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| 水稻关键化感物质稻壳酮的研究综述 |
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林娴慧1, 庞勇滔2, 卢凤来2,3, 丁朝晖1,2, 曾任森1,2, 宋圆圆1*
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1. 福建农林大学 作物科学学院, 福州 350002;2. 华南农业大学 热带亚热带生态研究所, 广州 510642;3. 广西植物功能物质研究与利用重点实验室, 广西壮族自治区
中国科学院 广西植物研究所, 广西 桂林 541006
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| 摘要: |
| 杂草给水稻(Oryza sativa)生产带来严重损失,利用水稻自身化感作用被认为是对环境友好的杂草控制方法。稻壳酮A和B是水稻抑制杂草的主要化感物质,其中稻壳酮B是至今发现最高效的天然除草剂之一,具有很好的应用潜力。稻壳酮B可以从水稻根系释放到土壤中抑制周围稗草等植物的种子萌芽和生长。稻壳酮B的浓度大于3 nmol·mL-1时就能抑制水芹和莴苣的根和胚轴生长,同时稻壳酮A和B是水稻重要的植保素,可有效抑制水稻病原菌比如稻瘟病菌(Magnaporthe grisea)等。此外,稻瘟病菌感染可诱导水稻合成更多的稻壳酮。该文主要对国内外有关水稻化感物质稻壳酮的性质、分布状况、化感作用、生物合成途径、检测方法、人工合成方法和影响因素等方面的研究进行了综述。在此基础上进一步探讨稻壳酮研究过程中简捷检测方法、诱导因子和人工合成等问题。 |
| 关键词: 水稻, 化感物质, 稻壳酮, 植保素 |
| DOI：10.11931/guihaia.gxzw201801016 |
| 分类号:Q946.8, S451 |
| 文章编号:1000-3142(2019)04-0548-09 |
| Fund project:国家自然科学基金(31470477,31670414); 福建省中青年教师教育科研基金(K8015058A); 福建省高校杰出青年科研人才计划项目(闽教科〔2015〕54号); 福建省杰出青年科学基金(2017J06010)[Supported by the National Natural Science Foundation of China(31470477,31670414); Fujian Provincial Young Faculty Education and Research Fund(K8015058A); Excellent Youth Science Program of Fujian Provincial University([2015]54); Fujian Provincial Excellent Youth Science Foundation(2017J06010)]。 |
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| Review on momilactones of key allelochemicals in rice allelopathy |
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LIN Xianhui1, PANG Yongtao2, LU Fenglai2,3, DING Chaohui1,2,
ZENG Rensen1,2, SONG Yuanyuan1*
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1. College of Crop Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China;2. Institute of Tropical &3.Subtropical Ecology, South
China Agricultural University, Guangzhou 510642, China;4.3. Guangxi Key Laboratory of Functional Phytochemicals Research and Utilization,
Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guilin 541006, Guangxi, China
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| Abstract: |
| Weeds in paddy field cause severe damage to rice(Oryza sativa)production. Use of rice allelopathy is considered the most environmentally friendly approach for weed control. Momilactones A and B are key allelochemicals produced by rice plants, and momilactone B is the most effective natural phytotoxin with great potential to be used as natural herbicides. Momilactone B can be released into rice rhizosphere to inhibit the germination and growth of barnyardgrass and other plants. It inhibits the root and hypocotyl growth of seedlings of cress and lettuce at concentrations ≥3 nmol·mL-1. Moreover, momilactones A and B are phytoalexins showing antifungal activity against blast pathogen Magnaporthe grisea. This paper reviewed important aspects in various fields of momilactones research, including its characteristics, allelopathy, biosynthesis pathway, detection, synthesis method and influencing factors. Some important issues in momilactone research including rapid and sensitive detection, induced factors and chemical synthesis are also discussed. |
| Key words: rice, allelochemical, momilactones, phytoalexin |
