An R2R3‐MYB network modulates stem strength by regulating lignin biosynthesis and secondary cell wall thickening in herbaceous peony

The Plant Journal, Год журнала: 2023, Номер 113(6), С. 1237 - 1258

Опубликована: Янв. 12, 2023

Stem strength is an important agronomic trait affecting plant lodging, and plays essential role in the quality yield of plants. Thickened secondary cell walls stems provide mechanical that allows plants to stand upright, but regulatory mechanism wall thickening stem cut flowers remains unclear. In this study, first, a total 11 non-redundant Paeonia lactiflora R2R3-MYBs related were identified isolated from cut-flower herbaceous peony, among which PlMYB43, PlMYB83 PlMYB103 most upregulated differentially expressed genes. Then, expression characteristics revealed these three specifically acted as transcriptional activators. Next, biological function verification showed P. positively regulated strength, thickness lignin deposition. Furthermore, yeast-one-hybrid dual luciferase reporter assays demonstrated they could bind promoter caffeic acid O-methyltransferase gene (PlCOMT2) and/or laccase (PlLAC4), two key genes involved biosynthesis. addition, PlLAC4 increasing deposition was confirmed by virus-induced silencing overexpression. Moreover, also act activator PlMYB43. The findings study propose network modulating biosynthesis for improving lodging resistance, resource molecular genetic engineering breeding flowers.

Язык: Английский

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Crop Lodging and The Roles of Lignin, Cellulose, and Hemicellulose in Lodging Resistance

Agronomy, Год журнала: 2022, Номер 12(8), С. 1795 - 1795

Опубликована: Июль 29, 2022

With increasingly frequent extreme weather events, lodging has become an important limiting factor for crop yield and quality mechanical harvesting. Lodging resistance is a precondition “super high yield” crops, the question of how to achieve guarantee urgent scientific problem. Here, we summarize anatomical results stems find that closely related stem components. Therefore, focus on roles lignin, cellulose hemicellulose, which provide rigidity strength, in resistance. By combing synthetic regulatory molecular network only some genes involved biosynthesis regulation cellulose, hemicellulose have been shown significantly affect However, many relevant remain be studied sufficient detail determine whether they can applied breeding This work provides valuable information future studies

Язык: Английский

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Characteristics of lodging resistance of high-yield winter wheat as affected by nitrogen rate and irrigation managements

Journal of Integrative Agriculture, Год журнала: 2022, Номер 21(5), С. 1290 - 1309

Опубликована: Апрель 7, 2022

High yields of wheat are mainly obtained through a high level nitrogen and irrigation supplementation. However, excessive supplication increase the risk lodging. The main objectives this work were to clarify capacity lodging resistance in response irrigation, as well explore effective ways improving high-yield cultivar. In study, field experiments conducted 2015–2016 2016–2017 growing seasons. A cultivar Jimai 22 (JM22), which is widely planted northern Huang-Huai winter region, was grown at Tai'an, Shandong Province, under three rates four treatments. increased with rate, indicated by increasing index (LI) rate across both With increasing, plant height, basal internode length center gravity positively correlated LI, significantly. While density 2nd (for culm leaf sheath) cell wall component contents, negatively decreased conspicuous along increased. Increasing supplementation thickness, breaking strength sheath within limits stem strength. Among treatments, application 240 kg ha–1 600 m3 jointing anthesis stages resulted highest yield strongest stem. suitable height ensures sufficient biomass for yield, higher stiffness, primarily attributed thicker wall, greater sheaths contents characteristics that should be taken into account resistance.

Язык: Английский

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Lodging prevention in cereals: Morphological, biochemical, anatomical traits and their molecular mechanisms, management and breeding strategies

Field Crops Research, Год журнала: 2022, Номер 289, С. 108733 - 108733

Опубликована: Окт. 25, 2022

Язык: Английский

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Unveiling shared genetic regulators of plant architectural and biomass yield traits in sorghum

Journal of Experimental Botany, Год журнала: 2025, Номер unknown

Опубликована: Янв. 9, 2025

Abstract Sorghum is emerging as an ideal genetic model for designing high-biomass bioenergy crops. Biomass yield, a complex trait influenced by various plant architectural characteristics, typically regulated numerous genes. This study aimed to dissect the regulators underlying fourteen traits and ten biomass yield in Association Panel across two growing seasons. We identified 321 associated loci through genome-wide association studies (GWAS), involving 234,264 single nucleotide polymorphisms (SNPs). These include genes with known associations traits, such ‘maturity’, ‘dwarfing (Dw)’, ‘leafbladeless1’, well several uncharacterized not previously linked these traits. also 22 pleiotropic variation multiple phenotypes. Three of loci, located on chromosomes 3 (S03_15463061), 6 (S06_42790178; Dw2), 9 (S09_57005346; Dw1), exerted significant consistent effects both Additionally, we three genomic hotspots 6, 7, 9, each containing SNPs architecture Chromosome-wise correlation analyses revealed blocks positively near or within same regions. Finally, correlation-based network analysis showed that flowering, heights, leaf density, tiller number per were highly interconnected other influencing The pyramiding favorable alleles related holds promise enhancing future development sorghum

Язык: Английский

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Advancing lodging resistance in maize: Integrating genetic, hormonal, and agronomic insights for sustainable crop productivity

Plant Stress, Год журнала: 2025, Номер 15, С. 100777 - 100777

Опубликована: Фев. 22, 2025

Язык: Английский

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Deciphering the regulatory network of lignocellulose biosynthesis in bread wheat through genome-wide association studies

Theoretical and Applied Genetics, Год журнала: 2025, Номер 138(4)

Опубликована: Март 28, 2025

Язык: Английский

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The case for improving crop carbon sink strength or plasticity for a CO2-rich future

Current Opinion in Plant Biology, Год журнала: 2020, Номер 56, С. 259 - 272

Опубликована: Июль 15, 2020

Язык: Английский

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Loss of Gn1a/OsCKX2 confers heavy‐panicle rice with excellent lodging resistance

Journal of Integrative Plant Biology, Год журнала: 2021, Номер 64(1), С. 23 - 38

Опубликована: Ноя. 16, 2021

Significant achievements have been made in breeding programs for the heavy-panicle-type (HPT) rice (Oryza sativa) Southwest China. The HPT varieties now exhibit excellent lodging resistance, allowing them to overcome greater pressures caused by heavy panicles. However, genetic mechanism of this resistance remains elusive. Here, we isolated a major quantitative trait locus, Panicle Neck Diameter 1 (PND1), and identified causal gene as GRAIN NUMBER 1A/CYTOKININ OXIDASE 2 (Gn1A/OsCKX2). null gn1a allele from line R498 (gn1aR498 ) improved through increasing culm diameter promoting crown root development. Loss-of-function Gn1a/OsCKX2 led cytokinin accumulation tip accelerated development adventitious roots. Gene pyramiding between gn1aR498 with two gain-of-function alleles, STRONG CULM (SCM2) SCM3, further resistance. Moreover, had minimal influence on overall quality. Our research thus highlights distinct components provides strategy tailor-made crop improvement both yield rice.

Язык: Английский

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Improving rice grain yield and reducing lodging risk simultaneously: A meta-analysis

European Journal of Agronomy, Год журнала: 2022, Номер 143, С. 126709 - 126709

Опубликована: Ноя. 30, 2022

Язык: Английский

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