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(-)-Loliolide,the most ubiquitous lactone,is involved in barnyardgrass-induced rice allelopathy

(-)-Loliolide,the most ubiquitous lactone,is involved in bar...

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中国第九届植物化感作用学术研讨会

作者： LI Leilei ZHAO Huanhuan KONG Chuihua College of Resources and Environmental Sciences China Agricultural University

Neighbor detection and allelochemical response are important mediators in plant-plant *** increasing knowledge of plant allelochemicals in response to the presence of competitors involved in the neighbor-derived signaling chemicals,less is known about which signaling chemicals are responsible for the neighbor-induced allelochemical ***,we experimentally demonstrated(-)-loliolide,a carotenoid metabolite,as a signaling chemical in barnyardgrass-rice allelopathic *** production of rice allelochemicals momilactone B and tricin was increased in the presence of five biotypes of barnyardgrass.(-)-Loliolide was found in all biotypes of barnyardgrass and their root exudates and rhizosphere *** were significant positive relationships between rice allelechemicals and(-)-loliolide concentrations across biotypes of ***,(-)-loliolide elicited the production of momilactone B and *** expression of key genes involved in the biosynthesis of momilactone B(CPS4,KSL4,CYP99 A2,CYP99 A3 and MAS) and tricin(CYP93 G1,CYP75 B3,CYP75 B4 and ROMT9) was up-regulated by(-)-*** findings suggest that(-)-loliolide as a signaling chemical participates in barnyardgrass-rice allelopathic *** the signaling chemical,allelopathic rice can detect competing barnyardgrass and respond by increased allelochemical levels to provide an advantage for its own *** a mechanism may contribute to developing ecological weed control strategies for sustainable agriculture.

关键词： rice allelopathy (-)-loliolide neighbor detection

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BIOASSAY METHODS COMPARISON ON EVALUATION ALLELOPATHIC POTENTIAL OF rice(ORYZA) GERMPLASM

BIOASSAY METHODS COMPARISON ON EVALUATION ALLELOPATHIC POTEN...

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中国第三届植物化感作用学术研讨会、第八届全国杂草科学大会、联合国粮农组织——中国“水稻化感作用论坛”

作者： GAVEH ELI DONGHYUN SHIN KILUNG KIM Division of Plant Biosciences College of Agriculture and Life SciencesKyungpook National UniversityDaegu 702-701Republic of Korea

rice production has been becoming highly depending on *** in rice may be one of the potential biological ways to weed *** or evaluating the allelopathic potential rice variety is the first step.

关键词： rice allelopathy bioassay methods comparison

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Utility of Allelopathic rice Cultivars in Suppressing of Barnyardgrass(Echinochloa crus-galli)and Rreducing the Rate of Herbicide

Utility of Allelopathic Rice Cultivars in Suppressing of Bar...

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中国第四届植物化感作用学术研讨会

作者： Yiqing Guo Donghyung Shin Kilung Kim Dept.of Agronomy College of Agriculture and Life sciencesKyungpook National University Daegu 702-701Republic of Korea Biotechnology & Genetic Germplasm Research Institute Yunnan Academy of Agricutural Sciences

Pot experiment and herbicide bioassay were conducted to compare the barnyardgrass suppression by 3 rice ***(allelopathic),*** (non-allelopathic)and cv.K21(newly bred potent allelopathic).The consequence of

关键词： rice allelopathy barnyardgrass reduce rates of herbicide

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