MADS1 maintains barley spike morphology at high ambient temperatures

Li, Gang; Kuijer, Hendrik N. J.; Yang, Xiujuan; Liu, Huiran; Shen, Chaoqun; Jin, Shi; Betts, Natalie S.; Tucker, Matthew R.; Liang, Wanqi; Waugh, Robbie; Burton, Rachel A.; Zhang, Dabing

doi:10.1038/s41477-021-00957-3

Cited by 50 publications

(63 citation statements)

References 75 publications

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“…MIKCc genes play an important role in grass inflorescence architecture and spikelet differentiation (Digel et al, 2015;Liu et al, 2015;Li et al, 2021;Wang et al, 2021). In our study, SVP-like genes, HvMADS22, HvMADS47 and HvMADS55, and one A-class gene HvMADS14 (VRN1), and E-class gene HvMADS34, show a high transcription level at the early inflorescence development stage before spikelet differentiation, suggesting a role for these genes in inflorescence meristem maintenance and spikelet meristem identity.…”

Section: Mikcc Gene Expression Implies a Role In Inflorescence- Spikelet-and Floret Meristemssupporting

confidence: 59%

“…Mutants in rice show that E-class OsMADS34 gene is involved in inflorescence branching (Gao et al, 2010;Kobayashi et al, 2010), and unsurprisingly, OsMADS34 is highly expressed in the inflorescence branch meristem of rice (Harrop et al, 2016). However, mutation of barley HvMADS34 does not show the change of inflorescence architecture (Li et al, 2021). When comparing E-class gene expression in the early inflorescence meristem between barley and rice, the early peak of HvMADS34 expression is conserved (Figures 7A,B).…”

Section: Mikcc Gene Expression Implies a Role In Inflorescence- Spikelet-and Floret Meristemsmentioning

confidence: 97%

“…Recently, barley E-class MADS-box protein, HvMADS1, has been reported to be responsible for maintaining an unbranched spike architecture at high temperatures; the hvmads1 mutant shows the changed inflorescence meristem determinacy at warm temperature conditions, forming a branched inflorescence-like structure (Li et al, 2021). Thus, the Triticeae spikes merely suppress inflorescence branching is given credence by the branching phenotype of the com2 (COMPOSITUM2) and com1/bdi1 (COMPOSITUM1/BRANCHED AND INDETERMINATE SPIKELET 1) mutants in barley and the tetraploid 'miracle wheat' (Poursarebani et al, 2015(Poursarebani et al, , 2020Shang et al, 2020) and in the loss-of-function of barley HvMADS1 mutant under high ambient temperature (Li et al, 2021) which show that most of the components for a branching inflorescence are still present in some Triticeae.…”

Section: Mikcc Gene Expression Implies a Role In Inflorescence- Spikelet-and Floret Meristemsmentioning

confidence: 99%

“…Their function is generally not well understood yet in plants, with some exceptions (Colombo et al, 2008;Callens et al, 2018). Additionally, MADS-box genes have also been reported to play an important role in abiotic stress, thermal regulation and plastic developmental responses in plants (Castelán-Muñoz et al, 2019;Li et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

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Transcript Profiling of MIKCc MADS-Box Genes Reveals Conserved and Novel Roles in Barley Inflorescence Development

et al. 2021

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MADS-box genes have a wide range of functions in plant reproductive development and grain production. The ABCDE model of floral organ development shows that MADS-box genes are central players in these events in dicotyledonous plants but the applicability of this model remains largely unknown in many grass crops. Here, we show that transcript analysis of all MIKCc MADS-box genes through barley (Hordeum vulgare L.) inflorescence development reveals co-expression groups that can be linked to developmental events. Thirty-four MIKCc MADS-box genes were identified in the barley genome and single-nucleotide polymorphism (SNP) scanning of 22,626 barley varieties revealed that the natural variation in the coding regions of these genes is low and the sequences have been extremely conserved during barley domestication. More detailed transcript analysis showed that MADS-box genes are generally expressed at key inflorescence developmental phases and across various floral organs in barley, as predicted by the ABCDE model. However, expression patterns of some MADS genes, for example HvMADS58 (AGAMOUS subfamily) and HvMADS34 (SEPALLATA subfamily), clearly deviate from predicted patterns. This places them outside the scope of the classical ABCDE model of floral development and demonstrates that the central tenet of antagonism between A- and C-class gene expression in the ABC model of other plants does not occur in barley. Co-expression across three correlation sets showed that specifically grouped members of the barley MIKCc MADS-box genes are likely to be involved in developmental events driving inflorescence meristem initiation, floral meristem identity and floral organ determination. Based on these observations, we propose a potential floral ABCDE working model in barley, where the classic model is generally upheld, but that also provides new insights into the role of MIKCc MADS-box genes in the developing barley inflorescence.

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Section: Mikcc Gene Expression Implies a Role In Inflorescence- Spikelet-and Floret Meristemssupporting

confidence: 59%

Section: Mikcc Gene Expression Implies a Role In Inflorescence- Spikelet-and Floret Meristemsmentioning

confidence: 97%

Section: Mikcc Gene Expression Implies a Role In Inflorescence- Spikelet-and Floret Meristemsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Transcript Profiling of MIKCc MADS-Box Genes Reveals Conserved and Novel Roles in Barley Inflorescence Development

et al. 2021

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“…In rice, the LARGE2-APO1/APO2 module controls panicle size and grain number and is a promising target for yield improvement ( Huang et al, 2021 ). In barley, HvMADS1 was found to be responsible for maintaining the unbranched spike architecture at relatively high temperatures ( Li et al, 2021a ), while the AP2L-5 like proteins are evolutionarily conserved in grasses and able to promote inflorescence meristem activity and to restrict floret number per spikelet ( Zhong et al, 2021 ). In wheat, the domestication gene Q participated in spike length and morphology ( Faris et al, 2003 ; Sormacheva et al, 2015 ).…”

Section: Introductionmentioning

confidence: 99%

A Multi-Omics Approach for Rapid Identification of Large Genomic Lesions at the Wheat Dense Spike (wds) Locus

Wang¹,

Shu²,

Liu³

et al. 2022

Front. Plant Sci.

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Optimal spike architecture provides a favorable structure for grain development and yield improvement. However, the number of genes cloned to underlie wheat spike architecture is extremely limited. Here, we obtained a wheat dense spike mutant (wds) induced by 60Co treatment of a common wheat landrace Huangfangzhu that exhibited significantly reduced spike and grain lengths. The shortened spike length was caused by longitudinal reduction in number and length of rachis cells. We adopted a multi-omics approach to identify the genomic locus underlying the wds mutant. We performed Exome Capture Sequencing (ECS) and identified two large deletion segments, named 6BL.1 at 334.8∼424.3 Mb and 6BL.2, 579.4∼717.8 Mb in the wds mutant. RNA-seq analysis confirmed that genes located in these regions lost their RNA expression. We then found that the 6BL.2 locus was overlapping with a known spike length QTL, qSL6B.2. Totally, 499 genes were located within the deleted region and two of them were found to be positively correlated with long spike accessions but not the ones with short spike. One of them, TraesCS6B01G334600, a well-matched homolog of the rice OsBUL1 gene that works in the Brassinosteroids (BR) pathway, was identified to be involved in cell size and number regulation. Further transcriptome analysis of young spikes showed that hormone-related genes were enriched among differentially expressed genes, supporting TraesCS6B01G334600 as a candidate gene. Our work provides a strategy to rapid locate genetic loci with large genomic lesions in wheat and useful resources for future wheat study.

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Cereal Architecture and Its Manipulation

Dixon

Esse

Hirsz

et al. 2022

Annual Plant Reviews Online

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Our lives depend on an incredibly small number of cereal species whose grain provides more calories to our diet than any other source. The extraordinary productivity of cultivated cereals reflects millennia of selection, recent directed breeding, and modern agricultural practices. Here, we examine selected architectural and agronomic features of major cereal body parts: leaf, branch, inflorescence, stem, and root; and discuss how their manipulation enhanced crop performance. Highlighting synergistic research across laboratory models and field‐based systems, we consider how diversified molecular circuitry, novel regulators and conserved components of genetic, hormonal, and molecular mechanisms control cereal architecture. Lastly, we emphasise the agricultural importance of developmental decisions during cereal growth and propose future perspectives for robust architectural improvement, made ever more urgent by our accelerating climate crisis.

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MADS1 maintains barley spike morphology at high ambient temperatures

Cited by 50 publications

References 75 publications

Transcript Profiling of MIKCc MADS-Box Genes Reveals Conserved and Novel Roles in Barley Inflorescence Development

Transcript Profiling of MIKCc MADS-Box Genes Reveals Conserved and Novel Roles in Barley Inflorescence Development

A Multi-Omics Approach for Rapid Identification of Large Genomic Lesions at the Wheat Dense Spike (wds) Locus

Cereal Architecture and Its Manipulation

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