Article
Agriculture, Multidisciplinary
Zichang Zhao, Yingying Wei, Xiurong Zou, Shu Jiang, Yi Chen, Jianfen Ye, Feng Xu, Hongfei Wang, Xingfeng Shao
Summary: This study found that tryptophol, a quorum-sensing molecule, can enhance the biocontrol efficacy of marine yeast Scheffersomyces spartinae against Botrytis cinerea. Tryptophol promotes population density, biofilm formation, and cell aggregation of S. spartinae, which improves its biocontrol efficacy. Transcriptome analysis reveals that tryptophol upregulates genes associated with cell adhesion and biofilm formation.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2023)
Article
Microbiology
Yarui Wei, Baozhu Dong, Xiaogang Wu, Mingmin Zhao, Dong Wang, Na Li, Qian Zhang, Liqun Zhang, Hongyou Zhou
Summary: This study investigated the regulatory role of the rpoZ gene in the synthesis of the antibiotic 2,4-DAPG and the regulation of the QS system in Pseudomonas fluorescens 2P24. The results showed that rpoZ positively regulated the expression of phlA, PcoI, and rsmA genes at the transcriptional level, influencing the production of 2,4-DAPG and AHL molecules. Additionally, rpoZ had an impact on swimming and biofilm formation. Rating: 8/10
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Microbiology
Leila Ebrahimi, Sepideh Hatami Rad, Hassan Reza Etebarian
Summary: This study isolated endophytic fungi from wild and endemic apple cultivars and characterized their antifungal effect against Venturia inaequalis. The results showed that endophytic fungi play an important role in balancing ecosystems, increasing plant growth, and protecting plants from stress.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Said E. Desouky, Mohammed Abu-Elghait, Eman A. Fayed, Samy Selim, Basit Yousuf, Yasuhiro Igarashi, Basel A. Abdel-Wahab, Amnah Mohammed Alsuhaibani, Kenji Sonomoto, Jiro Nakayama
Summary: This study identified a set of actinomycetales secondary metabolites as novel anti-virulence compounds targeting the quorum sensing systems of Gram-positive bacteria. Four compounds potentially inhibit the agr quorum sensing system in Staphylococcus aureus, while six compounds selectively block the fsr quorum sensing system in Enterococcus faecalis.
Article
Biotechnology & Applied Microbiology
Aparna Anil Singh, Anil Kumar Singh, Anuradha Nerurkar
Summary: Genus Pectobacterium is a major cause of soft rot diseases in fruits and vegetables globally, and there is a need for alternative ecofriendly and economical strategies. Bacillus sp. OA10 extract can effectively inhibit the pathogenicity of PccBR1, potentially by disrupting the QS pathways.
WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY
(2021)
Article
Plant Sciences
Ayako Kusakabe, Istvan Molnar, S. Patricia Stock
Summary: This study found that a single root application of a mixture of trans-cinnamic acid (t-CA) and (4E)-5-phenylpent-4-enoic acid (PPA) significantly reduced the penetration of Meloidogyne incognita infective juveniles (J2s) into cowpea roots without impairing plant growth or chlorophyll content.
Review
Microbiology
Liang Wu, Yubin Luo
Summary: The field of quorum sensing (QS) system is rapidly expanding our understanding of bacteria communication and social activities. Recent studies have shown that QS-related autoinducers play important roles in maintaining homeostasis in the gut microbiome and also in interactions between pathogens and their hosts under pathological conditions. This knowledge is crucial for developing novel antimicrobial therapeutic strategies.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Ecology
Morten Lindqvist Hansen, Mario Wibowo, Scott Alexander Jarmusch, Thomas Ostenfeld Larsen, Lars Jelsbak
Summary: Soil and rhizosphere microbiomes play important roles in suppressing plant pathogens through the production of antagonistic secondary metabolites. This study investigates how interactions within the Pseudomonas genus affect their production of antimicrobial metabolites. The researchers found that P. capeferrum species can modulate secondary metabolite production in P. protegens through two distinct mechanisms. They also discovered that the interaction between the two species leads to changes in specific metabolite production. These findings have implications for improving the efficacy of biocontrol strains and consortia.
Article
Biotechnology & Applied Microbiology
Aoi Ogawa, Christophe Gole, Maria Bermudez, Odrine Habarugira, Gabrielle Joslin, Taylor McCain, Autumn Mineo, Jennifer Wise, Julie Xiong, Katherine Yan, Jan A. C. Vriezen
Summary: Since Ernest Duchesne first observed the antagonism by microorganisms, many scientists have successfully identified and applied bacteriogenic bioactive compounds from soils to treat infections. Unfortunately, overuse of antibiotics and the emergence of antibiotic resistance have hindered the discovery of new antibiotics. A deeper understanding of the biology of toxins and the cues leading to their production may increase the success rate of discovering novel antibiotics. Our research shows that bacterial reciprocal antagonism is associated with exDNase production in environments with high bacterial loads, while diversity may increase in environments with lower bacterial loads.
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2022)
Review
Agriculture, Multidisciplinary
Ying Zhang, Ming Zhou, Yaqin Zhou, Xiao Guan
Summary: In recent years, research on gut microbiota as an immune organ has gained significant attention. This review discusses the composition and metabolites of gut microbiota and their impact on chronic diseases, including obesity, liver injury, colon cancer, atherosclerosis, and central nervous system diseases. The review also highlights the influence of different diet components on gut microbiota and their role in regulating related diseases.
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(2023)
Article
Food Science & Technology
Ruoyu Shi, Qiaoqiao Luo, Yutong Liu, Guannan Meng, Wei Chen, Chengtao Wang
Summary: It has been found that gamma-butyrolactone functions as a quorum sensing molecule in Monascus, significantly affecting the growth, morphology, and secondary metabolism of Monascus.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2022)
Review
Plant Sciences
YanYan Zhao, Annalisa Cartabia, Ismahen Lalaymia, Stephane Declerck
Summary: Medicinal plants can increase the quantity and quality of secondary metabolites by inoculating them with arbuscular mycorrhizal fungi (AMF), which can directly increase plant biomass and indirectly stimulate the synthesis of secondary metabolites. Different cultivation methods are also compatible with AMF and can affect the production of secondary metabolites.
Article
Plant Sciences
Siqi Liu, Xixian Zhu, Zhenchen Yan, Hui Liu, Lianhui Zhang, Wenjuan Chen, Shaohua Chen
Summary: Quorum sensing is a communication mechanism used by microorganisms to regulate population density and behavior. Quorum quenching, which interferes with this communication, shows promise in plant disease control. In this study, a quenching strain of Pseudomonas multiresinivorans QL-9a was isolated, and it demonstrated excellent degradation ability against signaling molecules and reduced the severity of bacterial soft rot caused by Pectobacterium carotovorum.
Article
Integrative & Complementary Medicine
Rostan Mangoua Talla, Alfred Ngenge Tamfu, Brussine Nadege Kweka Wakeu, Ozgur Ceylan, Celine Djama Mbazoa, Gilbert Deccaux Wabo Fotso Kapche, Bruno Ndjakou Lenta, Norbert Sewald, Jean Wandji
Summary: Due to the increasing antibiotic resistance, there is an urgent need to search for antimicrobial substances that can disrupt bacterial biofilms and quorum sensing. In this study, twenty compounds isolated from the medicinal plant Gambeya lacourtiana were evaluated for their antibiofilm and anti-quorum sensing effects against selected pathogenic bacteria. The results showed that most of the compounds inhibited violacein production and disrupted signal molecule reception.
BMC COMPLEMENTARY MEDICINE AND THERAPIES
(2023)
Article
Biotechnology & Applied Microbiology
Joao Evangelista de avila Santos, Maria Vieira de Brito, Antonia Torres avila Pimenta, Gisele Silvestre da Silva, Guilherme Juliao Zocolo, Celli Rodrigues Muniz, Suelen Carneiro de Medeiros, Thalles Barbosa Grangeiro, Mary Anne Sousa Lima, Christiana de Fatima Bruce da Silva
Summary: Fusarium kalimantanense, a genetic lineage of Fusarium oxysporum f. sp. cubense (Foc), is a pathogen causing Panama disease and damaging the global banana crop. Bacillus sp. (LPPC170) showed antagonist activity against F. kalimantanense (LPPC130) with inhibition of mycelial growth. The volatile organic compounds (VOCs) emitted from Bacillus sp., especially short-chain organic acids, were found to be responsible for inhibiting the mycelial growth of LPPC130.
WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY
(2023)
Article
Microbiology
Lucie Gebauer, Marie-Lara Bouffaud, Minh Ganther, Bunlong Yim, Doris Vetterlein, Kornelia Smalla, Francois Buscot, Anna Heintz-Buschart, Mika T. Tarkka
Summary: Amplicon sequencing was used to investigate the relative distribution of plant growth-promoting bacteria carrying the acdS gene in the rhizosphere environment, with Actinobacteria and Proteobacteria dominating the sequences and substrate exerting the strongest influence on their abundances.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Microbiology
Maria Rasul, Sumera Yasmin, Mahreen Yahya, Claudia Breitkreuz, Mika Tarkka, Thomas Reitz
Summary: The production and release of organic acids and phosphatase enzymes by microbes play a crucial role in the cycling of inorganic and organic phosphorus in soil. Screening for rhizosphere-competent strains with specific genes related to phosphorus solubilization can potentially improve plant uptake of phosphorus and reduce fertilizer application in agricultural soils.
MICROBIOLOGICAL RESEARCH
(2021)
Article
Agronomy
Minh Ganther, Doris Vetterlein, Anna Heintz-Buschart, Mika Tapio Tarkka
Summary: Soil texture and root hair formation have significant impacts on maize root gene expression patterns, affecting genes related to immunity, stress, growth, and water uptake. The influence of root hairs is mainly manifested in differential expression of genes related to epidermal cell differentiation, cell wall organization, and defense response.
Review
Microbiology
Michael Bonkowski, Mika Tarkka, Bahar S. Razavi, Hannes Schmidt, Evgenia Blagodatskaya, Robert Koller, Peng Yu, Claudia Knief, Frank Hochholdinger, Doris Vetterlein
Summary: The formation of microbial communities on plant roots is a complex and predictable process that plays a crucial role in plant-microbe relationships. By studying dynamic root traits in maize, insights can be gained into how root growth influences the assembly of microbiomes.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Microbiology
Claudia Breitkreuz, Laura Herzig, Francois Buscot, Thomas Reitz, Mika Tarkka
Summary: Rhizosphere microbial communities adapt their structural and functional compositions to water scarcity and can potentially alleviate drought stress in crops. This study shows that soil type, farming system, and wheat cultivar are important factors influencing the structural and functional adaptation of rhizobacterial communities in response to drought.
ENVIRONMENTAL MICROBIOLOGY
(2021)
Article
Agronomy
Yassine Aallam, Driss Dhiba, Taoufik El Rasafi, Sanaa Lemriss, Abdelmajid Haddioui, Mika Tarkka, Hanane Hamdali
Summary: The study found that the strains Streptomyces bellus and S. saprophyticus can significantly improve the growth and yield of sugar beet when mixed with insoluble natural rock phosphate and/or potassium mineral orthoclase in the soil. These strains also demonstrated a protective effect against root rot disease caused by Fusarium spp. Furthermore, the addition of these strains increased the levels of phosphorus and potassium in the soil.
Article
Agronomy
Doris Vetterlein, Maxime Phalempin, Eva Lippold, Steffen Schlueter, Susanne Schreiter, Mutez A. Ahmed, Andrea Carminati, Patrick Duddek, Helena Jorda, Gerd Patrick Bienert, Manuela Desiree Bienert, Mika Tarkka, Minh Ganther, Eva Oburger, Michael Santangeli, Mathieu Javaux, Jan Vanderborght
Summary: Root hairs play an important role in nutrient uptake in plants, especially in soils with high sorption capacity. Mutants with defective root hairs may have lower nutrient uptake unless they compensate with increased root growth. Root traits show high plasticity in response to soil texture, with differences in root to shoot ratio and adaptation of plants to different soil types impacting plant growth and nutrient uptake.
Article
Microbiology
Mahreen Yahya, Maria Rasul, Yasra Sarwar, Muhammad Suleman, Mohsin Tariq, Syed Zajif Hussain, Zahid Iqbal Sajid, Asma Imran, Imran Amin, Thomas Reitz, Mika Tapio Tarkka, Sumera Yasmin
Summary: Using phosphate-solubilizing bacteria (PSB) as biofertilizers shows great potential for sustainable agriculture. This study investigates the gene expression and formulation strategies of PSB. Results showed that the inoculated soil with rock phosphate (RP) had higher expression of key genes related to phosphate-solubilization compared to the control soil. Furthermore, a bioformulation using filter mud (FM) as a carrier material showed the best efficacy in increasing wheat grain yield and phosphorus content.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Microbiology
Lucie Gebauer, Claudia Breitkreuz, Anna Heintz-Buschart, Thomas Reitz, Francois Buscot, Mika Tarkka, Marie-Lara Bouffaud
Summary: Water deficit strongly impacts the composition of soil microbial communities and microorganisms with ACC deaminase activity, while successive drought conditions have a moderate influence. Plants grown on conventional farming soils are able to select more adapted microbial taxa, including beneficial Actinobacteria Streptomyces and Proteobacteria, enhancing drought adaptation in cereals.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Esmaeil Karimi, Nasser Aliasgharzad, Ezatollah Esfandiari, Mohammad Bagher Hassanpouraghdam, Thomas R. Neu, Francois Buscot, Thomas Reitz, Claudia Breitkreuz, Mika T. Tarkka
Summary: This study investigated the role of bacterial biofilm formation in plant growth promoting activity under drought stress. The results showed that bacteria forming biofilm were able to attenuate the adverse effects of water deficit on plant growth by improving root traits and antioxidant defense system of wheat.
Article
Agronomy
Bunlong Yim, Zeeshan Ibrahim, Lioba Rueger, Minh Ganther, Lorrie Maccario, Soren J. Sorensen, Anna Heintz-Buschart, Mika T. Tarkka, Doris Vetterlein, Michael Bonkowski, Evgenia Blagodatskaya, Kornelia Smalla
Summary: Soil texture, presence or lack of root hairs, and depth have significant impacts on rhizosphere microbiome assembly and soil potential extracellular enzyme activities, with soil texture being the most important driver.
Review
Microbiology
Marzieh Ebrahimi-Zarandi, Roohallah Saberi Riseh, Mika T. Tarkka
Summary: Pathogen suppression and induced systemic resistance are alternative strategies for sustainable agriculture, and Actinobacteria have been widely used as biocontrol agents. Actinobacteria not only produce substances and enzymes that antagonize pests, but also stimulate plant growth. They can also induce systemic resistance against pathogens, but the mechanisms are still unclear.
Article
Plant Sciences
Minh Ganther, Eva Lippold, Manuela Desiree Bienert, Marie-Lara Bouffaud, Mario Bauer, Louis Baumann, Gerd Patrick Bienert, Doris Vetterlein, Anna Heintz-Buschart, Mika Tapio Tarkka
Summary: Understanding the importance of root hairs for maize nutrition, carbon allocation, and gene expression is crucial in assessing their contributions to plant growth. This study found that root hairs stimulated maize shoot growth and total nutrient uptake, but other parameters were influenced more by growth stage and soil texture. Further research should investigate the relationship between root hair functioning and observed losses in maize productivity and growth efficiency.
Article
Plant Sciences
Lioba Rueger, Minh Ganther, Jule Freudenthal, Jan Jansa, Anna Heintz-Buschart, Mika Tapio Tarkka, Michael Bonkowski
Summary: Plants have a significant impact on the development of microbial communities in their rhizosphere, and the role of root caps and specific root zones in microbial community assembly is still unclear. In this study, the composition of prokaryote and protist microbiomes along maize roots was compared between intact and decapped roots, as well as between wild type and root hairless mutant. The absence of root caps had a stronger effect on microbiome composition than the absence of root hairs, affecting microbial community composition at older root zones and higher trophic levels.
Article
Forestry
Robert Reuter, Olga Ferlian, Mika Tarkka, Nico Eisenhauer, Karin Pritsch, Judy Simon
Summary: The inorganic and organic nitrogen acquisition of temperate tree species is found to be influenced more by the competitive environment and availability of specific nitrogen sources in the soil rather than the type of mycorrhizal association.