A potential seedling-stage evaluation method for heat tolerance in Indian mustard (Brassica juncea L. Czern and Coss)

Archana, N.; Saini, Nupur; Yadav, Rashmi; Suprasanna, Penna

doi:10.1007/s13205-020-2106-9

Cited by 14 publications

(14 citation statements)

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“…These observations further proved that as compared to 30 October and 15 November sowings, 30 November sown crop experienced severe stress, and the ROS scavenging system was not so efficient to detoxify the generated ROS causing severe oxidation of membrane lipids and accumulation of MDA. These observations are in accordance with the observation of Rai A. N. et al ( 2020 ) and Ahmed et al ( 2019 ). It has been explained earlier that November 30 sown crop experienced higher oxidative stress, as they exhibited higher membrane damage which was evident from increased H 2 O 2 ( Table 1 ) and MDA contents ( Table 2 ).…”

Section: Discussionsupporting

confidence: 94%

“…To restrict the oxidative impairment, the plants also have a set of advanced detoxification systems, which transform the highly destructive ROS into non-toxic compounds (Mohan et al, 2020b ). The plants shield the cells and sub-cellar systems damage from the ROS using antioxidant enzymes such as ascorbate peroxidase (APX), peroxidase (POX), superoxide dismutase (SOD), catalase (CAT), glutathione reductase (GR), polyphenol oxidase (PPO), and metabolites such as glutathione (GSH), ascorbic acid (AsA), tocopherol, and carotenoids (Rai A. N. et al, 2020 ). Substantial changes occur in antioxidant system linked to unfavorable environment, including the enzymatic and non-enzymatic antioxidants.…”

Section: Introductionmentioning

confidence: 99%

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Alterations of Oxidative Stress Indicators, Antioxidant Enzymes, Soluble Sugars, and Amino Acids in Mustard [Brassica juncea (L.) Czern and Coss.] in Response to Varying Sowing Time, and Field Temperature

et al. 2022

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The impact of elevated temperature at the reproductive stage of a crop is one of the critical limitations that influence crop growth and productivity globally. This study was aimed to reveal how sowing time and changing field temperature influence on the regulation of oxidative stress indicators, antioxidant enzymes activity, soluble sugars (SS), and amino acids (AA) in Indian Mustard. The current study was carried out during the rabi 2017–2018 and 2018–2019 where, five varieties of mustard viz. Pusa Mustard 25 (PM-25) (V1), PM-26 (V2), BPR-541-4 (V3), RH-406 (V4), and Urvashi (V5) were grown under the field conditions on October 30 (normal sowing; S1), November 18 (late sowing; S2) and November 30 (very late sowing; S3) situations. The S1 and S3 plants, at mid-flowering stage, showed a significant variation in accumulation of SS (8.5 and 17.3%), free AA (235.4 and 224.6%), and proline content (118.1 and 133%), respectively, and played a crucial role in the osmotic adjustment under stress. The results showed that S3 sowing, exhibited a significant induction of the hydrogen peroxide (H2O2) (110.2 and 86.6%) and malondialdehyde (23.5 and 47.5%) concentrations, respectively, which indicated the sign of oxidative stress in plants. Interestingly, the polyphenol oxidase, peroxidase, superoxide dismutase, and catalase enzyme activities were also significantly increased in S3 plants compared to S1 plants, indicating their significant roles in ameliorating the oxidative stress. Furthermore, the concentration of fatty acid levels such as palmitic, stearic, oleic, and linoleic acids level also significantly increased in S3 plants, which influenced the seed and oil quality. The study suggests that the late sowing significantly impaired the biochemical mechanisms in Indian mustard. Further, the mustard variety V4 (RH-406) was found to be effective for cultivation as well as environmental stress adoption in Indian soils, and it could be highly useful in breeding for developing heat-tolerant genotypes for ensuring the food security.

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Section: Discussionsupporting

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Alterations of Oxidative Stress Indicators, Antioxidant Enzymes, Soluble Sugars, and Amino Acids in Mustard [Brassica juncea (L.) Czern and Coss.] in Response to Varying Sowing Time, and Field Temperature

et al. 2022

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“…Salinity-induced decline in germination percentage was also observed in mungbean by Hanumantha Rao et al [17]. Number of germinated seeds remarkably reduced for mustard genotypes upon exposure to higher temperature, as reported by Rai et al [18]. The reduction in germination percentage in response to increasing salt concentration and hightemperature was also observed in perennial grasses by Khan and Gulzar [19].…”

Section: Germination Percentagesupporting

confidence: 53%

Screening of Indian Mustard (Brassica juncea L. Czern and Coss) Genotypes with Respect to Seedling Growth Physiology under Salinity and High-Temperature Stress

Prasad

Kavita

Kiran

et al. 2021

IJECC

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The experiment was carried out to screen mustard genotypes under individual and combined salinity and high-temperature stress at seedling stage. Seeds after being sown in soil-filled trays were subjected to two levels of salinity stress i.e. 4.0 dSm-1 and 6.0 dSm-1, and high-temperature (40℃), and their performances were also compared with control (1.2 dSm-1). Contrasting sets of genotypes were selected on the basis of seedling growth parameters such as germination percentage, seedling length, dry weight of seedlings, vigour index-I and vigour index-II, recorded in 15-day-old seedlings. With consideration to the genotypic variations observed under all the treatments, genotypes CS2009-347 and CS-52 were identified as tolerant, and genotypes CS2009-256 and CS2009-145 were identified as susceptible under salinity and high-temperature stress conditions. The results also revealed that the impact of salinity and high-temperature in combination on mustard at seedling stage was more detrimental than that of their effects under individual conditions. These findings of genotypic variations in terms of tolerance in seedling stage of Indian mustard might be helpful in selection of genotypes with improved tolerance to salinity and high-temperature.

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“…Tomato leaves of thermosensitive and thermotolerant genotypes exposed to heat stress showed elevated MDA content and electrolyte leakage [ 27 ]. Electrolyte leakage of Indian mustards increased in both thermotolerant and thermosensitive genotypes ranging from 2–2.75-fold after heat stress treatment, compared to the control, while MDA content was notably higher in thermosensitive genotypes [ 28 ]. Physiological alterations resulting from heat stress were also noticed in rice.…”

Section: Discussionmentioning

confidence: 99%

Effect of Heat Stress on Some Physiological and Anatomical Characteristics of Rice (Oryza sativa L.) cv. KDML105 Callus and Seedling

Taratima

Chuanchumkan

Maneerattanarungroj

et al. 2022

Biology

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Global warming is a serious problem, with significant negative impacts on agricultural productivity. To better understand plant anatomical adaptation mechanisms as responses to heat stress, improved basic knowledge is required. This research studied the physiological and anatomical responses of Khao Dawk Mali 105 (KDML105) to artificial heat stress. Dehusked seeds were sterilized and cultured on Murashige and Skoog (MS) medium, supplemented with 3 mg/L 2,4-Dichlorophenoxyacetic acid (2,4-D) for callus induction. The cultures were maintained at 25 °C and 35 °C for 4 weeks, while the other culture was treated with heat shock at 42 °C for 1 week before further incubation at 25 °C for 3 weeks. Results revealed that elevated temperatures (35 °C and 42 °C) adversely impacted seedling growth. Plant height, root length, leaf number per plant, fresh and dry weight, chlorophyll a, chlorophyll b and total chlorophyll content decreased after heat stress treatment, while malondialdehyde (MDA) and electrolyte leakage percentage significantly increased, compared to the control. Heat stress induced ROS accumulation, leading to lipid peroxidation and membrane instability. Principal component analysis (PCA) and hierarchical cluster analysis (HCA) results also confirmed negative correlations between MDA, electrolyte leakage and other parameters. MDA content and electrolyte leakage are effective indicators of heat stress in rice. Surface anatomical responses of rice seedlings to heat stress were studied but significant alterations were not observed, and heat stress had no significant negative effects on KDML105 calli. Size and mass of calli increased because heat stress stimulated gene expression that induced thermotolerance. Our results provide useful information for rice breeding and heat stress tolerance programs to benefit long-term global food security.

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A potential seedling-stage evaluation method for heat tolerance in Indian mustard (Brassica juncea L. Czern and Coss)

Cited by 14 publications

References 34 publications

Alterations of Oxidative Stress Indicators, Antioxidant Enzymes, Soluble Sugars, and Amino Acids in Mustard [Brassica juncea (L.) Czern and Coss.] in Response to Varying Sowing Time, and Field Temperature

Alterations of Oxidative Stress Indicators, Antioxidant Enzymes, Soluble Sugars, and Amino Acids in Mustard [Brassica juncea (L.) Czern and Coss.] in Response to Varying Sowing Time, and Field Temperature

Screening of Indian Mustard (Brassica juncea L. Czern and Coss) Genotypes with Respect to Seedling Growth Physiology under Salinity and High-Temperature Stress

Effect of Heat Stress on Some Physiological and Anatomical Characteristics of Rice (Oryza sativa L.) cv. KDML105 Callus and Seedling

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