1
|
Bai H, Ni X, Han J, Luo D, Hu Y, Jin C, Li Z. Phytochemical profiling and allelopathic effect of garlic essential oil on barnyard grass (Echinochloa crusgalli L.). PLoS One 2023; 18:e0272842. [PMID: 37098009 PMCID: PMC10128991 DOI: 10.1371/journal.pone.0272842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 07/08/2022] [Indexed: 04/26/2023] Open
Abstract
In agriculture, barnyard grass (Echinochloa crusgalli L.) is one of the most harmful weeds in rice fields now. In order to identify active ingredients which had inhibiting effect on barnyard grass (Echinochloa crusgalli L.), we evaluated several possible natural plant essential oils. Essential oils from twelve plant species showed inhibitory activity against barnyard grass seedlings and root length. The garlic essential oil (GEO) had the most significant allelopathic effect (EC50 = 0.0126 g mL-1). Additionally, the enzyme activities of catalase (CAT), peroxidase (POD) and superoxide dismutase (SOD) increased during the first 8 hours of treatment at a concentration of 0.1 g mL-1 and then declined. The activities of CAT, SOD and POD increased by 121%, 137% and 110% (0-8h, compared to control), and decreased (8-72h, compared to the maximum value) by 100%, 185% and 183%, respectively. The total chlorophyll content of barnyard grass seedlings decreased by 51% (0-72h) continuously with the same dosage treatment. Twenty constituents of GEO were identified by gas chromatography-mass spectrometry, and the herbicidal activity of two main components (diallyl sulfide and diallyl disulfide) was evaluated. Results showed that both components had herbicidal activity against barnyard grass. GEO had a strong inhibitory effect (~88.34% inhibition) on barnyard grass growth, but safety studies on rice showed it did not have much inhibitory effect on rice seed germination. Allelopathy of GEO provide ideas for the development of new plant-derived herbicides.
Collapse
Affiliation(s)
- Haodong Bai
- Collaborative Innovation Center for Field Weeds Control, Hunan University of Humanities and Science, Loudi, Hunan, China
- Hunan Provincial Key Laboratory for Biology and Control of Weeds, Hunan Academy of Agricultural Sciences, Changsha, Hunan, China
| | - Xianzhi Ni
- Collaborative Innovation Center for Field Weeds Control, Hunan University of Humanities and Science, Loudi, Hunan, China
- Hunan Provincial Key Laboratory for Biology and Control of Weeds, Hunan Academy of Agricultural Sciences, Changsha, Hunan, China
| | - Jincai Han
- Collaborative Innovation Center for Field Weeds Control, Hunan University of Humanities and Science, Loudi, Hunan, China
| | - Dingfeng Luo
- Collaborative Innovation Center for Field Weeds Control, Hunan University of Humanities and Science, Loudi, Hunan, China
| | - Yihong Hu
- Hunan Provincial Key Laboratory for Biology and Control of Weeds, Hunan Academy of Agricultural Sciences, Changsha, Hunan, China
| | - Chenzhong Jin
- Collaborative Innovation Center for Field Weeds Control, Hunan University of Humanities and Science, Loudi, Hunan, China
- Hunan Provincial Key Laboratory for Biology and Control of Weeds, Hunan Academy of Agricultural Sciences, Changsha, Hunan, China
| | - Zuren Li
- Collaborative Innovation Center for Field Weeds Control, Hunan University of Humanities and Science, Loudi, Hunan, China
- Hunan Provincial Key Laboratory for Biology and Control of Weeds, Hunan Academy of Agricultural Sciences, Changsha, Hunan, China
| |
Collapse
|
2
|
Acceleration of germination of super-hard rice cultivar EM10 by soaking with red onion. Biosci Biotechnol Biochem 2011; 75:572-4. [PMID: 21389608 DOI: 10.1271/bbb.100621] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Red onion accelerated the germination of rice seeds and inhibited microbial infestation during germination. After germination with red onion for 16 h at 35 °C, super-hard rice EM10 showed a higher germination ratio (2.3 times), and it contained more GABA (2.3 times) and glucose (2.9 times) than that soaked without onion. Due to soaking with red onion, germinated EM10 was fortified with quercetin (18 mg/100 g).
Collapse
|