Foliar application of KNO3 modulates the biomass yield, nutrient uptake and accumulation of secondary metabolites of Stevia rebaudiana under saline conditions

Mahajan, Mitali; Sharma, Surbhi; Kumar, Pawan; Pal, Probir Kumar

doi:10.1016/j.indcrop.2020.112102

Cited by 27 publications

(3 citation statements)

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“…Earlier salinity induced increased in secondary metabolites has been reported in soybean (Soliman et al, 2020) and wheat (Ahanger et al, 2019a). Application of K has been reported to improve secondary metabolites in Stevia rebaudiana resulting greater chlorophyll and biomass production under salinity stress (Mahajan et al, 2020). Liu et al (2020) have demonstrated increase in specific secondary metabolites in cucumber due to Spd application resulting in increased salinity tolerance and greater protection to energy metabolism.…”

Section: Discussionmentioning

confidence: 98%

Interactive effect of potassium and spermidine protects growth, photosynthesis and chlorophyll biosynthesis in Vigna angularis from salinity induced damage by up-regulating the tolerance mechanisms

Al-Mushhin

2022

Not Bot Horti Agrobo

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Pot experiments were conducted to evaluate the role of potassium (100 mg KCl / kg soil) and the spermidine (100 µM Spd) in regulation of growth, chlorophyll synthesis and photosynthesis in Vigna angularis under salinity stress (100 mM NaCl). Salinity declined chlorophyll synthesis by causing a significant decline in the synthesis of δ-amino levulinic acid (ALA), prototoporphyrin IX (Proto IX) and Mg-prototoporphyrin IX (Mg-Proto IX), however application of K and Spd alone as well as combinedly alleviated the decline to considerable extent. Further, K and Spd treated plants exhibited a significant decline in reactive oxygen species and the lipid peroxidation and such effects were also obvious under salinity stress. Photosynthetic rate, stomatal conductance, intercellular CO2 concentration, Fv/Fm and photochemical quenching increased significantly due to K and Spd application, and salinity induced alleviation of the decline was maximal due to combined K and Spd treatment. Up-regulation of antioxidant enzymes activity, increased content of ascorbic acid and glutathione (GSH), and the accumulation of compatible osmolytes due to K and Spd application strengthened the tolerance against the salinity stress thereby lessening the oxidative effects considerably. Accumulation of phenols and flavonoids increased significantly due to application of K and Spd. Salinity caused significant increase in Na however K and Spd application induced a significant decline concomitant with increase in K content reflecting in decreased Na/K. Results suggest that K and Spd application protect the growth and photosynthesis from salinity induced oxidative damage by up-regulating the ion homeostasis, antioxidant system, osmolyte accumulation and secondary metabolite synthesis.

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Section: Discussionmentioning

confidence: 98%

Interactive effect of potassium and spermidine protects growth, photosynthesis and chlorophyll biosynthesis in Vigna angularis from salinity induced damage by up-regulating the tolerance mechanisms

Al-Mushhin

2022

Not Bot Horti Agrobo

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“…Anise Pimpinella anisum L. Apiaceae Fe and Zn foliar spray improved the yield of anise, and the highest yield was obtained from 4 g L −1 Zn with 6 g L −1 Fe for biological yield, and from 2 to 4 g L −1 Zn with 6 g L −1 Fe for essential oils [101] Atractylodes Atractylodes macrocephala Koidz Asteraceae Foliar application of 5.0-10.0 mg m −2 selenium was effective in growth of atractylodes [102] Foliar application of 2.5-20.0 mg m −2 selenium could alleviate the pest damage of leaves [102] Basil Ocimum basilicum L. Lamiaceae Foliar application of zinc sulfate is the appropriate candidate to improve essential oil [103] Candyleaf (Stevia) Stevia rebaudiana Bertoni Asteraceae Application of selenium alone or mixed with iron boosted the growth characteristics of stevia [104] KNO 3 application alleviated the adverse impacts of salinity on yield by up to 26% [105] Foliar application of moringa leaf extract promoted growth, increased mineral content and nutraceutical and boosted stevioside contents of stevia leaves [106] Castor bean Ricinus communis L. Euphorbiaceae Foliar application of S and P had important role in improving seed and oil yields as well as in boosting oil quality [107] Chamomile Matricaria chamomilla L. Asteraceae Flower yield, essential oil percentage and essential oil yield improved by foliar application of Zn and Fe [108] Costmary Tanacetum balsamita L. Asteraceae Growth parameters, total phenol content, protein, antioxidant capacity and chlorophyll index were stimulated by zinc supply [109] Foliar spray of iron markedly influenced leaves fresh and dry weights, root fresh and dry weights and peroxidase content [110] Damask rose Rosa damascene Mill Rosaceae Foliar spray of copper, magnesium and zinc sulfate modulated higher numbers of flowers, flower yield per plant and higher cintronellol + nerol content [111] Fenugreek Trigonellafoenum-graecum Fabaceae Foliar spray of zinc oxide nanoparticles had positive impacts on some biochemical and physiological parameters [112] Fennel Foeniculum vulgare Mill Apiaceae Foliar spray of N and P alleviated the anethole content of oil and boosted that of fenchone significantly [113] Lemon Balm Melissa officinalis L. Lamiaceae Foliar application of Fe, Cu, Mn and Zn induced to significant impacts on morpho-physiological and essential oil content and composition of lemon balm [114] Mexican marigold Tagetes minuta L. Asteraceae Essential oil content improved with increasing diammonium phosphate levels [115] Mint Mentha arvensis L Lamiaceae Foliar spray of sodium chloride markedly alleviated the population of adult whitefly in menthol mint [116] Application of zinc sulfate and iron sulfate promoted yield and yield attributes [117] Mustard Brassica juncea L. Brassicaceae Folia...…”

Section: Scientific Name Plant Family Key Point Referencesmentioning

confidence: 99%

Foliar application of nutrients on medicinal and aromatic plants, the sustainable approaches for higher and better production

Shahrajabian

Sun

Cheng

2022

Beni-Suef Univ J Basic Appl Sci

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Background The most important advantages of foliar fertilization are to improve plant growth and crop quality, appropriately manage the nutritional status of plants, enhance disease resistance and regulate nutrient deficiencies. Main body The aim of this manuscript is to outline and emphasize the importance of foliar application of nutrients in order to increase both quality and yield of medicinal and aromatic plants. The searches focused on publications from 1980 to July 2021 using PubMed, Google Scholar, Science Direct and Scopus databases. The current manuscript presented many examples of potential of foliar application for medicinal and aromatic plants production systems. Foliar application of Fe and Zn on Anise; Se on Atractylodes; Zn sulfate on Basil, Costmary, Mint and Fenugreek; Se and Fe on Stevia; S and P on castor bean; Zn and Fe on Chamomile; Cu, Mg and ZnSO4 on Damask rose; N and P on Fennel; Se on water spinach and tea; K+ and Ca2+ on Thyme; Zn and K on Spearmint; Zn on Saffron, Ni on Pot marigold; Fe on peppermint, N and P on Mustard had positive and significant impacts. Conclusion Observed impacts of foliar fertilization consisted of significant increase of yield, enhanced resistance to insects, pests and diseases, improved drought tolerance and escalated crop quality.

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“…Even for halophytes, the germination and seedling growth are also retarded under salt-stress conditions [ 62 ]. Excessive salinity leads to high soil osmotic pressure that can cause physiological water shortage of plants, and even death [ 63 , 64 ]. Plants respond to such stress by accumulating various osmolytes (proline, glycine betaine and sugars), secondary metabolites and antioxidants to maintain cell turgor [ 65 , 66 , 67 ].…”

Section: Soil Problems In Medicinal Plant Cultivationmentioning

confidence: 99%

Contributions of Beneficial Microorganisms in Soil Remediation and Quality Improvement of Medicinal Plants

Gang

Ren

Bai

et al. 2022

Plants

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Medicinal plants (MPs) are important resources widely used in the treatment and prevention of diseases and have attracted much attention owing to their significant antiviral, anti-inflammatory, antioxidant and other activities. However, soil degradation, caused by continuous cropping, excessive chemical fertilizers and pesticide residues and heavy metal contamination, seriously restricts the growth and quality formation of MPs. Microorganisms, as the major biota in soil, play a critical role in the restoration of the land ecosystem. Rhizosphere microecology directly or indirectly affects the growth and development, metabolic regulation and active ingredient accumulation of MPs. Microbial resources, with the advantages of economic efficiency, harmless to environment and non-toxic to organisms, have been recommended as a promising alternative to conventional fertilizers and pesticides. The introduction of beneficial microbes promotes the adaptability of MPs to adversity stress by enhancing soil fertility, inhibiting pathogens and inducing systemic resistance. On the other hand, it can improve the medicinal quality by removing soil pollutants, reducing the absorption and accumulation of harmful substances and regulating the synthesis of secondary metabolites. The ecological and economic benefits of the soil microbiome in agricultural practices are increasingly recognized, but the current understanding of the interaction between soil conditions, root exudates and microbial communities and the mechanism of rhizosphere microecology affecting the secondary metabolism of MPs is still quite limited. More research is needed to investigate the effects of the microbiome on the growth and quality of different medicinal species. Therefore, the present review summarizes the main soil issues in medicinal plant cultivation, the functions of microbes in soil remediation and plant growth promotion and the potential mechanism to further guide the use of microbial resources to promote the ecological cultivation and sustainable development of MPs.

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Foliar application of KNO3 modulates the biomass yield, nutrient uptake and accumulation of secondary metabolites of Stevia rebaudiana under saline conditions

Cited by 27 publications

References 57 publications

Interactive effect of potassium and spermidine protects growth, photosynthesis and chlorophyll biosynthesis in Vigna angularis from salinity induced damage by up-regulating the tolerance mechanisms

Interactive effect of potassium and spermidine protects growth, photosynthesis and chlorophyll biosynthesis in Vigna angularis from salinity induced damage by up-regulating the tolerance mechanisms

Foliar application of nutrients on medicinal and aromatic plants, the sustainable approaches for higher and better production

Contributions of Beneficial Microorganisms in Soil Remediation and Quality Improvement of Medicinal Plants

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