Growth inhibitors in rice‐straw extracts and their effects on Chinese milk vetch (<i>Astragalus sinicus</i>) seedlings

Pramanik, M. H. R.; Minesaki, Yuji; Yamamoto, Takashi; Matsui, Yoshihisa; Nakano, Hisao

doi:10.1046/j.1445-6664.2001.00016.x

Cited by 10 publications

(8 citation statements)

References 12 publications

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“…In previous studies it has been reported from the decomposing barley straw,30 rice straw31 and in volatile compounds secreted by the oyster mushroom 32. Allelochemical effects of these naturally occurring forms of p ‐hydroxybenzaldehyde were reported to be inhibitory against Chinese vetch, Astragalus sinicus ,31 bacteria,32 blue green algae,30, 33, 34 and diatoms 35. The aforementioned studies clearly indicate the effective inhibitory role of p ‐hydroxybenzadehyde as evidenced from the present investigation against microfouling bacteria and diatom species.…”

Section: Resultsmentioning

confidence: 99%

Synthesis, characterization, and evaluation of antifouling polymers of 4‐acryloyloxybenzaldehyde with methyl methacrylate

Subramanyam

Mohandoss

Shin

2009

J of Applied Polymer Sci

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In recent years, antifouling (AF) polymers are widely used in marine paints to protect the ship hulls from biofouling. The AF polymer coatings have better leaching characteristics and long lasting efficiency than other conventional formulations. In this study, an attempt has been made to prepare new p-acryloyloxybenzaldehyde(AcBA) polymers to assess their AF efficiency against marine microfoulers. The monomer, AcBA was prepared by the esterification reaction between p-hydroxybenzaldehyde (HBA) and acryloyl chloride (Ac) in presence of triethylamine (TEA) in MEK at 0 C. The reaction was monitored by TLC and the prepared monomer was characterized by UV, IR, were prepared by solution polymerization using BPO as initiator. To find out the AF activity of prepared polymers, representatives of marine microfoulers, shipfouling bacteria (Bacillus macroides and Pseudomonas aeruginosa) and microalgae (Amphora coffeaeformis and Navicula incerta) were screened. The contact toxicity and diatom attachment assays were conducted with prepared polymers and microfouling formation on coatings was also investigated using a tubular biofilm reactor. AF potential of these polymers coating is demonstrated.

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Section: Resultsmentioning

confidence: 99%

Synthesis, characterization, and evaluation of antifouling polymers of 4‐acryloyloxybenzaldehyde with methyl methacrylate

Subramanyam

Mohandoss

Shin

2009

J of Applied Polymer Sci

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“…1989; Chow & Lee 1991; Kitou & Yoshida 1998; Kitou & Okuno 1999; Kitou 1999; Laterra & Bazzalo 1999; Sene et al . 2000; Pramanik et al . 2001; Ismail & Chong 2002; Horimoto et al .…”

Section: Release Of Allelochemicals From Donor Plantmentioning

confidence: 99%

“…However, the growth and productivity of cultured plants has sometimes been reduced by this incorporation. In the latter case, the reduction is partly attributed to the release of phytotoxic substances from the incorporated materials into the soil, resulting in the production and release of phytotoxic substances during decomposition of organic matter by microorganisms in the soil (Achhireddy & Singh 1984;Sato et al 1989;Chow & Lee 1991;Kitou & Yoshida 1998;Kitou & Okuno 1999;Kitou 1999;Laterra & Bazzalo 1999;Sene et al 2000;Pramanik et al 2001;Ismail & Chong 2002;Horimoto et al 2002;Shiraishi et al 2002). In these cases, the phytotoxic chemicals were sometimes identified as phenolic compounds (Chow & Lee 1991;Kitou & Okuno 1999;Sene et al 2000;Ismail & Chong 2002).…”

Section: Release Of Allelochemicals From Donor Plantmentioning

confidence: 99%

Factors affecting phytotoxic activity of allelochemicals in soil

Kobayashi

2004

Weed Biology and Management

197

164

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Allelopathy is the inhibitory or stimulatory effect of a plant (donor) on other plants (receivers) through the chemicals released from the donor plant to the environment, mostly into the soil. These chemicals may reach the receiver plants in various ways, including leaching from plant foliage, exudation from the roots, and decomposition of dead residue of the donor plants. However, allelopathy in soil is a complicated phenomenon that is affected by soil condition, growth condition of the donor and receiver plants and climatic condition. Allelochemicals in soil are adsorbed on soil solids, and metabolized by chemical and biological reactions during the movement in soil. This behavior is affected by various soil factors, such as soil texture, organic and inorganic matter, moisture and organisms, which affect the phytotoxic activity in soil. If an allelochemical can directly affect the growth of receiver plants in soil, then the allelochemical might be present in the soil water so that it is directly available for absorption by the plant. Thus, it is suggested the concentration of an allelochemical in soil water is a dominant factor directly determining the phytotoxic activity in soil, and the concentration is controlled by soil factors that affect the behavior of adsorption, desorption and degradation in soil.

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“…Many investigations have reported that allelopathic compounds are identified from plant residues (Chou & Lin 1976; Chou & Patrick 1976; Tang & Waiss 1978; Alsaadawi et al . 1983; Pramanik et al . 2001), but there are few reports on the movement of allelopathic compounds from plant residue to soil.…”

Section: Resultsmentioning

confidence: 99%

“…Determining whether inhibitors are released from a decaying plant is very difficult, if not impossible, because there is always the possibility that microorganisms change non-toxic compounds to toxic ones (Rice 1984). Many investigations have reported that allelopathic compounds are identified from plant residues (Chou & Lin 1976;Chou & Patrick 1976;Tang & Waiss 1978;Alsaadawi et al 1983;Pramanik et al 2001), but there are few reports on the movement of allelopathic compounds from plant residue to soil. Therefore, these experiments investigate both the movement of the allelopathic compound, coumarin of sweet vernalgrass, from plant residue to soil, and the dynamics of coumarin in soil by measuring the soil content of coumarin and sweet vernalgrass plant residue.…”

Section: Movement Of Coumarin From Sweet Vernalgrass Plant Residue Tomentioning

confidence: 99%

Movement of allelopathic compound coumarin from plant residue of sweet vernalgrass (Anthoxanthum odoratum L.) to soil

Yamamoto

2009

Grassland Science

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This study investigated the movement of coumarin, an allelopathic compound, from the plant residue of sweet vernalgrass (Anthoxanthum odoratum L.) to soil, as well as the dynamics of coumarin in soil. The level of coumarin dissolved from sweet vernalgrass plant residue in both Andosols and Cambisols, which were watered every day, peaked on the fifth day after the beginning of watering, and fell gradually thereafter. Specifically, the coumarin content in Cambisols on the fifth day was 14.2 p.p.m., which is four times the coumarin level found in Andosols. The recovery percentage of coumarin extracted with MeOH from the soil‐treated coumarin water solution was approximately 70% in Cambisols and 35% in Andosols. As the days continued, the recovery rate of coumarin tended to decrease, but not in the disinfected soils. The recovery rate of coumarin in Andosols at temperatures of 25°C and 15°C rapidly decreased on the sixth and 10th days, respectively. These results indicate that the coumarin of sweet vernalgrass plant residue will move into soil easily after rainfall, and that both soil type and the presence of microorganisms are related to the disappearance of coumarin in soil.

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Growth inhibitors in rice‐straw extracts and their effects on Chinese milk vetch (Astragalus sinicus) seedlings

Cited by 10 publications

References 12 publications

Synthesis, characterization, and evaluation of antifouling polymers of 4‐acryloyloxybenzaldehyde with methyl methacrylate

Synthesis, characterization, and evaluation of antifouling polymers of 4‐acryloyloxybenzaldehyde with methyl methacrylate

Factors affecting phytotoxic activity of allelochemicals in soil

Movement of allelopathic compound coumarin from plant residue of sweet vernalgrass (Anthoxanthum odoratum L.) to soil

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