Acclimation of brown seaweeds in an outdoor cultivation system and their cytokinin-like activity

Friedländer, Michael; Ben‐Amotz, Ami

doi:10.1007/bf00023376

Cited by 7 publications

(3 citation statements)

References 16 publications

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“…Other OA have also proved effective when utilised in seed priming. Improved germination rates were seen in radish after seeds were treated with seaweed extract (Friedlander and Ben-Amotz 1990), and enhanced root elongation in germinating maize was noted by Eyheraguibel et al (2008) who used humic substances as a seed treatment.…”

Section: Organic Amendments Applied To Stimulate Plant Growthmentioning

confidence: 95%

Use and understanding of organic amendments in Australian agriculture: a review

2011

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A wide range of organic amendments (OA) is currently available to Australian farmers. These products have numerous agronomic applications, including the supply of plant nutrients, control of pests and diseases, and in management of soil health. Several of these products are also used in contaminated and degraded land remediation. The most commonly identifiable groups of OA in Australia are composts, compost teas, vermicasts, humic substances, meat, blood and bone meal, fish hydrolysates, seaweed extracts, bio-inoculants, biodynamic products, and biochars. Many of these OA contain nutrients within organic molecular structures; these nutrients are usually not immediately available to plants and must first be mineralised. Mineralisation often occurs as OA are consumed by microbes, thereby stimulating soil microbial activity. The application of OA such as bio-inoculants, humic substances, and seaweed extracts can potentially stimulate crop growth and development through the actions of plant growth-promoting hormones, including cytokinins, auxins, and gibberellins. Yet despite these apparent benefits, the widespread adoption of OA in Australia has been limited, due in part to the high application rates required to produce agronomic benefits, a lack of consistency in the composition of some products, a poor public perception of their utility, and a lack of unbiased scientific research into the agricultural potential of these products.

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Section: Organic Amendments Applied To Stimulate Plant Growthmentioning

confidence: 95%

Use and understanding of organic amendments in Australian agriculture: a review

2011

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“…MDPI and/or the editor(s) disclaim responsibility for any injury to people or property resulting from any ideas, methods, instructions, or products referred to in the content. 2 cytokinin, gibberellin, and abscisic acid are mostly present, along with additional active ingredients such sugar alcohol, betaine, seaweed polysaccharide, and phenolic compounds [10,11], which have been used in agriculture for many years [12,13]. The enhanced growth-promoting action of seaweed extracts on plants can be attributed to a combination of active compounds that act either directly or by modulating gene expression in the plant.…”

Section: Introductionmentioning

confidence: 99%

Influence of Spirulina Extract on Physiological, Qualitative, and Productive Traits of Four Sugarcane Genotypes

Ghallab,

Bukhari,

Salem

et al. 2024

Preprint

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The study was conducted at El-Sabahia Research Station (latitude 31°12'N, longitude 29°58'E), Alexandria, Egypt, to evaluate the effect of Spirulina platensis algae extract on the growth, yield, and juice quality of four sugarcane genotypes during the 2020/2021 and 2021/2022 seasons. The sugarcane genotypes tested (G.T. 54-9, G. 2003-47, G. 84-47, and G. 2004-27) were treated with four concentrations (0, 0.1, 0.2, and 0.3%) of Spirulina algae extract (SE) during their development as plant cane and first ratoon crops. At harvest, the growth, physiological, and juice quality characteristics were documented, while chlorophyll content was measured 210 days after sowing. Spraying canes with 0.2% of SE was the most effective treatment in enhancing all of the evaluated characteristics compared to those left without SE. Cane yield was more closely correlated with stalk weight (r = 0.88), followed by leaf area index (r = 0.82), chlorophyll content (r = 0.82), stalk length (r = 0.76), and number of tillers (r = 0.73), while recoverable sugar yield was closely correlated (P < 0.01) with sugar content% (r = 0.76).

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“…Seaweed extracts (SEs) are a kind of biostimulant extracted from seaweed (especially brown algae) that can promote crop growth, improve crop quality, and enhance crop stress resistance. SE mainly contain natural hormones, such as auxin, cytokinin, gibberellin, abscisic acid, and other active substances such as seaweed polysaccharide, sugar alcohol, betaine, and phenolic compounds ( Crouch and van Staden, 1993 ; Jardin, 2012 ; Battacharyya et al, 2015 ), which have been used in agriculture for many years ( Friedlander and Ben-Amotz, 1990 ; Mukherjee and Patel, 2020 ). The studies have shown that SEs were beneficial to soil improvement and crop growth.…”

Section: Introductionmentioning

confidence: 99%

Effects of Seaweed Extracts on the Growth, Physiological Activity, Cane Yield and Sucrose Content of Sugarcane in China

et al. 2021

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Seaweed extracts (SEs) have been widely used as biostimulants in crop management due to their growth-promoting and stress-resistant effects. To date, there are few reports of the effect of SEs on sucrose content and cane yield. Here, we conducted field experiments for three consecutive growth seasons (2017∼2019) in two areas (Suixi and Wengyuan) of China, to investigate the yield and sugar content of sugarcane in response to SE treatment at different growth stages. The results showed that spraying SEs once at seedling (S), early elongation (E), and early mature (M) stages, respectively, once at S and E stages, respectively, or once at the S stage increased the cane yield by 9.23, 9.01, and 3.33%, respectively, implying that SEs application at the early elongation stage played a vital role in promoting sugarcane growth. Photosynthetic parameters and nutrient efficiency analysis showed that spraying SEs at S and E stages enhanced the net photosynthetic rate, transpiration rate, and water use efficiency, and increased N, P, or K utilization efficiency, compared with those of the control. Notably, cane yield increasing rate of SEs in 2017 and 2018 were higher than those in 2019 in Wengyuan but lower than those in 2019 in Suixi. Interestingly, the total rainfall and monthly average rainfall in 2017 and 2018 were lower than those in 2019 in Wengyuan but higher than those in 2019 in Suixi. The results suggested that the yield increasing rate of SEs on sugarcane was better in less rainfall years. The sucrose content of sugarcane showed no difference between spraying SEs at the M stage alone or at the three growth stages but was higher than those of SE treatments at S and/or E stages. Enzyme activity analysis showed that spraying SEs at the M stage increased the activity of sucrose phosphate synthase activity by 9.14% in leaves and 15.16% in stems, and decreased soluble acid invertase activity in stems by 16.52%, which contributed to the sucrose increase of 5.00%. The above results suggested that SEs could increase cane yield and promote sucrose accumulation in sugarcane. The yield increasing effect was more obvious under conditions of drought stress.

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Acclimation of brown seaweeds in an outdoor cultivation system and their cytokinin-like activity

Cited by 7 publications

References 16 publications

Use and understanding of organic amendments in Australian agriculture: a review

Use and understanding of organic amendments in Australian agriculture: a review

Influence of Spirulina Extract on Physiological, Qualitative, and Productive Traits of Four Sugarcane Genotypes

Effects of Seaweed Extracts on the Growth, Physiological Activity, Cane Yield and Sucrose Content of Sugarcane in China

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