Effect of Heat Stress on Root Architecture, Photosynthesis, and Antioxidant Profile of Water Spinach (Ipomoea aquatica Forsk) Seedlings

Horticulturae, Journal Year: 2023, Volume and Issue: 9(8), P. 923 - 923

Published: Aug. 13, 2023

Crop productivity around the world is being seriously affected by adverse environmental conditions. High temperature (HT) stress has severely hampered plant growth, yield, and quality. Water spinach a significant heat-resilient green leafy vegetable that can mitigate prolonged HT stress. However, morphological, physiological, biochemical alterations occur in its response to heat remain unknown. In this study, physiological water plants with different (25-control, 30, 35, 40, 45 °C) tolerances was investigated. When were subjected over long period of time, their growth stunted. The results showed no difference seen between control (25 30 °C for some traits (root shoot fresh weight, root morphological traits, leaf gas exchanges parameters). Further, (35, significantly reduced status, exchange parameters, pigment content, photosystem function, architecture system spinach. Conversely, considerably enhanced secondary metabolites terms total phenolics, flavonoids, soluble sugars, anthocyanin content. Furthermore, remarkably increased accumulation reactive oxygen species (ROS) caused cellular membrane damage. effectively altered antioxidant defense oxidative Generally, an effect on enzyme activity spinach, leading cell death. current study found temperatures ≥35 had Further research will be needed examine mechanism gene expression involved death plants.

Language: Английский

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Melatonin supplementation combats nickel-induced phytotoxicity in Trigonella foenum-graecum L. plants through metal accumulation reduction, upregulation of NO generation, antioxidant defence machinery and secondary metabolites

Plant Physiology and Biochemistry, Journal Year: 2023, Volume and Issue: 202, P. 107981 - 107981

Published: Aug. 21, 2023

Language: Английский

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Novel Finding on How Melatonin and Nanoselenium Alleviate 2,4-D Butylate Stress in Wheat Plants

Journal of Agricultural and Food Chemistry, Journal Year: 2023, Volume and Issue: 71(35), P. 12943 - 12957

Published: Aug. 25, 2023

Nanoselenium (nano-Se) or melatonin (MT) foliar spray reduces pesticide stress by stimulating plant secondary metabolism and antioxidant capacity. However, the effects of nano-Se MT biofortification on interaction between metabolic pathways rhizosphere microbes in mitigating 2,4-D butyrate remain unknown. Compared to treatment alone, combined application increased enzyme activities decreased MDA (25.0%) H2O2 (39.3%) contents with butylate exposure. Importantly, they enhance soil enzymes (S-FDA 53.1%), allelochemicals (luteolin 164.1% tricin 147.3%), as well metabolites (JA 63.3% 193.3% leaves roots) levels. It also improved beneficial microbial abundance Comamonadaceae, Sphingomonadaceae, Rhodobacteraceae soil. In conclusion, alleviate wheat plants enabling microorganisms, allelopathic substances, metabolites.

Language: Английский

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Characterization of MADS-box gene family and its unique response to drought and nickel stresses with melatonin-mediated tolerance in dragon fruit (Selenicereus undatus L.)

Plant Stress, Journal Year: 2024, Volume and Issue: 12, P. 100492 - 100492

Published: May 16, 2024

Dragon fruit (pitaya) is an important tropical crop with medicinal and industrial values. However, severe environmental stress factors affect dragon production development. The MADS-box gene family performs essential role in the regulation of tolerance, reproduction, ripening various plants, but relevant studies havn't been conducted on fruit. In this study, identification expression analysis was response to abiotic pitaya seedlings. We identified 67 genes distributed across 11 chromosomes genome. All were named from HuMADS-1 HuMADS-67. phylogenetic tree HuMADS-box constructed together soybean, wheat, Arabidopsis. Based analysis, tropology motif's structure, all divided into 3 groups as Mα, Mδ, MIKC. HuMADS showed a conserved intron-exon structure motif domain organization. patterns varied 15 tissue parts pitaya. subcellular localization proteins predicted that 55.8% total members localized nucleus. syntenic 28 collinearity pairs, which 4 pairs tandem duplication 24 segmental chromosomes. Cis-acting element their regulatory roles plant defense processes. RNA-seq seedlings under single combined stresses drought nickel exhibited higher genes. addition, several enhanced melatonin treatment stresses, thereby enhancing seedling growth To validate RNA-Seq data, RT-qPCR performed 12 genes, revealing six them (HuMADS-14/15/22/62/63/67) play tolerance. Overall, our findings offer key insights for future genetic engineering strategies develop stress-tolerant genotypes.

Language: Английский

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Enhancing drought-salinity stress tolerance in lettuce: Synergistic effects of salicylic acid and melatonin

South African Journal of Botany, Journal Year: 2024, Volume and Issue: 172, P. 212 - 226

Published: July 23, 2024

Language: Английский

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