Phenolic acids and terpenoids in the soils of different weed-suppressive circles of allelopathic rice
Phenolic acids and terpenoids in the soils of different weed-suppressive circles of allelopathic rice
复制标题
化感水稻不同杂草抑制圈土壤中的酚酸和萜类化合物。
DOI：
10.1080/03650340.2019.1610560
复制
发表时间：
2020-01-28
影响因子：
2.4
通讯作者：
He, Hai Bin
中科院分区：
文献类型：
--
作者：
Li, Jia Yu;Lin, Shun Xian;He, Hai Bin
以化感水稻PI 312777（PI）和非化感水稻Lemont（Le）为试材，采用群落圈法对不同圈土壤中的酚酸类和萜类化合物进行了测定。采集水稻根际土壤（内圈）和距水稻12 cm的稗草根际土壤（外圈）进行分析。结果表明，PI外圈土壤酚酸类化合物总量显著高于Le，PI外圈土壤苯甲酸类化合物总量高于内圈土壤，肉桂酸类化合物总量低于内圈土壤。PI内、外圈土壤总萜和单萜含量显著高于Le，PI外圈土壤氧化单萜比例高于Le。酚酸类化合物对受体根长的抑制作用大于对受体芽长的抑制作用，而含氧单萜类化合物则相反，低浓度的含氧单萜类化合物增强了酚酸类化合物对受体芽长的抑制作用。以上结果表明，含氧单萜类化合物与酚酸类化合物共同参与了化感水稻的除草作用。
Allelopathic rice 'PI312777' (PI) and non-allelopathic rice 'Lemont' (Le) were used to assess phenolic acids and terpenoids in the soils of different circles using inhibitory-circle method. The rhizosphere soils of rice (inner circle) and barnyard grass at a 12 cm distance from rice (outer circle) were collected for analyses. The results showed total content of phenolic acids in outer circle of PI was significantly higher than that of Le, while the outer soil of PI contained a higher total content of benzoic acid derivatives and a lower total content of cinnamic acid derivatives than the inner soil. Total terpenoid and monoterpene contents in inner and outer circle soils of PI were significantly higher than that of Le, and the ratio of oxygenated monoterpenes in outer soil of PI was higher than that of Le. Furthermore, phenolic acid mixtures showed a more obvious inhibitory effect on root length than on shoot length of the receptor, while oxygenated monoterpenes were opposite, and a low concentration of oxygenated monoterpenes enhanced inhibitory effect of phenolic acids mixtures on shoot length of the receptor. All results suggested oxygenated monoterpenes participated in the weed-suppressive effect together with phenolic acids of allelopathic rice.