Article
Microbiology
Shahid Ali, Naeem Khan
Summary: Drought stress is expected to have negative impacts on plant growth and productivity, but plants have evolved complex physiological and biochemical mechanisms to adapt to water-deficient environments. Plant growth-promoting rhizobacteria (PGPR) also play a significant role in alleviating plant drought stress, enhancing drought tolerance through various mechanisms such as producing volatile compounds and phytohormones.
MICROBIOLOGICAL RESEARCH
(2021)
Article
Plant Sciences
Francisco Quintas-Nunes, Pedro. R. R. Brandao, Maria. T. T. Barreto Crespo, Bernard. R. R. Glick, Francisco. X. X. Nascimento
Summary: This study presents a functional and genomic characterization of strain NFX-FRZ, a eukaryotic microalga belonging to the Micractinium genus, isolated from the rhizosphere of a plant in Portugal. The results show that strain NFX-FRZ belongs to a novel species, promotes tomato plant growth by synthesizing plant growth-promoting compounds and contains genes involved in phytohormone biosynthesis and signaling. This research provides insights into the importance of eukaryotic microalgae as plant growth-promoting agents and contributes to the understanding of phytohormone biosynthesis, signaling, and plant-microalgae interactions.
Article
Agronomy
Aswin Reddy Chilakala, Prachi Pandey, Athimoolam Durgadevi, Manu Kandpal, Basavanagouda S. Patil, Krishnappa Rangappa, Puli Chandra Obul Reddy, Venkategowda Ramegowda, Muthappa Senthil-Kumar
Summary: This study aimed to investigate the impact of drought on the dry root rot (DRR)-wilt complex in chickpea, compare the influence of different soil moisture levels and plant genotypes on disease occurrence and yield loss, and identify the role of phytohormones in plant defense against the complex.
FIELD CROPS RESEARCH
(2023)
Article
Agronomy
Herbert Mouse de Lima Targino, Viviane Siqueira Lima Silva, Indra Elena Costa Escobar, Paula Rose de Almeida Ribeiro, Carlos Alberto Tuao Gava, Paulo Ivan Fernandes-Junior
Summary: This study isolated and characterized thirteen yeasts from the roots of field grown maize. These yeasts, belonging to the Meyerozyma genus, showed potential for promoting plant growth and could be valuable resources for inoculant production.
Article
Multidisciplinary Sciences
Ali Afzal, Muhammad Yahya Khan, Zahir Ahmad Zahir, Hafiz Naeem Asghar, Atif Muhmood, Muhammad Rashid, Zeeshan Aslam, Syed Ayyaz Javed, Sajid Mahmood Nadeem
Summary: This study aimed to investigate the impact of microbial consortia on maize growth and yield under salt-affected conditions. Various combinations of pre-isolated bacterial strains were tested for their ability to mitigate salt stress on maize. The results showed that these strains exhibited compatibility and synergistic collaboration, with a high co-aggregation percentage of 80% under salt-affected conditions. Additionally, these strains were found to improve maize growth and yield through increased photosynthetic rate, relative water content, and grain yield. The most significant increase was observed when Burkholderia phytofirmans, Enterobacter aerogenes, and Pseudomonas fluorescens were combined, leading to a substantial increase in catalase and ascorbate concentration.
Article
Plant Sciences
Lijun Qin, Peidong Tian, Qunyao Cui, Shuping Hu, Wei Jian, Chengjian Xie, Xingyong Yang, Hong Shen
Summary: The study found that inoculation of Bacillus circulans GN03 significantly enhanced the growth promotion and disease resistance of cotton seedlings. This was achieved by altering the microbiota in and around the plant roots, increasing the accumulation of growth and disease resistance-related hormones, and up-regulating the expression of several related genes.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Engineering, Environmental
Siraphatsorn Anusaraporn, Rujira Dolphen, Paitip Thiravetyan
Summary: This study explores the role of silicate ore pretreatment and the biogenic siderophores produced by Bacillus thuringiensis in the bioleaching process of gold and other elements. The results show that an effective pretreatment method involves ball milling and ozonation, and the highest leachability is achieved through a two-step conditioning approach. The study also finds that commercial siderophores and amino acids can facilitate the leaching of gold and elements, offering a promising method for the efficient recovery of these valuable elements.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Environmental Sciences
Mahmoud R. Sofy, Akram A. Aboseidah, Samia A. Heneidak, Hoda R. Ahmed
Summary: This study focused on the role of isolated bacteria in alleviating the harmful effects of salt stress on plants. Results showed that treatment with endophytic bacteria significantly increased plant resistance to salt stress by enhancing enzymatic and non-enzymatic antioxidant defenses, osmolyte substances, and antioxidant enzyme gene expression. The use of endophytic bacteria also led to decreased Na+ accumulation and increased K+ uptake in plant tissues, ultimately improving salt tolerance in pea plants.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Biochemistry & Molecular Biology
Oleg S. Yuzikhin, Natalia E. Gogoleva, Alexander I. Shaposhnikov, Tatyana A. Konnova, Elena V. Osipova, Darya S. Syrova, Elena A. Ermakova, Valerii P. Shevchenko, Igor Yu. Nagaev, Konstantin V. Shevchenko, Nikolay F. Myasoedov, Vera I. Safronova, Alexey L. Shavarda, Anton A. Nizhnikov, Andrey A. Belimov, Yuri V. Gogolev
Summary: The research revealed that the strain Rhodococcus sp. P1Y can degrade ABA and produce dehydrovomifoliol. The generation of this metabolite is achieved by gradually shortening the acyl part of the ABA molecule.
Article
Microbiology
Lucas Dantas Lopes, Stephanie L. Futrell, Emma Bergmeyer, Jingjie Hao, Daniel P. Schachtman
Summary: This study investigated the effects of the plant-synthesized hormones IAA and ABA exuded by maize roots on the rhizobacterial communities. The results showed that the concentrations of IAA and ABA in root exudates significantly influenced the rhizobacterial communities at specific developmental stages. This study contributes to our understanding of the plant-microbiome interactions, demonstrating the role of IAA and ABA in shaping the maize rhizobiome.
FEMS MICROBIOLOGY ECOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Lucas Dantas Lopes, Peng Wang, Stephanie L. Futrell, Daniel P. Schachtman
Summary: Root exudates, particularly sugars and jasmonic acid (JA), influence the composition of maize rhizobacterial communities, with specific sugars having different effects at various developmental stages.
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Leilei Zhang, Monica Yorlady Alzate Zuluaga, Youry Pii, Angelica Barone, Stefano Amaducci, Begona Miras-Moreno, Erika Martinelli, Gabriele Bellotti, Marco Trevisan, Edoardo Puglisi, Luigi Lucini
Summary: This study investigated the effectiveness of plant growth-promoting rhizobacteria (PGPR) and arbuscular mycorrhizal fungi (AMF) in mitigating the harmful effects of cadmium and zinc stress in tomato plants. The results showed that microbial inoculations improved physiological parameters and induced differential accumulation of macro- and micronutrients, modulating nutrient uptake balance.
Review
Plant Sciences
Yucong Li, Yu Chen, Yansong Fu, Jiahui Shao, Yunpeng Liu, Wei Xuan, Guohua Xu, Ruifu Zhang
Summary: This review summarizes the rhizosphere microbial signals that modulate plant root-system architecture and the underlying signaling mechanisms, and considers their potential use in agricultural production. Every living organism on Earth depends on its interactions with other organisms. In the rhizosphere, plants and microorganisms constantly exchange signals and influence each other's behavior. Recent studies have shown that many beneficial rhizosphere microbes can produce specific signaling molecules that affect plant root-architecture and therefore could have substantial effects on above-ground growth. This review examines these chemical signals and summarizes their mechanisms of action, with the aim of enhancing our understanding of plant-microbe interactions and providing references for the comprehensive development and utilization of these active components in agricultural production. In addition, we highlight future research directions and challenges, such as searching for microbial signals to induce primary root development.
JOURNAL OF EXPERIMENTAL BOTANY
(2023)
Article
Agriculture, Multidisciplinary
Chao Deng, Ning Zhang, Xiaolong Liang, Tao Huang, Bingxue Li
Summary: A Bacillus strain, identified as Bacillus aryabhattai strain LAD, was isolated from long-term maize colonization soil. The study showed that LAD had phosphate-solubilizing and nitrogen-fixing functions that benefited plant growth. The treatment with LAD culture significantly influenced the root system development of corn seedlings and the structure of rhizosphere bacterial communities.
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(2022)
Article
Plant Sciences
Rahul Jain, Priyanka Bhardwaj, Shweta Guleria, Anita Pandey, Sanjay Kumar
Summary: Beneficial rhizobacteria play a vital role in plant health and growth. This study focused on a root colonizing Pseudomonas strain GBPI_506 that produces auxin, and its impact on the growth of Nicotiana benthamiana and biosynthesis of nicotine. The bacterium showed chemotaxis towards root exudates and enhanced plant biomass, increased sugar content, and promoted lateral root development in the inoculated plants. The study also revealed upregulation of nicotine biosynthesis genes and signaling genes involved in salicylic acid and jasmonic acid pathways, indicating the role of auxin, SA, and JA in facilitating LR development and nicotine biosynthesis.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2023)
Article
Forestry
Ricardo Duran, Jaime Zapata-Valenzuela, Claudio Balocchi, Sofia Valenzuela
TREES-STRUCTURE AND FUNCTION
(2018)
Review
Agronomy
A. Donoso, S. Valenzuela
Article
Agriculture, Multidisciplinary
Paulina Gonzalez, Katherine Sossa, Francisco Rodriguez, Eugenio Sanfuentes
CHILEAN JOURNAL OF AGRICULTURAL RESEARCH
(2018)
Article
Environmental Sciences
Daniela Lopez, Mario Sepulveda-Mardones, Nathaly Ruiz-Tagle, Katherine Sossa, Enrica Uggetti, Gladys Vidal
SCIENCE OF THE TOTAL ENVIRONMENT
(2019)
Article
Forestry
Paula Aguayo, Catalina Lagos, Daniel Conejera, Diego Medina, Marta Fernandez, Sofia Valenzuela
TREES-STRUCTURE AND FUNCTION
(2019)
Article
Forestry
Ricardo Duran, Victoria Rodriguez, Angela Carrasco, David Neale, Claudio Balocchi, Sofia Valenzuela
TREES-STRUCTURE AND FUNCTION
(2019)
Letter
Multidisciplinary Sciences
Steven H. Strauss, Wout Boerjan, Vincent Chiang, Adam Costanza, Heather Coleman, John M. Davis, Meng-Zhu Lu, Shawn D. Mansfield, Scott Merkle, Alexander Myburg, Ove Nilsson, Gilles Pilate, William Powell, Armand Seguin, Sofia Valenzuela
Article
Engineering, Environmental
Gloria Gomez, Miguel Salinas, Nathaly Ruiz-Tagle, Katherine Sossa, Gladys Vidal
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING
(2020)
Article
Fisheries
Jose M. Vidal, Claudio D. Miranda, Mery De la Fuente, Manuel Alarcon, German Aroca, Katherine Sossa, Pamela Ruiz, Homero Urrutia
Article
Environmental Sciences
Patricio Neumann, Daniela Lopez, Nathaly Ruiz-Tagle, Katherine Sossa, Gladys Vidal
Summary: Sono-thermal pre-treatment influences the microbial communities and activities in digesters, increasing methane yield, bacterial richness, and archaea concentration. However, it does not cause process inhibition or instability. Hydrolytic and acidogenic activities are similar among reactors and SRT, while methanogenic activity positively correlates with SRT.
WASTE AND BIOMASS VALORIZATION
(2021)
Article
Biotechnology & Applied Microbiology
Manuel Alarcon-Vivero, Nathaly Ruiz-Tagle Moena, Fidelina Gonzalez, Paz Jopia-Contreras, Estrella Aspe, Homero Urrutia Briones, Katherine Sossa Fernandez
Summary: The inhibitory effect of ammonia on methane production can be controlled by using acclimated biofilms enriched with ammonia tolerant methanogens.
BIOTECHNOLOGY LETTERS
(2022)
Article
Forestry
Jose Luis Ulloa, Paula Aguayo, Daniel Conejera, Rafael Rubilar, Claudio Balocchi, Sofia Valenzuela
Summary: This study identified potential candidate genes involved in drought tolerance in leaves and roots of Eucalyptus globulus through RNA-Seq analysis. Key genes induced by drought stress were discovered, and further validation using qRT-PCR showed differential expression in selected candidate genes in tolerant genotypes. The data generated could provide a basis for future research on drought tolerance mechanisms in E. globulus and for genetic improvement programs.
TREES-STRUCTURE AND FUNCTION
(2022)
Review
Forestry
Paula Aguayo, Marta Fernandez, Claudio Balocchi, Sofia Valenzuela
Summary: This article summarizes advances in cold tolerance, particularly the signaling pathways of cold genes in E. globulus. It discusses the physiological damage caused by cold stress, the regulation of cold acclimation, and the molecular response systems involved in the cold response in E. globulus.
TREES-STRUCTURE AND FUNCTION
(2023)
Article
Multidisciplinary Sciences
Q. Qi, Jiaqi Hu, Long Qu, Xiangning Jiang, Yang Gai, Sofia A. Valenzuela, Liwang Qi
Article
Plant Sciences
Glenda Fuentes, Anita Cisternas, Graciela Valencia, Maritza Mihoc, Eduardo Ruiz, Rodrigo Hasbun, Sofia Valenzuela, Carlos M. Baeza