Stress adaptive plasticity from Aegilops tauschii introgression lines improves drought and heat stress tolerance in bread wheat (Triticum aestivum L.)

PeerJ, Journal Year: 2024, Volume and Issue: 12, P. e17528 - e17528

Published: June 11, 2024

Aegilops tauchii is a D-genome donor of hexaploid wheat and potential source genes for various biotic abiotic stresses including heat drought. In the present study, we used multi-stage evaluation technique to understand effects drought on Ae. tauschii derived introgression lines (ILs). Preliminary (during stage-I) 369 ILs agronomic traits identified 59 agronomically superior ILs. second stage (stage-II), selected ( i.e. , ILs) were evaluated seedling (at 30 °C 35 °C) 20% poly-ethylene glycol; PEG) stress tolerance under growth chambers (stage-II). Heat significantly reduced vigour by 59.29 60.37 percent, respectively. Genotype × treatment interaction analysis index (STI) IL-50, IL-56, IL-68 as high-performing IL-42 IL-44 stress. It also revealed IL-50 stable stresses. Furthermore, in third (stage-III), field condition over two cropping seasons (viz., 2020–21 2021–22), which grain yield 72.79 48.70 Stability was performed identify IL-47, IL-51, IL-259 most stage-III. Tolerant with specific wider adaptability this study can serve resources genetic basis they be utilized developing high-yielding cultivars enhanced tolerance.

Language: Английский

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Biofortification of Triticum species: a stepping stone to combat malnutrition

BMC Plant Biology, Journal Year: 2024, Volume and Issue: 24(1)

Published: July 15, 2024

Biofortification represents a promising and sustainable strategy for mitigating global nutrient deficiencies. However, its successful implementation poses significant challenges. Among staple crops, wheat emerges as prime candidate to address these nutritional gaps. Wheat biofortification offers robust approach enhance cultivars by elevating the micronutrient levels in grains, addressing one of most crucial concerns present era.

Language: Английский

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Consensus genomic regions associated with grain protein content in hexaploid and tetraploid wheat

Frontiers in Genetics, Journal Year: 2022, Volume and Issue: 13

Published: Sept. 28, 2022

A meta-analysis of QTLs associated with grain protein content (GPC) was conducted in hexaploid and tetraploid wheat to identify robust stable meta-QTLs (MQTLs). For this purpose, as many 459 GPC-related retrieved from 48 linkage-based QTL mapping studies were projected onto the newly developed consensus map. The analysis resulted prediction 57 MQTLs 7 hotspots located on all chromosomes (except 1D 4D) average confidence interval reduced 2.71-fold compared initial QTLs. physical regions occupied by ranged 140 bp 224.02 Mb an 15.2 Mb, whereas 1.81 36.03 a mean 8.82 Mb. Nineteen two also found be co-localized 45 significant SNPs identified 16 previously published genome-wide association wheat. Candidate gene (CG) investigation within some selected led identification 705 models which included 96 high-confidence CGs showing expressions different grain-related tissues having probable roles GPC regulation. These significantly expressed mainly involved genes/gene families encoding for following proteins: aminotransferases, early nodulin 93, glutamine synthetases, invertase/pectin methylesterase inhibitors, BIG GRAIN 1-like, cytochrome P450, glycosyl transferases, hexokinases, small GTPases, UDP-glucuronosyl/UDP-glucosyltransferases, EamA, SANT/Myb, GNAT, thioredoxin, phytocyanin, homeobox domains containing proteins. Further, eight genes including GPC-B1, Glu-B1-1b, Glu-1By9, TaBiP1, GSr, TaNAC019-A, TaNAC019-D, bZIP-TF SPA already known detected MQTL confirming efficacy predicted during current study.

Language: Английский

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Application of potassium nitrate and salicylic acid improves grain yield and related traits by delaying leaf senescence in Gpc-B1 carrying advanced wheat genotypes

Frontiers in Plant Science, Journal Year: 2023, Volume and Issue: 14

Published: July 17, 2023

Grain protein content (GPC) is an important quality trait that effectively modulates end-use and nutritional characteristics of wheat flour-based food products. The Gpc-B1 gene responsible for the higher in grain. In addition to GPC, also generally associated with reduced grain filling period which eventually causes yield penalty wheat. main aim present study was evaluate effect foliar application potassium nitrate (PN) salicylic acid (SA) on physiological a set twelve genotypes, including nine isogenic lines carrying three elite varieties no gene, grown at experimental area Department Plant Breeding Genetics, PAU, Punjab, India. PN significantly increased number grains per spike (GPS) by 6.42 grains, days maturity (DTM) 1.03 days, 1000-grain weight (TGW) 1.97 g plot (YPP) 0.2 kg/plot. As result spray, flag leaf chlorophyll enhanced 2.35 CCI anthesis stage 1.96 10 after all tested genotypes. Furthermore, nitrogen average 0.52% booting 0.35% both evaluated addition, yellow peduncle colour 30 19.08% while straw improved 0.17% preliminary experiment conducted using SA demonstrated significant increase DTM other component traits. 2.31 GPS approximately 3.17 TGW 1.13g, YPP 0.21 had GPC itself. findings suggests applications can mitigate extending

Language: Английский

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Detection of consensus genomic regions and candidate genes for quality traits in barley using QTL meta-analysis

Frontiers in Plant Science, Journal Year: 2024, Volume and Issue: 14

Published: Jan. 11, 2024

Improving barley grain quality is a major goal in breeding. In this study, total of 35 papers focusing on quantitative trait loci (QTLs) mapping for traits published since 2000 were collected. Among the 454 QTLs identified these studies, 349 them mapped onto high-density consensus maps, which used QTL meta-analysis. Through meta-analysis, initial integrated into 41 meta-QTLs (MQTLs) with an average confidence interval (CI) 1. 66 cM, 88.9% narrower than that QTLs. MQTLs, 25 subsequently validated publications using genome-wide association study (GWAS). From ten breeder’s MQTLs selected. Synteny analysis comparing and wheat revealed orthologous relationships between eight 45 MQTLs. Additionally, 17 homologs associated rice within regions through comparative analysis. The findings provide valuable insights molecular marker-assisted breeding identification candidate genes related to barley.

Language: Английский

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