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Li Z, Xie H, Geng G, Yin C, Wu X, Ma J, Su R, Wang Z, Qiao F. Diversity and Correlation Analysis of Endophytes and Top Metabolites in Phlomoides rotata Roots from High-Altitude Habitats. Microorganisms 2025; 13:503. [PMID: 40142396 PMCID: PMC11944690 DOI: 10.3390/microorganisms13030503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2025] [Revised: 02/20/2025] [Accepted: 02/20/2025] [Indexed: 03/28/2025] Open
Abstract
Phlomoides rotata, a traditional medicinal plant, always grows on the Tibetan Plateau at a high altitude of 3100-5200 m. The major active ingredients in P. rotata were used in medicines due to their diverse pharmacological effects, including hemostatic, anti-inflammatory, antitumor, immuno-modulatory, and antioxidant activities. This study screened 15 top endophytic genus through the analysis of OTUs and the top 30 metabolites with relatively high content in P. rotata roots from four different habitats (HN, GL, YS, and CD regions) in Qinghai Province. Twelve physicochemical indicators were measured and analyzed in the rhizosphere soils of P. rotata habitats. The results indicated that the top 30 metabolites compounds included 7 amino acids, 5 sugars and alcohols, 4 phenylpropanoids, 3 Organic acids, and 3 Alkaloids. Four endophytic bacteria (Acidibacter, Sphingomonas, Variovorax, and Sphingobium) and three endophytic fungi (Tetracladium, Cadophora, and Minimelanolocus) were dominant genera in P. rotata roots from four habitats. There were 109 positive significant correlations and 57 negative correlations between OTUs of endophytic bacteria and contents of top 30 metabolites, and 59 positive significant correlations and 58 negative correlations between OTUs of endophytic fungus and contents of top 30 metabolites. The OTUs of Acidibacter were significantly positively correlated with the content of 5 soil physicochemical indicators (total phosphorus, amylase, sucrase, total potassium, or soil organic carbon) and significantly negatively correlated with the content of acid protease. OTUs of Tetracladium or Cadophora showed a positive correlation with the content of total phosphorus and a negative correlation with that of alkaline phosphatase. This study provides a theoretical basis for the study of the correlation between endophytes and metabolites in P. rotata roots.
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Affiliation(s)
- Zuxia Li
- Key Laboratory of Tibetan Plateau Medicinal Plant and Animal Resources, School of Life Sciences, Qinghai Normal University, Xining 810008, China; (Z.L.); (C.Y.); (X.W.); (J.M.); (R.S.); (Z.W.)
| | - Huichun Xie
- Key Laboratory of Tibetan Plateau Medicinal Plant and Animal Resources, School of Life Sciences, Qinghai Normal University, Xining 810008, China; (Z.L.); (C.Y.); (X.W.); (J.M.); (R.S.); (Z.W.)
- Academy of Plateau Science and Sustainability, Qinghai Normal University, Xining 810008, China
- Qinghai South of Qilian Mountain Forest Ecosystem Observation and Research Station, Huzhu 810500, China;
| | - Guigong Geng
- Qinghai South of Qilian Mountain Forest Ecosystem Observation and Research Station, Huzhu 810500, China;
- Academy of Agricultural and Forestry Sciences, Qinghai University, Xining 810016, China
| | - Chongxin Yin
- Key Laboratory of Tibetan Plateau Medicinal Plant and Animal Resources, School of Life Sciences, Qinghai Normal University, Xining 810008, China; (Z.L.); (C.Y.); (X.W.); (J.M.); (R.S.); (Z.W.)
| | - Xiaozhuo Wu
- Key Laboratory of Tibetan Plateau Medicinal Plant and Animal Resources, School of Life Sciences, Qinghai Normal University, Xining 810008, China; (Z.L.); (C.Y.); (X.W.); (J.M.); (R.S.); (Z.W.)
| | - Jianxia Ma
- Key Laboratory of Tibetan Plateau Medicinal Plant and Animal Resources, School of Life Sciences, Qinghai Normal University, Xining 810008, China; (Z.L.); (C.Y.); (X.W.); (J.M.); (R.S.); (Z.W.)
| | - Rui Su
- Key Laboratory of Tibetan Plateau Medicinal Plant and Animal Resources, School of Life Sciences, Qinghai Normal University, Xining 810008, China; (Z.L.); (C.Y.); (X.W.); (J.M.); (R.S.); (Z.W.)
| | - Zirui Wang
- Key Laboratory of Tibetan Plateau Medicinal Plant and Animal Resources, School of Life Sciences, Qinghai Normal University, Xining 810008, China; (Z.L.); (C.Y.); (X.W.); (J.M.); (R.S.); (Z.W.)
| | - Feng Qiao
- Key Laboratory of Tibetan Plateau Medicinal Plant and Animal Resources, School of Life Sciences, Qinghai Normal University, Xining 810008, China; (Z.L.); (C.Y.); (X.W.); (J.M.); (R.S.); (Z.W.)
- Academy of Plateau Science and Sustainability, Qinghai Normal University, Xining 810008, China
- Qinghai South of Qilian Mountain Forest Ecosystem Observation and Research Station, Huzhu 810500, China;
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Meng P, Xin K, Lu Z, Chen J, Tang X, Meng G, He F, Liu L, Wang H, Wang C. Intercropping with Robinia pseudoacacia reduces soft rot incidence in konjac by modulating the root bacterial community. PEST MANAGEMENT SCIENCE 2025; 81:55-68. [PMID: 39263914 DOI: 10.1002/ps.8405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 07/22/2024] [Accepted: 08/25/2024] [Indexed: 09/13/2024]
Abstract
BACKGROUND Soft rot (Pectobacterium aroidearum and Dickeya) is a devastating soil-borne bacterial disease that threatens konjac production. Intercropping with false acacia has been shown to significantly reduce soft rot incidence in konjac by shifting the microbial community. However, how intercropping shapes the root bacterial community and affects soft rot incidence remains unclear. To address this, we investigated three konjac intercropping systems (false acacia, paulownia, and maize) to explore the relationships among intercropping, soft rot incidence, root bacterial community, soil enzyme activity, and soil properties. RESULTS Konjac intercropped with false acacia exhibited the lowest soft rot incidence and the lowest abundance of pathogenic taxa. Soft rot incidence was negatively correlated with total soil nitrogen and potassium but positively correlated with total and available soil phosphorus. The bacterial community structure and function in konjac roots differed among intercropping types, mainly driven by available soil phosphorus. Beneficial microorganisms such as Bradyrhizobium and Variovorax were enriched under a false acacia intercropping system and were negatively correlated with soil-available phosphorus. Additionally, the stable bacterial community in healthy konjac roots under false acacia may make konjac less susceptible to pathogen invasion. CONCLUSION The study showed that intercropping reduced the soft rot incidence by regulating the structure and stability of the konjac root bacterial community, and soil-available phosphorus was the main factor affecting the difference in the konjac root bacterial community, which provided a basis for the management of soil fertilization in konjac cultivation. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Panpan Meng
- College of Forestry, Northwest A&F University, Yangling, China
| | - Kexu Xin
- College of Forestry, Northwest A&F University, Yangling, China
| | - Zhoumin Lu
- College of Forestry, Northwest A&F University, Yangling, China
| | - Juan Chen
- Yachang Forest Farm, Guangxi Zhuang Autonomous Region, Baise, China
| | - Xiaan Tang
- College of Forestry, Northwest A&F University, Yangling, China
| | - Guihua Meng
- College of Forestry, Northwest A&F University, Yangling, China
| | - Fei He
- College of Modern Agriculture and Biotechnology, Ankang University, Ankang, China
| | | | - Haihua Wang
- North Florida Research and Education Center, University of Florida, Quincy, Florida, USA
| | - Chunyan Wang
- College of Forestry, Northwest A&F University, Yangling, China
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Zhang L, Xu W, Zhao Z, Long Y, Fan R. Biocontrol potential and growth-promoting effect of endophytic fungus Talaromyces muroii SD1-4 against potato leaf spot disease caused by Alternaria alternata. BMC Microbiol 2024; 24:255. [PMID: 38982358 PMCID: PMC11232169 DOI: 10.1186/s12866-024-03411-4] [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: 01/18/2024] [Accepted: 07/02/2024] [Indexed: 07/11/2024] Open
Abstract
BACKGROUND Alternaria alternata is the primary pathogen of potato leaf spot disease, resulting in significant potato yield losses globally. Endophytic microorganism-based biological control, especially using microorganisms from host plants, has emerged as a promising and eco-friendly approach for managing plant diseases. Therefore, this study aimed to isolate, identify and characterize the endophytic fungi from healthy potato leaves which had great antifungal activity to the potato leaf spot pathogen of A. alternata in vitro and in vivo. RESULTS An endophytic fungal strain SD1-4 was isolated from healthy potato leaves and was identified as Talaromyces muroii through morphological and sequencing analysis. The strain SD1-4 exhibited potent antifungal activity against the potato leaf spot pathogen A. alternata Lill, with a hyphal inhibition rate of 69.19%. Microscopic and scanning electron microscope observations revealed that the strain SD1-4 grew parallel to, coiled around, shrunk and deformed the mycelia of A. alternata Lill. Additionally, the enzyme activities of chitinase and β-1, 3-glucanase significantly increased in the hyphae of A. alternata Lill when co-cultured with the strain SD1-4, indicating severe impairment of the cell wall function of A. alternata Lill. Furthermore, the mycelial growth and conidial germination of A. alternata Lill were significantly suppressed by the aseptic filtrate of the strain SD1-4, with inhibition rates of 79.00% and 80.67%, respectively. Decrease of leaf spot disease index from 78.36 to 37.03 was also observed in potato plants treated with the strain SD1-4, along with the significantly increased plant growth characters including plant height, root length, fresh weight, dry weight, chlorophyll content and photosynthetic rate of potato seedlings. CONCLUSION The endophyte fungus of T. muroii SD1-4 isolated from healthy potato leaves in the present study showed high biocontrol potential against potato leaf spot disease caused by A. alternata via direct parasitism or antifungal metabolites, and had positive roles in promoting potato plant growth.
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Affiliation(s)
- Lihua Zhang
- College of Agriculture, Guizhou University, Guiyang, 550025, China
| | - Wei Xu
- College of Agriculture, Guizhou University, Guiyang, 550025, China
| | - Zhibo Zhao
- College of Agriculture, Guizhou University, Guiyang, 550025, China
| | - Youhua Long
- College of Agriculture, Guizhou University, Guiyang, 550025, China
| | - Rong Fan
- College of Agriculture, Guizhou University, Guiyang, 550025, China.
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Yang H, Zhang X, Qiu X, Chen J, Wang Y, Zhang G, Jia S, Shen X, Ye W, Yan Z. Fusarium Wilt Invasion Results in a Strong Impact on Strawberry Microbiomes. PLANTS (BASEL, SWITZERLAND) 2023; 12:4153. [PMID: 38140478 PMCID: PMC10747085 DOI: 10.3390/plants12244153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 12/11/2023] [Accepted: 12/12/2023] [Indexed: 12/24/2023]
Abstract
Plant-endophytic microbes affect plant growth, development, nutrition, and resistance to pathogens. However, how endophytic microbial communities change in different strawberry plant compartments after Fusarium pathogen infection has remained elusive. In this study, 16S and internal transcribed spacer rRNA amplicon sequencing were used to systematically investigate changes in the bacterial and fungal diversity and composition in the endophytic compartments (roots, stems, and leaves) of healthy strawberries and strawberries with Fusarium wilt, respectively. The analysis of the diversity, structure, and composition of the bacterial and fungal communities revealed a strong effect of pathogen invasion on the endophytic communities. The bacterial and fungal community diversity was lower in the Fusarium-infected endophytic compartments than in the healthy samples. The relative abundance of certain bacterial and fungal genera also changed after Fusarium wilt infection. The relative abundance of the beneficial bacterial genera Bacillus, Bradyrhizobium, Methylophilus, Sphingobium, Lactobacillus, and Streptomyces, as well as fungal genera Acremonium, Penicillium, Talaromyces, and Trichoderma, were higher in the healthy samples than in the Fusarium wilt samples. The relative abundance of Fusarium in the infected samples was significantly higher than that in the healthy samples, consistent with the field observations and culture isolation results for strawberry wilt. Our findings provide a theoretical basis for the isolation, identification, and control of strawberry wilt disease.
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Affiliation(s)
- Hongjun Yang
- College of Agronomy and Horticulture, Jiangsu Vocational College of Agriculture and Forestry, Zhenjiang 212400, China; (H.Y.); (X.Q.); (Y.W.); (G.Z.); (S.J.); (X.S.)
- Jiangsu Engineering and Technology Center for Modern Horticulture, Zhenjiang 212400, China
| | - Xu Zhang
- College of Agronomy and Horticulture, Jiangsu Vocational College of Agriculture and Forestry, Zhenjiang 212400, China; (H.Y.); (X.Q.); (Y.W.); (G.Z.); (S.J.); (X.S.)
- Jiangsu Engineering and Technology Center for Modern Horticulture, Zhenjiang 212400, China
| | - Xiaohong Qiu
- College of Agronomy and Horticulture, Jiangsu Vocational College of Agriculture and Forestry, Zhenjiang 212400, China; (H.Y.); (X.Q.); (Y.W.); (G.Z.); (S.J.); (X.S.)
| | - Jiajia Chen
- College of Landscape Architecture, Jiangsu Vocational College of Agriculture and Forestry, Zhenjiang 212400, China;
| | - Yuanhua Wang
- College of Agronomy and Horticulture, Jiangsu Vocational College of Agriculture and Forestry, Zhenjiang 212400, China; (H.Y.); (X.Q.); (Y.W.); (G.Z.); (S.J.); (X.S.)
- Jiangsu Engineering and Technology Center for Modern Horticulture, Zhenjiang 212400, China
| | - Geng Zhang
- College of Agronomy and Horticulture, Jiangsu Vocational College of Agriculture and Forestry, Zhenjiang 212400, China; (H.Y.); (X.Q.); (Y.W.); (G.Z.); (S.J.); (X.S.)
- Jiangsu Engineering and Technology Center for Modern Horticulture, Zhenjiang 212400, China
| | - Sizhen Jia
- College of Agronomy and Horticulture, Jiangsu Vocational College of Agriculture and Forestry, Zhenjiang 212400, China; (H.Y.); (X.Q.); (Y.W.); (G.Z.); (S.J.); (X.S.)
| | - Xiangqi Shen
- College of Agronomy and Horticulture, Jiangsu Vocational College of Agriculture and Forestry, Zhenjiang 212400, China; (H.Y.); (X.Q.); (Y.W.); (G.Z.); (S.J.); (X.S.)
| | - Wenwu Ye
- Key Laboratory of Plant Immunity, Department of Plant Pathology, Nanjing Agricultural University, Nanjing 210095, China;
| | - Zhiming Yan
- College of Agronomy and Horticulture, Jiangsu Vocational College of Agriculture and Forestry, Zhenjiang 212400, China; (H.Y.); (X.Q.); (Y.W.); (G.Z.); (S.J.); (X.S.)
- Jiangsu Engineering and Technology Center for Modern Horticulture, Zhenjiang 212400, China
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