Nitrogen Modulates the Ozone Response of Mediterranean Wheat: Considerations for Ozone Risk Assessment DOI

Melissa Carolina Chang Espino,

Ignacio Gónzalez-Fernández,

Samuel Prieto Benitez

et al.

Published: Jan. 1, 2024

The assay was conducted in an Open Top Chamber facility located the Mediterranean basin to investigate how nitrogen (N) fertilization affects response of wheat ozone (O3) exposure. study considered Artur Nick, a modern cultivar commonly used area, three O3 exposure levels (ambient and elevated ambient, +20 +40 nL L-1 O3), two doses (100 200 kg ha-1). Measurements included photosynthetic transpirative gas exchange, leaf chlorophyll content, grain N plant growth yield parameters. Ozone x interactive effects were studied quantified based on accumulated concentrations above 40 threshold (AOT40) phytotoxic dose (POD) indexes, which are O3-risk assessments, from critical (CL) for 5% effect derived.Results revealed that impacts parameters analysed stronger under highest dose. In consequence, CL where as much 3-4 times lower high-N compared low-N treatment. Interestingly, limited fertilizer stimulus, strongly reducing use efficiency agronomic protein yield. Another important aspect 71% POD before anthesis, stressing potential importance during vegetative phase conditions, is usually less than post-anthesis exposure.In conclusion, this suggests need consider crop management derivation CL, due its dose-response relationships including currently not risk assessment exercises framework negotiations air pollution abatement policies.

Language: Английский

Phytohormonal Regulation of Abiotic Stress Tolerance, Leaf Senescence and Yield Response in Field Crops: A Comprehensive Review DOI Creative Commons
Anna Panozzo,

Pranay Kumar Bolla,

Giuseppe Barion

et al.

BioTech, Journal Year: 2025, Volume and Issue: 14(1), P. 14 - 14

Published: Feb. 27, 2025

Field crops are expected to be increasingly threatened by climate change, which will negatively impact plant development, growth and yield. Phytohormones play a crucial role in regulating specific signalling pathways induce rapid adaptive responses environmental stresses. Exogenous phytohormone application alters hormonal balance, thereby enhancing adaptation adverse conditions. While several studies have advanced our understanding of the use phytohormones field crops, yield species-specific strategies remain inconsistent rarely assessed under The cytokinins (CKs), abscisic acid (ABA), gibberellic (GA) has been shown maintain prolonged photosynthetic activity, stabilize plasma membrane, reduce lipid peroxidation ion accumulation salinity stress wheat. Additionally, inhibitors ethylene synthesis receptors can mitigate symptoms drought heat stress, typically accelerates senescence shortens grain-filling period cereal crops. In this way, exogenous CKs, GA, delay sustaining leaf activity postponing nutrient remobilization. However, these benefits may not consistently translate into improvements grain quality. This review explores molecular mechanisms abiotic tolerance, delineates their functions evaluates experimental findings from applications. It also summarizes potential applications emphasizing need for investigations on timing dosages open-field conditions optimize agronomic potential.

Language: Английский

Citations

1
Effect of sowing date on radiation and temperature use efficiencies of rice in the low-light region of China DOI

Xiaofan Huang,

Fei Deng, Chi Zhang

et al.

Field Crops Research, Journal Year: 2024, Volume and Issue: 309, P. 109329 - 109329

Published: March 5, 2024

Language: Английский

Citations

6
Abscisic Acid Enhances Trehalose Content via OsTPP3 to Improve Salt Tolerance in Rice Seedlings DOI Creative Commons
Nenghui Ye, Yuxing Wang, Huihui Yu

et al.

Plants, Journal Year: 2023, Volume and Issue: 12(14), P. 2665 - 2665

Published: July 17, 2023

Salt stress is one of the major environmental stresses that imposes constraints to plant growth and production. Abscisic acid (ABA) has been well-proven function as a central integrator in under salt stress, trehalose (Tre) emerged an excellent osmolyte induce tolerance. However, interacting mechanism between ABA Tre rice seedlings still obscure. Here, we found application exogenous significantly promoted tolerance by enhancing activities antioxidant enzymes. In addition, expression OsNCED3 was induced stress. The overexpression gene enhanced tolerance, while knockout reduced seedlings. Metabolite analysis revealed content increased OsNCED3-overexpressing nced3 mutant. both improved mutant when compared with WT seedling. OsTPP3 be treatments. Consistent gene, also higher OsTPP3-overexpressing seedling lower tpp3 than plant. Overall, our results demonstrate salt-increased activated OsTPP3, which resulted elevated thus improvement

Language: Английский

Citations

10
Optimizing sowing date to enhance grain yield and quality formation of colored rice in tropical regions of China DOI

Shaokun Song,

Rui Yue,

Long Chen

et al.

Field Crops Research, Journal Year: 2025, Volume and Issue: 322, P. 109760 - 109760

Published: Jan. 17, 2025

Language: Английский

Citations

0
Genome‐wide association study identifies QTL and candidate genes for grain size and weight in a Triticum turgidum collection DOI Creative Commons
Giacomo Mangini, Domenica Nigro, Pasquale Luca Curci

et al.

The Plant Genome, Journal Year: 2025, Volume and Issue: 18(1)

Published: Jan. 27, 2025

Abstract Wheat breeders are constantly looking for genes and alleles that increase grain yield. One key strategy is finding new genetic resources in the wild domesticated gene pools of related species with affecting size. This study explored a natural population Triticum turgidum (L.) phenotyped weight size‐related traits three field trials genotyped single nucleotide polymorphism markers spread across entire genome. The genome‐wide association analysis identified 39 quantitative trait loci (QTL) 1000‐kernel weight, length, width, area, aspect consistent at least two environments. Interestingly, 23 QTL grain‐related were grouped nine clusters located on chromosomes 1A, 1B, 2B, 3B, 4B, 5A, 6B, respectively. Moreover, most these support findings from previous analyses further strengthened by known functions (such as BG2 , GS5 SRS3 ) their similarity to other cereal species. harbored participate various metabolic processes potentially involved seed development, phytohormone signaling, sugar transport, mitogen‐activated protein kinases transcriptional factors MADS‐box WRKY). Identifying controlling will provide information available improve yield, well opportunity develop close be used marker‐assisted selection programs.

Language: Английский

Citations

0
Agro-Physiological and Morphological Responses of Pearl Millet to Varying Water Regimes in Semi-Arid Conditions of Namibia DOI Creative Commons
Ofentse Moseki,

Grace Nandesora Kangueehi,

Vasco Chiteculo

et al.

Agronomy, Journal Year: 2025, Volume and Issue: 15(2), P. 381 - 381

Published: Jan. 31, 2025

Pearl millet (Pennisetum glaucum (L.) R. BR.) is a C4 plant adapted to semi-arid climates and one of the primary staple foods in Sub-Saharan Africa, including Namibia. The decline yields associated with water scarcity over years has been national concern country. An experimental field trial was conducted at Mannheim Crop Research Station, Namibia, during 2023 2024 cropping seasons investigate response two local pearl cultivars (Kangara Okashana 2) different regimes (100%, 75%, 50% crop evapotranspiration [ETc]) according morpho-physiological yield parameters. planted split-plot factorial design four rows per plot under three regimes, genotypes were subplots. results revealed that regime had significant effect on height, number leaves, tillers, chlorophyll content, stomatal conductance, leaf temperature, stem thickness, productive panicle diameter, length, dry weight, biomass, grain 1000-seed weight (p < 0.001). At ETc, significantly reduced growth parameters compared 75% ETc 100% highlighting significance development growth. findings highlighted both responded similarly stress. Seventy-five percent recommended be applied systems conditions. This research implications for planning producing water-limited environments changing climatic

Language: Английский

Citations

0
Impact of milling process on the composition and flow characteristics of intermediate wheatgrass (Thinopyrum intermedium) whole grain flours DOI

Jared Rivera,

Katie Adams, P. V. Vara Prasad

et al.

Journal of Food Measurement & Characterization, Journal Year: 2025, Volume and Issue: unknown

Published: April 9, 2025

Language: Английский

Citations

0
Mechanisms of flavonoids in quinoa’s response to flooding stress in grain filling stage DOI Creative Commons

Guofei Jiang,

Xuqin Wang,

Qingwen Jiang

et al.

Frontiers in Plant Science, Journal Year: 2025, Volume and Issue: 16

Published: May 21, 2025

Quinoa is a new crop with high nutritional value. Flooding stress plays an important role in constraining the growth and development of quinoa during filling stage, flavonoids have been shown to roles abiotic plant stress; however, mechanisms by which respond flooding stage are not clear. Therefore, we used Dian quinoa-1844 as material employed transcriptomics, metabolomics bioinformatics techniques study leaves under stage. The results showed that 433 flavonoid metabolites were detected metabolome. Genes related transcriptome significantly enriched both GO KEGG. Integrated transcriptomic metabolomic analyses revealed 18 30 genes exhibiting significant alterations treatment. These regulate accumulation modulating activity enzymes such F3H, CHI, CHS, thereby enhancing quinoa’s resistance stress. Network interaction analysis identified 5 core transcription factors, 2 structural genes, 4 key metabolites. components synergistically biosynthesis alleviate oxidative damage caused flooding. This elucidated response stress, providing theoretical basis for selecting breeding varieties tolerance.

Language: Английский

Citations

0
Genome-Wide Association Analysis Reveals the Gene Loci of Yield Traits under Drought Stress at the Rice Reproductive Stage DOI Creative Commons
Nansheng Wang, Zhiyuan Gao,

Wanyang Zhang

et al.

Agronomy, Journal Year: 2023, Volume and Issue: 13(8), P. 2096 - 2096

Published: Aug. 10, 2023

Drought is an important factor limiting the growth and development of rice thereby seriously affects yield. The problem may be effectively solved by dissecting drought-resistance mechanism rice, creating excellent drought-resistant germplasm, mining new genes. In this study, 305 accessions (189 Xian, 104 Geng, 5 Aus, 7 Basmati) were used to identify drought-related phenotypes such as grain yield per plant (GYP), number panicle (GNP), (PNP), height (PH) under two-year drought stress. 2017 GYP 2018 GNP Xian max, GYP, GNP, PNP, PH Basmati only was Geng max. population genetic diversity structure analyzed combining 404,388 single nucleotide polymorphism (SNP) markers distributed on 12 chromosomes. A total 42 QTLs with significant correlations identified, among which 10 adjacent loci reported associated resistance. Four candidate genes, LOC_Os03g48890, LOC_Os04g35114, LOC_Os11g45924, LOC_Os06g38950, identified functional annotation haplotype analysis. R2 qGYP3.1 11.53%, qGNP4.2 12.09%, qPNP11.1 10.01%, qPH6.1 13.06%. results have theoretical significance practical application value for improvement resistance in rice.

Language: Английский

Citations

9
Changes in free amino acid and protein polymerization in wheat caryopsis and endosperm during filling after shading DOI Creative Commons
Hongliang Ma, Yongheng Yang,

Dongming Wu

et al.

Frontiers in Plant Science, Journal Year: 2024, Volume and Issue: 15

Published: Feb. 15, 2024

Over the past several decades, a decreasing trend in solar radiation has been observed during wheat growing season. The effects of shade stress on grain yield formation have extensively studied. However, little information stress’s protein warrants further investigation. Two cultivars were grown under three treatments, no as control group (CK), shading from joint to anthesis stage (S1), and mature (S2), investigate free amino acids caryopsis endosperm accumulation filling. dry mass was significantly decreased stress, whereas Glu, Ser, Ala, Asp relative content increased increases total S1 S2 attributed SDS-isoluble SDS-soluble extracts, respectively. improved polymer formation, but delayed conversion albumins globulins into monomeric polymeric proteins. Moreover, proportion SDS-unextractable protein, which represented an increase degree polymerization. polymerization interrelations between components provided novel insights quality stress.

Language: Английский

Citations

3