Biostimulants alleviate water deficit stress and enhance essential oil productivity: a case study with savory

Rezaei‐Chiyaneh, Esmaeil; Mahdavikia, Hassan; Alipour, Hadi; Dolatabadian, Aria; Battaglia, Martín Leonardo; Maitra, Sagar; Harrison, Matthew T.

doi:10.1038/s41598-022-27338-w

Cited by 12 publications

(6 citation statements)

References 52 publications

(53 reference statements)

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“…); they improve plant growth through the induction of hormones biosynthesis and increase nutrients availability through chelation and cotransportation of nutrients to plants [75]. In contrast to our study, Rezaei-Chiyaneh et al [49] suggested that biostimulants based on amino acids were more effective than those contained humic acids against water deficit stress and significantly improved essential oil yield of savory plants. It seems that apart from biostimulant composition, the application method may also affect the effectiveness of the biostimulatory products, since according to Elansary et al [51], a varied effect was recorded for seaweed extracts on mint plants depending on the application method (e.g., soil drench or foliar application).…”

Section: Discussioncontrasting

confidence: 89%

“…Moreover, arbuscular mycorrhizal fungi (AMF), ectomycorrhizal fungi (ECM) and root-associated plant-growth-promoting rhizobacteria (PGPR) are symbiotic partners that have been shown to benefit plant and soil health in stressful environments [46]. Furthermore, a lot of investigation has been carried out on the effect of different biostimulants' application on crops, such as aromatic and medicinal plants that are grown under abiotic stress conditions, such as water deficit [7,[47][48][49][50]. In particular, Ascophyllum nodosum (L.) extracts were beneficial in oil content, while a significant effect on oil composition and its antibacterial properties was also recorded [51].…”

Section: Introductionmentioning

confidence: 99%

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Biostimulant Application Alleviates the Negative Effects of Deficit Irrigation and Improves Growth Performance, Essential Oil Yield and Water-Use Efficiency of Mint Crop

Chaski,

Giannoulis,

Alexopoulos

et al. 2023

Agronomy

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The scarcity of water is limiting crop production and is one of the most important stressors that severely affects crop yield, and it may also decrease the quality of the final products. Most of the medicinal and aromatic plants are considered resilient to water stress and constitute a sustainable choice for crop production in arid and semiarid conditions. In the present study, we examined the effect of scheduled deficit irrigation (e.g., I1: 40% of field capacity); I2: 70% of field capacity; and I3: 100% of field capacity) combined with biostimulant application (four different products that consisted of nitrogenous compounds and carboxylic acids (M1); nitrogenous compounds and seaweed extracts (M2); humic and fulvic acids and seaweed extracts (M3); and CaO, SiO2, calcium mobilization and translocation factor and microminerals (M4)) on crop performance and essential oil production of mint plants (Mentha arvensis L.). Our aim was to define an irrigation regime that increases water-use efficiency and the biostimulant products that alleviate water stress effects. Our results indicate that moderate deficit irrigation (I2 treatment) and biostimulants that contained seaweed extracts and nitrogenous compounds and humic and fulvic acids (M2 and M3 treatments, respectively) significantly improved yield parameters in terms of fresh and dry herb yield and essential oil production. Moreover, the same biostimulant treatments significantly increased water-use efficiency of mint crops based on the various yield parameters tested in this study. In conclusion, our results indicate that selection of proper biostimulatory products may allow to apply deficit irrigation regimes in mint cultivation without compromising the crop performance in terms of both biomass production and essential oil yield. Therefore, the combination of these agronomic tools could facilitate water saving strategies in arid and semiarid regions and contribute to the sustainable management of water resources.

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Section: Discussioncontrasting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Biostimulant Application Alleviates the Negative Effects of Deficit Irrigation and Improves Growth Performance, Essential Oil Yield and Water-Use Efficiency of Mint Crop

Chaski,

Giannoulis,

Alexopoulos

et al. 2023

Agronomy

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“…4). Such HA-induced accumulation of osmolytes has also been shown in savory [109] and greenhouse-grown sorghum during seedling and reproductive growth [71,74]. The PCA biplot supported these findings and revealed a strong association of these osmolytes with HA + D 2 treatment in maize and sorghum (Fig.…”

Section: Discussionsupporting

confidence: 72%

Mitigation of drought stress in maize and sorghum by humic acid: differential growth and physiological responses

Abu-Ria,

Elghareeb,

Shukry

et al. 2024

BMC Plant Biol

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Background Drought is a major determinant for growth and productivity of all crops, including cereals, and the drought-induced detrimental effects are anticipated to jeopardize world food security under the ongoing global warming scenario. Biostimulants such as humic acid (HA) can improve drought tolerance in many cereals, including maize and sorghum. These two plant species are genetically related; however, maize is more susceptible to drought than sorghum. The physiological and biochemical mechanisms underlying such differential responses to water shortage in the absence and presence of HA, particularly under field conditions, are not fully understood. Results Herein, the effects of priming maize and sorghum seeds in 100 mg L−1 HA on their vegetative growth and physiological responses under increased levels of drought (100%, 80%, and 60% field capacity) were simultaneously monitored in the field. In the absence of HA, drought caused 37.0 and 58.7% reductions in biomass accumulation in maize compared to 21.2 and 32.3% in sorghum under low and high drought levels, respectively. These responses were associated with differential retardation in overall growth, relative water content (RWC), photosynthetic pigments and CO2 assimilation in both plants. In contrast, drought increased root traits as well as H2O2, malondialdehyde, and electrolyte leakage in both species. HA treatment significantly improved the growth of both plant species under well-watered and drought conditions, with maize being more responsive than sorghum. HA induced a 29.2% increase in the photosynthetic assimilation rate in maize compared to 15.0% in sorghum under high drought level. The HA-promotive effects were also associated with higher total chlorophyll, stomatal conductance, RWC, sucrose, total soluble sugars, total carbohydrates, proline, and total soluble proteins. HA also reduced the drought-induced oxidative stress via induction of non-enzymic and enzymic antioxidants at significantly different extents in maize and sorghum. Conclusion The current results identify significant quantitative differences in a set of critical physiological biomarkers underlying the differential responses of field-grown maize and sorghum plants against drought. They also reveal the potential of HA priming as a drought-alleviating biostimulant and as an effective approach for sustainable maize and sorghum production and possibly other crops in drought-affected lands.

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“…Water stress triggers plants to have lower evapotranspiration, leading to water stress symptoms and modifications in biochemical and physiological processes (Parkash and Singh, 2020). Water scarcity affects plant growth and development, as well as agri-food production, all over the world (Rezaei-Chiyaneh et al, 2023). Exposure to water deficit can here be defined as a lack of plantavailable water for a sustained period.…”

Section: The Extent Of Water Deficit As a Potential Stress Factormentioning

confidence: 99%

Phytohormone-Based Biostimulants as an Alternative Mitigating Strategy for Horticultural Plants Grown Under Adverse Multi-Stress Conditions: Common South African Stress Factors

Khetsha,

Van der Watt,

Masowa

et al. 2024

Caraka Tani J. Sustain. Agric.

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Worldwide, it has been recorded extensively that plants are subjected to severe abiotic and biotic stressors. The scientific research community has widely reported that multi-abiotic stressors cause horticultural crop losses, accounting for at least 50 to 70% of the crop yield and quality losses. Therefore, this review focused on the detrimental effects caused by abiotic stress factors occurring in single-, combined- and multi-cell stresses on horticultural plants worldwide, along with the best production systems practices for mitigation during and post-single and combined abiotic or multi-stress damages. A conclusion and recommendation could be reached using the pool of research material, which constituted research articles, reviews, book chapters, thesis, research short communications and industrial short communications from at least twenty-five years ago. Findings showed that some of the leading abiotic stresses are single- and combined abiotic stressors like water deficit, salinity, soil pH, phosphate deficiency, wounding, soil density and pot size. Established commercial and smallholder farmers are globally adapting to plant growth regulators and biostimulants as part of their production systems. However, as much as the effectiveness of biostimulants containing humic acids, algal extracts, plant growth-promoting microorganisms and phytohormones has been reported to promote plant development under multi-stress, only a few studies are focusing on organic phytohormone-based biostimulants on horticultural crops grown under adverse multi stress factoring. In conclusion, the review recommends alternative solutions for emerging South African farmers and growers who cannot afford agricultural insurance options and energy alternatives on the common single- and combined abiotic- or multi-stress-factors.

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Biostimulants alleviate water deficit stress and enhance essential oil productivity: a case study with savory

Cited by 12 publications

References 52 publications

Biostimulant Application Alleviates the Negative Effects of Deficit Irrigation and Improves Growth Performance, Essential Oil Yield and Water-Use Efficiency of Mint Crop

Biostimulant Application Alleviates the Negative Effects of Deficit Irrigation and Improves Growth Performance, Essential Oil Yield and Water-Use Efficiency of Mint Crop

Mitigation of drought stress in maize and sorghum by humic acid: differential growth and physiological responses

Phytohormone-Based Biostimulants as an Alternative Mitigating Strategy for Horticultural Plants Grown Under Adverse Multi-Stress Conditions: Common South African Stress Factors

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