Overview of Identified Genomic Regions Associated with Various Agronomic and Physiological Traits in Barley under Abiotic Stresses

Fatemi, Farzaneh; Kianersi, Farzad; Pour-Aboughadareh, Alireza; Poczai, Péter; Jadidi, Omid

doi:10.3390/app12105189

Cited by 22 publications

(9 citation statements)

References 180 publications

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“…Water availability is one of the most important parameters in determining global agricultural crop productivity [ 1 ]. Among abiotic stress, drought is known as one of the most important effects-reducing crop productivity worldwide.…”

Section: Introductionmentioning

confidence: 99%

Association Analysis for Some Biochemical Traits in Wild Relatives of Wheat under Drought Stress Conditions

Pour-Aboughadareh

Jadidi

Shooshtari

et al. 2022

Genes

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In the present study, we estimated genetic diversity and population structure in 186 accessions of Triticum and Aegilops species using 24 simple sequence repeat markers (SSR). Furthermore, an association analysis was performed for antioxidant activities, including guaiacol peroxidase (GPX), ascorbate peroxidase (APX), peroxidase (POX), catalase (CAT), and dry matter (DM) under two control and drought stress conditions. Our findings showed that drought treatment significantly decreased DM, whereas activities of all antioxidant enzymes were increased compared to the control conditions. The results of correlation analysis indicated that, under drought stress conditions, all biochemical traits had a positive and significant association with each other and with dry matter. In the molecular section, the results of the analysis of molecular variance (AMOVA) indicated that the molecular variation within species is more than within them. The dendrogram obtained by cluster analysis showed that grouping the investigated accessions was in accordance with their genomic constitutions. The results of association analysis revealed 8 and 9 significant marker–trait associations (MTA) under control and drought stress conditions, respectively. Among identified MTAs, two associations were simultaneously found in both growing conditions. Moreover, several SSR markers were associated with multiple traits across both conditions. In conclusion, our results could provide worthwhile information regarding marker-assisted selection for the activity of antioxidant enzymes in future breeding programs.

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Section: Introductionmentioning

confidence: 99%

Association Analysis for Some Biochemical Traits in Wild Relatives of Wheat under Drought Stress Conditions

Pour-Aboughadareh

Jadidi

Shooshtari

et al. 2022

Genes

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“…The increased demand of barley for food, beer, and feed with concomitant reductions in yields perpetuated by climate change have accelerated research efforts towards understanding the genetic basis of drought associated agronomic traits and their responses in target environments. This approach enabled identification of QTL not only linked with yield, but also, physiological and biochemical responses to water deprivation [ 38 ]. Several abiotic stress tolerance mapping studies in barley have been reported [ 39 , 40 ].…”

Section: Discussionmentioning

confidence: 99%

QTL mapping of shoot and seed traits impacted by Drought in Barley using a recombinant inbred line Population

Ajayi¹,

Bregitzer²,

Klos³

et al. 2023

BMC Plant Biol

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Background With ongoing climate change, drought events are severely limiting barley production worldwide and pose a significant risk to the malting, brewing and food industry. The genetic diversity inherent in the barley germplasm offers an important resource to develop stress resiliency. The purpose of this study was to identify novel, stable, and adaptive Quantitative Trait Loci (QTL), and candidate genes associated with drought tolerance. A recombinant inbred line (RIL) population (n = 192) developed from a cross between the drought tolerant ‘Otis’ barley variety, and susceptible ‘Golden Promise’(GP) was subjected to short-term progressive drought during heading in the biotron. This population was also evaluated under irrigated and rainfed conditions in the field for yields and seed protein content. Results Barley 50k iSelect SNP Array was used to genotype the RIL population to elucidate drought-adaptive QTL. Twenty-three QTL (eleven for seed weight, eight for shoot dry weight and four for protein content) were identified across several barley chromosomes. QTL analysis identified genomic regions on chromosome 2 and 5 H that appear to be stable across both environments and accounted for nearly 60% variation in shoot weight and 17.6% variation in seed protein content. QTL at approximately 29 Mbp on chromosome 2 H and 488 Mbp on chromosome 5 H are in very close proximity to ascorbate peroxidase (APX) and in the coding sequence of the Dirigent (DIR) gene, respectively. Both APX and DIR are well-known key players in abiotic stress tolerance in several plants. In the quest to identify key recombinants with improved tolerance to drought (like Otis) and good malting profiles (like GP), five drought tolerant RILs were selected for malt quality analysis. The selected drought tolerant RILs exhibited one or more traits that were outside the realms of the suggested limits for acceptable commercial malting quality. Conclusions The candidate genes can be used for marker assisted selection and/or genetic manipulation to develop barley cultivars with improved tolerance to drought. RILs with genetic network reshuffling necessary to generate drought tolerance of Otis and favorable malting quality attributes of GP may be realized by screening a larger population.

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“…GWAS examines the entire genome to identify DNA variations related to the trait of interest [ 38 ]. GWAS has been successfully used in deciphering abiotic tolerance in rice [ 39 ], soybean [ 40 ], wheat [ 41 ], maize [ 42 ], sesame [ 43 ], barley [ 44 ], chickpea [ 45 ], rapeseed [ 46 ], cotton [ 47 , 48 , 49 ] and sorghum [ 50 , 51 ]. The primary goal of GWAS is to identify genomic areas linked with agronomic or morphological features or any phenotypes that can be markers, genes or quantitative trait loci (QTL) for gene discovery, introgressive hybridization and MAB [ 52 ] ( Table 1 ).…”

Section: Genomicsmentioning

confidence: 99%

Multi-Omics Pipeline and Omics-Integration Approach to Decipher Plant’s Abiotic Stress Tolerance Responses

Roychowdhury

Das²,

Gupta

et al. 2023

Genes

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The present day’s ongoing global warming and climate change adversely affect plants through imposing environmental (abiotic) stresses and disease pressure. The major abiotic factors such as drought, heat, cold, salinity, etc., hamper a plant’s innate growth and development, resulting in reduced yield and quality, with the possibility of undesired traits. In the 21st century, the advent of high-throughput sequencing tools, state-of-the-art biotechnological techniques and bioinformatic analyzing pipelines led to the easy characterization of plant traits for abiotic stress response and tolerance mechanisms by applying the ‘omics’ toolbox. Panomics pipeline including genomics, transcriptomics, proteomics, metabolomics, epigenomics, proteogenomics, interactomics, ionomics, phenomics, etc., have become very handy nowadays. This is important to produce climate-smart future crops with a proper understanding of the molecular mechanisms of abiotic stress responses by the plant’s genes, transcripts, proteins, epigenome, cellular metabolic circuits and resultant phenotype. Instead of mono-omics, two or more (hence ‘multi-omics’) integrated-omics approaches can decipher the plant’s abiotic stress tolerance response very well. Multi-omics-characterized plants can be used as potent genetic resources to incorporate into the future breeding program. For the practical utility of crop improvement, multi-omics approaches for particular abiotic stress tolerance can be combined with genome-assisted breeding (GAB) by being pyramided with improved crop yield, food quality and associated agronomic traits and can open a new era of omics-assisted breeding. Thus, multi-omics pipelines together are able to decipher molecular processes, biomarkers, targets for genetic engineering, regulatory networks and precision agriculture solutions for a crop’s variable abiotic stress tolerance to ensure food security under changing environmental circumstances.

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Overview of Identified Genomic Regions Associated with Various Agronomic and Physiological Traits in Barley under Abiotic Stresses

Cited by 22 publications

References 180 publications

Association Analysis for Some Biochemical Traits in Wild Relatives of Wheat under Drought Stress Conditions

Association Analysis for Some Biochemical Traits in Wild Relatives of Wheat under Drought Stress Conditions

QTL mapping of shoot and seed traits impacted by Drought in Barley using a recombinant inbred line Population

Multi-Omics Pipeline and Omics-Integration Approach to Decipher Plant’s Abiotic Stress Tolerance Responses

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