Morphological and Physiological Response of Helianthus annuus L. to Drought Stress and Correlation of Wax Contents for Drought Tolerance Traits

Ahmad, Hafiz Aziz; Wang, Xiukang; Mahmood-ur-Rahman,; Fiaz, Sajid; Azeem, Farrukh; Shaheen, Tayyaba

doi:10.1007/s13369-021-06098-1

Cited by 18 publications

(12 citation statements)

References 113 publications

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“…Biosynthesis of epicuticular waxes under stress conditions is mediated by Eceriferum (CER) s, an important gene family that plays key role in elongation of fatty acids chains ( Ahmad et al., 2022 ). This gene was reported to be highly induced in Otis leaves in response to drought imposed during vegetative stage ( Harb et al., 2020 ).…”

Section: Discussionmentioning

confidence: 99%

Heat and drought induced transcriptomic changes in barley varieties with contrasting stress response phenotypes

Mahalingam¹,

Duhan

Kaundal

et al. 2022

Front. Plant Sci.

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Drought and heat stress substantially impact plant growth and productivity. When subjected to drought or heat stress, plants exhibit reduction in growth resulting in yield losses. The occurrence of these two stresses together intensifies their negative effects. Unraveling the molecular changes in response to combined abiotic stress is essential to breed climate-resilient crops. In this study, transcriptome profiles were compared between stress-tolerant (Otis), and stress-sensitive (Golden Promise) barley genotypes subjected to drought, heat, and combined heat and drought stress for five days during heading stage. The major differences that emerged from the transcriptome analysis were the overall number of differentially expressed genes was relatively higher in Golden Promise (GP) compared to Otis. The differential expression of more than 900 transcription factors in GP and Otis may aid this transcriptional reprogramming in response to abiotic stress. Secondly, combined heat and water deficit stress results in a unique and massive transcriptomic response that cannot be predicted from individual stress responses. Enrichment analyses of gene ontology terms revealed unique and stress type-specific adjustments of gene expression. Weighted Gene Co-expression Network Analysis identified genes associated with RNA metabolism and Hsp70 chaperone components as hub genes that can be useful for engineering tolerance to multiple abiotic stresses. Comparison of the transcriptomes of unstressed Otis and GP plants identified several genes associated with biosynthesis of antioxidants and osmolytes were higher in the former that maybe providing innate tolerance capabilities to effectively combat hostile conditions. Lines with different repertoire of innate tolerance mechanisms can be effectively leveraged in breeding programs for developing climate-resilient barley varieties with superior end-use traits.

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Section: Discussionmentioning

confidence: 99%

Heat and drought induced transcriptomic changes in barley varieties with contrasting stress response phenotypes

Mahalingam¹,

Duhan

Kaundal

et al. 2022

Front. Plant Sci.

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“…Plants show a variety of morphological, physiological, and biochemical responses to drought stress and use different adaptive mechanisms, including wax accumulation 17 , 22 , 48 According to Xue et al 27 , a comprehensive study is of high importance, especially the physiological and agronomical interrelationships between the attributes of cuticular wax (structure and chemical composition) and drought stress. The subject of our research was studying GL and N-GL plants constituting pairs of NILs, characterised by different wax ultrastructure on above-ground organs, i.e.…”

Section: Discussionmentioning

confidence: 99%

Variation between glaucous and non-glaucous near-isogenic lines of rye (Secale cereale L.) under drought stress

Laskoś

Myśków

Dziurka

et al. 2022

Sci Rep

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Glaucous (811, L35, and RXL10) and non-glaucous (811bw, L35bw, and RXL10bw) near-isogenic lines (NILs) of rye (Secale cereale L.) forming three pairs of inbred lines were the subject of the research. The research aimed to study the relationship between wax cover attributes and the physio-biochemical drought reactions and yield of rye NILs and to uncover the differences in drought resistance levels of these lines. The greatest differences between glaucous and non-glaucous NILs were observed in the RXL10/RXL10bw pair. Of particular note were the stable grain number and the thousand grain weight of the non-glaucous line RXL10bw under drought and the accompanying reactions, such as an approximately 60% increase in MDA and a two-fold increase in wax amount, both of which were significantly higher than in the glaucous line RXL10 and in other NILs. The surprisingly high level of MDA in the RXL10bw line requires further analysis. Moreover, additional wax crystal aggregates were found under drought conditions on the abaxial leaf surface of the glaucous lines 811 and RXL10. The use of rye NILs indicated that line-specific drought resistance could be associated with wax biosynthetic pathways involved in physiological and biochemical responses important for increased drought resistance.

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“…Physiological, molecular and transcription levels of drought tolerance were well characterized in crop plants [ 3 , 122 ]; however, miRNA mediation has not yet been properly explained [ 11 ]. In addition to plant development, miRNAs also regulate abiotic stress-responsive genes in plant species [ 123 ].…”

Section: Drought Stress Regulation By Mirnas In Diverse Crop Speciesmentioning

confidence: 99%

“…Abiotic stresses are common problems of every ecosystem and rely on various environmental factors [ 1 , 2 ]. Drought is among the most hazardous stresses among all other abiotic stresses that affect crop plants throughout the world [ 3 , 4 ]. A recent study has revealed that the total yield loss triggered by drought is approximately 7% worldwide [ 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

Molecular Aspects of MicroRNAs and Phytohormonal Signaling in Response to Drought Stress: A Review

Ahmad

Wang

Ijaz

et al. 2022

CIMB

Self Cite

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Phytohormones play an essential role in plant growth and development in response to environmental stresses. However, plant hormones require a complex signaling network combined with other signaling pathways to perform their proper functions. Thus, multiple phytohormonal signaling pathways are a prerequisite for understanding plant defense mechanism against stressful conditions. MicroRNAs (miRNAs) are master regulators of eukaryotic gene expression and are also influenced by a wide range of plant development events by suppressing their target genes. In recent decades, the mechanisms of phytohormone biosynthesis, signaling, pathways of miRNA biosynthesis and regulation were profoundly characterized. Recent findings have shown that miRNAs and plant hormones are integrated with the regulation of environmental stress. miRNAs target several components of phytohormone pathways, and plant hormones also regulate the expression of miRNAs or their target genes inversely. In this article, recent developments related to molecular linkages between miRNAs and phytohormones were reviewed, focusing on drought stress.

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Morphological and Physiological Response of Helianthus annuus L. to Drought Stress and Correlation of Wax Contents for Drought Tolerance Traits

Cited by 18 publications

References 113 publications

Heat and drought induced transcriptomic changes in barley varieties with contrasting stress response phenotypes

Heat and drought induced transcriptomic changes in barley varieties with contrasting stress response phenotypes

Variation between glaucous and non-glaucous near-isogenic lines of rye (Secale cereale L.) under drought stress

Molecular Aspects of MicroRNAs and Phytohormonal Signaling in Response to Drought Stress: A Review

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