Effects of A. nodosum seaweed extracts on spinach growth, physiology and nutrition value under drought stress

Xu, Chenping; Leskovar, Daniel I.

doi:10.1016/j.scienta.2014.12.004

Cited by 182 publications

(108 citation statements)

References 51 publications

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“…However, in 'Tiburon' cultivar a significant influence of biostimulants on photosynthetic rate was observed only after re-watering. The increase in photosynthesis rate after biostimulant treatment is consistent with the results obtained by Pramod et al (2000) in pepper, Mikiciuk and Dobromilska (2014) in tomato and Xu and Leskovar (2015) in spinach. The biostimulants containing protein hydrolisates affect N and C metabolism (Ertani et al, 2013).…”

Section: Resultssupporting

confidence: 91%

“…The results are inconsistent with the present findings, where application of biostimulants to 'Agassi' cultivar contributed to an increase in transpiration intensity both before and during stress (Table 4). This confirms the observations of Xu and Leskovar (2015), who observed a 42% increase in transpiration rate under drought stress after Ascophyllum nodosum extract was applied. Table 2.…”

Section: Plant Materials and Treatmentssupporting

confidence: 92%

“…No effect of biostimulants on gs value was found during drought stress. The increase in gs after biostimulant application was in agreement with the results of the studies of Xu and Leskovar (2015). According to these authors application of Ascophyllum nodosum under drought stress in spinach resulted in an increase of approximately 71% in stomatal conductance.…”

Section: Plant Materials and Treatmentssupporting

confidence: 87%

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Effect of Biostimulants on Several Physiological Characteristics and Chlorophyll Content in Broccoli under Drought Stress and Re-watering

Kałużewicz

Krzesiński

Spiżewski

et al. 2017

Not Bot Horti Agrobo

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Drought stress is one of the many factors that lead to decreased yield in both quality and quantity. One method to improve plant resistance to this stress is application of biostimulants. The most widely used biostimulants are protein hydrolysates, containing sea algae extract and humus compounds. In the present study, the influence of the amino acids as well as combination of amino acids with Ascophyllum nodosum filtrate on broccoli (Brassica oleracea var. italica) plants cvs. 'Agassi' and 'Tiburon' was investigated. The plants were watered with Ascophyllum nodosum filtrate three days before planting and sprayed three times with amino acids two, four and six weeks after planting. The present results show that biostimulants have a significant effect on both gas exchange and transpiration rate both prior to the application of stress, under drought stress and after re-watering. Biostimulant treatment led to an increase of drought tolerance in both studied cultivars but the final effect depended on cultivar. 'Tiburon' cultivar turned out to be more tolerant to drought stress than 'Agassi'. The application of biostimulants resulted in an increase of photosynthetic rate, stomatal conductance, internal CO 2 concentration and transpiration rate in 'Agassi' cultivar under drought stress. This effect was not observed in 'Tiburon'. The chlorophyll content was higher under drought stress as compared to the value prior to stress in both cultivars.

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Section: Resultssupporting

confidence: 91%

Section: Plant Materials and Treatmentssupporting

confidence: 92%

Section: Plant Materials and Treatmentssupporting

confidence: 87%

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Effect of Biostimulants on Several Physiological Characteristics and Chlorophyll Content in Broccoli under Drought Stress and Re-watering

Kałużewicz

Krzesiński

Spiżewski

et al. 2017

Not Bot Horti Agrobo

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“…The content of chlorophylls (Chl b and total Chl) was not affected by either of the K levels used in this study (375 or 125 mg L −1 ) or by SW application (Table ). Similarly, Xu and Leskovar found that foliar or drench SW applications did not alter the content of different chlorophylls and photosynthetic rate in SW‐treated spinach. However, Craigie reported that plant biostimulants/hormones can alter plant growth by stimulating cell expansion and increasing the photosynthetic rate.…”

Section: Discussionmentioning

confidence: 83%

Effects of Ascophyllum nodosum seaweed extracts on lettuce growth, physiology and fresh‐cut salad storage under potassium deficiency

et al. 2018

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“…In horticultural crops and trees, SWE have been largely used for similar purposes. A. nodosum SWE increased RWC, Fresh Weight, and Dry Weight in spinach (Spinacia oleracea L.) plants under drought stress with some adverse effects on the nutritional value through reduced ferrous ion chelating ability [59]. SWE applied to seedlings of lettuce (Lactuca sativa L.) enhanced cotyledon growth similar to fertilization with potassium [60].…”

Section: Algal Extractsmentioning

confidence: 99%

The role of biostimulants and bioeffectors as alleviators of abiotic stress in crop plants

Oosten

Pepe

Pascale

et al. 2017

Chem. Biol. Technol. Agric.

579

399

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The use of bioeffectors, formally known as plant biostimulants, has become common practice in agriculture and provides a number of benefits in stimulating growth and protecting against stress. A biostimulant is loosely defined as an organic material and/or microorganism that is applied to enhance nutrient uptake, stimulate growth, enhance stress tolerance or crop quality. This review is intended to provide a broad overview of known effects of biostimulants and their ability to improve tolerance to abiotic stresses. Inoculation or application of extracts from algae or other plants have beneficial effects on growth and stress adaptation. Algal extracts, protein hydrolysates, humic and fulvic acids, and other compounded mixtures have properties beyond basic nutrition, often enhancing growth and stress tolerance. Non-pathogenic bacteria capable of colonizing roots and the rhizosphere also have a number of positive effects. These effects include higher yield, enhanced nutrient uptake and utilization, increased photosynthetic activity, and resistance to both biotic and abiotic stresses. While most biostimulants have numerous and diverse effects on plant growth, this review focuses on the bioprotective effects against abiotic stress. Agricultural biostimulants may contribute to make agriculture more sustainable and resilient and offer an alternative to synthetic protectants which have increasingly falling out of favour with consumers. An extensive review of the literature shows a clear role for a diverse number of biostimulants that have protective effects against abiotic stress but also reveals the urgent need to address the underlying mechanisms responsible for these effects.

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Effects of A. nodosum seaweed extracts on spinach growth, physiology and nutrition value under drought stress

Cited by 182 publications

References 51 publications

Effect of Biostimulants on Several Physiological Characteristics and Chlorophyll Content in Broccoli under Drought Stress and Re-watering

Effect of Biostimulants on Several Physiological Characteristics and Chlorophyll Content in Broccoli under Drought Stress and Re-watering

Effects of Ascophyllum nodosum seaweed extracts on lettuce growth, physiology and fresh‐cut salad storage under potassium deficiency

The role of biostimulants and bioeffectors as alleviators of abiotic stress in crop plants

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