Growth and germination inhibitors in rice husks

Kato, Tadahiro; Tsunakawa, Mitsuaki; Sasaki, Nobuki; Aizawa, Hiroyasu; Fujita, Ken‐ichi; Kitahara, Yoshio; Takahashi, Nobutaka

doi:10.1016/0031-9422(77)83010-0

Cited by 140 publications

(80 citation statements)

References 4 publications

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“…This observation concurs with several previous reports. Kato et al (1973) and Kato et al (1977) reported that the herbicidal activity of M B was higher than that of M A in suppressing root growth and the hypocotyl growth of cress at concentrations greater than 3 mM and those of lettuce at concentration greater than 30 mM (Kato-Noguchi et al 2003b). Chung et al (2005) found that both M A and M B exert inhibitory effects on the growth of Leptochloa chinenesis L., Amaranthus retroflexus L., and Cyperus difformis L.…”

Section: Discussionmentioning

confidence: 99%

Comparative efficaciesin vitroof antibacterial, fungicidal, antioxidant, and herbicidal activities of momilatones A and B

Fukuta¹,

Xuan²,

Deba³

et al. 2007

Journal of Plant Interactions

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Momilactones A (M A ) and B (M B ) are phytoalexins derived from rice plant (Oryza sativa) and were considered to be a part of the mechanism of rice self-defense system. The present study was to evaluate the comparative efficacies in vitro of antibacterial, fungicidal, antioxidant, and herbicidal activities of M A and M B . In general, M B shows higher antifungal, antibacterial, and herbicidal action than M A , although its antioxidant property was less than M A . In herbicidal trial, the IC 50 values of M B against germination, shoot and root elongation of barnyardgrass and monochoria were 40.9, 45.5, and 27.5, and 27.1, 17.3, and 0.9 mg, respectively. For M A , these values were 40.3, 35.6, and 55.1, and 43.9, 24.3, and 0.5 mg, respectively. For antifungal activity, momilactone B (IC 50 : 1.2, 123.9, and 53.4 mg) exerted significantly greater inhibition than M A (IC 50 : 78.1, 198.1, and 95.3 mg) against Botrytis cinerea, Fusarium solani, Colletrotrichum gloeosporioides, respectively, except for Fusarium oxysporum that both M A and M B showed no marked difference. In addition, M B exhibited significantly stronger antibacterial activity than M A against Pseudomonus ovalis, Bacillus cereus, and Bacillus pumilus, whereas the inhibitory activity of the two compounds was similar against Escherichia coli. Both M A and M B exerted rather weak antioxidant activity (EC 50 was 783.9 and 790.7 mg, respectively), of which M A showed a slightly stronger antioxidant activity than M B . This study is the first to examine antifungal, antibacterial, and antioxidant activities of two phytoalexins, as well as their comparative efficacies against growth of the noxious weeds barnyardgrass and monochoria.

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Section: Discussionmentioning

confidence: 99%

Comparative efficaciesin vitroof antibacterial, fungicidal, antioxidant, and herbicidal activities of momilatones A and B

Fukuta¹,

Xuan²,

Deba³

et al. 2007

Journal of Plant Interactions

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“…10) Momilactones A and B have been isolated from the seed husk of rice (Oryza sativa) and found to be inhibitors of plant germination and growth. 10,11) To the best of our knowledge, this is the first isolation of momilactones A and B from a plant other than rice. Momilactones are accumulated in rice during vegetative growth 12,13) and are released into the soil, causing growth inhibition of neighboring plants.…”

mentioning

confidence: 88%

Momilactone A and B as Allelochemicals from MossHypnum plumaeforme: First Occurrence in Bryophytes

Nozaki

Hayashi

Nishimura

et al. 2007

Bioscience, Biotechnology, and Biochemistry

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“…Momilactones A and B have been demonstrated as plant growth inhibitors, but the inhibitory of momilactone B was stronger than momilactone A (Kato-Noguchi et al 2008a;Kato et al 1977;Fukuta et al 2007;Toyomasu et al 2008). In quantity, the endogenous concentrations of momilactone A was greater than momilactone B (Lee et al 1999;Chung et al 2006;Kato-Noguchi et al 2008a), but the secretion rates of momilactone A > momilactone B (Kato-Noguchi et al 2008a).…”

Section: Correlation Coefficientsmentioning

confidence: 99%

Allelopathic momilactones A and B are implied in rice drought and salinity tolerance, not weed resistance

Xuan

Minh

Anh

et al. 2016

Agron. Sustain. Dev.

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Momilactones A and B are allopathic phytoalexins that are involved in weed resistance of rice. There is little knowledge on the roles of momilactones A and B on drought and salinity tolerance. Here we analyzed the contents of momilactones A and B in 30 rice cultivars of various origins including hybrid, foreign, sticky, local, upland sticky, and upland rice of the two subtypes Indica and Japonica. Momilactone contents were compared with salinity tolerance, drought tolerance, weed resistance, total flavonoids, total phenols, and antioxidant capacity. Results show that, contrary to the current knowledge, momilactones A and B have very low correlation with weed resistance, with r coefficients of 0.001 and 0.09, respectively. Correlation was higher with drought tolerance, of 0.65 for momilactones A and 0.27 for momilactones B. Overall we conclude that the development of bioactive reagents derived from momilactones A and B is more potent to reduce salinity and drought stresses than weed tolerance in rice.

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Growth and germination inhibitors in rice husks

Cited by 140 publications

References 4 publications

Comparative efficaciesin vitroof antibacterial, fungicidal, antioxidant, and herbicidal activities of momilatones A and B

Comparative efficaciesin vitroof antibacterial, fungicidal, antioxidant, and herbicidal activities of momilatones A and B

Momilactone A and B as Allelochemicals from MossHypnum plumaeforme: First Occurrence in Bryophytes

Allelopathic momilactones A and B are implied in rice drought and salinity tolerance, not weed resistance

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