closure under drought conditions. This increased drought resistance was linked to the mutant’s improved antioxidant capacity, with elevated activities of antioxidant enzymes and higher expression levels of related genes. Our findings suggest that DDT1 plays a crucial role in regulating both plant height and drought stress responses. The potential for using gene editing of DDT1 to mitigate the dwarf phenotype while retaining improved drought resistance offers promising avenues for rice improvement.

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qGLF5 from Oryza rufipogon Griff. improves kernel shape, plant architecture, and yield in rice

Cited by 2 publications

References 45 publications

Rice Regeneration in a Genebank: 21 Years of Data

Rice Regeneration in a Genebank: 21 Years of Data

Characterization of the ddt1 Mutant in Rice and Its Impact on Plant Height Reduction and Water Use Efficiency

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