Enhancing growth, phytochemical constituents and aphid resistance capacity in cabbage with foliar application of eckol – a biologically active phenolic molecule from brown seaweed

Rengasamy, Kannan R.R.; Kulkarni, Manoj G.; Pendota, S.C.; Staden, J. Van

doi:10.1016/j.nbt.2015.11.002

Cited by 54 publications

(19 citation statements)

References 34 publications

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“…Similar results have been observed after root inoculation with several plant growth promoting bacteria (PGPR) in broccoli (Brassica oleracea 'italica') using Bacillus cereus, Brevibacillus reuszeri, and Rhizobium rubi [105], and tomato under non-stressful conditions treated with PGPRs belonging to the genera Bacillus, Pseudomonas and Azotobacter [106], in strawberry (Fragaria ananassa) with five PGPRs (Bacillus subtilis, Bacillus atrophaeus, Bacillus spharicus subgroup, Staphylococcus kloosii, and Kocuria erythromyxa) [107] and also in lettuce grown under salt stress after inoculation with Serratia sp., Rhizobium sp., and Azospirillum [108,109]. Brown seaweeds are widely used as a biostimulant products to improve plant growth, and recently a phenolic compound isolated from Ecklonia maxima showed stimulatory effects in cabbage plants, improving photosynthetic pigments concentration, phytochemicals and myrosinase activity [110].…”

Section: Effect Of Biostimulants On Chlorophyll Content Photosynthesmentioning

confidence: 99%

Biostimulants Application in Horticultural Crops under Abiotic Stress Conditions

2019

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Abiotic stresses strongly affect plant growth, development, and quality of production; final crop yield can be really compromised if stress occurs in plants’ most sensitive phenological phases. Additionally, the increase of crop stress tolerance through genetic improvements requires long breeding programmes and different cultivation environments for crop performance validation. Biostimulants have been proposed as agronomic tools to counteract abiotic stress. Indeed, these products containing bioactive molecules have a beneficial effect on plants and improve their capability to face adverse environmental conditions, acting on primary or secondary metabolism. Many companies are investing in new biostimulant products development and in the identification of the most effective bioactive molecules contained in different kinds of extracts, able to elicit specific plant responses against abiotic stresses. Most of these compounds are unknown and their characterization in term of composition is almost impossible; therefore, they could be classified on the basis of their role in plants. Biostimulants have been generally applied to high-value crops like fruits and vegetables; thus, in this review, we examine and summarise literature on their use on vegetable crops, focusing on their application to counteract the most common environmental stresses.

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Section: Effect Of Biostimulants On Chlorophyll Content Photosynthesmentioning

confidence: 99%

Biostimulants Application in Horticultural Crops under Abiotic Stress Conditions

2019

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“…Cabbage ( Brassica oleracea var. capitata ) is regarded as one the world's leading vegetable crops that is rich in vitamins, anticarcinogenic glucosinolates, and antioxidant metabolites as well as amino acids (Rengasamy et al, 2016 ). On the other hand, Swiss chard ( B. vulgaris L.) spread from Europe, where it has been cultivated since classical antiquity, to the rest of the world (Pyo et al, 2004 ).…”

Section: Introductionmentioning

confidence: 99%

Determination of Mineral Constituents, Phytochemicals and Antioxidant Qualities of Cleome gynandra, Compared to Brassica oleracea and Beta vulgaris

et al. 2018

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The study compared mineral, chemical and antioxidant qualities of Cleome gynandra, a wild leafy vegetable, with two widely consumed commercial vegetables, Brassica oleracea and Beta vulgaris. Mineral nutrients were quantified with inductively coupled plasma mass spectrometry (ICP-MS), phenolic compounds using ultra-high performance liquid chromatography coupled to a mass spectrometer (UHPLC-MS) and β-carotene and vitamin C using high performance liquid chromatography with a photodiode array detector (HPLC-PDA). The antioxidant potential was evaluated using 2,2–diphenyl−1–picryl hydrazyl (DPPH) and oxygen radical absorbance capacity (ORAC) assays. Cleome gynandra had highest concentrations of phosphorus, potassium, calcium, iron, zinc, ascorbic acid, total phenolics, and flavonoids; whereas sodium, magnesium, manganese, copper and β-carotene were higher for B. vulgaris. The significantly higher antioxidant activity (P ≤ 0.05) exhibited by C. gynandra in comparison to the two commercial vegetables may be due to its significantly high levels of vitamin C and phenolic acids. These findings on the mineral, chemical and antioxidant properties of C. gynandra provide compelling scientific evidence of its potential in adding diversity to the diet and contributing toward the daily nutritional requirements of millions of people for food and nutritional security.

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“…Eckol, a phlorotannin obtained from Ecklonia maxima, was shown to stimulate plant growth and seed germination [ 121 ]. Foliar applications of eckol induced myrosinase activity in treated cabbage and stimulated natural defense responses related to aphid infestation by regulating the glucosinolate-myrosinase system [ 62 ]. The use of phenolics as constituents of biostimulant formulations for plant disease management needs to be further explored in much more detail.…”

Section: Bioactive Compounds Present In Different Seaweeds and Thementioning

confidence: 99%

Seaweed-Based Compounds and Products for Sustainable Protection against Plant Pathogens

et al. 2021

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Sustainable agricultural practices increasingly demand novel, environmentally friendly compounds which induce plant immunity against pathogens. Stimulating plant immunity using seaweed extracts is a highly viable strategy, as these formulations contain many bio-elicitors (phyco-elicitors) which can significantly boost natural plant immunity. Certain bioactive elicitors present in a multitude of extracts of seaweeds (both commercially available and bench-scale laboratory formulations) activate pathogen-associated molecular patterns (PAMPs) due to their structural similarity (i.e., analogous structure) with pathogen-derived molecules. This is achieved via the priming and/or elicitation of the defense responses of the induced systemic resistance (ISR) and systemic acquired resistance (SAR) pathways. Knowledge accumulated over the past few decades is reviewed here, aiming to explain why certain seaweed-derived bioactives have such tremendous potential to elicit plant defense responses with considerable economic significance, particularly with increasing biotic stress impacts due to climate change and the concomitant move to sustainable agriculture and away from synthetic chemistry and environmental damage. Various extracts of seaweeds display remarkably different modes of action(s) which can manipulate the plant defense responses when applied. This review focuses on both the similarities and differences amongst the modes of actions of several different seaweed extracts, as well as their individual components. Novel biotechnological approaches for the development of new commercial products for crop protection, in a sustainable manner, are also suggested.

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Enhancing growth, phytochemical constituents and aphid resistance capacity in cabbage with foliar application of eckol – a biologically active phenolic molecule from brown seaweed

Cited by 54 publications

References 34 publications

Biostimulants Application in Horticultural Crops under Abiotic Stress Conditions

Biostimulants Application in Horticultural Crops under Abiotic Stress Conditions

Determination of Mineral Constituents, Phytochemicals and Antioxidant Qualities of Cleome gynandra, Compared to Brassica oleracea and Beta vulgaris

Seaweed-Based Compounds and Products for Sustainable Protection against Plant Pathogens

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