JOURNAL OF PLANT GROWTH REGULATION
·
2017
·Vol. 37
·期 3
·745-754
·
IF 2.073
Zhang Qi,Li Li,Li Jiayu,Wang Haibin,Fang Changxun,Yang Xiaoyan,He Haibin
An allelopathic rice PI312777 and a non-allelopathic rice Lemont were hydroponically cultured and treated with extracts of seeds and tissues and root exudates of barnyard grass ( Echinochloa crus-galli , BYG) to induce an allelopathic response. The results of bioassays showed that the % inhibition of two rice leaf extracts was significantly ( p < 0.05) increased by treatment with BYG root exudates. This induced trait was dosage- and time-dependent. The highest % inhibition for both PI312777 and Lemont was obtained following treatment with 15 mL of BYG root exudates for 2 days. Under these conditions, total allelopathy (TA) values of PI312777 on root length, plant height, and plant dry weight of BYG were 73.39, 68.01, and 70.42%, respectively, and induced allelopathy (IA) values were 21.53, 17.04, and 16.62%, respectively, accounting for 24–29% of TA. Correspondingly, TA values of Lemont were 28.38, 21.38, and 23.38%, respectively, and IA values were 14.49, 11.37, and 12.11%, respectively, accounting for 51–53% of TA. The % inhibition of two rice culture solutions was in agreement with the results of their leaf extracts. The total contents of 7 phenolic acids in the culture solutions of PI312777 and Lemont were 2.18 and 1.47 times, respectively, as much as those in the control solutions. The phenylalanine ammonia-lyase ( PAL ) gene in PI312777 leaves was significantly up-regulated after induction treatments. The results indicated that rice allelopathy is a chemical induction mechanism, and confirmed that chemical induction to raise rice allelopathy is a practical and feasible method.
研究领域:
植物学
·
农业科学
·
分子生物学
✓ 已验证
产品关联
DOI
高影响因子
LWT-FOOD SCIENCE AND TECHNOLOGY
·
2022
·
IF 6.056
Yanbin Wang,Yifeng Zhou,Yuchuan Qin,Liling Wang
The purpose of this study was to predict the optimal storage conditions for inhibiting aflatoxin production in upland rice seeds inoculated with Aspergillus flavus . The effects of storage conditions including moisture (A), temperature (B) and incubation time (C) on aflatoxin (AFG1, AFG2, AFB1, AFB2 and AFTOT) production in upland rice seed after inoculation of A. flavus were studied by response surface methodology (RSM) and Box-Behnken Design (BBD). The concentration range of AFG1, AFG2, AFB2, AFB1 and AFTOT were 0.031–9.078 μg/kg, 0–2.766 μg/kg, 0.021–3.478 μg/kg, 1.145–43.433 μg/kg and 1.197–58.755 μg/kg, respectively. Analysis of model variance indicated that moisture and incubation time (AC) exhibited an extremely significant interaction effect on AFG1, AFB2, AFB1 and AFTOT ( p < 0.0001). Multiple regression analysis showed that AFG1, AFG2, AFB1, and AFTOT were the least under the incubation temperature of 35 °C or 15 °C, incubation time less than 15 d, and moisture less than 10% or 10.2%, respectively. After best point prediction and validation, the minimum total aflatoxin (AFTOT) concentration was close to 0 μg/kg under the predicted conditions (A = 35 °C, B = 15 days, C = 10%).
研究领域:
食品科学
·
真菌学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2020
·
IF 4.192
Yafu Tang,Shanmin Hou,Yuechao Yang,Dongdong Cheng,Bin Gao,Yongshan Wan,Yuncong C. Li,Yuanyuan Yao,Shugang Zhang,Jiazhuo Xie
Although solid-phase activation of lignite using a nanocatalyst has great potential in producing low-cost and sustainable humic acid, the large-scale application of this technology still faces challenges because of the high price and toxicity of the nanocatalyst. Additionally, the specific molecular components of humic acid in activated lignite remain unknown. In this work, a multifunctional molybdate-phosphorus hierarchical hollow nanosphere (Mo-P-HH) catalyst was successfully manufactured by a simple way followed by phosphorization. In comparison with a commercial Pd/C catalyst, the multifunctional Mo-P-HH catalyst was more effective in producing water-soluble humic acid with small molecular functional groups from lignite via solid-phase activation. Moreover, Fourier transform ion cyclotron resonance mass spectrometry revealed the molecular compositions of humic acid in activated lignite. Compared with that from raw lignite, the humic acid after Mo-P-HH activation had less aromatic structure but higher content of lipids, proteins, amino sugar, and carbohydrates. In addition, the activated humic acid simulated seed germination and seedling growth. Therefore, this study provided a high-performance hierarchical hollow nanocatalyst for activation of humic acid and also offered the theoretical basis for the application of humic acid in agriculture.
研究领域:
环境科学
·
农业科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Today Chemistry
·
2024
·
IF 6.7
Hui Zhu,Yuanyuan Zhao,Siqi He,Zhe Yang,Sha Ouyang,Yuexiang Xi,Chunli Xin,Maxim S. Molokeev,Ming Cheng,Xiaoyan Chen,Gemechu Deressa Edossa,Mao Xia,Zhi Zhou
Cr 3+ -activated near-infrared (NIR) phosphors have great potential in plant lighting, noninvasive detection, iris recognition, etc. Herein, an aluminoborate host material with a wide band gap (E g = 4.60 eV) and high Debye temperature is selected to prepare a NIR phosphor Al 5 BO 9 : Cr 3+ (ABO: Cr 3+ ). The phosphor exhibits typical intermediate crystal field luminescence and has a high degree of matching with plant phytochrome. The photoluminescence intensity at 150 °C retains 91.1 % at room temperature. In addition, the spectral redshift (730 nm–770 nm) is achieved through the crystal field modulation, which is beneficial to broaden its application scenarios, such as plant antiviral immunity, night vision and noninvasive detection. Finally, the rice cultivation experiment confirms that the supplement of NIR light promotes growth, stress resistance and leaf angle of rice seedlings.
研究领域:
材料科学
·
植物学
·
农业科学
✓ 已验证
DOI
高影响因子
MOLECULAR PLANT PATHOLOGY
·
2016
·Vol. 19
·期 1
·49-58
·
IF 4.335
Shanshan Xie,Haoyu Zang,Huijun Wu,Faheem Uddin Rajer,Xuewen Gao
Summary Recent investigations have demonstrated that bacteria employ the volatile compounds they produce during interactions with other organisms, such as plants, fungi, nematodes and bacteria. However, studies focused on the antibacterial activity of plant growth-promoting rhizobacteria (PGPR) volatiles against bacterial phytopathogens are still rare. In this study, Bacillus strain D13, which is antagonistic to Xanthomonas oryzae pv. oryzae ( Xoo ), was isolated and screened. Volatile compounds emitted from strain D13 reduced the colony diameter and cell motility of Xoo cultured in divided Petri plates. Transmission electron micrograph analysis showed concentration in cytoplasm and altered surface morphology in the majority of Xanthomonas cells after co-cultivation with strain D13. Transcriptional expression of virulence-associated genes in Xoo was repressed. Based on gas chromatography/mass spectrometry (GC/MS) analysis, 12 volatile compounds specifically produced by strain D13 were identified. Among them, decyl alcohol and 3,5,5-trimethylhexanol inhibited the growth of Xoo at minimum inhibitory amounts of 0.48 and 2.4 mg, respectively. Furthermore, transcriptional expression of virulence-associated genes was also repressed by decyl alcohol and 3,5,5-trimethylhexanol. These results are useful for a better understanding of the biocontrol mechanisms of Bacillus .
研究领域:
微生物学
·
植物病理学
·
农学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）