The Regulatory Effect of Se-Cd Interaction on Tea Plants (Camellia sinensis (L.) O. Kuntze) Under Cadmium Stress

Agronomy, Journal Year: 2025, Volume and Issue: 15(1), P. 246 - 246

Published: Jan. 20, 2025

This study utilized annual Fuding Dabaicha cuttings as the experimental subject, employing a nutrient solution cultivation technique to establish three distinct treatments: (1) CK: reference processing; (2) Cd: 20 mg/L CdSO4 culture; (3) Cd + Se: 1.5 Na2SeO3 culture. We measured and analyzed electrolyte permeability, proline content, malondialdehyde (MDA) antioxidant-related indicators, photosynthesis-related content in various organs, transmission electron microscopy images depicting distribution of Se elements within different organs tea plants under these treatments after 30 days processing, studying regulatory role selenium on resistance mechanism (Camellia sinensis) cadmium stress. The findings are follows: stress notably elevated electrical conductivity, MDA plants, whereas Se1 treatment significantly reduced stress; increased peroxides tree leaves decreased activities four antioxidant enzymes, SOD, POD, CAT, Apx; peroxide trees values certain chlorophyll fluorescence parameters had no significant impact light energy, some induced an uneven energy; (4) order accumulation was root > stem leaf, In cells, were predominantly located cell wall, plasma membrane, vacuole membrane; they primarily found wall cytoplasm adjacent wall; leaf mainly distributed cytoplasm, vacuole. conclusion, which resulted stimulatory effect photosynthesis, but caused damage photosynthetic apparatus chloroplasts. results suggest that interaction between can mitigate toxicity experienced by

Language: Английский

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Neophytadiene, a Plant Specialized Metabolite, Mediates the Virus‐Vector‐Plant Tripartite Interactions

Advanced Science, Journal Year: 2025, Volume and Issue: unknown

Published: April 3, 2025

While interactions between viruses and their vectors, as well host plants, have been extensively studied, the genetic mechanisms underlying tripartite remain largely unknown. In this study, phenotypic assays are integrated with molecular biology functional genomic approaches to elucidate involving tomato chlorosis virus (ToCV), a major threat production worldwide, whitefly, Bemisia tabaci, an insect vector, plants. ToCV infection induces of chlorophyll degradation product that acts volatile attractant for whiteflies. Furthermore, suppression Lhca4, gene encoding subunit light-harvesting complex I in by P9 protein leads neophytadiene biosynthesis. Overexpression Lhca4 reduced infection. OBP2, odorant-binding from B. capable binding is identified. Suppression BtOBP2 impaired vector's subsequent preference ToCV-infected The results not only reveal underpinnings, including P9, plant whitefly BtOBP2, governing virus-vector-plant interactions, but also highlight neophytadiene, specialized metabolite mediator intricate multitrophic suggesting new avenues managing vectored insects.

Language: Английский

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Effects of ultraviolet radiation as a climate variable on the geographic distribution of Oryza sativa under climate change based on Biomod2

Frontiers in Plant Science, Journal Year: 2025, Volume and Issue: 16

Published: April 16, 2025

Oryza sativa is one of the most important cereal crops globally. The aim this study was to map areas suitable for growth and conservation O. under current future climatic conditions, observe effects UV variables on distribution area sativa. Based species records, we used Biomod2 platform combine climate data, shared socioeconomic pathways, elevation data. ensemble model (EM) constructed by screening multiple models (SDMs), including RF, GBM, ANN, MARS. ROC value joint greater than 0.95, indicating that has high reliability accuracy. Mean annual temperature (bio01), seasonality (bio04), minimum in coldest month (bio06), mean quarter (bio11), human footprint activity impact index (hfv2geo1) average ultraviolet radiation (uvb1annualmeanuv.b) were environmental affecting Under habitats are mainly distributed south Yangtze River. In scenario, total habitat tended decrease, but influence larger without UV. Climate change will significantly affect potential China increase its extinction risk. Therefore, it necessary provide a reference conservation, management, introduction cultivation food China.

Language: Английский

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Metagenomics and metabolomics analysis revealed that Se-mediated Cd precipitation and nutrient cycling regulated soil-rice (Oryza sativa L) microenvironmental homeostasis under cadmium stress

Environmental and Experimental Botany, Journal Year: 2024, Volume and Issue: 228, P. 105958 - 105958

Published: Sept. 6, 2024

Language: Английский

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Differential Photosynthetic and Proteomics Responses Between Male and Female Populus deltoides W. Bartram ex Marshall Infected by Alternaria alternata (Fr.) Keissler

Forests, Journal Year: 2024, Volume and Issue: 15(12), P. 2093 - 2093

Published: Nov. 26, 2024

Alternaria alternata (Fr.) Keissler is a widespread leaf blight pathogen that disrupts many plants; including poplars. Despite its broad impact, the sex-specific responses of male and female plants to this remain poorly studied. This study investigated sex differences in morphological; photosynthetic; proteomic between Populus deltoides W. Bartram ex Marshall infected with A. alternata. The results showed had faster onset infection more inhibited growth comparison males. In terms photosynthetic parameters, females were severely affected, 2 subunits electron transport chain expressed at higher levels 12 lower than Regarding antioxidant system; exhibited reactive oxygen species (ROS) contents but activities, significantly expressions superoxide dismutases (SODs); peroxidases (PODs); ascorbate (APXs); glutathione peroxidases; 4 S-transferases compared phenylpropanoid biosynthesis pathway, shikimate O-hydroxycinnamoyl transferase ferulate-5-hydroxylase upregulated both after infection. However, expression was consistently higher, while caffeic acid 3-O-methyltransferase These indicate induces significant alterations capacity; biosynthetic pathway Moreover, bimodal regulation observed, poplars demonstrating greater stability systems.

Language: Английский

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