Genetic analysis and mapping of dwarf gene without yield penalty in a γ-ray-induced wheat mutant

Letter Biochemistry & Molecular Biology

Cloning and functional characterization of Rht8, a Green Revolutionreplacement gene in wheat

Hongchun Xiong et al.

MOLECULAR PLANT (2022)

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Letter Biochemistry & Molecular Biology

A natural variation in Ribonuclease H-like gene underlies Rht8 to confer Green Revolutiontrait in wheat

Lingling Chai et al.

MOLECULAR PLANT (2022)

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Article Plant Sciences

Rht24b, an ancient variation of TaGA2ox-A9, reduces plant height without yield penalty in wheat

Xiuling Tian et al.

Summary: The study identified the causal gene of Rht24 in wheat, revealing that the dwarfing allele Rht24b not only reduced plant height but also increased nitrogen use efficiency and photosynthetic rate without yield penalty. Originating in wild emmer, Rht24b has undergone both natural and artificial selection, being detected in over half of wild emmer and wheat accessions.

NEW PHYTOLOGIST (2022)

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Article Plant Sciences

The exogenous GA3 greatly affected the grain-filling process of semi-dwarf gene Rht4 in bread wheat

Qiumei Lu et al.

Summary: This study evaluated the responsiveness of the Rht4 gene to exogenous GA(3) and found that GA(3) treatment significantly increased important traits such as plant height, grain-filling rate, and yield in dwarf lines. Furthermore, the quality traits of the dwarf lines were greatly improved. These findings provide valuable insights for wheat breeding and the characterization of regulatory mechanisms.

PHYSIOLOGIA PLANTARUM (2022)

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Article Multidisciplinary Sciences

An autoactive NB-LRR gene causes Rht13 dwarfism in wheat

Philippa Borrill et al.

Summary: The study reveals a new reduced height (Rht) gene, Rht13, which encodes a nucleotide-binding site/leucine-rich repeat (NB-LRR) gene. Unlike the traditional gibberellin-insensitive genes, Rht13 reduces height by autoactivating the NB-LRR gene and up-regulating pathogenesis-related genes associated with cell wall remodeling. This finding provides new insights into using autoactive NB-LRR genes as semidwarfing genes in crop breeding.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2022)

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Article Plant Sciences

Characterizing reduced height wheat mutants for traits affecting abiotic stress and photosynthesis during seedling growth

Amita Mohan et al.

Summary: The study reveals that high-yielding wheat cultivars are most successful in highly productive environments, but provide marginal benefits in less favorable conditions. Semidwarf genes impact early growth and grain yield, with potential implications in breeding programs for arid and semiarid regions. Further research is needed on other reduced-height mutants in wheat to understand their molecular mechanisms.

PHYSIOLOGIA PLANTARUM (2021)

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Article Agronomy

A 36 Mb terminal deletion of chromosome 2BL is responsible for a wheat semi-dwarf mutation

Qiuhong Wu et al.

Summary: Reduced plant height is an important trait related to lodging resistance and crop yield, and the use of reduced height genes in breeding can lead to modern high-yielding wheat varieties with less lodging. A mutant DD399 with a reduced height phenotype was found to have a 36 Mb terminal deletion in chromosome 2BL.

CROP JOURNAL (2021)

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Review Plant Sciences