Deciphering the Mechanism of Melatonin-Induced Enhancement of Photosystem II Function in Moderate Drought-Stressed Oregano Plants

Plants, Год журнала: 2024, Номер 13(18), С. 2590 - 2590

Опубликована: Сен. 16, 2024

Melatonin (MT) is considered as an antistress molecule that plays a constructive role in the acclimation of plants to both biotic and abiotic stress conditions. In present study, we assessed impact 10 100 μM MT foliar spray, on chlorophyll content, photosystem II (PSII) function, under moderate drought stress, oregano (Origanum vulgare L.) plants. Our aim was elucidate molecular mechanism action photosynthetic electron transport process. Foliar spray with more effective mitigating negative PSII compared MT. significantly improved reduced efficiency oxygen-evolving complex (OEC), photoinhibition (Fv/Fm), which were caused by stress. Under MT, water sprayed (WA) leaves, increased non-photochemical quenching (NPQ) 31%, at growth irradiance (GI, 205 μmol photons m−2 s−1), 13% high (HI, 1000 s−1). However, lower NPQ increase HI demonstrated be decreasing singlet-excited oxygen (1O2) production (−38%), drought-stressed than corresponding decrease 1O2 GI (−20%), respective WA-sprayed leaves drought. The resulted significant quantum yield photochemistry (ΦPSII), rate (ETR), plants, but only (+27%). results suggest enhancement functionality, initiated mechanism, decreased fraction open reaction centers (qp), resulting ETR.

Язык: Английский

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Light-driven modulation of plant response to water deficit. A review

Functional Plant Biology, Год журнала: 2025, Номер 52(5)

Опубликована: Апрель 21, 2025

The dependence of agriculture on water availability is an important premise justifying attempts to enhance use efficiency for plant production. Photosynthetic efficiency, directly impacts biomass production, dependent both and the quality quantity light. Understanding how these factors interact crucial improving crop yields. Many overlapping signalling pathways functions common bioactive molecules that shape responses deficit light have been identified discussed in this review. Separate or combined action environmental include generation reactive oxygen species, biosynthesis abscisic acid, stomatal functioning, chloroplast movement alterations levels photosynthetic pigments molecules. Plant response depends intensity its characteristics, with differentiated from UV, blue, red bands determining strength synergistic antagonistic nature interactions. Despite significance, effects remain insufficiently explored. findings highlight potential optimising horticultural production through controlled conditions regulated irrigation. Future research should assess manipulation strategies resource nutritional value.

Язык: Английский

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Identification of the sucrose phosphate synthase (SPS) gene family reveals the positive role of NtSPS5 and NtSPS6 in drought stress tolerance of tobacco

Chemical and Biological Technologies in Agriculture, Год журнала: 2025, Номер 12(1)

Опубликована: Янв. 7, 2025

Sucrose phosphate synthase (SPS) is an important enzyme in the sucrose synthesis of plants, governing accumulation and distribution photosynthetic assimilates, which essential for plant growth stress tolerance. This study successfully identified eight NtSPS genes within genome cultivated tobacco. Phylogenetic analysis revealed that these are categorized into three subfamilies, a classification supported by examination their gene structures conserved domains. The promoters NtSPSs contained variety cis-elements associated with development, responses to phytohormones, resistance. Expression profiling demonstrated exhibit distinct expression patterns across different tissues under various conditions. Notably, majority genes, especially NtSPS5 NtSPS6, showed high leaves increased both roots following drought treatment. Furthermore, overexpression NtSPS6 tobacco plants significantly improved germination rate mannitol treatment enhanced activity antioxidant enzymes along chlorophyll fluorescence parameters stress. These results suggest have positive impact on tolerance plants. Therefore, this provides significant target resistance breeding lays foundation further investigation function regulatory mechanisms SPS genes.

Язык: Английский

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Genomic introgression underlies environmental adaptation in three species of Chinese wingnuts, Pterocarya

Plant Diversity, Год журнала: 2025, Номер unknown

Опубликована: Апрель 1, 2025

Язык: Английский

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MiR9474-5p regulatory function in tomato fruit development and ripening: Comprehensive transcriptomic analysis

Postharvest Biology and Technology, Год журнала: 2025, Номер 226, С. 113558 - 113558

Опубликована: Апрель 10, 2025

Язык: Английский

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Role of melatonin in mitigating drought stress in <i>Areca catechu</i> L.: insights from integrated physiological, biochemical, and transcriptomic analysis

Tropical Plants, Год журнала: 2025, Номер 4(1), С. 0 - 0

Опубликована: Янв. 1, 2025

Язык: Английский

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Exogenous Melatonin Affects Kiwifruit Growth and Quality Through Hormone Signaling Pathway

Опубликована: Янв. 1, 2025

Язык: Английский

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Exogenously applied MT enhanced cold tolerance in tea plants by increasing fatty acid desaturation and polyamine metabolism

Environmental and Experimental Botany, Год журнала: 2025, Номер unknown, С. 106173 - 106173

Опубликована: Май 1, 2025

Язык: Английский

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Identification and functional analysis of two serotonin N-acetyltransferase genes in maize and their transcriptional response to abiotic stresses

Frontiers in Plant Science, Год журнала: 2024, Номер 15

Опубликована: Окт. 1, 2024

Melatonin, a tryptophan-derived indoleamine metabolite with important roles in plant growth and defense, has recently been regarded as new hormone. Maize is one of the most cereal crops world. Although melatonin receptor gene,

Язык: Английский

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Integrated metabolome, transcriptome and physiological analyses of melatonin-induced drought responses in maize roots and leaves

Plant Growth Regulation, Год журнала: 2024, Номер unknown

Опубликована: Дек. 31, 2024

Язык: Английский

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