Genetic mapping and identification of Rht8-B1 that regulates plant height in wheat

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 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 Biochemistry & Molecular Biology

Ribonuclease H-like gene SMALL GRAIN2 regulates grain size in rice through brassinosteroid signaling pathway

Yunshuai Huang et al.

Summary: This study investigates the relationship between the brassinosteroid (BR) signaling pathway and grain size. The SG2 gene is identified as a positive regulator downstream of GSK2 in the BR signaling pathway and plays a role in controlling grain size by interacting with OsOFP19.

JOURNAL OF INTEGRATIVE PLANT BIOLOGY (2022)

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Review Biology

Wheat genomic study for genetic improvement of traits in China

Jun Xiao et al.

Summary: This review summarizes recent advances in genomic research and genetic improvement of bread wheat, with a focus on the contributions made by Chinese scientists. The availability of multiple reference wheat genome assemblies and cutting-edge technologies such as precise genome editing tools has opened up new possibilities for functional genomic research in wheat. Insights gained from these advances will enhance our understanding of the molecular mechanisms and regulatory networks underlying agronomic traits, and facilitate the development of modern breeding techniques for more sustainable agriculture worldwide.

SCIENCE CHINA-LIFE SCIENCES (2022)

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Article Plant Sciences

ggComp enables dissection of germplasm resources and construction of a multiscale germplasm network in wheat

Zhengzhao Yang et al.

Summary: Accurate germplasm characterization is crucial for crop genetic improvement, but it is challenging for crops like bread wheat. This study proposes a genomic strategy called ggComp, which identifies pairwise germplasm resource-based Identity-By-Descent (gIBD) blocks, and constructs a multi-scale genomic-based germplasm network.

PLANT PHYSIOLOGY (2022)

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Article Biotechnology & Applied Microbiology

TAC4controls tiller angle by regulating the endogenous auxin content and distribution in rice

Hua Li et al.

Summary: TAC4 is identified as a novel regulator of rice tiller angle, influencing rice shoot gravitropism by increasing the indole acetic acid content; Loss of TAC4 function leads to a significant increase in tiller angle, providing potential gene resource for improving rice plant architecture.

PLANT BIOTECHNOLOGY JOURNAL (2021)

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Article Agronomy

Identification and validation of two major QTLs for spike compactness and length in bread wheat (Triticum aestivum L.) showing pleiotropic effects on yield-related traits

Tao Li et al.

Summary: Two major and stable QTLs for spike compactness and length in wheat were identified and validated in multiple genetic backgrounds and environments. These QTLs also showed pleiotropic effects on yield-related traits, indicating their potential application in wheat breeding.

THEORETICAL AND APPLIED GENETICS (2021)

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Article Biology