Phytotoxic activity of kiwifruit leaves and isolation of a phytotoxic substance

Okada, S.; Iwasaki, Arihiro; Kataoka, Isao; Suenaga, Kiyotake; Kato‐Noguchi, Hisashi

doi:10.1016/j.scienta.2019.02.029

Cited by 12 publications

(12 citation statements)

References 17 publications

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“…Moreover, based on the I 50 values, the inhibitory activity of garcienone was greater against the roots, compared with the shoots. Previous reports also confirmed that root growth is more sensitive to allelochemicals than shoot growth [34,35]. Indeed, the identification of allelopathic substances from G. xanthochymus may lead to developing new bioherbicides by using allelopathic potency of the compound and thus can play a pivotal role in weed management in a more environmentally sound way.…”

Section: Discussionmentioning

confidence: 70%

Garcienone, a Novel Compound Involved in Allelopathic Activity of Garcinia Xanthochymus Hook

Rob

Iwasaki

Suzuki

et al. 2019

Plants

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Plants are sources of diversified allelopathic substances that can be investigated for use in eco-friendly and efficient herbicides. An aqueous methanol extract from the leaves of Garcinia xanthochymus exhibited strong inhibitory activity against barnyard grass (Echinochloa crus-galli (L.) P. Beauv.), foxtail fescue (Vulpia myuros (L.) C.C.), alfalfa (Medicago sativa L.), and cress (Lepidium sativum L.), and appears to be a promising source of allelopathic substances. Hence, bio-activity guided purification of the extract through a series of column chromatography steps yielded a novel compound assigned as garcienone ((R, E)-5-hydroxy-5-((6S, 9S)-6-methyl-9-(prop-13-en-10-yl) tetrahydrofuran-6-yl) pent-3-en-2-one). Garcienone significantly inhibited the growth of cress at a concentration of 10 μM. The concentrations resulting in 50% growth inhibition (I50) of cress roots and shoots were 120.5 and 156.3 μM, respectively. This report is the first to isolate and identify garcienone and to determine its allelopathic potential.

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Section: Discussionmentioning

confidence: 70%

Garcienone, a Novel Compound Involved in Allelopathic Activity of Garcinia Xanthochymus Hook

Rob

Iwasaki

Suzuki

et al. 2019

Plants

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“…The combination of bioassay and analytical methods can be used to identify phytotoxins and evaluate their toxicity on target plants. Okada et al [16] assessed the phytotoxic effects of kiwifruit leaf extracts on different plant species and isolated an epicatechin compound using bioassay and chromatography. Scognamiglio et al [50] conducted a bioassay assessment of the phytotoxic extracts and phytotoxins from the Mediterranean plant species Triticum durum, Triticum ovatum, and Avena fatua.…”

Section: Bioassay Methodsmentioning

confidence: 99%

“…High performance liquid chromatography (HPLC) (-)-Epicatechin Actinidia deliciosa [16] Methyl gallate Caesalpinia mimosoides [64] Salsolol and balanochalcone Ambrosia salsola [87] Indole-3-carboxaldehyde and (6R,9S)-3-oxo-a-ionol Asystasia gangetica [52] Phenols, flavnoids and tannins Capparis cartilaginea [44] Quercetin, chlorogenic acid, p-coumaric acid, m-coumaric acid, benzoic acid, caffeic acid, syringic acid, vanillic acid, ferulic acid, cinnamic acid, and gallic acid Brassica napus [29] Reverse-phase HPLC 5,7-dihydroxyphthalide and altechromone Rumex maritimus [62] Ultrahigh-pressure liquid chromatography mass spectrometry (UHPLC/MS)…”

Section: Target Species Referencementioning

confidence: 99%

“…To date, a number of the antifungal, antimicrobial, and antibacterial effects of these compounds have been reported by various researchers [9][10][11][12][13]. Phytotoxins include various secondary metabolites and biochemical constituents produced by different plant parts such as leaves, stems, roots, flowers, seeds, fruits, and so on [14][15][16][17]. The most essential phytotoxins identified are phenolic compounds [18,19], quinones [20], terpenoids [21], alkaloids [22], glycosides [23], and flavonoids [24], The disruption of photosystems I and II, and the inhibition of chlorophyll synthesis, mitosis, and amino acid synthesis are the main modes of action associated with phytotoxins [25].…”

Section: Introductionmentioning

confidence: 99%

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Assessment of Phytotoxins Using Different Technologies

Mehdizadeh

Mushtaq

Siddiqui

et al. 2021

Curr. Appl. Sci. Technol.

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Nowadays, phytotoxins as natural compounds extracted from different plants are widely used as growth regulators or growth inhibitors for other plants or microorganisms. Furthermore, phytotoxin study may lead to the synthesis of new products with various biological activities. Therefore, the detection and identification of these compounds is very important in the study of their effects on living organisms and the environment. Different methods have been used for the identification and characterization of phytotoxins. This study is devoted to reviewing various methods for the extraction, purification, detection, and identification of phytotoxins from different plant species. The most common methods for detecting plant toxins include a variety of bioassays (plant, cell, and enzyme assay) and the application of a wide range of chemical and analytical methods (especially chromatographic techniques). Both types of methods will be discussed in more details. Moreover, applications of these methods in the study of phytotoxin interaction from recent studies are exemplified to aid understanding f these interactions. It can be concluded that bioassay and analytical methods are the two fundamental techniques for phytotoxin analysis. In addition, new advanced techniques that can enable better understanding of phytotoxins and their functions and which are based on biochemistry, robotics, biosensors, nanotechnology, and enzyme-based methods will be developed in the near future.

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“…(-)-Catechin ( 13 ) and (-)-epicatechin ( 14 ) inhibited the growth of several other plant species [ 64 , 72 ]. Inhibitory activity of (-)-catechin was more active than (+)-catechin, and (-)-catechin was considered to act as an allelochemical for invasive plant species, Centaurea stoebe L. to succeed its invasion in North America.…”

Section: Allelochemicals Found In Knotweedsmentioning

confidence: 99%

Allelopathy of Knotweeds as Invasive Plants

Kato‐Noguchi

2021

Plants

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Perennial herbaceous Fallopia is native to East Asia, and was introduced to Europe and North America in the 19th century as an ornamental plant. Fallopia has been spreading quickly and has naturalized in many countries. It is listed in the world’s 100 worst alien species. Fallopia often forms dense monospecies stands through the interruption of the regeneration process of indigenous plant species. Allelopathy of Japanese knotweed (Fallopia japonica), giant knotweed (Fallopia sachalinensis), and Bohemian knotweed (Fallopia x bohemica) has been reported to play an essential role in its invasion. The exudate from their roots and/or rhizomes, and their plant residues inhibited the germination and growth of some other plant species. These knotweeds, which are non-mycorrhizal plants, also suppressed the abundance and species richness of arbuscular mycorrhizal fungi (AMF) in the rhizosphere soil. Such suppression was critical for most territorial plants to form the mutualism with AMF, which enhances the nutrient and water uptake, and the tolerance against pathogens and stress conditions. Several allelochemicals such as flavanols, stilbenes, and quinones were identified in the extracts, residues, and rhizosphere soil of the knotweeds. The accumulated evidence suggests that some of those allelochemicals in knotweeds may be released into the rhizosphere soil through the decomposition process of their plant parts, and the exudation from their rhizomes and roots. Those allelochemicals may inhibit the germination and growth of native plants, and suppress the mycorrhizal colonization of native plants, which provides the knotweeds with a competitive advantage, and interrupts the regeneration processes of native plants. Therefore, allelopathy of knotweeds may contribute to establishing their new habitats in the introduced ranges as invasive plant species. It is the first review article focusing on the allelopathy of knotweeds.

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Phytotoxic activity of kiwifruit leaves and isolation of a phytotoxic substance

Cited by 12 publications

References 17 publications

Garcienone, a Novel Compound Involved in Allelopathic Activity of Garcinia Xanthochymus Hook

Garcienone, a Novel Compound Involved in Allelopathic Activity of Garcinia Xanthochymus Hook

Assessment of Phytotoxins Using Different Technologies

Allelopathy of Knotweeds as Invasive Plants

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