Mycorrhizal fungi and growth-promoting bacteria improves fennel essential oil yield under water stress

Alipour, Aliyeh; Rahimi, Mahmood Reza; Hosseini, Seyed Mashaallah; Bahrani, A.

doi:10.1016/j.indcrop.2021.113792

Cited by 14 publications

(10 citation statements)

References 8 publications

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“…For example, increases of cis -thujone in sage ( Salvia officinalis L.), α-terpineol in sweet basil ( Ocimum basilicum ) and marjoram ( Origanum majorana L.), trans-sabinene in marjoram ( O. majorana L.) and hybrid marjoram ( Origanum x majoricum ), and EO yield in fennel ( Foeniculum vulgare Mill.) and geranium ( Pelargonium graveolens ) have variously been observed [ 49 , 51 , 257 , 258 ].…”

Section: Synergistic Effects Of Amf and Other Amendments On Mapsmentioning

confidence: 99%

Significance of Arbuscular Mycorrhizal Fungi in Mitigating Abiotic Environmental Stress in Medicinal and Aromatic Plants: A Review

Israel

Langrand

Fontaine

et al. 2022

Foods

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Medicinal and aromatic plants (MAPs) have been used worldwide for thousands of years and play a critical role in traditional medicines, cosmetics, and food industries. In recent years, the cultivation of MAPs has become of great interest worldwide due to the increased demand for natural products, in particular essential oils (EOs). Climate change has exacerbated the effects of abiotic stresses on the growth, productivity, and quality of MAPs. Hence, there is a need for eco-friendly agricultural strategies to enhance plant growth and productivity. Among the adaptive strategies used by MAPs to cope with the adverse effects of abiotic stresses including water stress, salinity, pollution, etc., their association with beneficial microorganisms such as arbuscular mycorrhizal fungi (AMF) can improve MAPs’ tolerance to these stresses. The current review (1) summarizes the effect of major abiotic stresses on MAPs’ growth and yield, and the composition of EOs distilled from MAP species; (2) reports the mechanisms through which AMF root colonization can trigger the response of MAPs to abiotic stresses at morphological, physiological, and molecular levels; (3) discusses the contribution and synergistic effects of AMF and other amendments (e.g., plant growth-promoting bacteria, organic or inorganic amendments) on MAPs’ growth and yield, and the composition of distilled EOs in stressed environments. In conclusion, several perspectives are suggested to promote future investigations.

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Section: Synergistic Effects Of Amf and Other Amendments On Mapsmentioning

confidence: 99%

Significance of Arbuscular Mycorrhizal Fungi in Mitigating Abiotic Environmental Stress in Medicinal and Aromatic Plants: A Review

Israel

Langrand

Fontaine

et al. 2022

Foods

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“…Carotenoids are pigments with several functions contributing to the antioxidant defense of plants by quenching singlet molecular oxygen and dissipating excess excitation energy in protecting photosystems against water deficit stress conditions [ 39 ]. Decreased total carotenoids with reduced soil moisture stress may be due to the formation of xanthine in the xanthophyll cycle followed by the decomposition of beta-carotene [ 25 ]. AMF samples can accelerate the photosynthesis rate by the antagonistic effect of Na + on chlorophyll biosynthesis, balance nutritional status, and improve phosphorus uptake efficiency, which is crucial for leaf CO 2 assimilation [ 20 ].…”

Section: Discussionmentioning

confidence: 99%

“…The beneficial effect of AMF inoculation on EO accumulation depends on the fungal and host plant species [ 60 ]. The effectiveness of AMF in increasing the production of EOs during soil water storage reduction has been illustrated in several aromatic species such as Pelargonium graveolens [ 20 ], Foeniculum vulgare [ 25 , 48 ], Lavandula officinalis , Rosmarinus officinalis , and Thymus vulgaris [ 61 ].…”

Section: Discussionmentioning

confidence: 99%

“…The fresh root systems were washed with KOH (10% w/v ) at 95 °C for 1 h, acidified with HCl (1% w/v ) for 1 h, and then stained with 0.05% w/v trypan blue in lactoglycerol (8:1:1 lactic acid, glycerol, and water) for 20 min. Finally, the percentage of mycorrhizal root infection was measured according to the gridline intersection method of Alipour et al [ 25 ].…”

Section: Methodsmentioning

confidence: 99%

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Mycorrhizal Colonization Modulates the Essential Oil Profile and Enzymatic and Non-Enzymatic Antioxidants to Mitigate the Adverse Effects of Water Deficit in Salvia subg. Perovskia

Afshari

Rahimmalek

Sabzalian

et al. 2022

Biology

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Among traditional Iranian herbs, Perovskia species (a subgenus of Salvia), while being valued ornamentals, are also studied for numerous potential pharmacological and therapeutic aspects. The current study was conducted to assess the effectiveness of two species of arbuscular mycorrhizal fungi (AMF), Funneliformis mosseae and Rhizophagus intraradices, separately and in combination, in terms of the essential oil content and compositions along with the enzymatic and non-enzymatic antioxidants in Salvia abrotanoides and S. yangii in response to three levels of irrigation, including 100% FC as well-watered, 75% FC (moderate irrigation deficit), and 50% FC (severe irrigation deficit). In both species, essential oil content, enzyme antioxidant activities, total phenolics, and flavonoids were increased significantly with the severity of stress; this increase was more pronounced in mycorrhizal inoculated herbs. Furthermore, leaf phosphorus concentration, relative water content, chlorophylls a and b, and total carotenoids decreased in parallel with reducing soil moisture; albeit, AMF inoculation improved the stress symptoms under increasing severity of water restriction compared with their control conditions. In addition, the percentage of root colonization was positively correlated with the relative water content (RWC) and leaf phosphorus concentration. Taking into account the essential oil groups, AMF colonization elevated some essential oil components, such as oxygenated monoterpenes, 1,8-cineol, camphor, and borneol, whereas the main sesquiterpenes, including E-β-caryophyllene and α-humulene, remarkably decreased. Taken together, these findings highlighted the role of symbiosis with AMFs in increasing the tolerance of water deficit stress in S. abrotanoides and S. yangii and improving their essential oil composition.

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“…using sustainable approaches [21]. To achieve these, chemical fertilization is practiced in the cultivation of herbal plants which, however, due to challenges such as cost and harmful impacts on the biomass, yield and valuable metabolites are avoided in medicinal plant production systems [22]. The application of low-cost natural resources and beneficial microbiological formulations (biofertilizers), especially those prepared from PGPR group organisms, either alone or in synergism with other agronomically beneficial microbiota, in this regard have been reported to optimize the production of good quality medicinal plants under both conventional and stressful conditions without depending on synthetic fertilizers [23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Bioprospecting Plant Growth Promoting Rhizobacteria for Enhancing the Biological Properties and Phytochemical Composition of Medicinally Important Crops

et al. 2022

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Traditionally, medicinal plants have long been used as a natural therapy. Plant-derived extracts or phytochemicals have been exploited as food additives and for curing many health-related ailments. The secondary metabolites produced by many plants have become an integral part of human health and have strengthened the value of plant extracts as herbal medicines. To fulfil the demand of health care systems, food and pharmaceutical industries, interest in the cultivation of precious medicinal plants to harvest bio-active compounds has increased considerably worldwide. To achieve maximum biomass and yield, growers generally apply chemical fertilizers which have detrimental impacts on the growth, development and phytoconstituents of such therapeutically important plants. Application of beneficial rhizosphere microbiota is an alternative strategy to enhance the production of valuable medicinal plants under both conventional and stressed conditions due to its low cost, environmentally friendly behaviour and non-destructive impact on fertility of soil, plants and human health. The microbiological approach improves plant growth by various direct and indirect mechanisms involving the abatement of various abiotic stresses. Given the negative impacts of fertilizers and multiple benefits of microbiological resources, the role of plant growth promoting rhizobacteria (PGPR) in the production of biomass and their impact on the quality of bio-active compounds (phytochemicals) and mitigation of abiotic stress to herbal plants have been described in this review. The PGPR based enhancement in the herbal products has potential for use as a low cost phytomedicine which can be used to improve health care systems.

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Mycorrhizal fungi and growth-promoting bacteria improves fennel essential oil yield under water stress

Cited by 14 publications

References 8 publications

Significance of Arbuscular Mycorrhizal Fungi in Mitigating Abiotic Environmental Stress in Medicinal and Aromatic Plants: A Review

Significance of Arbuscular Mycorrhizal Fungi in Mitigating Abiotic Environmental Stress in Medicinal and Aromatic Plants: A Review

Mycorrhizal Colonization Modulates the Essential Oil Profile and Enzymatic and Non-Enzymatic Antioxidants to Mitigate the Adverse Effects of Water Deficit in Salvia subg. Perovskia

Bioprospecting Plant Growth Promoting Rhizobacteria for Enhancing the Biological Properties and Phytochemical Composition of Medicinally Important Crops

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