2014
DOI: 10.1104/pp.114.250738
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Induced Variations in Brassinosteroid Genes Define Barley Height and Sturdiness, and Expand the Green Revolution Genetic Toolkit      

Abstract: Reduced plant height and culm robustness are quantitative characteristics important for assuring cereal crop yield and quality under adverse weather conditions. A very limited number of short-culm mutant alleles were introduced into commercial crop cultivars during the Green Revolution. We identified phenotypic traits, including sturdy culm, specific for deficiencies in brassinosteroid biosynthesis and signaling in semidwarf mutants of barley (Hordeum vulgare). This set of characteristic traits was explored to… Show more

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Cited by 122 publications
(192 citation statements)
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“…Brachypodium distachyon BRI1-RNAi mutants with decreased BRI1 gene expression level showed decreased plant height with compact stature, narrow and short leaf, short internode, decreased BR response, and modulated expression level of BR-related genes (Feng et al, 2015). Barley uzu1.a mutant with altered brassinosteroid signalling due to amino acid exchange in HvBRI1 gene was shown to have altered leaf architecture, besides other typical BRinsensitive phenotypic traits (Dockter et al, 2014), and similar effect was observed for maize plants also exhibited shorter leaf blades and sheathes after knock-down of the expression of BRI1 homologs (Kir et al, 2015). Even though most researches primarily stress the influence of genes involved in brassinosteroid signalling on plant height, the impact on leaf architecture is also apparent.…”
Section: Discussionmentioning
confidence: 99%
“…Brachypodium distachyon BRI1-RNAi mutants with decreased BRI1 gene expression level showed decreased plant height with compact stature, narrow and short leaf, short internode, decreased BR response, and modulated expression level of BR-related genes (Feng et al, 2015). Barley uzu1.a mutant with altered brassinosteroid signalling due to amino acid exchange in HvBRI1 gene was shown to have altered leaf architecture, besides other typical BRinsensitive phenotypic traits (Dockter et al, 2014), and similar effect was observed for maize plants also exhibited shorter leaf blades and sheathes after knock-down of the expression of BRI1 homologs (Kir et al, 2015). Even though most researches primarily stress the influence of genes involved in brassinosteroid signalling on plant height, the impact on leaf architecture is also apparent.…”
Section: Discussionmentioning
confidence: 99%
“…One of the genes with validated function is HvBRI1 , encoding a BR receptor (Chono et al, 2003; Saisho et al, 2004; Gruszka et al, 2011a), whereas only few genes: HvDWARF, HvBRD, HvCPD , and HvDIM encoding enzymes mediating BR biosynthesis were identified and functionally analyzed (Gruszka et al, 2011b; Dockter et al, 2014). However, it should be noted that many aspects of BR biosynthesis and its regulation in barley are still poorly understood (Gruszka et al, 2016).…”
Section: Introductionmentioning
confidence: 99%
“…However, it should be noted that many aspects of BR biosynthesis and its regulation in barley are still poorly understood (Gruszka et al, 2016). It was reported that some of the newly identified semi-dwarf barley mutants showing defects in BR signaling or biosynthesis may serve as an alternative in breeding programs, especially in face of the global climate change (Dockter et al, 2014). However, research on physiological reaction of the barley semi-dwarf BR mutants to drought stress has been conducted only recently.…”
Section: Introductionmentioning
confidence: 99%
“…An unprecedented increase in food grain production in the last century, which has been called as "Green Revolution," was achieved by growing lodging-resistant, semi-dwarf varieties of wheat and rice. 1,2 Controlling of plant architecture is one of the most important aspects in modern agriculture. Selecting shorter cultivars with dwarfing genes have made great contributions.…”
Section: Introductionmentioning
confidence: 99%