Zhang Liang, Chen Ke, Li Tianrui, Yuan Shuren, Li Chenyang, Bai Lianyang, Wang Lifeng
Longping Branch, College of Biology, Hunan University, Changsha, China.
Key Laboratory of Indica Rice Genetics and Breeding in the Middle and Lower Reaches of Yangtze River Valley, Ministry of Agriculture and Rural Affairs, Hunan Rice Research Institute, Hunan Academy of Agricultural Sciences, Changsha, China.
Front Plant Sci. 2023 Sep 25;14:1271303. doi: 10.3389/fpls.2023.1271303. eCollection 2023.
is an annual weed in paddy fields, which can engage in competition with rice, leading to a severe yield reduction. However, theunderlying mechanism governing this interaction remain unknown.
In this study, we investigated the mutual inhibition between rice and the weed undermono-culture and co-culture conditions. We found that the root exudates of both species played essential roles in mediating the mutual inhibition. Further metabolomic analysis identified a significant number of differential metabolites. These metabolites were predominantly enriched in the phenylpropanoid and flavonoid biosynthesis pathways in weed and rice. Transcriptomic analysis revealed that the differentially expressed genes responding to the interaction were also enriched in these pathways.
Phenylpropanoid and flavonoid biosynthesis pathways are associated with allelopathy, indicating their pivotal role in the response of rice-weed mutual inhibition.
Our findings shed light on the conserved molecular responses of rice and during theirinteraction, provide evidence to dissect the mechanisms underlying the allelopathic interaction and offer potential strategies for weed management in rice paddies.
是稻田中的一年生杂草，会与水稻竞争，导致产量严重下降。然而，这种相互作用的潜在机制仍不清楚。
在本研究中，我们调查了单作和共作条件下水稻与杂草之间的相互抑制作用。我们发现两种植物的根系分泌物在介导这种相互抑制中起着至关重要的作用。进一步的代谢组学分析鉴定出大量差异代谢物。这些代谢物主要富集在杂草和水稻的苯丙烷类和黄酮类生物合成途径中。转录组分析表明，响应这种相互作用的差异表达基因也富集在这些途径中。
苯丙烷类和黄酮类生物合成途径与化感作用有关，表明它们在水稻-杂草相互抑制反应中起关键作用。
我们的研究结果揭示了水稻和在相互作用过程中保守的分子反应，为剖析化感相互作用的潜在机制提供了证据，并为稻田杂草管理提供了潜在策略。
