Article
Plant Sciences
Yun Jiang, Yu Song, Chengyang Jiang, Xiang Li, Tingting Liu, Jiarui Wang, Changqing Chen, Jie Gao
Summary: A bacterial strain JI39 with plant growth-promoting traits was isolated from the rhizosphere soil of Panax ginseng. It was identified as Arthrobacter nicotinovorans and could produce high levels of indole-3-acetic acid, solubilize phosphate and potassium, and fix nitrogen. Strain JI39 significantly promoted the growth of ginseng, upregulated the expression of certain genes, and improved soil enzyme activity.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Agronomy
Betsie Martinez-Cano, Juan Fernando Garcia-Trejo, Arantza Elena Sanchez-Gutierrez, Manuel Toledano-Ayala, Genaro M. Soto-Zarazua
Summary: This study isolated a Bacillus pumilus strain with plant growth-promoting properties and evaluated its effects on phosphate solubilization, inhibition of fungal growth, seed germination, and seedling growth. The results show that Bacillus pumilus has the potential to increase stem thickness and leaf number in tomato and lettuce seedlings.
Article
Microbiology
Zongmu Yao, Yalin Chen, Shouyang Luo, Jilin Wang, Jiafan Zhang, Jianfeng Zhang, Chunjie Tian, Lei Tian
Summary: Wild rice, with its unique ability to resist biotic and abiotic stress, has different microbial community structures compared to cultivated rice. Screening of bacteria from the rhizosphere and phyllosphere of different wild rice varieties revealed strains with inhibitory effects on rice blast and the ability to dissolve nutrients. Potted experiments showed that certain bacterial strains had positive effects on the growth of cultivated rice and improved its resistance to rice blast.
Article
Microbiology
Ayaka Makino, Ryosuke Nakai, Yasuko Yoneda, Tadashi Toyama, Yasuhiro Tanaka, Xian-Ying Meng, Kazuhiro Mori, Michihiko Ike, Masaaki Morikawa, Yoichi Kamagata, Hideyuki Tamaki
Summary: This study identified four novel aquatic plant growth-promoting bacteria (PGPB) strains, named MRB1-4, from Lythrum anceps, which exhibited beneficial growth effects on duckweed Lemna minor. These strains produced indole-3-acetic acid and possessed similar plant growth-promoting traits as terrestrial PGPB. Phylogenetic analysis revealed that MRB-1, -3, and -4 were affiliated with known proteobacterial genera, while MRB2 was a potentially novel strain at the genus level. Furthermore, MRB3, a Pelomonas strain, was found to be epiphytic and adhered to the roots and fronds of duckweed.
Article
Microbiology
Tessa E. Reid, Vanessa N. Kavamura, Maider Abadie, Adriana Torres-Ballesteros, Mark Pawlett, Ian M. Clark, Jim Harris, Tim H. Mauchline
Summary: The research investigated the impact of inorganic chemical fertilizer application on rhizobacterial diversity in wheat, using 16S rRNA gene sequencing and predictive metagenomics. The results showed that fertilization reduced the abundance of potential plant growth-promoting rhizobacteria, suggesting the need for more targeted biofertilization strategies.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Microbiology
Sumanta Das, Kaniz Wahida Sultana, Indrani Chandra
Summary: The study identified a plant growth-promoting bacterium, Acinetobacter SuKIC24, isolated from contaminated Basilicum polystachyon, which exhibited strong phosphate solubilization ability and promoted plant growth effectively.
CURRENT MICROBIOLOGY
(2021)
Article
Environmental Sciences
Richard Yankey, Ibrahim N. A. Omoor, Joseph K. Karanja, Lifang Wang, Regassa Terefe Urga, Chew Hui Fang, Lin Dongmei, Hui Lin, Jacob Eyalira Okal, Ibrahim Lawandi Datti, Aimable Nsanzinshuti, Christopher Rensing, Zhanxi Lin
Summary: This study identified specific genes associated with plant growth promotion and cadmium tolerance in three bacteria strains associated with Pennisetum giganteum, and assessed their biosafety levels for potential use as biofertilizers. Analysis of PGP traits and genome analysis confirmed the beneficial activities of these strains, while a pathological study showed that they had no obvious toxicity on mice. Therefore, these strains are considered safe and recommended for environmental remediation and agricultural production purposes.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Multidisciplinary Sciences
Naser Lotfi, Ali Soleimani, Ramazan Cakmakci, Kourosh Vahdati, Parisa Mohammadi
Summary: There is a lack of information on the rhizosphere of nut-bearing trees where microbial populations can benefit roots and tree growth. The current research aimed to discover plant growth-promoting rhizobacteria (PGPR) in the rhizosphere of soil samples from around the root zone of six different genotypes of walnut trees. A large number of Bacillus strains were identified, and 78% of the strains showed drought-stress tolerance. Two promising strains, ZM39 and Cha43, were discovered and molecularly identified as Bacillus velezensis and Bacillus amyloliquefaciens, respectively. The discovery of new PGPR strains could potentially help walnut trees improve their adaptation mechanisms to drought stress.
SCIENTIFIC REPORTS
(2022)
Article
Plant Sciences
Carlos Esteban Guardiola-Marquez, Maria Teresa Santos-Ramirez, Melina Lizeth Figueroa-Montes, Eric Oswaldo Valencia-de los Cobos, Ivan Jesus Stamatis-Felix, Diego E. Navarro-Lopez, Daniel A. Jacobo-Velazquez
Summary: This study isolated and characterized plant growth-promoting microorganisms from agricultural and nonagricultural plants to formulate biofertilizers. The results showed that bacteria had better effects on plant growth than fungi, and potential bacterial species belonged to Pseudomonas, Pantoea, Serratia, and Rahnella genera. This study validated a high-throughput screening approach for microorganisms with plant growth-promoting potential
Article
Biochemistry & Molecular Biology
Ahmed Mohamed Aly Khalil, Saad El-Din Hassan, Sultan M. Alsharif, Ahmed M. Eid, Emad El-Din Ewais, Ehab Azab, Adil A. Gobouri, Amr Elkelish, Amr Fouda
Summary: Endophytic fungi isolated from leaves of Ephedra pachyclada showed varied antimicrobial activity, plant growth-promoting properties, and enzymatic activity, with Penicillium commune EP-5 demonstrating maximum IAA productivity. The selected fungal endophytes applied as bioinoculant to maize plants improved root lengths and vegetative growth features significantly compared to uninoculated plants.
Article
Agriculture, Multidisciplinary
Burak Alaylar
Summary: This study isolated endophytic Bacillus strains from Mentha longifolia in Turkey and evaluated their plant growth promoting properties. The results showed that these strains exhibited multiple plant growth promoting characteristics, indicating their potential as natural plant growth promoters.
TURKISH JOURNAL OF AGRICULTURE AND FORESTRY
(2022)
Article
Microbiology
Chen Chen, Miao Wang, Jingzhi Zhu, Yongwei Tang, Hanchao Zhang, Qiming Zhao, Minyu Jing, Yahua Chen, Xihui Xu, Jiandong Jiang, Zhenguo Shen
Summary: This study identifies a new mechanism in which plant growth-promoting bacteria (PGPB) affect DNA methylation in roots to promote plant growth. The results show that the assembly of the rhizosphere microbiome is driven by plant development, and DNA methylation modifications in roots remain functional even after the elimination of the inoculum from the microbiome.
Article
Plant Sciences
Martino Schillaci, Aida Raio, Fabiano Sillo, Elisa Zampieri, Shahid Mahmood, Muzammil Anjum, Azeem Khalid, Mauro Centritto
Summary: This study isolated seven bacterial strains from the olive rhizosphere and characterized them taxonomically and biochemically. It was found that these bacteria have the potential to enhance plant growth and protect them from environmental stresses. The strains belonging to Pseudomonas and Curtobacterium showed promising characteristics, including the ability to grow under osmotic or salinity stress and improve germination and early development in wheat.
Article
Microbiology
Mohammad Yaghoubi Khanghahi, Sabrina Strafella, Ignazio Allegretta, Carmine Crecchio
Summary: This research identified 12 bacterial strains with the ability to fix nitrogen, solubilize phosphates, potassium, and zinc, and thrive under various environmental conditions. Certain bacterial families were found to be more abundant in NT samples compared to CT, with significant differences in the relative abundance of Pseudomonadaceae. These strains can be recommended as plant growth promoters across a wide range of pH levels, salinity, and temperatures.
CURRENT MICROBIOLOGY
(2021)
Review
Food Science & Technology
Sughra Hakim, Tahir Naqqash, Muhammad Shoib Nawaz, Iqra Laraib, Muhammad Jawad Siddique, Rabisa Zia, Muhammad Sajjad Mirza, Asma Imran
Summary: The rhizosphere is a complex microhabitat comprised of plant roots, soil, and a diverse consortium of microorganisms. The conditions in the rhizosphere directly impact crop growth and yield. Plant growth-promoting rhizobacteria (PGPR) play a key role in improving soil health and supporting plant growth, both under normal and stressed environments.
FRONTIERS IN SUSTAINABLE FOOD SYSTEMS
(2021)
