TREES-STRUCTURE AND FUNCTION
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2021
·Vol. 36
·期 2
·711-721
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IF 2.529
Xu Chenyi,Ma Yuandan,Tian Zhengfeng,Luo Qingyun,Zheng Tiefeng,Wang Bin,Zuo Zhaojiang
Key message The four chemotypes of adult C. camphora released different monoterpenes which protected these plants against high temperature by lowering ROS levels and maintaining photosynthetic abilities. Abstract High temperature seriously impacts plant growth and development, and terpenes are believed to improve plant thermotolerance through indoor experiments using seedlings. To uncover the actual protection effects of monoterpenes on outdoor adult plants, we investigated the monoterpene emissions, reactive oxygen species (ROS) metabolism, and photosynthetic abilities in four chemotypes of adult Cinnamomum camphora that were blocked monoterpene synthesis by fosmidomycin (Fos) under high temperature in summer (the mean highest temperature at about 38.2 °C). Eucalyptol (EuL), linalool (Lnl), borneol (BeL), and camphor (CmR) chemotypes of C. camphora released an abundance of monoterpenes, with eucalyptol, linalool, endo-borneol, and camphor as the typical monoterpene, respectively. When the four chemotypes of C. camphora were treated with Fos, their monoterpene emission was inhibited remarkably, with disappearance of some monoterpenes. In that case, the content of O 2 − , H 2 O 2 , and thiobarbituric acid reactive substance (TBARS) in the four chemotypes of C. camphora significantly increased although antioxidant enzyme activities remarkably increased, and the photosynthetic abilities significantly decreased by declining the quantum production and electron transport in photosystem II and increasing the dissipation of absorbed light energy. Among the four chemotypes, monoterpenes might play the maximum roles in CmR lowering ROS levels and in EuL maintaining photosynthesis. It can be speculated that monoterpenes can protect adult C. camphora against high temperature by lowering ROS levels and maintaining photosynthetic abilities.
研究领域:
植物生理学
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环境科学
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产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2024
·
IF 3.8
Shufen Wang,Jinrou Wei,Hongzhao Xie,Xiaopeng Chen,Jie zhen Liang,Xiaojie Wei,Jie Huang,Linlin Wang
The phase equilibrium relationships of resin systems are indispensable for resin tapping, distillation, and investigating the release of terpenes in biogenic volatile organic compounds (BVOCs). Herein, we obtained the vapor–liquid equilibrium (VLE) data of monoterpene-sesquiterpene systems that contain resin acid by a headspace gas chromatography (HS-GC). There is no azeotropic behavior between terpenes, and abietic acid was found to inhibit the volatilization and separation of terpenes. Furthermore, the saturated vapor pressure of the systems almost triples when the experimental temperature increases from 313.15 to 333.15 K, which may exacerbate terpene emissions in ecosystems. Additionally, the thermodynamic consistency of the VLE values was confirmed by van Ness test, and the experimental data were correlated using NRTL, UNIQUAC, and Wilson activity coefficient models, while the Conductor-like Screening Model for Real Solvents (COSMO-RS) model was utilized for predictions. All of the data satisfy thermodynamic consistency, and the correlation results and prediction results demonstrate good adherence of the activity coefficient models to experimental values and the positive capacity of COSMO-RS in predicting the VLE relationship for the pine resin systems, respectively.
研究领域:
生态学
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化学工程
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植物学
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DOI
高影响因子
PLANT CELL AND ENVIRONMENT
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2024
·
IF 6
Kai Wang,Wenzi Ren,Liang Hong,Qingao Wang,Rajendra Ghimire,Matti Haapanen,Minna Kivimäenpää,Pengfei Wu,Xiangqing Ma,Fred O. Asiegbu
Norway spruce is an important coniferous species in boreal forests. Root and stem rot diseases caused by the necrotrophic pathogen Heterobasidion parviporum threaten the wood production of Norway spruce which necessitates the search for durable control and management strategies. Breeding for resistant traits is considered a viable long-term strategy. However, identification of potential resistant traits and markers remains a major challenge. In this study, short-term disease resistance screening was conducted using 218 Norway spruce clones from 17 families. Disease resistance was evaluated based on the size of necrosis lesion length following infection with the pathogen. A subset of needles/branches from clones with small (partial resistant) or large (susceptible) lesions were used for terpene analysis and transcriptomic profiling. The results revealed that the content of monoterpene linalool and 1,8-cineole and their respective encoded genes were significantly more abundant and highly expressed in the partial resistant group. Furthermore, linalool and 1,8-cineole were demonstrated to have inhibitory effect on the growth of the pathogen H. parviporum , with morphological distortion of the hyphae. RNAseq analysis revealed that transcript of pathogen genes involved in the regulation of carbohydrate metabolism and stress responses were significantly decreased in presence of the terpenes. The results suggest the relevance of monoterpenes together with jasmonic acid precursor and some genes involved in phenylpropanoid biosynthesis, as constitutive tolerance factors for Norway spruce tolerance against necrotrophic pathogen. The high level of necrosis related cell death gene expression might be factors critical for host susceptibility and disease development.
研究领域:
植物学
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分子生物学
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林学
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DOI
PubMed
高影响因子
Journal of Essential Oil Bearing Plants
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2019
·
IF 0.688
Fengying Qiu,Haikuan Yang,Ting Zhang,Xindong Wang,Shifang Wen,Xiaohua Su
Cinnamomum porrectum (Roxb.) Kosterm is an important plant which produces natural essential oil. In this study, essential oil was hydro-distilled from leaves of five different samples of C. porrectum which were randomly selected in a C. porrectum forest in Guangdong Province of China, and identified by Gas Chromatography Mass Spectrometry (GC/MS). The results revealed that the average yield of essential oil was 1.12 % (v/w). A total of 65 compounds were identified from five samples, and 31 of which were reported for the first time in leaf essential oil of C. porrectum. High contents of monoterpenes and sesquiterpenes were found in the leaves of C. porrectum. The main components of essential oil were linalool (79.4 %), elemol (38.1 %), eucalyptol (35.6 %), β-caryophyllene (34.6 %), camphor (33.2 %), α-eudesmol (26.5 %), citral (23.5 %) and L-α- Terpineol (22.0 %). Different types of high-value compounds were found to be present in the five selected samples of C. porrectum oil, and the difference of essential oil components in individual leaves was remarkable. The various breeding techniques can be utilization based on different chemical types of leaf essential oil to exploit the plant to its full potential.
研究领域:
植物学
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化学生态学
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药用植物研究
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DOI
高影响因子
Journal of Environmental Sciences
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2024
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IF 5.9
Yingqi Zhao,Zhaoyan Zhang,Ya Zhao,Chong Wang,Hua Xie,Jiayue Yang,Weiqing Zhang,Guorong Wu,Gang Li,Ling Jiang,Xueming Yang
It is highly challenging to precisely compare the impacts of anthropogenic pollutants on the photooxidation of isomeric volatile organic compounds with respect to molecular compositions and particle number/mass concentrations of secondary organic aerosols (SOAs). In this study, we conducted a series of well-defined indoor chamber experiments to compare the effects of NO x (NO and NO 2 ) on the photooxidation of isomeric monoterpenes of β -pinene and limonene. For the photooxidation of β -pinene with NO x , the increase of the initial concentrations of NO ([NO] 0 ) shows a monotonous suppression of the particle mass concentration, whereas the increase of [NO 2 ] 0 shows a monotonous enhancement of the particle mass concentration. For the photooxidation of limonene with NO x , the increase of [NO] 0 exhibits a monotonous suppression of the particle mass concentration, whereas the increase of [NO 2 ] 0 shows a parabolic trend of the particle mass concentration. Utilizing a newly developed vacuum ultraviolet free electron laser (VUV-FEL), the online threshold photoionization mass spectrometry reveals a series of novel compounds at molecular weight (MW) = 232 and 306 for the β -pinene + NO x system and MW = 187, 261, 280, and 306 for the limonene + NO x system. The molecular structures and formation pathways of these species were inferred, which led to the prediction of the diversity and difference of SOA products (i.e., ester and peroxide accretion products) formed from different monoterpene precursors. To improve the predictions of future air quality, it is recommended that climate models should incorporate the NO x -driven diurnal photooxidation of monoterpenes for SOA formation mechanisms.
研究领域:
大气化学
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环境科学
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DOI
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
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2019
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IF 3.571
Zhibo Hu,Yiwen Tao,Xingyu Tao,Qinhua Su,Jiachun Cai,Can Qin,Weijia Ding,Chunyuan Li
A new monosesquiterpene diacetylgliocladic acid (1), a new dimeric sesquiterpene divirensol H (9), and two exceptionally novel trimeric sesquiterpene trivirensols A and B (11 and 12), together with another eight known congeners, were purified from an endophytic fungus Trichoderma virens FY06, derived from Litchi chinensis Sonn. whose fruit is a delicious and popular food. All of them were identified by comprehensive spectroscopic analysis, combined with biosynthetic considerations. Trivirensols A and B are unprecedented trimers of which three subunits are connected by two ester bonds of the sesquiterpene class. Relative to the positive control triadimefon, all the tested metabolites showed strong inhibitory activities against at least one phytopathogenic fungus among Penicillium italicum, Fusarium oxysporum, Fusarium graminearum, Colletotrichum musae, and Colletotrictum gloeosporioides. Notably, as metabolites of the endophytic fungus from L. chinensis, they all presented strong antifungal activities against C. gloeosporioides which causes anthracnose in L. chinensis.
研究领域:
植物化学
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微生物学
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药物化学
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产品关联
DOI
PubMed
高影响因子
LWT-FOOD SCIENCE AND TECHNOLOGY
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2025
·
IF 6.6
Yihong Zhou,Yang Xu,Peng Wang,Jing Zhang,Shangxing Chen,Dayong Peng,Zongde Wang,Yuling Yang,Hai Luo,Ji Zhang
Citral is one of the main components of everyday chemical fragrances and Its fragrance cannot be retained for long due to its active chemical properties. Currently, potentially toxic or expensive industrial surfactants are commonly used to emulsify flavors or essential oils, and most of the dispersed systems formed are thermodynamically unstable. In this study, modified corn protein was used as a solid particles and xanthan gum as a co-emulsifier to form an O/W type Pickering emulsion. Corn protein was modified with natural plant polyphenol–tannin to obtain solid particles with optimal amphiphilicity and antioxidant properties, and the particle size was approximately 170 nm. The Pickering emulsion was dispersed using a high-speed homogenizer. The percentage of encapsulated citral in the system was 20%. The particle size, polydispersity index, and citral encapsulation rate were 32.48 μm, 0.323, and 91.26%, respectively. The Pickering emulsion significantly improved the stability of the encapsulated citral, and the retention of citral in harsh environments (both high temperature and aerobic) was significantly increased. After one month of storage, the citral retention in the Pickering emulsion was 86.95% under aerobic conditions.
研究领域:
食品科学
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材料科学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）