Review
Biotechnology & Applied Microbiology
Jorge Poveda, Fernando Gonzalez-Andres
Summary: Microbial plant biostimulants (MPBs) enhance crop productivity and quality by activating plant physiological and molecular processes through phytohormone production. Bacillus species, a bacterial genus used as biopesticides, protect plants from pests and pathogens while promoting plant growth through various mechanisms, including increasing tolerance to stress conditions and improving plant nutrition. The production of phytohormones by Bacillus species plays a key role in increasing plant growth, development, and stress response.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2021)
Article
Plant Sciences
Ling Li, Xiaolong Sun, Wencai Yu, Mingchun Gui, Yanfen Qiu, Min Tang, Hai Tian, Guoping Liang
Summary: This study investigates the potential roles of phytohormones in somatic embryogenesis (SE) in rubber plants. Through analyzing the accumulation of phytohormones and gene expression changes in different stages of anther cultures, the study reveals the differential accumulation of phytohormones and their related genes in two different genotypes. The findings suggest the importance of phytohormones in SE in rubber plants.
Review
Biochemistry & Molecular Biology
Andrzej Bajguz, Alicja Piotrowska-Niczyporuk
Summary: Phytohormones have diverse chemical structures, primarily originating from three key metabolic precursors: amino acids, isoprenoids, and lipids. Specific amino acids contribute to the production of various phytohormones, while isoprenoids form the foundation of five phytohormone categories. Lipids function as a precursor for one type of phytohormone. Understanding the intricately complex biosynthesis routes of these plant hormones is crucial for understanding their regulation of plant growth, development, and physiology.
Article
Biochemistry & Molecular Biology
Caroline Teyssier, Odile Rogier, Stephane Claverol, Florian Gautier, Marie-Anne Lelu-Walter, Harold Durufle
Summary: This study presents the first large-scale proteomic analysis of Douglas fir, revealing the protein composition and distribution in different plant organs or tissues. The findings provide an important foundation for future genomic annotations of conifers and other trees.
Article
Biochemistry & Molecular Biology
Angel M. Zamarreno, Giancarlo Valduga, Jose M. Garcia-Mina
Summary: High doses of vinasse have positive effects on sugarcane yield. Besides mineral nutrients and soil properties, vinasse may contain plant hormones that benefit plant growth. The presence of IAA and ABA in vinasse suggests their potential role in enhancing sugarcane growth.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Plant Sciences
Gerardo Nunez-Lillo, Lissette Ulloa-Zepeda, Catalina Pavez, Anibal Riveros, Francisca Blanco-Herrera, Reinaldo Campos-Vargas, Romina Pedreschi, Claudio Meneses
Summary: Research shows that the NAC072 gene plays a regulatory role in auxin-related genes and terpene biosynthesis genes in fruit development, while the defect in slow-ripening fruit may be caused by the absence of this gene.
Article
Biochemistry & Molecular Biology
Chao Wu, Baoyu Liu, Xiujiao Zhang, Manlian Wang, Huiling Liang
Summary: Illicium difengpi, an endemic and medicinal plant found in karst mountain areas, has evolved strategies to adapt to arid environments. This study investigates the effects of drought and rehydration treatments on the leaf succulence, phytohormones, and phytohormonal signal transduction in I. difengpi plants. It is suggested that ABA, JA, and ZR play important roles in the response to severe drought in I. difengpi. Transcriptomic profiling also reveals differentially expressed genes involved in phytohormone biosynthesis and signal transduction in response to drought stress.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Forestry
Ladislav Holik, Jiri Volanek, Valerie Vranova
Summary: The presence of auxins was found to stimulate native proteolytic activity, while cytokinins, ethephon, and chlorocholine chloride inhibited it. These negative phytohormonal effects may slow down organic matter decomposition rates and complicate plant nutrition. This study enhances understanding of the effects of rhizosphere exudates on soil microbial activity and the nitrogen cycle.
Review
Biochemistry & Molecular Biology
Agnieszka Sirko, Anna Wawrzynska, Jerzy Brzywczy, Marzena Sienko
Summary: Plants require rapid and appropriate genetic and metabolic acclimation in a changing environment for survival, which is maintained through the coordinated action of plant hormones and cellular degradation mechanisms affecting proteostasis. The plant hormone abscisic acid (ABA) rapidly accumulates in response to environmental stress and plays a pivotal role in various stimuli reactions. Autophagy has been shown to significantly control ABA signaling, with ongoing research providing new insights on different components of the ABA pathway and the involvement of selective autophagy in ABA pathway control.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Plant Sciences
Batist Geldhof, Ondrej Novak, Bram van de Poel
Summary: Waterlogging-induced hypoxia in the root zone leads to adaptive responses in the shoot, such as leaf epinasty. This study analyzed the dynamics of multiple hormones in tomato leaves during waterlogging, revealing that leaf age determines hormone homeostasis and modulates changes during waterlogging. Early hormonal signals, including ethylene and abscisic acid, were found to induce epinasty, while the balance of indole-3-acetic acid and cytokinins in the petiole ultimately regulates differential growth.
JOURNAL OF EXPERIMENTAL BOTANY
(2023)
Article
Biochemistry & Molecular Biology
Angelo Del Mondo, Annamaria Vinaccia, Luigi Pistelli, Christophe Brunet, Clementina Sansone
Summary: Phytohormones are secondary metabolites with diverse chemical structures, which include auxins, cytokinins, gibberellins, and brassinosteroids. They play active roles in plant growth and defense, and some phytohormones have potential benefits for human health protection. By analyzing the interactions between 53 selected naturally occurring phytohormones and specific targets related to human metabolism and health protection/disease, this study identified 28 human targets. The bioprospecting study revealed that many phytohormones may have beneficial effects on human health, potentially influencing cellular processes such as immune response and cell cycle progression.
COMPUTATIONAL AND STRUCTURAL BIOTECHNOLOGY JOURNAL
(2023)
Article
Agronomy
Julia Stachurska, Iwona Sadura, Magdalena Rys, Michal Dziurka, Anna Janeczko
Summary: The aim of this study was to investigate hormonal imbalances and changes in protective heat shock proteins (HSP) during deacclimation in various cultivars of oilseed rape. Samples were collected from plants that were not acclimated, cold acclimated, and then deacclimated. Hormones such as abscisic acid, jasmonic acid, salicylic acid, gibberellins, auxins, and cytokinins were analyzed. Results showed a significant increase in abscisic acid concentration during cold acclimation, which decreased during deacclimation. Deacclimation also led to higher levels of growth hormones. The accumulation of HSP70 and HSP90 increased in three of the four tested cultivars during cold acclimation, but decreased during deacclimation. The changes in hormones and proteins are discussed in relation to frost tolerance.
Article
Forestry
Jill J. Beckmann, Rosemary L. Sherriff, Lucy P. Kerhoulas, Jeffrey M. Kane
Summary: In a study of an oak woodland in the North Coast of California, Oregon white oak was found to be more resistant to prolonged drought compared to Douglas-fir, with the white oak's drought resistance declining with increasing Douglas-fir competition and increasing with oak competition. The growth of Oregon white oak and Douglas-fir was influenced by different seasonal climate factors, but both species were more limited by Douglas-fir competition than climate.
FOREST ECOLOGY AND MANAGEMENT
(2021)
Article
Agronomy
Miriam Romero-Munoz, Alfonso Albacete, Amparo Galvez, Maria Carmen Pinero, Francisco M. del Amor, Josefa Lopez-Marin
Summary: Drought is a major limiting factor for plant growth, but the use of hydromulching can improve plant growth and mitigate the negative effects of drought through hormonal regulation.
Article
Biochemistry & Molecular Biology
Sajjan Grover, Earl Agpawa, Gautam Sarath, Scott E. Sattler, Joe Louis
Summary: Interactions among phytohormones are essential for providing tolerance of sorghum plants to aphids. Through screening of sorghum inbred lines, a tolerant genotype to sugarcane aphids was identified, displaying minimal plant biomass loss and a robust photosynthetic machinery despite higher aphid population. Phytohormone analysis revealed specific changes in hormone levels in the tolerant genotype, providing insights into the mechanisms of plant tolerance to sap-sucking aphids.
PLANT MOLECULAR BIOLOGY
(2022)