Decoding the wheat awn transcriptome and overexpressing TaRca1β in rice for heat stress tolerance

Chaudhary, Chanderkant; Sharma, Naveen; Khurana, Paramjit

doi:10.1007/s11103-020-01073-0

Cited by 18 publications

(7 citation statements)

References 49 publications

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“…Plants have developed various ways to cope with heat stress, including intrinsic heat stress tolerance, which refers to a plant's inherent capacity to withstand heat stress (Song et al 2012). ROS overproduction due to heat stress causes lipid peroxidation, DNA damage, protein oxidation, and cell death (Choudhury et al 2017;Sarwar et al 2018;Chaudhary et al 2021). They increase the functions of the antioxidative system, as the ROS function as signaling molecule that confers plants to acclimate and adapt to abiotic stresses (Gautam et al 2022).…”

Section: Discussionmentioning

confidence: 99%

“…The response of a stress exposed plant is affected by its developmental stage as well as the severity of the stress component (Brestic et al 2012;Yamori et al 2014). The uncontrolled generation of reactive oxygen species (ROS) under heat exposure causes disruption of cellular and membranous integrities, DNA and protein denaturation, lipid peroxidation and eventually cell death (Chaudhary et al 2021). Medina et al (2021) recently reviewed and summarized the physiological role and signaling of ROS produced in plants during heat stress.…”

Section: Introductionmentioning

confidence: 99%

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Ethylene- and Proline-Dependent Regulation of Antioxidant Enzymes to Mitigate Heat Stress and Boost Photosynthetic Efficacy in Wheat Plants

Sehar

Gautam

Masood

et al. 2022

J Plant Growth Regul

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Ethylene regulates photosynthetic e ciency of plants grown under challenged environment by interacting with antioxidant system and other biomolecules. The role of ethylene in modulation of proline biosynthesis and subsequent changes in antioxidant machinery to protect heat stress grown wheat was studied. The effects of exogenously-sourced ethylene (as 200 µL L − 1 ethephon: 2-chloroethyl phosphonic acid) and proline (50 mM) was studied in the protection of photosynthetic performance and heat stress tolerance of wheat (Triticum aestivum L.) cv. WH-711 by studying mechanisms of proline biosynthesis, activity and gene expression of antioxidants, ethylene evolution. The cultivars, Raj-3765, PBW-373, HD-2967, PBW-550, DBW-17, PBW-343 and UP-2338 were screened for their proline accumulation capacity and tolerance to heat stress. Plants of the cultivar WH-711 with higher proline accumulation and heat tolerance capacity were subjected to 40°C for 6 h per day over 15 days, then allowed to recover at 28°C showed increased levels of H 2 O 2 and TBARS (thiobarbituric acid reactive substances), proline acumulation, ACS activity and ethylene evolution, activity of antioxidant enzymes together with reduced photosynthetic characteristics. Ethephon plus proline supplementation under heat stress upregulated antioxidant defense system, reduced oxidative stress and improved psbA and psbB expression and photosynthesis. The outcome of the study may be taken to improve photosynthetic performance and heat stress tolerance through ethylene-enhanced proline accumulation and antioxidant defense system.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ethylene- and Proline-Dependent Regulation of Antioxidant Enzymes to Mitigate Heat Stress and Boost Photosynthetic Efficacy in Wheat Plants

Sehar

Gautam

Masood

et al. 2022

J Plant Growth Regul

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“…The regulation of ABA-signaling genes was associated with the overexpression of TFs, with their highest values observed at 15 min. TFs are members of the HD-ZIP, bZIP, C2H2, and AP2 families, such as ZAT12 (C2H2 family), that participate in the induction and repression of cold-responsive and oxidative stress genes [ 60 ]; HOX22 (HD-ZIP family) is involved in the defense mechanism of pathogen-related stress response of fungi [ 61 ], and drought- [ 62 ] and heat-stress-tolerance-induced HOX24 [ 63 ] and MYBS1 [ 64 ] are the essential components of the sugar signaling pathway regulating the α-amylase gene promoter [ 65 ]. A high expression level was found for DREB1G (AP2 family), which is a typical C-repeat-binding factor (CBF/DREB1) whose specific functions was found to be related to cold stress response [ 66 , 67 ].…”

Section: Discussionmentioning

confidence: 99%

‘Garlic-lipo’4Plants: Liposome-Encapsulated Garlic Extract Stimulates ABA Pathway and PR Genes in Wheat (Triticum aestivum)

Kutasy

Kiniczky²,

Decsi

et al. 2023

Plants

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Recently, environmentally friendly crop improvements using next-generation plant biostimulants (PBs) come to the forefront in agriculture, regardless of whether they are used by scientists, farmers, or industries. Various organic and inorganic solutions have been investigated by researchers and producers, focusing on tolerance to abiotic and biotic stresses, crop quality, or nutritional deficiency. Garlic has been considered a universal remedy ever since antiquity. A supercritical carbon dioxide garlic extract encapsulated in nanoscale liposomes composed of plant-derived lipids was examined as a possible PB agent. The present study focused on the characterization of the genes associated with the pathways involved in defense response triggered by the liposome nanoparticles that were loaded with supercritical garlic extracts. This material was applied to Triticum aestivum in greenhouse experiments using foliar spraying. The effects were examined in a large-scale genome-wide transcriptional profiling experiment by collecting the samples four times (0 min, used as a control, and 15 min, 24 h, and 48 h after spraying). Based on a time-course expression analysis, the dynamics of the cellular response were determined by examining differentially expressed genes and applying a cluster analysis. The results suggested an enhanced expression of abscisic acid (ABA) pathway and pathogenesis-related (PR) genes, of which positive regulation was found for the AP2-, C2H2-, HD-ZIP-, and MYB-related transcription factor families.

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“…Regarding the use of CK, Kumar et al (2020) also found that foliar applications of CK enhance PSII activity through increased zeaxanthin activity. Non-photochemical quenching (NPQ) is another parameter of chlorophyll a fluorescence that is an indicator of energy dissipation as heat under ambient conditions (Chaudhary et al, 2020). The plants that were only subjected to combined heat stress without the application of any of the hormones in the experiments showed the highest values of NPQ.…”

Section: Discussionmentioning

confidence: 99%

Foliar cytokinins or brassinosteroids applications influence the rice plant acclimatization to combined heat stress

Pantoja-Benavides

Garcés-Varón²,

Restrepo-Díaz³

2022

Front. Plant Sci.

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The effect of different foliar sprays numbers of cytokinins – (CK) and brassinosteroids – (BR) on the physiological, biochemical, and panicle parameters of rice plants subjected to combined heat stress (high day/night temperatures) were studied in three different experiments. The treatments established for the first (E1) and second (E2) experiments were the following: i) absolute control, ii) stress control, iii) heat stress + one foliar spray of CK, iv) heat stress + two foliar sprays of CK, v) heat stress + three foliar sprays of CK, vi) heat stress + one foliar spray of BR, vii) heat stress + two foliar sprays of BR, or viii) heat stress + three foliar sprays of BR. For the third experiment (E3), the treatments were the following: i) absolute control, ii) stress control, iii) heat stress + three foliar applications of CK, iv) heat stress + three foliar applications of BR. Rice-stressed plants and sprayed with three foliar sprays of CK or BR had a better stomatal conductance in E1 and E2 compared to their heat-stressed control. The relative tolerance index suggests that three CK or BR applications helped to mitigate the combined heat stress in both experiments. The foliar CK or BR applications at the flowering and grain-filling stages in rice-stressed plants increased Fv/Fm ratio and panicle characteristics (number of filled spikelets and the percentage of panicle blanking in E3). In conclusion, foliar applications of BR or CK can be considered an agronomic strategy to help improve the negative effect of combined heat stress conditions on the physiological behavior of rice plants during different phenological stages.

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Decoding the wheat awn transcriptome and overexpressing TaRca1β in rice for heat stress tolerance

Cited by 18 publications

References 49 publications

Ethylene- and Proline-Dependent Regulation of Antioxidant Enzymes to Mitigate Heat Stress and Boost Photosynthetic Efficacy in Wheat Plants

Ethylene- and Proline-Dependent Regulation of Antioxidant Enzymes to Mitigate Heat Stress and Boost Photosynthetic Efficacy in Wheat Plants

‘Garlic-lipo’4Plants: Liposome-Encapsulated Garlic Extract Stimulates ABA Pathway and PR Genes in Wheat (Triticum aestivum)

Foliar cytokinins or brassinosteroids applications influence the rice plant acclimatization to combined heat stress

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