Antioxidants: Responses and Importance in Plant Defense System

Kumar, Narendra; Singh, Hukum; Sharma, Satish K

doi:10.1007/978-3-030-45669-6_11

Cited by 47 publications

(5 citation statements)

References 39 publications

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“…In the present study, tall mutant was observed in M 2 generation. It was also reported by Jana (1963) and Kumar et al. (2009) in blackgram, Solanki et al.…”

Section: Discussionsupporting

confidence: 69%

Induction of phenotypic diversity in mutagenized population of lentil (Lens culinaris Medik) by using heavy metal

Shahwar

Ansari

Choudhary

2019

Heliyon

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Pulse breeding has been performed in the past by utilizing the genetic variability using conventional method. At the present time, these techniques are insufficient for producing new cultivars to fulfill globally increased food demand. In this situation, induced mutagenesis have been appeared as a new technique which are largely utilized for evolving improved mutants with good quality of agronomic traits and for determining desired genes that control agronomical traits. In the present investigation lentil seeds were mutagenized with different doses (5, 10, 15, 20 and 25 ppm) of lead and cadmium nitrate. M 2 generation was raise from collected seeds of M 1 generation. Distinct morphological mutants were selected with different traits such plant height, growth habit, leaf morphology, flower character, pigmentation and pod size. Different meiotic aberration such as stickiness, precocious separation of chromosome, unequal division, disturbed polarity with laggards, cytomixis, disorientation, unpolarized chromosome, sticky metaphase, multinucleate condition with micronuclei were also observed in this experiment. Some mutants may be utililised directly in selection or some of these are beneficial in breeding programme. Beneficial mutants were determined at lower concentrations both heavy metals with highest mutation frequency in cadmium than lead nitrate.

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“…In the present study, tall mutant was observed in M 2 generation. It was also reported by Jana (1963) and Kumar et al. (2009) in blackgram, Solanki et al.…”

Section: Discussionsupporting

confidence: 69%

Induction of phenotypic diversity in mutagenized population of lentil (Lens culinaris Medik) by using heavy metal

Shahwar

Ansari

Choudhary

2019

Heliyon

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“…Antioxidants are involved in biotic and abiotic stress, including defense, oxidative damage, and free-radical scavenging 58 . Also, light stress plays a crucial role in the production, turnover, and destruction of antioxidants 59 – 61 . Red light increased the antioxidant activity in pea 62 and Dendrobium officinale seedlings 63 , but also in Eleutherococcus senticosus somatic embryos 64 .…”

Section: Discussionmentioning

confidence: 99%

Increasing the performance of Passion fruit (Passiflora edulis) seedlings by LED light regimes

Liang

Ahmed

Wei

et al. 2021

Sci Rep

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Due to progress in the industrial development of light-emitting diodes (LEDs), much work has been dedicated to understanding the reaction of plants to these light sources in recent years. In this study, the effect of different LED-based light regimes on growth and performance of passion fruit (Passiflora edulis) seedlings was investigated. Combinations of different light irradiances (50, 100, and 200 µmol m−2 s−1), quality (red, green, and blue light-emitting LEDs), and photoperiods (10 h/14 h, 12 h/12 h and 14 h/10 h light/dark cycles) were used to investigate the photosynthetic pigment contents, antioxidants and growth traits of passion fruit seedlings in comparison to the same treatment white fluorescent light. Light irradiance of 100 µmol m−2 s−1 of a 30% red/70% blue LED light combination and 12 h/12 h light/dark cycles showed the best results for plant height, stem diameter, number of leaves, internode distance, and fresh/dry shoot/root weights. 14 h/10 h light/dark cycles with the same LED light combination promoted antioxidant enzyme activities and the accumulation of phenols and flavonoids. In contrast, lower light irradiance (50 µmol m−2 s−1) had negative effects on most of the parameters. We conclude that passion fruit seedlings' optimal performance and biomass production requires long and high light irradiances with a high blue light portion.

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“…Another consideration is the generation of antioxidants to detoxify ROS and prevent oxidative damage during oxidative stress (Kumar et al, 2020). ROS has been suggested to have a dual function in abiotic stress responses such that at high levels ROS are toxic to cells while the same ROS can function as a signal that activates local and systemic plant defenses (Nadarajah, 2020).…”

Section: Metabolic Regulation Of Osmotic Stress and Rosmentioning

confidence: 99%

Metabolic signatures of Arabidopsis thaliana abiotic stress responses elucidate patterns in stress priming, acclimation, and recovery

Freund

Hegeman

et al. 2022

Stress Biology

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Temperature, water, and light are three abiotic stress factors that have major influences on plant growth, development, and reproduction. Plants can be primed by a prior mild stress to enhance their resistance to future stress. We used an untargeted metabolomics approach to examine Arabidopsis thaliana 11-day-old seedling’s abiotic stress responses including heat (with and without priming), cold (with and without priming), water-deficit and high-light before and after a 2-day-recovery period. Analysis of the physiological phenotypes showed that seedlings with stress treatment resulted in a reduction in fresh weight, hypocotyl and root length but remained viable. Several stress responsive metabolites were identified, confirmed with reference standards, quantified, and clustered. We identified shared and specific stress signatures for cold, heat, water-deficit, and high-light treatments. Central metabolism including amino acid metabolism, sugar metabolism, glycolysis, TCA cycle, GABA shunt, glutathione metabolism, purine metabolism, and urea cycle were found to undergo changes that are fundamentally different, although some shared commonalities in response to different treatments. Large increases in cysteine abundance and decreases in reduced glutathione were observed following multiple stress treatments highlighting the importance of oxidative stress as a general phenomenon in abiotic stress. Large fold increases in low-turnover amino acids and maltose demonstrate the critical role of protein and starch autolysis in early abiotic stress responses.

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Antioxidants: Responses and Importance in Plant Defense System

Cited by 47 publications

References 39 publications

Induction of phenotypic diversity in mutagenized population of lentil (Lens culinaris Medik) by using heavy metal

Induction of phenotypic diversity in mutagenized population of lentil (Lens culinaris Medik) by using heavy metal

Increasing the performance of Passion fruit (Passiflora edulis) seedlings by LED light regimes

Metabolic signatures of Arabidopsis thaliana abiotic stress responses elucidate patterns in stress priming, acclimation, and recovery

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