Article
Plant Sciences
Shreedhar S. S. Otari, Suraj P. P. Devkar, Suraj B. B. Patel, Savaliram G. G. Ghane
Summary: This study developed an efficient method for in vitro propagation of B. floribunda and investigated the effects of different plant growth regulatory substances and elicitors on its regeneration and production of bioactive compounds. The results showed that MS medium supplemented with 2.0 mg/l BAP and 2.0 mg/l KIN promoted shoot and root growth, while 0.5 mg/l IAA, 0.5 mg/l IBA, and 1.0 mg/l NAA stimulated root growth. After acclimatization, the survival rate of B. floribunda plantlets reached 95%. The highest content of total saponins, triterpenoid saponin glycosides, and stigmasterol was achieved in specific treatment combinations. The findings highlight the potential memory-enhancing properties of B. floribunda and its potential as a substitute for B. monnieri.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Biology
Yanping Mao, Yuping Yang, Yuchan Li, Yiguan Zhang, Ping Wei, Hua Chen, Dabin Hou
Summary: In this study, it was revealed that methyl jasmonate (MeJA) significantly increased the accumulation of saikosaponins (SSs) in Bupleurum chinense DC. roots. A comparative transcriptome analysis identified 104,057 unigenes, of which 4053 were differentially expressed genes (DEGs). The majority of DEGs showed downregulated expression after MeJA treatment, and functional annotation indicated their involvement in stress responses and development. Furthermore, 88 DEGs encoding enzymes in the SS synthesis pathway and 99 DEGs encoding transcription factors (TFs) with different expression patterns were identified. Integrative analysis revealed that 20 DEGs involved in the SS synthesis pathway and 12 DEGs encoding TFs exhibited strong correlations with SS contents, suggesting their importance in SS biosynthesis and regulation.
Article
Microbiology
Zengcai Liu, Ruipeng Liu, Xinyu Tong, Li Zou
Summary: This study demonstrated that methyl jasmonate (MeJA) is an effective inducer of triterpenoid biosynthesis in Sanghuangporus baumii. The total triterpenoid content was highest when the MeJA concentration was 250 μmol/L. MeJA also inhibited the biosynthesis of cis-Zeatin and gibberellins, further confirming its role in triterpenoid accumulation. This research provides valuable insights into enhancing triterpenoid production and the mechanism of MeJA-induced triterpenoid biosynthesis.
Article
Plant Sciences
Qingzhu Li, Junxu Xu, Yuhong Zheng, Yongchun Zhang, Youming Cai
Summary: The study demonstrated a significant impact of MeJA treatment on the pathways related to galanthamine synthesis in L. longituba, especially the dual influence of MeJA on the JA synthesis/JA signaling pathway and galanthamine biosynthesis pathway.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Horticulture
Jiangping Mao, Chundong Niu, Shiyue Chen, Yichao Xu, Abid Khan, Qiaoli Zuo, Chaojun Wang, Mingyu Han, Lu Bao, Dong Zhang
Summary: MeJA treatment promotes lateral root development in Malus hupehensis by increasing levels of auxin and zeatin-riboside, while decreasing gibberellin levels. Additionally, MeJA treatment upregulates the expression of key genes related to root development, ultimately leading to enhanced lateral root growth.
SCIENTIA HORTICULTURAE
(2021)
Article
Agriculture, Multidisciplinary
Hilton Cesar Rodrigues Magalhaes, Elenilson Godoy Alves Filho, Aline Oliveira, Silvia Leticia Rivero Meza, Deborah S. Garruti, Eduardo Purgatto
Summary: The current study evaluates the roles of methyl jasmonate (MeJA) in the production of volatile organic compounds (VOC) during the ripening of grape tomatoes. The association between MeJA and ethylene in the aroma formation, specifically in VOC from the carotenoid pathway, was observed. The expression of fatty acid pathway genes was reduced by 1-MCP, even in the presence of MeJA. MeJA and MeJA+1-MCP treatments led to an increase in volatile C6 compounds and the levels of 6-methyl-5-hepten-2-one derived from lycopene, indicating an ethylene-independent biosynthetic process.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2023)
Article
Plant Sciences
Faroza Nazir, Badar Jahan, Noushina Iqbal, Ashish B. Rajurkar, Manzer H. Siddiqui, M. Iqbal R. Khan
Summary: Methyl jasmonate (MeJA) plays an important role in the tolerance mechanisms of rice against arsenic (As) stress, protecting the rice from As-induced toxicity and improving its defense systems. The positive effects of MeJA on carbohydrate metabolism, photosynthesis, and growth under As stress are the result of its interaction with ethylene biosynthesis, reducing oxidative stress-induced cellular injuries and cell deaths.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2023)
Article
Plant Sciences
Paal Krokene, Ketil Kohmann, Ngan Bao Huynh, Melissa H. Mageroy
Summary: The large pine weevil is a major pest in commercial forestry and traditional pesticide application is being phased out. This study explored alternative plant protection strategies and found that applying methyl jasmonate on 2-year-old Norway spruce plants can significantly enhance inducible defenses and inhibit sapwood growth. The effect of methyl jasmonate was stronger compared to salicylic acid and oxalic acid.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Horticulture
Xiaoya Tao, Qiong Wu, Jiayin Li, Di Wang, Sanusi Shamsudeen Nassarawa, Tiejin Ying
Summary: MeJA treatment accelerated fruit ripening by enhancing ethylene production and up-regulating the genes associated with ethylene biosynthesis and signal transduction during postharvest tomatoes ripening.
SCIENTIA HORTICULTURAE
(2021)
Article
Microbiology
Hui Liu, Huimin Tang, Xiaozhen Ni, Yajie Zhang, Yingchao Wang
Summary: Hormonal regulation and symbiotic relationships, particularly with arbuscular mycorrhizal fungi (AMF), play a significant role in enhancing the saline-alkali resistance of plants. This study found that a certain concentration of methyl jasmonate (MeJA) can further enhance the beneficial effects of AMF inoculation on tall fescue by regulating biomass, proline, total phenolic, and malondialdehyde (MDA) concentration. However, excessive MeJA concentrations may have negative effects. These findings provide valuable insights into the impact of biological and chemical priming treatments on plant performance under saline-alkali stress.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Microbiology
Xiaolan Xu, Fengli Zhu, Yuxuan Zhu, Yujie Li, Hao Zhou, Shilin Chen, Junshan Ruan
Summary: Ganoderma lucidum is a traditional Chinese medicine containing ganoderma triterpenoids. This study analyzed the chemical composition and transcriptomes of mycelia, primordia, and fruiting bodies of G. lucidum. Correlation analysis revealed that certain transcription factors showed positive or negative correlation with the content of total triterpenoids. Furthermore, overexpression of a specific gene in Pichia pastoris decreased the production of lanosterol, suggesting its role as a negative regulator in ganoderma triterpenoid biosynthesis.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Food Science & Technology
Xiao-chen Yin, Shu-juan Ji, Shun-chang Cheng, Qian Zhou, Xin Zhou, Man-li Luo, Ming-jie Ma, Mei-Si Hu, Bao-dong Wei
Summary: The study demonstrated that exogenous methyl jasmonate (MeJA) can enhance the synthesis of aromatic esters in 'Nanguo' pears by regulating the activity and expression of enzymes involved in ethylene biosynthesis, indicating a close connection between MeJA, ethylene production, and aroma enhancement in fruits.
INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY
(2021)
Article
Plant Sciences
Chia-Hao Chang, Yi-Chieh Lee, George Hsiao, Li-Kwan Chang, Wei-Chiung Chi, Yuan-Chung Cheng, Shu-Jung Huang, Tai-Chou Wang, Yi-Shan Lu, Tzong-Huei Lee
Summary: This study investigated the liquid-state fermented products produced by the fungal strain Alternaria alstroemeriae Km2286 isolated from the medicinal herb Atriplex maximowicziana Makino. Chromatographic separation resulted in the isolation of compounds 1-9, including four undescribed perylenequinones. Compound 1-6 exhibited antiviral activities against Epstein-Barr virus and compounds 1-4, 6, and 7 showed inhibitory activity of nitric oxide production in lipopolysaccharide-induced microglial BV-2 cells without significant cytotoxicity. This is the first report of perylenequinone-type compounds with potent anti-EBV and anti-neuroinflammatory activities.
JOURNAL OF NATURAL PRODUCTS
(2022)
Article
Nutrition & Dietetics
Tingting Tang, Hongsheng Zhou, Libin Wang, Jing Zhao, Lijie Ma, Jun Ling, Guofeng Li, Wen Huang, Pengxia Li, Yingtong Zhang
Summary: The roles of methyl jasmonate (MeJA) and prohydrojasmon (PDJ) in postharvest color development and anthocyanins biosynthesis in the skin of peach fruit were investigated in this study. The results showed that both MeJA and PDJ treatments positively affected the red color formation in peach fruits due to enhanced anthocyanin accumulation. This effect was attributed to increased enzyme activities and transcript abundance of anthocyanin biosynthesis-related genes.
FRONTIERS IN NUTRITION
(2022)
Article
Microbiology
Xing-Rong Peng, Qian Wang, Hai-Guo Su, Lin Zhou, Wen-Yong Xiong, Ming-Hua Qiu
Summary: This study focused on the lanostane triterpenoids from Ganoderma applanatum and isolated forty highly oxygenated compounds, including sixteen new compounds. The structures of these compounds were identified and their anti-adipogenesis activities were evaluated. Some compounds exhibited stronger effects than the positive control and a key role of the A-seco-23 -> 26 lactone skeleton in anti-adipogenesis activity was established.
