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Artículos de revistas sobre el tema "Plant growth inhibiting substances"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 1 de agosto de 2024

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1

Šimonová, E., M. Henselová, and P. Zahradník. "Benzothiazole derivatives substituted in position 2 as biologically active substances with plant growth regulation activity." Plant, Soil and Environment 51, No. 11 (November 20, 2011): 496–505. http://dx.doi.org/10.17221/3623-pse.

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Thirteen of the new synthetized 2-R substituted benzothiazole derivatives have been tested for plant growth regulatory (PGR) activity. The effect on growth elongation was studied on wheat coleoptile segments Triticum aestivum&nbsp;L. cv. Blava, and on the hypocotyl and roots in cucumber Cucumis sativum L. cv. Evita. The formation and number of adventitious roots and the length of hypocotyl in Vigna radiata (L.) Wilczek and, the effect on the length of stem, fresh and dry mass in buckwheat Fagopyrum esculentum Moench. cv. Pyra were evaluated. Cytokinin activity was determined on segments of

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2

Kremer, Robert J. "Antimicrobial Activity of Velvetleaf (Abutilon theophrasti) Seeds." Weed Science 34, no. 4 (July 1986): 617–22. http://dx.doi.org/10.1017/s0043174500067540.

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Velvetleaf (Abutilon theophrastiMedik. # ABUTH) seeds were bioassayed on 241 microbial isolates to assess their antimicrobial activity. Seeds placed on agar plates inoculated with test microorganisms released a diffusible substance(s) that inhibited the growth of 117 of 202 (58%) bacteria and all of the fungi tested. Antimicrobial activity of the seeds appeared to be nonselective as the extent of inhibition was not related to type of microorganism nor their origin. Hard, water-impermeable seeds had greater inhibitory activity than imbibed (soft) seeds. The intensity of inhibition was affected

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3

Akshit K. Lohan, Ranjana Juwantha, Mohit Singh Bisht Jalaj Saxena, and Pooja Kapoor. "Evaluation of Botanicals of Invasive Plant Species and Fungicides against Fungal Pathogens of Forest Nursery." International Journal of Current Microbiology and Applied Sciences 10, no. 9 (September 10, 2021): 152–62. http://dx.doi.org/10.20546/ijcmas.2021.1009.018.

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Investigation of plants that possess natural antimicrobial substances for plant protection has been recognized as a promising disease management strategy. Alternaria alternata, Fusarium solani, Macrophomina spp., and Pestalotiopsis spp. isolated from diverse hosts such as Azadirachta indica, Melia dubia, Saraca indica and Quercus leucotrichophora produce important diseases in forest nurseries such as leaf blight, leaf spot, and wilt. In this study, botanicals from two invasive plant species, Ageratina adenophora and Ageratum conyzoides, were prepared and tested against plant diseases. Two bota

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4

Anggraini, Fitri, Mieke Hemiawati Satari, and Marry Siti Mariam. "Bacterial inhibition test of methanolic extracts of strawberry (Fragraia x ananassa Duchesne), lime (Citrus aurantifolia), and radish (Raphanus sativus L.), towards Streptococcus Sanguis ATCC 10556." Padjadjaran Journal of Dentistry 30, no. 2 (July 31, 2018): 98. http://dx.doi.org/10.24198/pjd.vol30no2.18325.

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Introduction: Caries are initiated by the plaque formation on the tooth surface, due to the interaction between food debris and bacteria in the mouth. The pioneer bacterium of plaque formation is Streptococcus sanguis. The Strawberry fruit, lime fruit, and radish root are part of the plant that contains antibacterial substances. Flavonoid, tannin, saponin, alkaloid, polyphenol, terpenoid and quinon as antibacterial substances. This study aimed to evaluate strawberry fruit, lime fruit, and radish root methanol extract can inhibit Streptococcus sanguis ATCC 10556. Therefore, strawberry, lime, an

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5

Putri, Rury Eryna, Nisa Rachmania Mubarik, Laksmi Ambarsari, and Aris Tri Wahyudi. "Antifungal Substances Produced by B. subtilis Strain W3.15 Inhibit the Fusarium oxysporum and Trigger Cellular Damage." HAYATI Journal of Biosciences 30, no. 5 (June 12, 2023): 843–54. http://dx.doi.org/10.4308/hjb.30.5.843-854.

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Soybean Fusarium wilt and root rot disease caused by a necrotrophic ascomycete pathogen, F. oxysporum, triggered severe damage to the plant tissues and organs and impacted heavy losses. Biocontrol agents, Bacillus subtilis, were commonly used to produce a broad spectrum of antifungal substances and were gradually used in biocontrol studies for plant disease management. Investigation and determination of the inhibiting mechanism of antifungal substance produced by B. subtilis on F. oxysporum should be done to protect the soybean plant. This study revealed that basal nutrient broth (NB) gives th

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6

Paguirigan, Jaycee A., Rundong Liu, Seong Mi Im, Jae-Seoun Hur, and Wonyong Kim. "Evaluation of Antimicrobial Properties of Lichen Substances against Plant Pathogens." Plant Pathology Journal 38, no. 1 (February 1, 2022): 25–32. http://dx.doi.org/10.5423/ppj.oa.12.2021.0176.

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Plant pathogens pose major threats on agriculture and horticulture, causing significant economic loss worldwide. Due to the continuous and excessive use of synthetic pesticides, emergence of pesticide resistant pathogens has become more frequent. Thus, there is a growing needs for environmentally-friendly and selective antimicrobial agents with a novel mode of action, which may be used in combination with conventional pesticides to delay development of pesticide resistance. In this study, we evaluated the potentials of lichen substances as novel biopesticides against eight bacterial and twelve

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7

Cesa-Luna, Catherine, Antonino Baez, Verónica Quintero-Hernández, Joel De la Cruz-Enríquez, Ma Dolores Castañeda-Antonio, and Jesús Muñoz-Rojas. "The importance of antimicrobial compounds produced by beneficial bacteria on the biocontrol of phytopathogens." Acta Biológica Colombiana 25, no. 1 (January 1, 2020): 140–54. http://dx.doi.org/10.15446/abc.v25n1.76867.

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Bacteria produce antimicrobial compounds to compete for nutrients and space in a particular habitat. Antagonistic interactions can be evaluated by several methodologies including the double-layer agar and simultaneous inhibition assays. Among the well-known inhibitory substances produced by bacteria are the broad-spectrum antibiotics, organic acids, siderophores, antifungal, and bacteriocins. The most studied bacterial genera able to produce these inhibitory substances are Enterococcus, Lactococcus, Streptomyces, Bacillus, Pseudomonas, Klebsiella, Escherichia, and Burkholderia. Some beneficial

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8

Islam, A. K. M. Mominul, Osamu Ohno, Kiyotake Suenaga, and Hisashi Kato-Noguchi. "Suaveolic Acid: A Potent Phytotoxic Substance ofHyptis suaveolens." Scientific World Journal 2014 (2014): 1–6. http://dx.doi.org/10.1155/2014/425942.

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Hyptis suaveolens(Lamiaceae) is an exotic invasive plant in many countries. Earlier studies reported that the aqueous, methanol, and aqueous methanol extract ofH. suaveolensand its residues have phytotoxic properties. However, to date, the phytotoxic substances of this plant have not been reported. Therefore, the objectives of this study were isolation and identification of phytotoxic substances ofH. suaveolens. Aqueous methanol extract of this plant was purified by several chromatographic runs through bioassay guided fractionation using garden cress (Lepidium sativum) as a test plant. Final p

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9

Safni, Irda, and Widya Antastia. "In vitro antagonism of five rhizobacterial species against athelia rolfsii collar rot disease in soybean." Open Agriculture 3, no. 1 (August 1, 2018): 264–72. http://dx.doi.org/10.1515/opag-2018-0028.

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Abstract Plant Growth Promoting Rhizobacteria (PGPR) influence plant growth by a number of direct (producing plant growth promoting substances) and indirect (through prevention of deleterious effects of phytopathogenic microorganisms) mechanisms. Five species of bacteria were isolated from rhizospheric soils of soybean and peanut fields from several locations in North Sumatra. On the basis of morphological and biochemical characteristics, the bacteria were identified as Aeromonas hydrophila, Burkholderia cepacia, Serratia ficaria, Pantoea spp. 2, and Vibrio alginolyticus. These species were te

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10

Robert, Jean-Claude, and Jean-Paul Bret. "Release of an inhibitor of stipe elongation from illuminated caps of Coprinus congregatus mushrooms." Canadian Journal of Botany 65, no. 3 (March 1, 1987): 505–8. http://dx.doi.org/10.1139/b87-063.

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Inhibition of stipe growth by a substance or substances produced in the cap of Coprinus congregatus fruit bodies cultivated in continuous light has been confirmed. Caps in which maturation was induced or prevented were transferred to decapitated stipes from normally growing sporophores. Stipes were most sensitive to inhibition when treated 16–18 h before maturity. Caps from continuous-light primordia only a few hours older than the photoinhibited stage were most inhibitory. When normal primordium maturation was induced by darkness followed by light, the inhibitor disappeared from the caps 18–2

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11

Epstein, James, Edward J. Desjardins, Peter L. Hudson, and Patricia K. Donahoe. "Stainless steel mesh supports high density cell growth and production of recombinant Mullerian Inhibiting Substances." In Vitro Cellular & Developmental Biology 25, no. 2 (February 1989): 213–16. http://dx.doi.org/10.1007/bf02626181.

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12

Sofyanita, Eko Naning, and Roni Afriansya. "DIFFERENCES OF INHIBITION ZONE FOREST PURE HONEY AND CINNAMON (Cinnamomum burmani) AS ANTIBACTERIAL BACTERIAL COMPOUNDS OF MEMBERS OF THE Enterobacteriaceae FAMILY." Jurnal Riset Kesehatan 10, no. 1 (May 28, 2021): 7–11. http://dx.doi.org/10.31983/jrk.v10i1.6424.

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Honey and cinnamon are plant products that have many properties, one of which is used as an antibacterial agent for various diseases. The effectiveness of the two active substances against bacteria in the Enterobacteriaeae family is unclear. The study was conducted to determine the differences in the effectiveness of forest honey and cinnamon in inhibiting the growth of bacteria in the Enterobacteriaceae family. This research method is an experimental study with a combination method of diffusion and wells using samples of the bacteria Klebsiella pneumoniae, Esherichia coli, Salmonella typhi, S

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13

Raskil’dina, Gul’nara Z., Yulianna G. Borisova, Natalia N. Mikhaiylova, Semyon S. Zlotskiy, Louise M. Mryasova, and Vyacheslav M. Kuznetsov. "PLANT GROWTH REGULATORS BASED ON CYCLIC KETALS AND THEIR DERIVATIVES." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENIY KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 60, no. 1 (March 1, 2017): 95. http://dx.doi.org/10.6060/tcct.2017601.5475.

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For citation:Raskil’dinaG.Z., BorisovaY.G., MikhailovaN.N., MryasovaL.M., KuznetsovV.M., ZlotskiyS.S. Plant growth regulators based on cyclic ketals and their derivatives. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2017. V. 60. N 1. P. 95-101.Low toxicity of polyfunctional 1,3-dioxocyclicalkanes to soil bacteria allows to consider the compounds of this class as perspective herbicides. In this regard, we studied the herbicidal activity of a series of substituted cyclic ketals, their derivatives and alkenylmalonates. On the basis of commercially available triols the corresponding cyclic ket

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14

Chowdhury, Pranami, Shamim Shamsi, and Md Abul Bashar. "Antagonistic potential of soil fungi as biocontrol agent against rice pathogens." Bangladesh Journal of Botany 53, no. 1 (March 31, 2024): 101–8. http://dx.doi.org/10.3329/bjb.v53i1.72246.

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Antagonistic potential of six soil fungi viz., Aspergillus flavus Link., A. fumigatus Fresen., A. niger Tiegh., Penicillium sp., Trichoderma harzianum Refat. and T. viride Pers. against eight pathogenic fungi viz., Alternaria alternata (Fr.) Keissler, Curvularia lunata (Wakker) Boedijn, Drechslera oryzae Breda de Haan (Subramanian and Jain), Fusarium moniliforme Sheldon, F. solani (Mart.) Sacc. Microdochium oryzae (Hashloka and Yokogi) Sam. and Hal., Pestalotiopsis guepinii (Desm.) Stay. and Sarocladium oryzae (Sawada) W. Gams and D. Hawks of rice were evaluated. In colony interaction, the hig

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15

Sahu, Anita, and Anjana Devkota. "ANTIMICROBIAL ACTIVITY OF LEAF EXTRACTS OF SOME INVASIVE ALIEN PLANT SPECIES OF ASTER FAMILY AGAINST CLINICAL BACTERIA." Ecoprint: An International Journal of Ecology 23 (December 5, 2016): 1–12. http://dx.doi.org/10.3126/eco.v23i0.20646.

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Aqueous and methanolic extracts of three plants at four different concentration viz. at 50, 100, 150 and 200 mg/ml were tested on clinical bacteria using the disc diffusion method. In vitro antibacterial activity was screened by using Nutrient Agar (NA). The qualitative phytochemical analysis depicted the presence of terpenoids, saponins, alkaloids, flavonoids, carotenes and glycosides in the plants. Results showed broad spectrum antimicrobial activity against the Gram-negative and Gram-positive bacteria. The methanol extract inhibited the growth of more bacteria compared to the aqueous extrac

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16

Voropaeva, N., V. Karpachev, V. Varlamov, and Oleg L. Figovsky. "Influence of Efficient, Multicomponent, Polyfunctional, Physiologically Active (Nano) Chips with Herbicide Activity on Rice Crop Growth, Development, Yield and on Weed Growth Inhibition." International Letters of Chemistry, Physics and Astronomy 26 (January 2014): 62–68. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.26.62.

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Using physiologically active, complex, polyfunctional, multicomponent (nano) systems – (nano) chips in the pre-sowing rice treatment (nano) technology allows precise seeding; enhancing field seed germination; reducing plant morbidity rate considerably or even deleting disease incidents; increasing plant adaptability to unfavorable environmental conditions; expanding crop yield; improving products quality by not using toxic chemical means of plant protection; intensifying competitive ability of agricultural products as well as assuring environmental safety in crop cultivation regions. Nutrition

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17

Voropaeva, N., V. Karpachev, V. Varlamov, and Oleg L. Figovsky. "Influence of Efficient, Multicomponent, Polyfunctional, Physiologically Active (Nano) Chips with Herbicide Activity on Rice Crop Growth, Development, Yield and on Weed Growth Inhibition." International Letters of Chemistry, Physics and Astronomy 26 (January 24, 2014): 62–68. http://dx.doi.org/10.56431/p-f9n4d0.

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Using physiologically active, complex, polyfunctional, multicomponent (nano) systems – (nano) chips in the pre-sowing rice treatment (nano) technology allows precise seeding; enhancing field seed germination; reducing plant morbidity rate considerably or even deleting disease incidents; increasing plant adaptability to unfavorable environmental conditions; expanding crop yield; improving products quality by not using toxic chemical means of plant protection; intensifying competitive ability of agricultural products as well as assuring environmental safety in crop cultivation regions. Nutrition

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18

Gubó, Eduárd, Ildikó Kiss-Szarvák, Mishele Erdenebaatar, Richárd Gubó, Bence Horváth, Pál Szakál, and Judit Plutzer. "Ecotoxicological investigations of milking cow slurry and changes of oestrogenic compounds in the solid and liquid phase." Energy, Ecology and Environment 7, no. 2 (November 15, 2021): 97–110. http://dx.doi.org/10.1007/s40974-021-00234-1.

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AbstractDue to the appearance of intensive livestock-rearing systems since the 1970s, a vast amount of liquid manure (slurry) has been produced. The application and utilization are partly regulated for this special substance, which contains urine, excrement, process water, and other chemicals, such as insecticides and disinfectants. Our research was conducted on a slurry management system of a dairy cattle farm, focusing on the investigation of the presence of oestrogenic substances and toxicity of slurry before and after using a separator technology. Yeast oestrogen screen shows in this study

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19

Moh, Seinn Moh, Naoaki Kurisawa, Kiyotake Suenaga та Hisashi Kato-Noguchi. "Allelopathic Potential of Marsdenia tenacissima (Roxb.) Moon against Four Test Plants and the Biological Activity of Its Allelopathic Novel Compound, 8-Dehydroxy-11β-O-Acetyl-12β-O-Tigloyl-17β-Marsdenin". Plants 12, № 8 (15 квітня 2023): 1663. http://dx.doi.org/10.3390/plants12081663.

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Plant parts and extracts that are rich in bioactive substances with allelopathic potential can be explored as a possible alternative to herbicides for natural weed control in sustainable agriculture. In the present study, we investigated the allelopathic potential of Marsdenia tenacissima leaves and its active substances. Aqueous methanol extracts of M. tenacissima showed significant inhibitory activities against the growth of lettuce (Lactuca sativa L.), alfalfa (Medicago sativa L.), timothy (Phleum pratense L.), and barnyard grass (Echinochloa crusgalli (L.) Beauv.). The extracts were purifi

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20

Nedeva, D., S. Petkova, Y. Angelova, and L. Iliev. "The effect of plant growth regulators and chlorsulfuron on electrophoretic profiles of soluble proteins, polypeptides and antioxidant enzymes in maize seedlings." Plant, Soil and Environment 51, No. 2 (November 19, 2011): 87–93. http://dx.doi.org/10.17221/3560-pse.

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Investigations were carried out with maize (Zea mays L.) seedlings. The effect of chlorsulfuron (CHF) on the electrophoretic profiles of the total and thermostable proteins, polypeptides and some antioxidant enzymes was compared to the effect of abscisic acid (ABA), benzylaminopurine (BAP) and N<sup>1</sup>-(2-chloro-4-pyridyl)-N<sup>2</sup>-phenylurea (4PU-30) applied in concentrations that inhibit the growth of seedlings. It was established that the effect of CHF on seedling growth as well as on the studied biochemical parameters was most significant. The reduction of

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21

Lun, Thang Lam, Shunya Tojo, Toshiaki Teruya, and Hisashi Kato-Noguchi. "Allelopathic Activity of the Invasive Plant Polygonum chinense Linn. and Its Allelopathic Substances." Plants 12, no. 16 (August 17, 2023): 2968. http://dx.doi.org/10.3390/plants12162968.

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Polygonum chinense Linn., belonging to the Polygonaceae family, is distributed mostly in northern temperate climates. This species is a high-risk invasive plant and is thought to possess allelopathic potential. This study aimed to isolate and identify the allelopathic substances from P. chinense. Aqueous methanol extracts of P. chinense significantly inhibited the growth of alfalfa and Italian ryegrass seedlings in a species- and concentration-dependent manner. Activity-guided fractionation led to the isolation of two active compounds: dehydrovomifoliol and loliolide. A cress bioassay was used

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22

Wang, Enzhao, Xiongduo Liu, Zhiyuan Si, Xu Li, Jingjing Bi, Weiling Dong, Mingshun Chen, et al. "Volatile Organic Compounds from Rice Rhizosphere Bacteria Inhibit Growth of the Pathogen Rhizoctonia solani." Agriculture 11, no. 4 (April 19, 2021): 368. http://dx.doi.org/10.3390/agriculture11040368.

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Rice sheath blight, a fungal disease caused by Rhizoctonia solani, seriously threatens rice production. Some of the volatile organic compounds (VOCs) produced by microbes are inhibitory to the growth of the plant pathogen, and hence may have the potential as environmentally friendly antifungal substances. However, information on the inhibitory effect of VOCs released by rice rhizosphere bacteria on R. solani is scarce. In this study, bacteria from the rice rhizosphere capable of inhibiting the growth of R. solani via releasing VOCs were screened using a double Petri dish assay. Headspace solid

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23

Anita, Anita, Andi Fatmawati, Tuty Widyanti, Rahmawati Rahmawati, and Putri Ahmad. "Activity Test of Kedondong Leaf Juice Extract (Spondias dulcis) as Anti-Candida albicans in Patients with Diabetes Mellitus." Lontara Journal of Health Science and Technology 4, no. 2 (December 15, 2023): 140–48. http://dx.doi.org/10.53861/lontarariset.v4i2.418.

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Diabetes is a disease characterized by high blood glucose levels which can stimulate the growth of the Candida albicans. Indonesia is the second highest country in the world with biodiversity which allows the creation of new compounds that can be used as medicine. One type of plant that has medicinal properties is kedondong leaves (Spondias dulcis) which can be used as herbal medicine, and can also act as an anti-fungal, because it has anti-fungal substances such as flavonoids, alkaloids, saponins and tannins. This compound can prevent fungal growth. The aim of this research was to determine t

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24

Liang, Dong, Shengnan Liu, Miaoyun Li, Yaodi Zhu, Lijun Zhao, Lingxia Sun, Yangyang Ma, and Gaiming Zhao. "Effects of Different Bacteriostats on the Dynamic Germination of Clostridium perfringens Spores." Foods 12, no. 9 (April 28, 2023): 1834. http://dx.doi.org/10.3390/foods12091834.

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Bacteriostats, as chemical substances that inhibit bacterial growth, are widely used in the sterilization process; however, their effects on spindle spores are unclear. In this study, the effects of bacteriostats, including nine commonly used food additives and four detergents, on the growth of Clostridium perfringens spores were investigated. The results showed that 0.07‰ ethylenediaminetetraacetate had a good inhibitory effect on C. perfringens spore growth, and the spore turbidity decreased by 4.8% after incubation for 60 min. Furthermore, 0.3‰ tea polyphenols, 0.8‰ D-isoascorbic acid, and

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25

Shafeeq, Ahmed Fawzi, Idham Ali Abed, and Abdullah Abdulkareem Hassan. "Evaluation of The Efficiency of Some Desert Plant Extracts in The Growth of Agaricus Bisporus and The Inhibition of Some of Its Pathogens." IOP Conference Series: Earth and Environmental Science 910, no. 1 (November 1, 2021): 012113. http://dx.doi.org/10.1088/1755-1315/910/1/012113.

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Abstract Seven isolates of Pseudomonas spp. were isolated from the casing soil and 11 fungal isolates were isolated from the spent compost in the Mushroom Farm - College of Agriculture - Tikrit University. According to the pathogenicity test against Agaricus bisporus fruit bodies, the results showed that the highest infection rate was recorded in the bacterial isolate 1077by 77.45%, while the fungal isolate 1076 showed the highest pathogenicity against Agaricus bisporus fruit bodies by recording the highest infection rate reached to 81.23%. The pathogenic bacteria and fungi isolates were pheno

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Rasyid, Andi Ulfah Magefirah, and Zahira Amody. "PENGUJIAN EFEKTIFITAS FORMULA GEL EKSTRAK DAUN BELUNTAS (Pluchea indica (L.) Less) DENGAN VARIASI KONSENTRASI GELLING AGENT SEBAGAI KANDIDAT SEDIAAN ANTI JERAWAT." Jurnal Ilmiah Manuntung 6, no. 2 (December 30, 2020): 312. http://dx.doi.org/10.51352/jim.v6i2.393.

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Beluntas (Pluchea indica (L.) Less) is a plant that is often used in traditional medicine because of the presence of several substances that have activity as antimicrobial compounds. Beluntas leaves contain secondary metabolite compounds such as flavonoids, alkaloids, tannins, steroids, terpenoids and saponins which can function as antibacterial. This experimental research aimed at obtaining beluntas leaf extract gel and to determine the physical stability and the effectiveness of beluntas extract gel against Propionibacterium acnes. The first step is drying the beluntas leaves and and extract

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Porozhnyuk, L. A., N. S. Lupandina, and A. V. Nepomenko. "Cytogenetic assessment of the quality of media treated with Hermetia Illucens zoocompost components." BIO Web of Conferences 103 (2024): 00030. http://dx.doi.org/10.1051/bioconf/202410300030.

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The influence of black soldier fly maggots vermiculture zoocompost water extract components on the proliferative activity of root apexes’ meristem and the root system growth of Allium cepa L was studied. Allium-test was used as a biological analysis, approved by International Program on Chemical Safety (IPCS) for monitoring environmental contaminants, substances, and chemicals. The cytogenetic effects, resulting from the action of zoocompost’s water-soluble components and manifesting themselves in abnormalities of mitosis stages, were identified. The «dose-effect» relationship between the wate

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Lun, Thang Lam, Arihiro Iwasaki, Kiyotake Suenaga, and Hisashi Kato-Noguchi. "Isolation and Identification of Plant-Growth Inhibitory Constituents from Polygonum chinense Linn and Evaluation of Their Bioherbicidal Potential." Plants 12, no. 7 (April 6, 2023): 1577. http://dx.doi.org/10.3390/plants12071577.

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Polygonum chinense Linn. is a medicinal and invasive plant that belongs to the family Polygonaceae. The pharmacological activities and phytochemical constituents of Polygonum chinense are well reported, but the allelopathic effects and potent allelopathic substances of P. chinense remain to be investigated. Hence, this experiment was conducted to separate and characterize potentially allelopathic substances from an extract of the Polygonum chinense plant. The Polygonum chinense plant extracts highly suppressed the growth of cress (Lepidium sativum L.), lettuce (Lactuca sativa L.), barnyard gra

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29

KYAW, Ei H., and Hisashi KATO-NOGUCHI. "Allelopathic potential of Acacia pennata (L.) Willd. leaf extracts against the seedling growth of six test plants." Notulae Botanicae Horti Agrobotanici Cluj-Napoca 48, no. 3 (September 23, 2020): 1534–42. http://dx.doi.org/10.15835/nbha48312022.

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Acacia pennata (L.) Willd (Mimosaceae), a woody climbing plant, is used as a traditional medicinal plant in the South and Southeast Asia regions and has been documented to have various pharmacological effects. However, the allelopathy of this plant still remains unclear. Thus, the allelopathic potential of A. pennata leaf extracts was examined against the seedling growth of dicot plants [alfalfa (Medicago sativa L.), cress (Lepidium sativum L.), and lettuce (Lactuca sativa L.)] and monocot plants [barnyard grass (Echinochloa crus-galli (L.) Beauv.), Italian ryegrass (Lolium multiﬂorum Lam.), a

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Khatun, Mst Rokeya, Shunya Tojo, Toshiaki Teruya, and Hisashi Kato-Noguchi. "The Allelopathic Effects of Trewia nudiflora Leaf Extracts and Its Identified Substances." Plants 12, no. 6 (March 20, 2023): 1375. http://dx.doi.org/10.3390/plants12061375.

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Trewia nudiflora Linn. is a woody plant of the Euphorbiaceae family. It is well known for its use as a folk remedy, but its potential for phytotoxicity has not been explored. Therefore, this study investigated the allelopathic potential and the allelopathic substances in T. nudiflora leaves. The aqueous methanol extract of T. nudiflora was found to have a toxic effect on the plants used in the experiment. The shoot and root development of lettuce (Lactuca sativa L.) and foxtail fescue (Vulpia myuros L.) were significantly (p ≤ 0.05) reduced by the T. nudiflora extracts. The growth inhibition b

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Pugacheva, Anna, Kristina Bikmetova, and Yuliya Smirnova. "Sorbents of Phenols As a Components of the Nutritional Medium in Microclonal Reproduction of Plants." Natural Systems and Resources, no. 3 (October 2021): 39–48. http://dx.doi.org/10.15688/nsr.jvolsu.2021.3.6.

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In the process of microclonal reproduction, plants secrete various substances into the nutrient medium, for example, phenolic compounds, which act as inhibitors of growth processes and, accordingly, prevent the normal development of explants in vitro. Plant tissues are treated with stabilizing substances, and various sorbents are also used as components of the nutrient medium to neutralize the negative effects of phenols. This paper presents an overview of the approved methods for solving the problem of sorption of phenolic compounds during microclonal propagation of plants. Various studies ar

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Hao, Jianjun J., Huawei Liu, Irwin Ronaldo Donis-Gonzalez, Xiao Hong Lu, A. Daniel Jones, and Dennis W. Fulbright. "Antimicrobial Activity of Chestnut Extracts for Potential Use in Managing Soilborne Plant Pathogens." Plant Disease 96, no. 3 (March 2012): 354–60. http://dx.doi.org/10.1094/pdis-03-11-0169.

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Chestnut extracts were studied for antimicrobial activity against selected microorganisms, including plant pathogens. Chestnut extract on paper discs was applied to an agar medium to evaluate the inhibition to multiple microorganisms or the extract was added at various concentrations to a culture medium to evaluate the growth of target microorganisms. Chestnut type, tissue of plants (shell, pellicle, and leaf), extraction methods, and physical characteristics were studied to determine antimicrobial activity. Most test microorganisms were inhibited by the extracts at different effective concent

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Wang, Haiyan, Rong Zhang, Yanan Duan, Weitao Jiang, Xuesen Chen, Xiang Shen, Chengmiao Yin, and Zhiquan Mao. "The Endophytic Strain Trichoderma asperellum 6S-2: An Efficient Biocontrol Agent against Apple Replant Disease in China and a Potential Plant-Growth-Promoting Fungus." Journal of Fungi 7, no. 12 (December 8, 2021): 1050. http://dx.doi.org/10.3390/jof7121050.

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A study was conducted for endophytic antagonistic fungi obtained from the roots of healthy apple trees growing in nine replanted orchards in Shandong Province, China. The fungi were assessed for their ability to inhibit Fusarium proliferatum f. sp. malus domestica MR5, a fungal strain associated with apple replant disease (ARD). An effective endophyte, designated as strain 6S-2, was isolated and identified as Trichoderma asperellum. Strain 6S-2 demonstrated protease, amylase, cellulase, and laccase activities, which are important for the parasitic and antagonistic functions of pathogenic fungi

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JITĂREANU, Alexandra, Gabriela TĂTĂRÎNGĂ, Ana-Maria ZBANCIOC, and Ursula STĂNESCU. "Toxicity of Some Cinnamic Acid Derivatives to Common Bean (Phaseolus vulgaris)." Notulae Botanicae Horti Agrobotanici Cluj-Napoca 39, no. 2 (November 21, 2011): 130. http://dx.doi.org/10.15835/nbha3927183.

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Cinnamic acid derivatives are an important class of biologically active compounds, playing an important role in the plantsâ€™ development, but may also present a wide range of actions: antimicrobial, antioxidant, antiinflamatory, antitumoral. The present study investigated the toxicity of ten cinnamic acid derivatives on Phaseolus vulgaris, this being the first step in evaluating their pharmacotoxicological potential (usually, plant toxicity tests are used for ecotoxicity assessment, but they can also provide some useful general information about the toxic potential of a pharmaceutical substan

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Wai Thet Tin, Wai, Hisayoshi Hayashi, Toshihiko Otomatsu, Katsutoshi Hirose, Koji Hasegawa, and Hideyuki Shigemori. "Structure-Activity Relationships of Natural Occurring Plant Growth-Inhibiting Substance Caprolactam and Its Related Compounds." HETEROCYCLES 78, no. 10 (2009): 2439. http://dx.doi.org/10.3987/com-09-11782.

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Hossen, Kawsar, Krishna Rany Das, Shun Okada, Arihiro Iwasaki, Kiyotake Suenaga, and Hisashi Kato-Noguchi. "Allelopathic Potential and Active Substances from Wedelia Chinensis (Osbeck)." Foods 9, no. 11 (November 2, 2020): 1591. http://dx.doi.org/10.3390/foods9111591.

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Wedelia chinensis (Asteraceae) is a wetland herb native to India, China, and Japan. It is a valuable medicinal plant recorded to have pharmaceutical properties. However, the phytotoxic potential of Wedelia chinensis has not yet been examined. Thus, we carried out this study to establish the allelopathic effects of Wedelia chinensis and to identify its phytotoxic substances. Extracts of Wedelia chinensis exhibited high inhibitory activity against the root and shoot growth of cress, alfalfa, rapeseed, lettuce, foxtail fescue, Italian ryegrass, timothy, and barnyard grass. The inhibition was vari

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Huang, Xiaolong, Jingzhong Chen, Jiming Liu, Jia Li, Mengyao Wu, and Bingli Tong. "Autotoxicity Hinders the Natural Regeneration of Cinnamomum migao H. W. Li in Southwest China." Forests 10, no. 10 (October 18, 2019): 919. http://dx.doi.org/10.3390/f10100919.

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Autotoxicity is a widespread phenomenon in nature and is considered to be the main factor affecting new natural recruitment of plant populations, which was proven in many natural populations. Cinnamomum migao H. W. Li is an endemic medicinal woody plant species mainly distributed in Southwestern China and is defined as an endangered species by the Red Paper of Endangered Plants in China. The lack of seedlings is considered a key reason for population degeneration; however, no studies were conducted to explain its causes. C. migao contains substances with high allelopathic potential, such as te

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Silva, Rakiely M., Alice N. A. Peres, Lázaro E. P. Peres, Fábio L. Olivares, Sara Sangi, Natália A. Canellas, Riccardo Spaccini, Silvana Cangemi, and Luciano P. Canellas. "Humic Substances Isolated from Recycled Biomass Trigger Jasmonic Acid Biosynthesis and Signalling." Plants 12, no. 17 (September 1, 2023): 3148. http://dx.doi.org/10.3390/plants12173148.

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Intensive agriculture maintains high crop yields through chemical inputs, which are well known for their adverse effects on environmental quality and human health. Innovative technologies are required to reduce the risk generated by the extensive and harmful use of pesticides. The plant biostimulants made from humic substances isolated from recyclable biomass offer an alternative approach to address the need for replacing conventional agrochemicals without compromising the crop yield. The stimulatory effects of humic substances are commonly associated with plant hormones, particularly auxins.

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Boonmee, Sutjaritpan, Arihiro Iwasaki, Kiyotake Suenaga, and Hisashi Kato-Noguchi. "Identification of 6,7-Dimethoxychromone as a Potent Allelochemical from Jatropha podagrica." Natural Product Communications 13, no. 11 (November 2018): 1934578X1801301. http://dx.doi.org/10.1177/1934578x1801301126.

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Jatropha podagrica Hook. is cultivated as an ornamental plant and is also used in traditional medicine. The species has various pharmacological properties, but it has not yet been investigated for any potential allelopathic activity and allelopathic substances. In this study, an allelopathic active substance was isolated from an aqueous methanol extract of J. podagrica leaves through chromatography and reverse-phase HPLC. The substance was characterized as 6,7-dimethoxychromone by spectral analysis. 6,7-Dimethoxychromone significantly inhibited the shoots and roots of cress at concentrations g

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Dewi Rosmalia, Minarni, and Mhd Riza Marjoni. "Effect of Nutmeg (Myristica Fragrans) Methanolic Extract to the Growth of Dental Plaque Bacteria." DENTA 16, no. 2 (August 31, 2022): 74–80. http://dx.doi.org/10.30649/denta.v16i2.3.

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Background: One of the causes of dental caries is Streptococcus mutant bacteria which has the ability to change the sugar content of food waste into lactic acid as the initial process of caries. One of the efforts to overcome dental caries is to use natural ingredients such as nutmeg. Every part of nutmeg has active substances that are efficacious as antimicrobial, antibacterial, antioxidant, antifungal and anti-inflammatory. Pulpam, seeds and fuli of nutmeg showed as potential extracts in inhibiting the growth of Streptococcus mutans. Objective: This study aimed to analyze methanol extracts f

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Khatun, Mst Rokeya, Shunya Tojo, Toshiaki Teruya, and Hisashi Kato-Noguchi. "Trewia nudiflora Linn, a Medicinal Plant: Allelopathic Potential and Characterization of Bioactive Compounds from Its Leaf Extracts." Horticulturae 9, no. 8 (August 7, 2023): 897. http://dx.doi.org/10.3390/horticulturae9080897.

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Trewia nudiflora Linn. is a valuable forest resource due to its economic, ethnomedicinal, and ecological properties; however, its allelopathic potential is undocumented. Therefore, this research was designed to investigate the allelopathic impacts of T. nudiflora leaf extracts on alfalfa (Medicago sativa L.) and barnyard grass (Echinochloa crus-galli (L.) P. Beauv.) growth, as well as to isolate and to identify the active allelopathic substances responsible for these effects. A bioassay experiment with eight different treatments (0.1, 0.3, 1, 3, 10, 30, 100, and 300 mg dry weight (DW) equivale

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Aksoy, Emre, Amir Maqbool, Bayram Ali Yerlikaya, and Fazli Wahid. "Bitki Peptit ve Amino Asit Taşıyıcılarının Demir Taşınmasındaki Görevleri." Turkish Journal of Agriculture - Food Science and Technology 10, sp1 (December 30, 2022): 2646–55. http://dx.doi.org/10.24925/turjaf.v10isp1.2646-2655.5600.

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Iron (Fe) is an important micronutrient for plants, and its deficiency causes serious yield losses by inhibiting plant growth and development. Detailed studies have been carried out for many years on the uptake of available iron in the soil by plants and its transport to plant organs. These studies proved that Fe can be transported in chelated form with some organic substances including peptides and amino acids. However, detailed studies have not been conducted on the uptake of peptide- or amino acid-chelated Fe into the plant or its transport between organs. Few studies have focused on the ol

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Goldner, W. R., F. M. Hoffman, and R. J. Medve. "Allelopathic effects of Cladonia cristatella on ectomycorrhizal fungi common to bituminous strip-mine spoils." Canadian Journal of Botany 64, no. 8 (August 1, 1986): 1586–90. http://dx.doi.org/10.1139/b86-212.

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Acetone–toluene extracts of Cladonia cristatella inhibited the growth of fungi known to form ectomycorrhizal associations with trees commonly found on bituminous strip-mine spoils in western Pennsylvania. Growth of Pisolithus tinctorius and Suillus luteus was completely inhibited by C. cristatella extracts over a 30-d bioassay period. Thelephora terrestris was dead after 17 d. The growth of Cenococcum graniforme was unaffected by lichen extracts. D-Usnic acid, a major secondary compound of the C. cristatella extract, was found to inhibit the growth of P. tinctorius. This inhibition, however, d

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Hossen, Kawsar, Krishna Rany Das, Yuka Asato, Toshiaki Teruya, and Hisashi Kato-Noguchi. "Allelopathic Activity and Characterization of Allelopathic Substances from Elaeocarpus floribundus Blume Leaves for the Development of Bioherbicides." Agronomy 12, no. 1 (December 27, 2021): 57. http://dx.doi.org/10.3390/agronomy12010057.

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To help protect the environment as well as increase agricultural production, the use of synthetic herbicides must be reduced and replaced with plant-based bioherbicides. Elaeocarpus floribundus is a perennial, evergreen, and medium-sized plant grown in different areas of the world. The pharmaceutical properties and various uses of Elaeocarpus floribundus have been reported, but its allelopathic potential has not yet been explored. Thus, we carried out the present study to identify allelopathic compounds from Elaeocarpus floribundus. Aqueous MeOH extracts of Elaeocarpus floribundus significantl

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Pandey, H., V. Pandey, S. K. Nandi, and L. M. S. Palni. "Role of plant growth substances in regulating pseudomonocotyly and correlative inhibition in some alpine Himalayan rosettes." South African Journal of Botany 125 (September 2019): 493–98. http://dx.doi.org/10.1016/j.sajb.2019.08.017.

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Frolova, Anna S., Anna D. Fokina, Irina S. Milentyeva, Lyudmila K. Asyakina, Larisa A. Proskuryakova, and Alexander Y. Prosekov. "The Biological Active Substances of Taraxacum officinale and Arctium lappa from the Siberian Federal District." International Journal of Molecular Sciences 25, no. 6 (March 13, 2024): 3263. http://dx.doi.org/10.3390/ijms25063263.

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Currently, scientists are increasingly focusing on utilizing the natural flora of the planet to search for and isolate individual bioactive substances that prevent various diseases, contribute to increased life expectancy, and affect all major life-supporting systems in the human body. This study describes the examination of the composition of plant raw materials from the Siberian Federal District. The research focuses on plant specimens from the root parts of Taraxacum officinale and Arctium lappa, collected in the Kemerovo region. The study determines the contents of the water-soluble vitami

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Kommerein, Nadine, Nina Vierengel, Jonathan Groß, Till Opatz, Bilal Al-Nawas, and Lena Katharina Müller-Heupt. "Antiplanktonic and Antibiofilm Activity of Rheum palmatum against Streptococcus oralis and Porphyromonas gingivalis." Microorganisms 10, no. 5 (May 3, 2022): 965. http://dx.doi.org/10.3390/microorganisms10050965.

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Periodontitis and peri-implantitis are inflammatory conditions with a high global prevalence. Oral pathogens such as Porphyromonas gingivalis play a crucial role in the development of dysbiotic biofilms associated with both diseases. The aim of our study was to identify plant-derived substances which mainly inhibit the growth of “disease promoting bacteria”, by comparing the effect of Rheum palmatum root extract against P. gingivalis and the commensal species Streptococcus oralis. Antiplanktonic activity was determined by measuring optical density and metabolic activity. Antibiofilm activity w

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Islam, A. K. M. Mominul, and Hisashi Kato-Noguchi. "Phytotoxic Activity ofOcimum tenuiflorumExtracts on Germination and Seedling Growth of Different Plant Species." Scientific World Journal 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/676242.

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Phytotoxic activity ofOcimum tenuiflorum(Lamiaceae) plant extracts was investigated against the germination and seedling growth of cress (Lepidium sativum), lettuce (Lactuca sativa), alfalfa (Medicago sativa), Italian ryegrass (Lolium multiflorum), barnyard grass (Echinochloa crus-galli), and timothy (Phleum pratense) at four different concentrations. The plant extracts at concentrations greater than 30 mg dry weight equivalent extract mL−1reduced significantly the total germination percent (GP), germination index (GI), germination energy (GE), speed of emergence (SE), seedling vigour index (S

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Krupiński, Grzegorz, and Piotr Sobiczyński. "The influence of plant extracts on growth of Erwinia amylovora - the causal agent of fire blight." Acta Agrobotanica 54, no. 2 (2013): 81–91. http://dx.doi.org/10.5586/aa.2001.025.

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Ethanol and water extracts obtained on Soxhlet apparatus from various organs and parts (leaves, flowers, shoots, onion, bark, fruit) of 30 herbal and woody plants species were tested for growth inhibition of <i>Erwinia amylovora</i> using agar diffusion method. Active extracts were found in 23 plant species but in 13 ofthem it was found for the first time. The highest diameter of growth inhibition zone of this bacterium was caused by extracts from <i>Aloe arborescens, Juglans regia, Rhus typhina, Salvia offici nalis</i> and <i>Satureja hortensis</i>. In almo

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Moh, Seinn Moh, Arihiro Iwasaki, Kiyotake Suenaga та Hisashi Kato-Noguchi. "Allelopathic Activity of a Novel Compound, 5,6-Dihydrogen-11α-O-acetyl-12β-O-tigloyl-17β-marsdenin, and a Known Steroidal Glycoside from the Leaves of Marsdenia tenacissima (Roxb.) Moon". Agronomy 12, № 7 (27 червня 2022): 1536. http://dx.doi.org/10.3390/agronomy12071536.

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Medicinal plants are rich sources of bioactive substances that can be used to develop environmentally friendly weed control alternatives. Marsdenia tenacissima (Roxb.) Moon is a traditional medicinal plant well known for its pharmacological activities and several bioactive compounds. However, its allelopathy and related substances have not been reported. Hence, the present study was conducted to explore the allelopathic potential and substances from M. tenacissima leaves. Aqueous methanol extracts of M. tenacissima showed significant inhibitory activities against the growth of cress (Lepidium

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