Drought and salt stress effects on biochemical changes and gene expression of photosystem II and catalase genes in selected onion cultivars

Chaudhry, Usman Khalid; Gökçe, Zahide Neslihan Öztürk; Gökçe, Ali Fuat

doi:10.1007/s11756-021-00827-5

Cited by 28 publications

(17 citation statements)

References 59 publications

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“…Several studies have reported the higher accumulation of ROS is a response to stress leading to cellular damages [7]. Additionally, it was also observed that higher production ROS due to salt stress caused decreased crop production.…”

Section: Salt Induced Oxidative Stressmentioning

confidence: 97%

“…It has been reported that NaCl inhibited the photochemical efficiency of PSII. It is sensitive to Na+ toxicity and directly reduces the photosynthesis process of the plant [7]. Osmotic stress is regarded as the deficiency of water in plant tissues due to excessive accumulation of salts.…”

Section: Salt Stress and Physiological Processesmentioning

confidence: 99%

“…Salt stress also disrupts the physiological functioning of the plants, such as the closure of stomata, reduction in gaseous exchange, damage to photosynthetic machinery, decrease in chlorophyll contents, and distortion of PSII system [6,7]. Salt stress also disrupts the biochemical functioning of the plants with the excessive production of reactive oxygen species (ROS) resulting in oxidative stress [8].…”

Section: Introductionmentioning

confidence: 99%

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Salt Stress and Plant Molecular Responses

Chaudhry¹,

Gökçe²,

Gökçe³

2022

Plant Defense Mechanisms

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Plants being sessile suffer from several abiotic stresses during growth. These include drought, salinity, heavy metal, temperature, and nutrient stress. Salt stress is one of the devastating abiotic stresses that plant suffers under natural growth conditions. It is more common in arid regions due to excessive evaporation, which causes the accumulation of inorganic salts disrupting the plant metabolism. It also triggers the influence of drought stress, as plants are unable to absorb water. Additionally, it also causes oxidative stress in plant tissues. Thereby, plant adaptation to salt stress, rely on signals and pathways that help plant in establishing cellular ionic and osmotic homeostasis. Stress-responsive transcription factors play crucial roles in the regulation of gene expression in responses to salt stress. Moreover, genome editing has gained much attention for the engineering of traits for the better adaptation of plants to salt stress. This chapter elucidated the plant\'s physio-biochemical responses and molecular mechanisms to salt stress.

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Section: Salt Induced Oxidative Stressmentioning

confidence: 97%

Section: Salt Stress and Physiological Processesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Salt Stress and Plant Molecular Responses

Chaudhry¹,

Gökçe²,

Gökçe³

2022

Plant Defense Mechanisms

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“…For fibre, fuel, and food, we usually depend on major crops such as cotton, maize, sugarcane, rice, barley, wheat, and soybean. An increase in world population day by day puts tremendous pressure on current food crop production systems ( Chaudhry et al, 2021a ; Junaid et al, 2021 ). Additionally, climate change results in several weather adversaries, and frequent disease and pest attacks threaten crop production worldwide ( Raza et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

Moving Beyond DNA Sequence to Improve Plant Stress Responses

Saeed

Chaudhry²,

Bakhsh³

et al. 2022

Front. Genet.

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Plants offer a habitat for a range of interactions to occur among different stress factors. Epigenetics has become the most promising functional genomics tool, with huge potential for improving plant adaptation to biotic and abiotic stresses. Advances in plant molecular biology have dramatically changed our understanding of the molecular mechanisms that control these interactions, and plant epigenetics has attracted great interest in this context. Accumulating literature substantiates the crucial role of epigenetics in the diversity of plant responses that can be harnessed to accelerate the progress of crop improvement. However, harnessing epigenetics to its full potential will require a thorough understanding of the epigenetic modifications and assessing the functional relevance of these variants. The modern technologies of profiling and engineering plants at genome-wide scale provide new horizons to elucidate how epigenetic modifications occur in plants in response to stress conditions. This review summarizes recent progress on understanding the epigenetic regulation of plant stress responses, methods to detect genome-wide epigenetic modifications, and disentangling their contributions to plant phenotypes from other sources of variations. Key epigenetic mechanisms underlying stress memory are highlighted. Linking plant response with the patterns of epigenetic variations would help devise breeding strategies for improving crop performance under stressed scenarios.

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“…Salinity is a limiting factor in rice production, particularly in Southeast Asia, where many regions have experienced decreasing rice yields due to increased soil salinity ( Pattanagul and Thitisaksakul, 2008 ). To solve this problem, it is important to understand the molecular underpinnings of salt tolerance, which is controlled by multiple genes and involves several mechanisms [for reviews: ( Chen et al, 2021a ; Liu et al, 2021 ; Ponce et al, 2021 )], including osmotic adjustment ( Sripinyowanich et al, 2013 ; Nounjan et al, 2018 ) for review: ( Rajasheker et al, 2019 ), ion homeostasis [for review: ( Hussain et al, 2021 )], reactive oxygen species (ROS) scavenging ( Chutimanukul et al, 2019 ; Parveen et al, 2021 ), membrane repairs and photosynthesis adaptation ( Udomchalothorn et al, 2017 ; Chutimanukul et al, 2018 ; Lekklar et al, 2019 ; Chaudhry et al, 2021 ). These mechanisms are regulated through various sensors and signaling cascades, including the calmodulin signaling pathway ( Yuenyong et al, 2018 ) with interaction with abscisic acid signaling ( Saeng-ngam et al, 2012 ) and protein kinase cascade [for review: ( Chen et al, 2021a )].…”

Section: Introductionmentioning

confidence: 99%

Identification of Key Genes in ‘Luang Pratahn’, Thai Salt-Tolerant Rice, Based on Time-Course Data and Weighted Co-expression Networks

et al. 2021

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Salinity is an important environmental factor causing a negative effect on rice production. To prevent salinity effects on rice yields, genetic diversity concerning salt tolerance must be evaluated. In this study, we investigated the salinity responses of rice (Oryza sativa) to determine the critical genes. The transcriptomes of ‘Luang Pratahn’ rice, a local Thai rice variety with high salt tolerance, were used as a model for analyzing and identifying the key genes responsible for salt-stress tolerance. Based on 3' Tag-Seq data from the time course of salt-stress treatment, weighted gene co-expression network analysis was used to identify key genes in gene modules. We obtained 1,386 significantly differentially expressed genes in eight modules. Among them, six modules indicated a significant correlation within 6, 12, or 48h after salt stress. Functional and pathway enrichment analysis was performed on the co-expressed genes of interesting modules to reveal which genes were mainly enriched within important functions for salt-stress responses. To identify the key genes in salt-stress responses, we considered the two-state co-expression networks, normal growth conditions, and salt stress to investigate which genes were less important in a normal situation but gained more impact under stress. We identified key genes for the response to biotic and abiotic stimuli and tolerance to salt stress. Thus, these novel genes may play important roles in salinity tolerance and serve as potential biomarkers to improve salt tolerance cultivars.

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Drought and salt stress effects on biochemical changes and gene expression of photosystem II and catalase genes in selected onion cultivars

Cited by 28 publications

References 59 publications

Salt Stress and Plant Molecular Responses

Salt Stress and Plant Molecular Responses

Moving Beyond DNA Sequence to Improve Plant Stress Responses

Identification of Key Genes in ‘Luang Pratahn’, Thai Salt-Tolerant Rice, Based on Time-Course Data and Weighted Co-expression Networks

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