ArticleInternational journal of molecular sciences2012
Primary, secondary metabolites, photosynthetic capacity and antioxidant activity of the Malaysian Herb Kacip Fatimah (Labisia Pumila Benth) exposed to potassium fertilization under greenhouse conditions.
Article in International journal of molecular sciences, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.
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22 citing papers in PubMed, 105 citations in OpenAlex.
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- Effect of potassium on the agronomic traits and fruit quality of Goji (Lycium barbarum L.).Scientific reports · 2024Article
- How Does Zinc Improve Salinity Tolerance? Mechanisms and Future Prospects.Plants (Basel, Switzerland) · 2023Review
- Enhancing Health Benefits through Chlorophylls and Chlorophyll-Rich Agro-Food: A Comprehensive Review.Molecules (Basel, Switzerland) · 2023Review
- Light and Potassium Improve the Quality ofMolecules (Basel, Switzerland) · 2022Article
- Integrated Physiological and Metabolomic Analyses of the Effect of Potassium Fertilizer on Citrus Fruit Splitting.Plants (Basel, Switzerland) · 2022Article
- Root GS and NADH-GDH Play Important Roles in Enhancing the Ammonium Tolerance in Three Bedding Plants.International journal of molecular sciences · 2022Article
- A first approach for the micropropagation of the medicinal halophyteFrontiers in plant science · 2022Article
- Effect of Various Mulch Materials on Chemical Properties of Soil, Leaves and Shoot Characteristics inPlants (Basel, Switzerland) · 2021Article
- Preliminary Study on the Effect of Nitrogen Fertilisation on Phytochemical Content Quality ofTropical life sciences research · 2021Article
- Exogenous Application of Zinc to Mitigate the Salt Stress inPlants (Basel, Switzerland) · 2021Article
- Effect of Organic Fertilizers on Selected Health Beneficial Bioactive Compounds and Aroma Profile of RedFoods (Basel, Switzerland) · 2020Article
- Alterations in Herbage Yield, Antioxidant Activities, Phytochemical Contents, and Bioactive Compounds of Sabah Snake Grass (Molecules (Basel, Switzerland) · 2020Article
- Natural Variation in Volatile Emissions of the Invasive WeedPlants (Basel, Switzerland) · 2020Article
- Nutraceutical Profiles of Two Hydroponically Grown Sweet Basil Cultivars as Affected by the Composition of the Nutrient Solution and the Inoculation WithFrontiers in plant science · 2020Article
- Physiological mechanisms of aluminum (Al) toxicity tolerance in nitrogen-fixing aquatic macrophyte Azolla microphylla Kaulf: phytoremediation, metabolic rearrangements, and antioxidative enzyme responses.Environmental science and pollution research international · 2019Article
- Expression analysis of Cell wall invertase under abiotic stress conditions influencing specialized metabolism in Catharanthus roseus.Scientific reports · 2018Article
- Plant growth under water/salt stress: ROS production; antioxidants and significance of added potassium under such conditions.Physiology and molecular biology of plants : an international journal of functional plant biology · 2017Article
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
A randomized complete block design was used to characterize the relationship between production of total phenolics, flavonoids, ascorbic acid, carbohydrate content, leaf gas exchange, phenylalanine ammonia-lyase (PAL), soluble protein, invertase and antioxidant enzyme activities (ascorbate peroxidase (APX), catalase (CAT) and superoxide dismutase (SOD) in Labisia pumila Benth var. alata under four levels of potassium fertilization experiments (0, 90, 180 and 270 kg K/ha) conducted for 12 weeks. It was found that the production of total phenolics, flavonoids, ascorbic acid and carbohydrate content was affected by the interaction between potassium fertilization and plant parts. As the potassium fertilization levels increased from 0 to 270 kg K/ha, the production of soluble protein and PAL activity increased steadily. At the highest potassium fertilization (270 kg K/ha) L. pumila exhibited significantly higher net photosynthesis (A), stomatal conductance (g(s)), intercellular CO(2) (C(i)), apparent quantum yield (ξ) and lower dark respiration rates (R(d)), compared to the other treatments. It was found that the production of total phenolics, flavonoids and ascorbic acid are also higher under 270 kg K/ha compared to 180, 90 and 0 kg K/ha. Furthermore, from the present study, the invertase activity was also found to be higher in 270 kg K/ha treatment. The antioxidant enzyme activities (APX, CAT and SOD) were lower under high potassium fertilization (270 kg K/ha) and have a significant negative correlation with total phenolics and flavonoid production. From this study, it was observed that the up-regulation of leaf gas exchange and downregulation of APX, CAT and SOD activities under high supplementation of potassium fertilizer enhanced the carbohydrate content that simultaneously increased the production of L. pumila secondary metabolites, thus increasing the health promoting effects of this plant.
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