Article
Plant Sciences
Faroza Nazir, Badar Jahan, Noushina Iqbal, Ashish B. Rajurkar, Manzer H. Siddiqui, M. Iqbal R. Khan
Summary: Methyl jasmonate (MeJA) plays an important role in the tolerance mechanisms of rice against arsenic (As) stress, protecting the rice from As-induced toxicity and improving its defense systems. The positive effects of MeJA on carbohydrate metabolism, photosynthesis, and growth under As stress are the result of its interaction with ethylene biosynthesis, reducing oxidative stress-induced cellular injuries and cell deaths.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2023)
Article
Plant Sciences
Fei Ding, Chuang Wang, Ning Xu, Meiling Wang
Summary: Cold stress negatively affects the growth, yields, and fruit quality of tomato plants. This study reveals the role of a ethylene response factor, SlERF.B8, in regulating jasmonate biosynthesis in tomato under cold stress. SlERF.B8 is transcriptionally enhanced by JA and cold stress, and silencing of SlERF.B8 leads to decreased JA accumulation and reduced cold tolerance. Additionally, SlERF.B8 acts as a transcriptional activator for JA biosynthesis genes and is regulated by the JA signaling mediator MYC2, forming a positive feedback loop.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2022)
Article
Plant Sciences
Tsubasa Shoji, Kazuki Saito
Summary: This study provides insights into the molecular mechanism of SGA biosynthesis and its regulation in eggplant, offering a theoretical basis for further understanding of the anti-nutritional defense in eggplant plants.
Review
Plant Sciences
Rainer Hedrich, Ines Kreuzer
Summary: All plants have electrical excitability, but only few can produce a well-defined action potential (AP). The Venus flytrap Dionaea muscipula is able to generate APs with a high firing frequency and speed, allowing it to catch small animals quickly. The captured prey triggers a certain number of APs, which influences the trapping decisions made by the flytrap. The typical Dionaea AP lasts 1 second and consists of five phases, each controlled by specific ion channels, pumps, and carriers.
Article
Plant Sciences
Na Song, Jinsong Wu
Summary: The production of phytoalexins scopoletin and scopolin in Nicotiana species is regulated by the coordinated action of jasmonate and ethylene signaling, with the transcription factor NaWRKY70 playing a key role.
JOURNAL OF EXPERIMENTAL BOTANY
(2023)
Review
Plant Sciences
Huang Huang, Yuan Chen, Shaohui Wang, Tiancong Qi, Susheng Song
Summary: Flower development and fertility are regulated by endogenous developmental signals and phytohormones, such as jasmonates, auxin, and gibberellin, as well as environmental cues. Jasmonates have been found to play essential roles in the regulation of flower development and fertility. This review provides an updated overview of the jasmonate pathway and its crosstalk in the modulation of flower/sexual organ development and fertility in various plant species.
JOURNAL OF EXPERIMENTAL BOTANY
(2023)
Article
Horticulture
Xiaoya Tao, Qiong Wu, Jiayin Li, Di Wang, Sanusi Shamsudeen Nassarawa, Tiejin Ying
Summary: MeJA treatment accelerated fruit ripening by enhancing ethylene production and up-regulating the genes associated with ethylene biosynthesis and signal transduction during postharvest tomatoes ripening.
SCIENTIA HORTICULTURAE
(2021)
Article
Plant Sciences
Yanan Chen, Panpan Feng, Boyan Tang, Zongli Hu, Qiaoli Xie, Shuang Zhou, Guoping Chen
Summary: Our research confirms that SlERF.F5 can directly regulate the promoter activity of ACS6 and interact with SlMYC2 to regulate tomato leaf senescence. Silencing of SlERF.F5 accelerates senescence induced by age, darkness, ethylene, and jasmonic acid, while overexpression of SlERF.F5 does not promote senescence. Moreover, SlERF.F5 affects chlorophyll content and the expression of genes related to the ethylene biosynthesis pathway and the jasmonic acid signaling pathway. Yeast two-hybrid experiments demonstrate that SlERF.F5 physically interacts with SlMYC2, thereby mediating jasmonic acid-induced leaf senescence.
PLANT CELL REPORTS
(2022)
Review
Plant Sciences
Ritesh Ghosh, Adelin Barbacci, Nathalie Leblanc-Fournier
Summary: Plants have the ability to remember events associated with environmental fluctuations through priming, allowing them to cope with future stressors more efficiently. Mechanical stimulation enhances plants' basal defence responses and stress tolerance, making it a potential priming method for sustainable agriculture.
JOURNAL OF EXPERIMENTAL BOTANY
(2021)
Article
Plant Sciences
Florent Figon, Ian T. Baldwin, Emmanuel Gaquerel
Summary: Plants can rapidly reconfigure phytohormone signaling networks to adapt to changing ecological conditions, with jasmonate (JA) and ethylene (ET) playing key roles in regulating leaf metabolites. Ethylene has been identified as a local modulator of phenolamide accumulation, while not affecting free polyamine levels.
PLANT CELL AND ENVIRONMENT
(2021)
Article
Food Science & Technology
Xiao-chen Yin, Shu-juan Ji, Shun-chang Cheng, Qian Zhou, Xin Zhou, Man-li Luo, Ming-jie Ma, Mei-Si Hu, Bao-dong Wei
Summary: The study demonstrated that exogenous methyl jasmonate (MeJA) can enhance the synthesis of aromatic esters in 'Nanguo' pears by regulating the activity and expression of enzymes involved in ethylene biosynthesis, indicating a close connection between MeJA, ethylene production, and aroma enhancement in fruits.
INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY
(2021)
Article
Biology
Qi Wang, Jingyan Sun, Ran Wang, Zhenhua Zhang, Nana Liu, Huanhuan Jin, Bojian Zhong, Ziqiang Zhu
Summary: HOOKLESS1 is a positive regulator of seedling hook establishment and originated in embryophytes. HLS1 in Arabidopsis thaliana not only plays a role in hook development and thermomorphogenesis but also delays flowering by interacting with transcription factor CO and repressing the expression of FT. HLS1 proteins from bryophytes or lycophyte can modulate thermomorphogenesis phenotypes in A. thaliana through a conserved gene regulatory network.
COMMUNICATIONS BIOLOGY
(2023)
Article
Cell Biology
Van Tran, Christian Stricker
Summary: The study investigated the release of Ca2+ from ER stores in boutons en passant of neocortical layer 5 pyramidal neurons, revealing the involvement of presynaptic ryanodine receptors in spontaneous Ca2+ transients (sCaTs) and increased Ca2+ accumulation during repetitive stimulation. The findings suggest a supralinear summation of Ca2+ from presynaptic ER stores, contributing to intracellular Ca2+ dynamics during neuronal activity.
Article
Plant Sciences
Mao Yang, Junbin Cheng, Min Yin, Jinsong Wu
Summary: Researchers have identified a new protein called NaMLP, which is a miraculin-like protein and a Kunitz trypsin inhibitor. This protein is regulated synergistically by JA and ethylene signals and provides resistance against Spodoptera litura in wild tobacco. The findings shed light on the complexity of trypsin inhibitor-based defense in response to insect herbivore attack.
PLANT CELL REPORTS
(2023)
Article
Plant Sciences
Trisna Tungadi, Lewis G. Watt, Simon C. Groen, Alex M. Murphy, Zhiyou Du, Adrienne E. Pate, Jack H. Westwood, Thea G. Fennell, Glen Powell, John P. Carr
Summary: Aphid-vectored viruses are effectively acquired or transmitted during brief stylet punctures of epidermal cells. In Arabidopsis thaliana, cucumber mosaic virus (CMV) induces feeding deterrence against polyphagous aphids by inhibiting phloem feeding but encouraging probing of epidermal cells. The resistance induced by CMV is dependent on jasmonate-mediated signalling, with greater effects observed on polyphagous aphids compared to crucifer specialist aphids.
MOLECULAR PLANT PATHOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Nikou Fotouhi, Michaela Fischer-Stettler, Gioia Lenzoni, Stephanie Stolz, Gaetan Glauser, Samuel C. Zeeman, Edward E. Farmer
Summary: This study demonstrates the important role of ACA10 and ACA12 genes in maintaining tissue excitability and defense against insect attack in Arabidopsis. Additionally, the findings suggest that the plant vasculature plays a crucial role in electrical signaling failure.
Article
Plant Sciences
Qian Wu, Stephanie Stolz, Archana Kumari, Edward E. Farmer
Summary: This study reveals the importance of the carboxy-terminal tails (C-tails) in the function of Arabidopsis Clade 3 GLUTAMATE RECEPTOR-LIKEs (GLRs) in wound-induced systemic signaling. The authors identify ISI1 as an interactor of GLR3.3 and demonstrate that a triresidue motif in the GLR3.3 C-tail binds to ISI1. The findings provide new insights into the regulation of GLRs and may have implications for future applications in engineering GLRs.
Article
Agriculture, Multidisciplinary
Luiz Leonardo Saldanha, Pierre-Marie Allard, Guilherme Dilarri, Santiago Codesido, Victor Gonzalez-Ruiz, Emerson Ferreira Queiroz, Henrique Ferreira, Jean-Luc Wolfender
Summary: This study investigated the chemical responses of Citrus leaves to Xanthomonas citri infection using a mass spectrometry-based metabolomic approach. It was found that the tryptophan metabolism pathway in Citrus leaves was activated, leading to the accumulation of N-methylated tryptamine derivatives. Additionally, several tryptamine derivatives showed inhibitory effects in vitro against X. citri.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2022)
Review
Plant Sciences
Yong-Qiang Gao, Edward E. Farmer
Summary: When plant cells are damaged, fluid carrying membrane depolarization elicitors is released, triggering water release from nearby cells for their transport away from the damaged sites. Plants produce electrical signals when attacked by herbivores, which can activate the synthesis of defense mediator jasmonate. These signals occur in response to elicitors released from damaged plant cells. The dispersal of membrane depolarization elicitors in wounded plants may involve osmoelectric siphon mechanisms, which rely on membrane depolarization, cell water shedding, membrane repolarization, and water uptake. The models proposed in this study may have implications for cell to cell transport of water and pathogen-derived regulators.
JOURNAL OF EXPERIMENTAL BOTANY
(2023)
Article
Biochemistry & Molecular Biology
Antonina Klimenko, Robin Huber, Laurence Marcourt, Dmitry Tabakaev, Alexey Koval, Salim Sh. Dautov, Tatyana N. N. Dautova, Jean-Luc Wolfender, Rob Thew, Yuri Khotimchenko, Emerson Ferreira Queiroz, Vladimir L. L. Katanaev
Summary: Through metabolite analysis, we have identified five new chlorin compounds from Ophiura sarsii and O. ooplax, demonstrating their potential applications in photodynamic therapy.
Article
Microbiology
Alexandre Le Loarer, Remy Marcellin-Gros, Laurent Dufosse, Jerome Bignon, Michel Frederich, Allison Ledoux, Emerson Ferreira Queiroz, Jean-Luc Wolfender, Anne Gauvin-Bialecki, Mireille Fouillaud
Summary: Despite advances in medicine and technology, deadly diseases are still a threat to humanity. To find effective treatments, research is focusing on unexplored habitats with unique biodiversity, such as the marine environment. Studies have shown the potential of bioactive compounds from marine organisms in treating diseases.
Article
Plant Sciences
Hugo Morin, Aurore Chetelat, Stephanie Stolz, Laurence Marcourt, Gaetan Glauser, Jean-Luc Wolfender, Edward E. Farmer
Summary: The connections between wound-response electrical signaling and jasmonate synthesis activation are not known. This study investigated the remodeling of jasmonate precursor pools in the leaf vasculature of Arabidopsis thaliana in response to injury. Metabolomics and NMR were used to analyze galactolipids and jasmonate precursors in undamaged and wounded plants, while DAD1-LIKE LIPASEs (DALLs) that regulate these precursor levels were identified. The study found a novel galactolipid, sn-2-OPDA-MGMG, containing the jasmonate precursor 12-oxo-phytodienoic acid (OPDA), in the veins. It was discovered that electrical signals triggered a rapid reduction of vascular OPDA-MGMGs, sn-2-OPDA-MGMG, and free OPDA pools. In mutant plants with reduced DALL2 function, there was a failure to build resting vascular sn-2-OPDA-MGMG and OPDA pools, resulting in less production of jasmonoyl-isoleucine (JA-Ile) upon wounding. DALL3 acted to suppress excessive JA-Ile production, while dall2 dall3 double mutants greatly reduced jasmonate signaling in leaves distal to wounds.
Article
Plant Sciences
Yong-Qiang Gao, Hugo Morin, Laurence Marcourt, Tsu-Hao Yang, Jean-Luc Wolfender, Edward E. Farmer
Summary: Ricca assays allow the direct introduction of compounds extracted from plants or organisms into the leaf vasculature, enabling the study of plant responses to external stimuli. This study identifies glutamate as the most active elicitor of membrane depolarization and reveals a potential link between GSL breakdown and glutathione in the generation of membrane depolarizing signals. It also suggests that chloride ions may play a role in wound-response membrane potential changes.
Article
Multidisciplinary Sciences
Chrysoula K. Pantazopoulou, Sara Buti, Chi Tam Nguyen, Lisa Oskam, Daan A. Weits, Edward E. Farmer, Kaisa Kajala, Ronald Pierik
Summary: Plants detect their neighbors through touch, which triggers a calcium response and drives leaf movement. This touch-induced hyponasty mechanism is adaptive and involves an increase in cytosolic calcium concentration in leaf tip trichomes.
NATURE COMMUNICATIONS
(2023)
Article
Multidisciplinary Sciences
Tsu-Hao Yang, Aurore Chetelat, Andrzej Kurenda, Edward E. Farmer
Summary: This study investigates the touch response in Arabidopsis thaliana and finds that the plant vasculature can generate electrical signals in response to touch. The touch-induced signals show diel regulation and are dependent on H+-ATPase genes expressed in companion cells.
Article
Agriculture, Multidisciplinary
Adriano Rutz, Jean-Luc Wolfender
Summary: Recent developments in mass spectrometry-based metabolite profiling have allowed for unprecedented qualitative coverage of complex biological extract composition. However, the use of electrospray ionization in metabolite profiling leads to multiple artifactual signals for a single analyte. In this study, we developed a generic qualitative and quantitative approach using a combination of liquid chromatography-mass spectrometry (LC-MS) and Charged Aerosol Detection (CAD) to annotate and contextualize features in a high-resolution tandem MS dataset. Signals not attributed to CAD peaks are considered minor metabolites. This approach enables the automatic assessment of the composition of single natural extracts or broader collections, facilitating new ingredient registrations or natural-extracts-based drug discovery campaigns.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2023)