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Wu H, Cui H, Tian Y, Wu J, Bai Z, Zhang X. Exogenous ethephon treatment on the biosynthesis and accumulation of astragaloside IV in Astragalus membranaceus Bge. Var. Mongholicus (Bge.) Hsiao. BOTANICAL STUDIES 2024; 65:16. [PMID: 38967679 PMCID: PMC11226570 DOI: 10.1186/s40529-024-00426-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2023] [Accepted: 06/18/2024] [Indexed: 07/06/2024]
Abstract
BACKGROUND Astragaloside IV is a main medicinal active ingredient in Astragalus membranaceus Bge. var. mongholicus (Bge.) Hsiao, which is also the key biomarker of A. membranaceus quality. Ethylene has been well-documented to involve in secondary metabolites biosynthesis in plants. Nevertheless, how ethylene regulates astragaloside IV biosynthesis in A. membranaceus is still unclear. Therefore, in the present study different dosages and time-dependent exogenous application of ethephon (Eth) were employed to analyze astragaloside IV accumulation and its biosynthesis genes expression level in hydroponically A. membranaceus. RESULTS Exogenous 200 µmol·L- 1Eth supply is most significantly increased astragaloside IV contents in A. membranaceus when compared with non-Eth supply. After 12 h 200 µmol·L- 1 Eth treatment, the astragaloside IV contents reaching the highest content at 3 d Eth treatment(P ≤ 0.05). Moreover, After Eth treatment, all detected key genes involved in astragaloside IV synthesis were significant decrease at 3rd day(P ≤ 0.05). However, SE displayed a significant increase at the 3rd day under Eth treatment(P ≤ 0.05). Under Eth treatment, the expression level of FPS, HMGR, IDI, SS, and CYP93E3 exhibited significant negative correlations with astragaloside IV content, while expression level of SE displayed a significant positive correlation. CONCLUSIONS These findings suggest that exogenous Eth treatment can influence the synthesis of astragaloside IV by regulating the expression of FPS, HMGR, IDI, SS, CYP93E3 and SE. This study provides a theoretical basis for utilizing molecular strategies to enhance the quality of A. membranaceus.
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Affiliation(s)
- Haonan Wu
- College of Life Sciences, Yan'an University, Yan'an, 716000, China
| | - Hang Cui
- College of Life Sciences, Yan'an University, Yan'an, 716000, China
| | - Yu Tian
- College of Life Sciences, Yan'an University, Yan'an, 716000, China
| | - Jiawen Wu
- College of Life Sciences, Yan'an University, Yan'an, 716000, China
| | - Zhenqing Bai
- College of Life Sciences, Yan'an University, Yan'an, 716000, China.
- Inner Mongolia Academy of Science and Technology, Hohhot, 010018, China.
| | - Xiujuan Zhang
- Inner Mongolia Academy of Science and Technology, Hohhot, 010018, China.
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Wang Y, Yuan C, Zhao J, Liu Y, Tian C, Qian J, Nan T, Kang L, Liu Y, Zhan Z, Huang L. An evaluation of Astragali Radix with different growth patterns and years, based on a new multidimensional comparison method. FRONTIERS IN PLANT SCIENCE 2024; 15:1368135. [PMID: 38486854 PMCID: PMC10937430 DOI: 10.3389/fpls.2024.1368135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Accepted: 02/08/2024] [Indexed: 03/17/2024]
Abstract
Introduction With the depletion of wild Astragali Radix (WA) resources, imitated-wild Astragali Radix (IWA) and cultivated Astragali Radix (CA) have become the main products of Astragali Radix. However, the quality differences of three growth patterns (WA, IWA, CA) and different growth years of Astragali Radix have not been fully characterized, leading to a lack of necessary scientific evidence for their use as substitutes for WA. Methods We innovatively proposed a multidimensional evaluation method that encompassed traits, microstructure, cell wall components, saccharides, and pharmacodynamic compounds, to comprehensively explain the quality variances among different growth patterns and years of Astragali Radix. Results and discussion Our study showed that the quality of IWA and WA was comparatively similar, including evaluation indicators such as apparent color, sectional structure and odor, thickness of phellem, diameter and number of vessels, morphology of phloem and xylem, and the levels and ratios of cellulose, hemicellulose, lignin, sucrose, starch, water-soluble polysaccharides, total-saponins. However, the content of sucrose, starch and sorbose in CA was significantly higher than WA, and the diameter and number of vessels, total-flavonoids content were lower than WA, indicating significant quality differences between CA and WA. Hence, we suggest that IWA should be used as a substitute for WA instead of CA. As for the planting years of IWA, our results indicated that IWA aged 1-32 years could be divided into three stages according to their quality change: rapid growth period (1-5 years), stable growth period (6-20 years), and elderly growth period (25-32 years). Among these, 6-20 years old IWA exhibited consistent multidimensional comparative results, showcasing elevated levels of key active components such as water-soluble polysaccharides, flavonoids, and saponins. Considering both the quality and cultivation expenses of IWA, we recommend a cultivation duration of 6-8 years for growers. In conclusion, we established a novel multidimensional evaluation method to systematically characterize the quality of Astragali Radix, and provided a new scientific perspective for the artificial cultivation and quality assurance of Astragali Radix.
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Affiliation(s)
- Yapeng Wang
- State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medica Sciences, Beijing, China
| | - Changsheng Yuan
- State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medica Sciences, Beijing, China
| | - Jiachen Zhao
- State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medica Sciences, Beijing, China
| | - Yunxiang Liu
- State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medica Sciences, Beijing, China
| | - Chunfang Tian
- State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medica Sciences, Beijing, China
| | - Jinxiu Qian
- State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medica Sciences, Beijing, China
| | - Tiegui Nan
- State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medica Sciences, Beijing, China
| | - Liping Kang
- State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medica Sciences, Beijing, China
| | - Yanmeng Liu
- State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medica Sciences, Beijing, China
| | - Zhilai Zhan
- State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medica Sciences, Beijing, China
| | - Luqi Huang
- State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medica Sciences, Beijing, China
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Hao Y, Fu J, Zhang J, Du N, Ta H, Zhu TT, Wang H, Lou HX, Cheng AX. Identification and Functional Characterization of UDP-Glycosyltransferases Involved in Isoflavone Biosynthesis in Astragalus membranaceus. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:12775-12784. [PMID: 37604680 DOI: 10.1021/acs.jafc.3c03563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/23/2023]
Abstract
Isoflavones are rich natural compounds present in legumes and are essential for plant growth and development. Moreover, they are beneficial for animals and humans. Isoflavones are primarily found as glycoconjugates, including calycosin-7-O-β-d-glucoside (CG) in Astragalus membranaceus, a legume. However, the glycosylation mechanism of isoflavones in A. membranaceus remains unclear. In the present study, three uridine diphosphate (UDP)-glycosyltransferases (UGTs) that may be involved in the biosynthesis of isoflavone were identified in the transcriptome of A. membranaceus. Enzymatic analysis revealed that AmUGT88E29 and AmUGT88E30 had high catalytic activity toward isoflavones in vitro. In addition, AmUGT88E29 and AmUGT88E30 could accept various flavones, flavanones, flavonols, dihydroflavonols, and dihydrochalcones as substrates. AmUGT71G10 was only active against phloretin and dihydroresveratrol. Overexpression of AmUGT88E29 significantly increased the contents of CG, an isoflavone glucoside, in the hairy roots of A. membranaceus. This study provided candidate AmUGT genes for the potential metabolic engineering of flavonoid compounds in plants and a valuable resource for studying the calycosin glycosides biosynthesis pathway.
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Affiliation(s)
- Yue Hao
- Key Laboratory of Chemical Biology of Natural Products, Ministry of Education, School of Pharmaceutical Sciences, Shandong University, Jinan 250012, People's Republic of China
| | - Jie Fu
- Key Laboratory of Chemical Biology of Natural Products, Ministry of Education, School of Pharmaceutical Sciences, Shandong University, Jinan 250012, People's Republic of China
| | - Jiaozhen Zhang
- Key Laboratory of Chemical Biology of Natural Products, Ministry of Education, School of Pharmaceutical Sciences, Shandong University, Jinan 250012, People's Republic of China
| | - Nihong Du
- Key Laboratory of Chemical Biology of Natural Products, Ministry of Education, School of Pharmaceutical Sciences, Shandong University, Jinan 250012, People's Republic of China
| | - He Ta
- Key Laboratory of Chemical Biology of Natural Products, Ministry of Education, School of Pharmaceutical Sciences, Shandong University, Jinan 250012, People's Republic of China
| | - Ting-Ting Zhu
- Key Laboratory of Chemical Biology of Natural Products, Ministry of Education, School of Pharmaceutical Sciences, Shandong University, Jinan 250012, People's Republic of China
| | - Hailong Wang
- State Key Laboratory of Microbial Technology, Institute of Microbial Technology, Helmholtz International Lab for Anti-Infectives, Helmholtz Institute of Biotechnology, Shandong University, Qingdao 266237, People's Republic of China
| | - Hong-Xiang Lou
- Key Laboratory of Chemical Biology of Natural Products, Ministry of Education, School of Pharmaceutical Sciences, Shandong University, Jinan 250012, People's Republic of China
| | - Ai-Xia Cheng
- Key Laboratory of Chemical Biology of Natural Products, Ministry of Education, School of Pharmaceutical Sciences, Shandong University, Jinan 250012, People's Republic of China
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Liu Q, Li J, Gu M, Kong W, Lin Z, Mao J, Zhang M, Jiang L, Liu C, Wang Y, Liu J. High-Throughput Phytochemical Unscrambling of Flowers Originating from Astragalus membranaceus (Fisch.) Bge. var. mongholicus (Bge.) P. K. Hsiao and Astragalus membranaceus (Fisch.) Bug. by Applying the Intagretive Plant Metabolomics Method Using UHPLC-Q-TOF-MS/MS. Molecules 2023; 28:6115. [PMID: 37630367 PMCID: PMC10458299 DOI: 10.3390/molecules28166115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Revised: 08/10/2023] [Accepted: 08/12/2023] [Indexed: 08/27/2023] Open
Abstract
Astragalus membranaceus (Fisch.) Bge. var. mongholicus (Bge.) P. K. Hsiao (MO) and Astragalus membranaceus (Fisch.) Bug. (ME) are two primary sources of the Astragalus herb, also known as "Huangqi" in China, which is widely applied to treat hypertension, glomerulonephritis, ischemic heart disease, and diabetes mellitus. As two different sources of the Astragalus herb, the chemical profiles of MO and ME may be different. Previous studies showed abundant differences in chemical composition between MO and ME. Therefore, the by-products of MO and ME, such as Astragalus membranaceus (Fisch.) Bge. var. mongholicus (Bge.) P. K. Hsiao flower (MOF) and Astragalus membranaceus (Fisch.) Bug. flower (MEF), may have different phytochemical profiles. In this paper, a metabolomics method combined with ultra-high-performance liquid chromatography and electrospray ionization/quadrupole time-of-flight mass spectrometry (UHPLC-Q-TOF-MS/MS) was employed to analyze the components of MOF and MEF. Consequently, the results of principal component analysis (PCA) showed that MOF and MEF could be separated clearly. In total, 31 chemical markers differentiating MOF and MEF were successfully identified, including 22 flavonoids, 8 isoflavones and 1 benzopyran. Among them, the contents of 18 components, including Calycosin, Cyanidin-3-O-glucoside, Quercetin, Rutin, Kaempferol, Formononetin, Isomucronulatol and Prim-O-glucosylcimifugin in MEF, were significantly higher than in MOF. In turn, the contents of another 13 components, covering Biochanin A, Tectoridin, Isomucronulatol-7-O-glucoside, Liquiritin, Rhamnetin, etc., were lower in the MEF group than that in the MOF group. It is worth noting that flavonoids, especially flavonoid glycosides, were the primary active chemical ingredients in MOF and MEF. The 18 ingredients in MEF with a higher level carried out diverse activities, like anti-oxidant, anti-inflammatory, anti-bacterial and anti-tumor activities, which led us to speculate that MEF may have greater pharmacological effects and potential development prospects than MOF. The present results displayed that the contents of ingredients in the two different species of plants were radically different, and there was significant uniqueness to the components of MOF and MEF. Our study not only provides helpful chemical information for further quality assessment and active mechanism research of MOF and MEF but also offers scientific support for the resource utilization of MOF and MEF.
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Affiliation(s)
- Qi Liu
- The Research Institute of Medicine and Pharmacy, Qiqihar Medical University, Bukui Street 333, Qiqihar 161006, China; (Q.L.); (J.L.); (M.G.); (W.K.); (Z.L.); (J.M.); (M.Z.); (L.J.); (C.L.)
| | - Jinghui Li
- The Research Institute of Medicine and Pharmacy, Qiqihar Medical University, Bukui Street 333, Qiqihar 161006, China; (Q.L.); (J.L.); (M.G.); (W.K.); (Z.L.); (J.M.); (M.Z.); (L.J.); (C.L.)
| | - Meiling Gu
- The Research Institute of Medicine and Pharmacy, Qiqihar Medical University, Bukui Street 333, Qiqihar 161006, China; (Q.L.); (J.L.); (M.G.); (W.K.); (Z.L.); (J.M.); (M.Z.); (L.J.); (C.L.)
| | - Wanying Kong
- The Research Institute of Medicine and Pharmacy, Qiqihar Medical University, Bukui Street 333, Qiqihar 161006, China; (Q.L.); (J.L.); (M.G.); (W.K.); (Z.L.); (J.M.); (M.Z.); (L.J.); (C.L.)
| | - Zhao Lin
- The Research Institute of Medicine and Pharmacy, Qiqihar Medical University, Bukui Street 333, Qiqihar 161006, China; (Q.L.); (J.L.); (M.G.); (W.K.); (Z.L.); (J.M.); (M.Z.); (L.J.); (C.L.)
| | - Jialin Mao
- The Research Institute of Medicine and Pharmacy, Qiqihar Medical University, Bukui Street 333, Qiqihar 161006, China; (Q.L.); (J.L.); (M.G.); (W.K.); (Z.L.); (J.M.); (M.Z.); (L.J.); (C.L.)
| | - Meng Zhang
- The Research Institute of Medicine and Pharmacy, Qiqihar Medical University, Bukui Street 333, Qiqihar 161006, China; (Q.L.); (J.L.); (M.G.); (W.K.); (Z.L.); (J.M.); (M.Z.); (L.J.); (C.L.)
| | - Liyan Jiang
- The Research Institute of Medicine and Pharmacy, Qiqihar Medical University, Bukui Street 333, Qiqihar 161006, China; (Q.L.); (J.L.); (M.G.); (W.K.); (Z.L.); (J.M.); (M.Z.); (L.J.); (C.L.)
| | - Can Liu
- The Research Institute of Medicine and Pharmacy, Qiqihar Medical University, Bukui Street 333, Qiqihar 161006, China; (Q.L.); (J.L.); (M.G.); (W.K.); (Z.L.); (J.M.); (M.Z.); (L.J.); (C.L.)
| | - Yumei Wang
- The Research Institute of Medicine and Pharmacy, Qiqihar Medical University, Bukui Street 333, Qiqihar 161006, China; (Q.L.); (J.L.); (M.G.); (W.K.); (Z.L.); (J.M.); (M.Z.); (L.J.); (C.L.)
| | - Jicheng Liu
- The Research Institute of Medicine and Pharmacy, Qiqihar Medical University, Bukui Street 333, Qiqihar 161006, China; (Q.L.); (J.L.); (M.G.); (W.K.); (Z.L.); (J.M.); (M.Z.); (L.J.); (C.L.)
- The Research Institute of Astragalus Industry, Qiqihar Academy of Medical Sciences, Qiqihar Medical University, Bukui Street 333, Qiqihar 161006, China
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Dong M, Li J, Yang D, Li M, Wei J. Biosynthesis and Pharmacological Activities of Flavonoids, Triterpene Saponins and Polysaccharides Derived from Astragalus membranaceus. Molecules 2023; 28:5018. [PMID: 37446680 PMCID: PMC10343288 DOI: 10.3390/molecules28135018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 06/19/2023] [Accepted: 06/25/2023] [Indexed: 07/15/2023] Open
Abstract
Astragalus membranaceus (A. membranaceus), a well-known traditional herbal medicine, has been widely used in ailments for more than 2000 years. The main bioactive compounds including flavonoids, triterpene saponins and polysaccharides obtained from A. membranaceus have shown a wide range of biological activities and pharmacological effects. These bioactive compounds have a significant role in protecting the liver, immunomodulation, anticancer, antidiabetic, antiviral, antiinflammatory, antioxidant and anti-cardiovascular activities. The flavonoids are initially synthesized through the phenylpropanoid pathway, followed by catalysis with corresponding enzymes, while the triterpenoid saponins, especially astragalosides, are synthesized through the universal upstream pathways of mevalonate (MVA) and methylerythritol phosphate (MEP), and the downstream pathway of triterpenoid skeleton formation and modification. Moreover, the Astragalus polysaccharide (APS) possesses multiple pharmacological activities. In this review, we comprehensively discussed the biosynthesis pathway of flavonoids and triterpenoid saponins, and the structural features of polysaccharides in A. membranaceus. We further systematically summarized the pharmacological effects of bioactive ingredients in A. membranaceus, which laid the foundation for the development of clinical candidate agents. Finally, we proposed potential strategies of heterologous biosynthesis to improve the industrialized production and sustainable supply of natural products with pharmacological activities from A. membranaceus, thereby providing an important guide for their future development trend.
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Affiliation(s)
- Miaoyin Dong
- College of Life Science and Technology, Gansu Agricultural University, Lanzhou 730070, China; (M.D.); (D.Y.)
- State Key Laboratory of Arid Land Crop Science, Gansu Agricultural University, Lanzhou 730070, China
| | - Jinjuan Li
- Institute of Agricultural Quality Standards and Testing Technology, Gansu Academy of Agricultural Sciences, Lanzhou 730070, China;
| | - Delong Yang
- College of Life Science and Technology, Gansu Agricultural University, Lanzhou 730070, China; (M.D.); (D.Y.)
- State Key Laboratory of Arid Land Crop Science, Gansu Agricultural University, Lanzhou 730070, China
| | - Mengfei Li
- State Key Laboratory of Arid Land Crop Science, Gansu Agricultural University, Lanzhou 730070, China
- Agronomy College, Gansu Agricultural University, Lanzhou 730070, China
| | - Jianhe Wei
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China
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Complementary Effects of Dark Septate Endophytes and Trichoderma Strains on Growth and Active Ingredient Accumulation of Astragalus mongholicus under Drought Stress. J Fungi (Basel) 2022; 8:jof8090920. [PMID: 36135646 PMCID: PMC9506129 DOI: 10.3390/jof8090920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 08/21/2022] [Accepted: 08/27/2022] [Indexed: 11/23/2022] Open
Abstract
Drought is a major abiotic stress factor affecting plant growth and production, while utilizing beneficial endophytic fungi is one of the most promising strategies for enhancing plant growth and drought tolerance. In the current study, a pot experiment was conducted to investigate the beneficial effects of dark septate endophyte (DSE) (Macrophomina pseudophaseolina, Paraphoma radicina) and Trichoderma (Trichoderma afroharzianum, Trichoderma longibrachiatum) inoculum on Astragalus mongholicus grown in sterile soil under drought stress, alone, or in combination. The addition of Trichoderma enhanced the DSE colonization in roots regardless of the water condition. Under well-watered conditions, M. pseudophaseolina inoculation significantly enhanced the biomass and root length of A. mongholicus. The two DSE and Trichoderma inoculum significantly improved calycosin-7-O-β-D-glucoside content. However, M. pseudophaseolina + T. afroharzianum inoculation better promoted root growth, whereas co-inoculation had higher active ingredient contents compared with single inoculation, except for P. radicina + T. afroharzianum. Under drought stress, DSE and Trichoderma inoculum significantly improved root biomass, root length, calycosin-7-O-β-D-glucoside content, and activities of nitrate reductase and soil urease. P. radicina + T. afroharzianum and P. radicina + T. longibrachiatum better increased root length, and all combinations of DSE and Trichoderma had a greater impact on the increase in formononetin content compared with the single treatments. Additionally, Trichoderma relies on antioxidant enzymes, growth hormones, and the redox system (ascorbic acid−glutathione) to resist drought, while DSE strains have an additional osmotic regulation system in addition to the drought resistance function possessed by Trichoderma, and the effect of co-inoculation (especially M. pseudophaseolina + T. longibrachiatum and P. radicina + T. afroharzianum) on plant physiological parameters was greater than that of single inoculation. This study provides a new research direction for the effects of DSE and Trichoderma on medicinal plant cultivated in dryland.
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