Article
Biochemistry & Molecular Biology
Tingting Shen, Ning Jia, Shanshan Wei, Wenyan Xu, Tingting Lv, Jiaoteng Bai, Bing Li
Summary: The mitochondria-localized heat shock protein mtHSC70-1 in Arabidopsis plays a crucial role in regulating root development and growth through the modulation of reactive oxygen species homeostasis and polar auxin transport.
Article
Plant Sciences
Sapana Nongmaithem, Rachana Ponukumatla, Yellamaraju Sreelakshmi, Pierre Frasse, Mondher Bouzayen, Rameshwar Sharma
Summary: Our study reveals a connection between polar auxin transport (PAT) and glutathione levels in tomato similar to Arabidopsis. Furthermore, TIBA rescues the short root phenotype of the pct1-2 mutant by acting on a PAT component distinct from the site of action of other PAT inhibitors.
JOURNAL OF PLANT GROWTH REGULATION
(2021)
Article
Biochemistry & Molecular Biology
Meng Wang, Panpan Li, Yao Ma, Xiang Nie, Markus Grebe, Shuzhen Men
Summary: The composition of plant membrane sterols has been found to antagonistically affect auxin biosynthesis, thus influencing plant growth and gravitropism. This study sheds light on a previously unexplored sterol-dependent modulation of auxin biosynthesis during root elongation in Arabidopsis.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Biochemistry & Molecular Biology
Haiyue Ai, Julia Bellstaedt, Kai Steffen Bartusch, Lennart Eschen-Lippold, Steve Babben, Gerd Ulrich Balcke, Alain Tissier, Bettina Hause, Tonni Grube Andersen, Carolin Delker, Marcel Quint
Summary: Roots are able to sense and respond to elevated temperature independently of shoot-derived signals. This response is mediated by an unknown root thermosensor that uses auxin as a messenger to relay temperature signals to the cell cycle. Growth promotion is primarily achieved by increasing cell division rates in the root apical meristem, dependent on de novo local auxin biosynthesis and temperature-sensitive organization of the polar auxin transport system.
Article
Biochemistry & Molecular Biology
Michael Stitz, David Kuster, Maximilian Reinert, Mikhail Schepetilnikov, Beatrice Berthet, Jazmin Reyes-Hernandez, Denis Janocha, Anthony Artins, Marc Boix, Rossana Henriques, Anne Pfeiffer, Jan Lohmann, Emmanuel Gaquerel, Alexis Maizel
Summary: Plant organogenesis requires the matching of metabolic resources with developmental programs. The root system in Arabidopsis is determined by primary root-derived lateral roots (LRs) and adventitious roots (ARs) formed from non-root organs. Lateral root formation requires the activation of transcription factors ARF7, ARF19, and LBD16. Adventitious root formation relies on the activation of LBD16 by auxin and WOX11. The allocation of shoot-derived sugar to the roots affects branching, but the mechanism of LRs formation is still unknown.
Article
Biochemistry & Molecular Biology
Houjun Zhou, Haiman Ge, Jiahong Chen, Xueqin Li, Lei Yang, Hongxia Zhang, Yuan Wang
Summary: This study reveals the mechanism by which high concentration of SA affects gravitropic root growth and root hair development in plants. The regulation of PIN2 gene transcription and endocytosis of PIN2 protein are involved in this process. Exogenous SA application inhibits gravitropic root growth and root hair development by affecting auxin accumulation and PIN2 distribution.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Biochemistry & Molecular Biology
Ana Smolko, Natasa Bauer, Iva Pavlovic, Ales Pencik, Ondrej Novak, Branka Salopek-Sondi
Summary: Salt and osmotic stress have significant effects on the auxin metabolome and distribution, leading to changes in gene expression levels. Long-term salt stress resulted in stable auxin metabolites but altered distribution and gene expression profiles.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Plant Sciences
Jiehua Wang, Muhammad Moeen-ud-din, Shaohui Yang
Summary: Zinc has dose-dependent effects on both vegetative and reproductive growth of Arabidopsis, regulated by differences in auxin synthesis and transport. Exogenous IAA can alleviate zinc-induced short-root phenotype by affecting auxin accumulation, while mutants with deficient auxin mechanisms exhibit hypersensitivity to zinc.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2021)
Article
Plant Sciences
Huirui Guan, Xin Liu, Yanping Fu, Xiaomin Han, Yanli Wang, Qing Li, Liang Guo, Luis A. J. Mur, Yahui Wei, Wei He
Summary: In this study, physiological and genetic analyses were conducted to show that A. oxytropis promotes growth and development in plants by regulating auxin, suggesting a possible role in benefiting its locoweed hosts independent of its toxin production.
JOURNAL OF EXPERIMENTAL BOTANY
(2023)
Article
Plant Sciences
Yuki Nakashima, Yuka Kobayashi, Mizuki Murao, Rika Kato, Hitoshi Endo, Asuka Higo, Rie Iwasaki, Mikiko Kojima, Yumiko Takebayashi, Ayato Sato, Mika Nomoto, Hitoshi Sakakibara, Yasuomi Tada, Kenichiro Itami, Seisuke Kimura, Shinya Hagihara, Keiko U. U. Torii, Naoyuki Uchida
Summary: A compound called PLU has been discovered to induce the formation of pluripotent callus in plants without the need for external hormone application. The PLU-induced callus expresses marker genes associated with pluripotency acquisition. This study provides a new approach to manipulate and investigate the induction of plant pluripotency.
FRONTIERS IN PLANT SCIENCE
(2023)
Review
Plant Sciences
Yunze Fu, Hao Zhang, Yuru Ma, Cundong Li, Ke Zhang, Xigang Liu
Summary: The key plant hormone auxin plays a crucial role in plant growth and development. It regulates gene expression through distinct AUXIN RESPONSE FACTORs (ARFs) to control various processes. Among the ARFs, ARF3/ETTIN (ETT) is involved in the coordination of multiple developmental processes during the reproductive phase. Mutations in arf3 have pleiotropic effects on reproductive development, leading to abnormalities in various aspects. The precise regulation of ARF3 at different levels highlights its importance in plant development.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Plant Sciences
Drishti Mandal, Saptarshi Datta, Giridhar Raveendar, Pranab Kumar Mondal, Ronita Nag Chaudhuri
Summary: RAV1 gene plays an important role in regulating root growth. The expression of RAV1 gene is suppressed in mutant, resulting in impaired cytokinin signaling and altered auxin transport and distribution, ultimately affecting the meristem size of the root.
Article
Plant Sciences
Mark K. Jenness, Reuben Tayengwa, Gabrielle A. Bate, Wiebke Tapken, Yuqin Zhang, Changxu Pang, Angus S. Murphy
Summary: FK506-binding protein 42/Twisted dwarf 1 directly regulates multiple ATP-binding cassette (ABC) transporters. Loss of function of ABCB6 and ABCB20 contributes to the additional phenotypes observed in TWD1 mutants compared to abcb1 abcb19 mutants. Other ABCB transporters participate in localized auxin streams or alternate transport substrates.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Shuang Yang, Tianqi Zhang, Ze Wang, Xiaofei Zhao, Rui Li, Jing Li
Summary: In this study, it was found that NIT1/2/3 positively regulate flowering by repressing MAF4 through manipulating H3K4me3 modification. This finding provides new insights into the regulatory mechanisms of plant adaptation and growth development.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Biochemistry & Molecular Biology
Xuehuan Dai, Qing Lu, Jing Wang, Lili Wang, Fengning Xiang, Zhenhua Liu
Summary: The study demonstrates that miR160 and its target genes ARF10, ARF16, and ARF17 modulate hypocotyl elongation in Arabidopsis in a light, brassinazole (BRZ), or paclobutrazol (PAC)-dependent manner, but have no effect in the dark.ARF10 represses the expression of PACLOBUTRAZOL RESISTANCE1 (PRE1) and 35S::PRE1 partly rescues the phenotype of mARF10, suggesting that PRE1 acts downstream of ARF10 in regulating hypocotyl elongation.
Review
Plant Sciences
Norbert Andrasi, Aladar Pettko-Szandtner, Laszlo Szabados
Summary: Plant heat shock factors (HSFs) are encoded by large gene families and are involved in responses to high temperatures and various abiotic stresses. They are regulated primarily at the transcript level, with alternative splicing and post-translational modifications providing additional variability. Plant HSFs participate in a complex network of protein-protein interactions and play crucial roles in transcriptional control.
JOURNAL OF EXPERIMENTAL BOTANY
(2021)
Article
Forestry
Vladislava Galovic, Marko Kebert, Boris M. Popovic, Branislav Kovacevic, Verica Vasic, Mary Prathiba Joseph, Sasa Orlovic, Laszlo Szabados
Summary: Halomorphic soils pose ecological and economic challenges in the Vojvodina region. This study compared four economically important Serbian poplar clones for their responses to salt stress, aiming to select the most tolerant clones for afforestation. The results indicated that clones M1 and PE19/66 showed strong salt stress-responsive genes, suggesting their potential for efficient phytoremediation in salt environments.
Article
Biochemistry & Molecular Biology
Agnes Cseplo, Laura Zsigmond, Norbert Andrasi, Abu Imran Baba, Nitin M. Labhane, Andrea Peto, Zsuzsanna Kolbert, Hajnalka E. Kovacs, Gabor Steinbach, Laszlo Szabados, Attila Feher, Gabor Rigo
Summary: The study reveals that Arabidopsis AtCRK5 protein kinase is involved in establishing the auxin gradient at root tips, and the delayed gravitropic response in the Atcrk5-1 mutant is associated with oxidative stress and nitric oxide levels. Treatment with oxidative stress inducers or H2O2 can partially restore proper auxin distribution.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Review
Plant Sciences
Maria E. Alvarez, Arnould Savoure, Laszlo Szabados
Summary: Proline is a multifunctional amino acid that accumulates in plants under various stress conditions, playing a role in regulating osmotic pressure, energy status, nutrient availability, redox balance, and defense against pathogens. Its biosynthesis and catabolism are linked to photosynthesis and mitochondrial respiration, and it can also function as a signal regulating gene expression and metabolic processes. This amino acid plays an important role in maintaining cellular homeostasis, regulating plant development, and promoting stress acclimation.
TRENDS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Dalma Menesi, Eva Klement, Gyorgyi Ferenc, Attila Feher
Summary: Plant Rho-type GTPases (ROPs) are versatile molecular switches involved in various signal transduction pathways, but their direct interaction with protein kinases is not well understood. Although phosphorylation may regulate ROPs as in animal counterparts, there is limited experimental evidence. The study focused on potential phosphorylation sites of AtROP1 and different ROP-kinases, revealing new insights into the phosphorylation regulation of ROPs.
Article
Biochemistry & Molecular Biology
Riyazuddin Riyazuddin, Krisztina Bela, Peter Poor, Agnes Szepesi, Edit Horvath, Gabor Rigo, Laszlo Szabados, Attila Feher, Jolan Csiszar
Summary: Plants contain GPXL enzymes, which play an important role in ethylene signaling and are related to ROS levels.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Plant Sciences
Dora Farago, Laura Zsigmond, Daniel Benyo, Ruben Alcazar, Gabor Rigo, Ferhan Ayaydin, Sahilu Ahmad Rabilu, Eva Hunyadi-Gulyas, Laszlo Szabados
Summary: This study reveals the regulatory role of Small Paraquat resistance protein (SPQ) in the adaptation of higher plants to extreme environmental conditions. Overexpression of SPQ enhances resistance to paraquat and sensitivity to abscisic acid (ABA). Knockout mutant of SPQ1 shows slightly different responses to these substances. Moreover, overexpression of SPQ improves drought tolerance in plants.
PLANT CELL AND ENVIRONMENT
(2022)
Review
Biochemistry & Molecular Biology
Abu Imran Baba, Mohd Yaqub Mir, Riyazuddin Riyazuddin, Agnes Cseplo, Gabor Rigo, Attila Feher
Summary: Plants are essential for a balanced life on Earth, providing food and oxygen. The study of plants in space exploration can contribute to the development of life support technologies for long-term space missions. However, our knowledge about how plants sense and adapt to microgravity in space is limited. Investigating the ability of plants to survive in microgravity is important for providing food for astronauts and understanding plant adaptation to unique environments.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Review
Biochemistry & Molecular Biology
Peter Benko, Katalin Gemes, Attila Feher
Summary: The metabolism and regulation of cellular polyamines play a crucial role in maintaining cell homeostasis and function. Polyamine oxidases (PAOs) generate hydrogen peroxide (H2O2) during catabolic and back-conversion processes, which has been found to be involved in various plant developmental processes and stress responses. The relationship between PAOs and NADPH oxidases (RBOHs) in controlling cellular reactive oxygen species is discussed, suggesting that these enzymes regulate each other's abundance/function indirectly through H2O2.
Article
Plant Sciences
Nikolett Kaszler, Peter Benko, Arpad Molnar, Abigel Zambori, Attila Feher, Katalin Gemes
Summary: Arabidopsis POLYAMINE OXIDASE 5 (AtPAO5) is found to contribute to the formation of shoot meristems (SMs) from lateral root primordia (LRPs) by regulating the thermospermine (T-Spm) level and controlling cytokinin sensitivity. The expression of AtGLB1 and AtGLB2, which enhance cytokinin sensitivity, is downregulated in the pao5-2 mutant and with exogenous T-Spm treatment. This indirectly inhibits the expression of type-A ARABIDOPSIS RESPONSE REGULATORs (ARRs) and leads to upregulation of ARR-coding genes in the pao5-2 mutant.
Article
Biology
Timea Boroczky, Gabriella Dobra, Matyas Bukva, Edina Gyukity-Sebestyen, Eva Hunyadi-Gulyas, Zsuzsanna Darula, Peter Horvath, Krisztina Buzas, Maria Harmati
Summary: Extracellular vesicle (EV) research is rapidly developing due to its crucial role in intercellular communication and pathophysiological processes. However, the heterogeneity of EVs presents challenges in their exploration and establishment of gold-standard methods. This study aimed to investigate the influence of technical changes on EV biology and the reliability of experimental data.
Article
Multidisciplinary Sciences
Kirsten I. Verster, Gyoengyi Cinege, Zoltan Lipinszki, Lilla B. Magyar, Eva Kurucz, Rebecca L. Tarnopol, Edit Abraham, Zsuzsanna Darula, Marianthi Karageorgi, Josephine A. Tamsil, Saron M. Akalu, Istvan Ando, Noah K. Whiteman
Summary: Toxin cargo genes can be transferred horizontally between bacterial species through phages and play a crucial role in bacterial pathogenesis evolution. This study found that these genes have also been transferred from phage or bacteria to animals, resulting in novel adaptations. Through horizontal gene transfer, bacterial genes encoding toxins of animal cells have been captured by insect genomes. These genes and their encoded proteins were found to be expressed by immune cells in insects and played a role in resistance against parasitoid wasps. The findings suggest that phage or bacterially derived eukaryotic toxin genes can drive the rapid evolution of novelty in animals.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Plant Sciences
Erzsebet Kenesi, Zsuzsanna Kolbert, Nikolett Kaszler, Eva Klement, Dalma Menesi, Arpad Molnar, Ildiko Valkai, Gabor Feigl, Gabor Rigo, Agnes Cseplo, Christian Lindermayr, Attila Feher
Summary: Nitric oxide (NO) is a versatile signal molecule that regulates plant development by reversible S-nitrosation. The Arabidopsis ROP2 GTPase is identified as a potential target of NO-mediated regulation, which is required for the root shortening effect of NO. NO inhibits primary root growth by affecting PIN1 protein abundance and auxin accumulation. The study suggests that ROP2 GTPase is directly regulated by NO and discusses the potential mechanisms of NO-mediated ROP2 regulation and ROP2-mediated NO signaling in the root meristem.
Article
Biochemistry & Molecular Biology
Agnes Szepesi, Laszlo Bakacsy, Attila Feher, Henrietta Kovacs, Peter Palfi, Peter Poor, Reka Szollosi, Orsolya Kinga Gondor, Tibor Janda, Gabriella Szalai, Christian Lindermayr, Laszlo Szabados, Laura Zsigmond
Summary: Polyamine catabolism mediated by amine oxidases is important for regulating polyamine homeostasis and related mechanisms during salt stress. The effects of L-aminoguanidine (AG), an inhibitor of copper amine oxidases, on tomato roots exposed to short-term salt stress were studied. AG treatment alleviated the increase in reactive oxygen and nitrogen species caused by salt stress, suggesting its possible antioxidant effect.