Adaptive physiological and biochemical response of sugarcane genotypes to high-temperature stress

Kohila, S.; Gomathi, R.

doi:10.1007/s40502-018-0363-y

Cited by 28 publications

(11 citation statements)

References 54 publications

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“…In the present investigation, heat stress obviously induced a marked accumulation of proline compared to the control (Table 3). Such obtained results are concomitant with those reported by [95] on rice and [96] on sugar cane. The accumulation of proline under heat stress could also serve as chaperones, stabilizing and protecting the structure of enzymes and proteins, maintaining membrane integrity and scavenging ROS, and as nitrogen and carbon pools [96,97].…”

Section: Discussionsupporting

confidence: 91%

“…Such obtained results are concomitant with those reported by [95] on rice and [96] on sugar cane. The accumulation of proline under heat stress could also serve as chaperones, stabilizing and protecting the structure of enzymes and proteins, maintaining membrane integrity and scavenging ROS, and as nitrogen and carbon pools [96,97]. Pretreatment of wheat with K 2 SiO 3 and SiO 2 NPs alleviated the adverse effects of heat stress via increasing photosynthetic pigments and organic solutes, including soluble sugars, sucrose, and proline content (Table 3).…”

Section: Discussionsupporting

confidence: 91%

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Roles of Si and SiNPs in Improving Thermotolerance of Wheat Photosynthetic Machinery via Upregulation of PsbH, PsbB and PsbD Genes Encoding PSII Core Proteins

et al. 2021

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Photosystem II is extremely susceptible to environmental alterations, particularly high temperatures. The maintenance of an efficient photosynthetic system under stress conditions is one of the main issues for plants to attain their required energy. Nowadays, searching for stress alleviators is the main goal for maintaining photosynthetic system productivity and, thereby, crop yield under global climate change. Potassium silicate (K2SiO3, 1.5 mM) and silicon dioxide nanoparticles (SiO2NPs, 1.66 mM) were used to mitigate the negative impacts of heat stress (45 °C, 5 h) on wheat (Triticum aestivum L.) cv. (Shandawelly) seedlings. The results showed that K2SiO3 and SiO2NPs diminished leaf rolling symptoms and electrolyte leakage (EL) of heat-stressed wheat leaves. Furthermore, the maximum quantum yield of photosystem II (Fv/Fm) and the performance index (PIabs), as well as the photosynthetic pigments and organic solutes including soluble sugars, sucrose, and proline accumulation, were increased in K2SiO3 and SiO2NPs stressed leaves. At the molecular level, RT-PCR analysis showed that K2SiO3 and SiO2NPs treatments stimulated the overexpression of PsbH, PsbB, and PsbD genes. Notably, this investigation indicated that K2SiO3 was more effective in improving wheat thermotolerance compared to SiO2NPs. The application of K2SiO3 and SiO2NPs may be one of the proposed approaches to improve crop growth and productivity to tolerate climatic change.

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Section: Discussionsupporting

confidence: 91%

Section: Discussionsupporting

confidence: 91%

Roles of Si and SiNPs in Improving Thermotolerance of Wheat Photosynthetic Machinery via Upregulation of PsbH, PsbB and PsbD Genes Encoding PSII Core Proteins

et al. 2021

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“…In our previous studies on oxidative [ 16 ], heat [ 18 ] and drought stresses [ 19 ], higher CF were observed in the wild species than that in the cultivated sugarcane under oxidative stress. The prolinecontent was 69 and 16.6% higher in S.Spontaneum and Erianthus sp., respectively, compared with those in their respective controls.…”

Section: Discussionmentioning

confidence: 99%

Comparative physiological and transcriptome analysis in cultivated and wild sugarcane species in response to hydrogen peroxide-induced oxidative stress

et al. 2023

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Background Sugarcane is an important energy crop grown worldwide,supplementing various renewable energy sources. Cultivated and wild sugarcane species respond differently to biotic and abiotic stresses. Generally, wild species are tolerant to various abiotic stresses. In the present study, the physiological and molecular responses of cultivated and wild sugarcane species to oxidative stress at the transcriptional levels were compared. Transcriptional responses were determined using RNAseq. The representative RNA-seq transcript values were validated by reverse transcriptase quantitative polymerase chain reaction (RT-qPCR) and confirmed through physiological responses. Results Oxidative stress causes leaf-rolling and -tip drying in cultivated sugarcane, but the wild species are tolerant. Higher chlorophyll fluorescence was observed in the wild species than that in the cultivated varieties under stress. Wild species can maintain a higher chlorophyll stability index than the cultivated species, which was confirmed by the lower transcripts of the chlorophyllase gene in the wild species than that in the cultivated variety. Transcription factor genes (NAC, MYB, and WRKY) were markedly expressed in response to oxidative stress, revealing their involvement in stress tolerance. The analysis revealed synchronized expression of acetyl-transferase, histone2A, cellulose synthase, and secondary cell wall biosynthetic genes in the wild species. The validation of selected genes and 15 NAC transcription factors using RT-qPCR revealed that their expression profiles were strongly correlated with RNA-seq. To the best of our knowledge, this is the first report on the oxidative stress response in cultivated and wild sugarcane species. Conclusion Physiological and biochemical changes in response to oxidative stress markedly differ between cultivated and wild sugarcane species. The differentially expressed stress-responsive genes are grouped intothe response to oxidative stress, heme-binding, peroxidase activity, and metal ion binding categories. Chlorophyll maintenance is a stress tolerance response enhanced by the differential regulation of the chlorophyllase gene.There is a considerable difference in the chlorophyll stability index between wild and cultivated varieties. We observed a substantial regulation of secondary wall biosynthesis genes in the wild species compared with that in the cultivated variety, suggesting differences in stress tolerance mechanisms.

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“…The amount of photosynthetic pigments is decreased by heat shock. Heat tolerance is directly correlated with plant's capacity to sustain the rates of CO2 uptake and leaf gas exchange under heat stress (Kohila and Gomathi, 2018). Further, heat stress significantly affects leaf water efficiency, stomatal conductance, and intercellular CO2 concentration.…”

Section: Photosynthesismentioning

confidence: 99%

Zinc Oxide Nanoparticles in Alleviation of Toxicity Induced by Heat Stress in Plants

Babita¹,

-²,

-³

et al. 2023

IJFMR

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Climate change-related abiotic pressures have an impact on plant development and yield, which decreases the amount of food produced. High temperature (HT) stress has a large worldwide impact on plant development, metabolism, and productivity. The growth and development of plants involves numerous temperature-sensitive metabolic processes. The widespread practices of producing crops in polluted surroundings is currently environmentalists' top worry. So, in order to maintain high crop yields under HT stress, which is currently a key worry for crop production, it is vital for agriculture to develop various strategies. A current relevant technology for enhancing food production and ensuring sustainability in the pursuit of food safety is highly developed nanotechnology. Nanotechnology boosts agricultural productivity by improving input effectiveness and reducing relevant losses. This review looks at earlier studies that show how zinc oxide nanoparticles (ZnO-NPs) can mitigate the negative effects of heat stress. ZnO-NPs application is the most effective method available globally to greatly boost agricultural output in challenging settings. With the aid of a number of cutting-edge technologies for reversing the symptoms of oxidative stress brought on by heat stress, ZnO-NPs can revolutionize the agricultural and food industries. The impact of ZnO-NPs on the physiological, antioxidative and biochemical activities in different plants has also been thoroughly studied. This review summarizes the current understanding and future perspectives of plant-ZnO-NPs research.

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Adaptive physiological and biochemical response of sugarcane genotypes to high-temperature stress

Cited by 28 publications

References 54 publications

Roles of Si and SiNPs in Improving Thermotolerance of Wheat Photosynthetic Machinery via Upregulation of PsbH, PsbB and PsbD Genes Encoding PSII Core Proteins

Roles of Si and SiNPs in Improving Thermotolerance of Wheat Photosynthetic Machinery via Upregulation of PsbH, PsbB and PsbD Genes Encoding PSII Core Proteins

Comparative physiological and transcriptome analysis in cultivated and wild sugarcane species in response to hydrogen peroxide-induced oxidative stress

Zinc Oxide Nanoparticles in Alleviation of Toxicity Induced by Heat Stress in Plants

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