Francisco Ignacio Jasso-Robles, Carlos Eduardo Aucique-Perez, Sanja Ćavar Zeljković, Iñigo Saiz-Fernández, Pavel Klimeš, Nuria De Diego
{"title":"The loss-of-function of AtNATA2 enhances AtADC2-dependent putrescine biosynthesis and priming, improving growth and salinity tolerance in Arabidopsis.","authors":"Francisco Ignacio Jasso-Robles, Carlos Eduardo Aucique-Perez, Sanja Ćavar Zeljković, Iñigo Saiz-Fernández, Pavel Klimeš, Nuria De Diego","doi":"10.1111/ppl.14603","DOIUrl":"10.1111/ppl.14603","url":null,"abstract":"<p><p>Putrescine (Put) is a promising small molecule-based biostimulant to enhance plant growth and resilience, though its mode of action remains unclear. This study investigated the Put priming effect on Arabidopsis mutant lines (Atadc1, Atadc2, Atnata1, and Atnata2) under control conditions and salinity to understand its role in regulating plant growth. The Atadc2 mutant, characterized by reduced endogenous Put levels, showed insensitivity to Put priming without growth enhancement, which was linked to significant imbalances in nitrogen metabolism, including a high Gln/Glu ratio. Contrarily, the Atnata2 mutant exhibited significant growth improvement and upregulated AtADC2 expression, particularly under Put priming, highlighting these genes' involvement in regulating plant development. Put priming enhanced plant growth by inducing the accumulation of specific polyamines (free, acetylated, conjugated, or bound form) and improving light-harvesting efficiency, particularly in the Atnata2 line. Our findings suggest that AtNATA2 may negatively regulate Put synthesis and accumulation via AtADC2 in the chloroplast, impacting light harvesting in photosystem II (PSII). Furthermore, the Atadc2 mutant line exhibited upregulated AtADC1 but reduced AcPut levels, pointing to a cross-regulation among these genes. The regulation by AtNATA2 on AtADC2 and AtADC2 on AtADC1 could be crucial for plant growth and overall stress tolerance by interacting with polyamine catabolism, which shapes the plant metabolic profile under different growth conditions. Understanding the regulatory mechanisms involving crosstalk between AtADC and AtNATA genes in polyamine metabolism and the connection with certain SMBBs like Put can lead to more effective agricultural practices, improving plant growth, nitrogen uptake, and resilience under challenging conditions.</p>","PeriodicalId":20164,"journal":{"name":"Physiologia plantarum","volume":"176 6","pages":"e14603"},"PeriodicalIF":5.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142569410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Giulia Lauria, Costanza Ceccanti, Ermes Lo Piccolo, Hafsa El Horri, Lucia Guidi, Tracy Lawson, Marco Landi
{"title":"\"Metabolight\": how light spectra shape plant growth, development and metabolism.","authors":"Giulia Lauria, Costanza Ceccanti, Ermes Lo Piccolo, Hafsa El Horri, Lucia Guidi, Tracy Lawson, Marco Landi","doi":"10.1111/ppl.14587","DOIUrl":"https://doi.org/10.1111/ppl.14587","url":null,"abstract":"<p><p>Innovations in light technologies (i.e. Light Emitting Diodes; LED) and cover films with specific optical features (e.g. photo-selective, light-extracting) have revolutionized crop production in both protected environments and open fields. The possibility to modulate the light spectra, thereby enriching/depleting cultivated plants with targeted wavebands has attracted increasing interest from both basic and applicative research. Indeed, the light environment not only influences plant biomass production but is also a pivotal factor in shaping plant size, development and metabolism. In the last decade, the strict interdependence between specific wavebands and the accumulation of targeted secondary metabolites has been exploited to improve the quality of horticultural products. Innovation in LED lighting has also marked the improvement of streetlamp illumination, thereby posing new questions about the possible influence of light pollution on urban tree metabolism. In this case, it is urgent and challenging to propose new, less-impacting solutions by modulating streetlamp spectra in order to preserve the ecosystem services provided by urban trees. The present review critically summarizes the main recent findings related to the morpho-anatomical, physiological, and biochemical changes induced by light spectra management via different techniques in crops as well as in non-cultivated species. This review explores the following topics: (1) plant growth in monochromatic environments, (2) the use of greenhouse light supplementation, (3) the application of covering films with different properties, and (4) the drawbacks of streetlamp illumination on urban trees. Additionally, it proposes new perspectives offered by in planta photomodulation.</p>","PeriodicalId":20164,"journal":{"name":"Physiologia plantarum","volume":"176 6","pages":"e14587"},"PeriodicalIF":5.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142558417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yutong Sun, Sixue Chen, Inga R Grin, Dmitry O Zharkov, Bing Yu, Haiying Li
{"title":"The dual role of methylglyoxal in plant stress response and regulation of DJ-1 protein.","authors":"Yutong Sun, Sixue Chen, Inga R Grin, Dmitry O Zharkov, Bing Yu, Haiying Li","doi":"10.1111/ppl.14608","DOIUrl":"10.1111/ppl.14608","url":null,"abstract":"<p><p>Methylglyoxal (MG) is a highly reactive metabolic intermediate that plays important roles in plant salt stress response. This review explores the sources of MG in plants, how salt stress promotes MG production, and the dual role of MG under salt stress conditions. Both the positive role of low concentrations of MG as a signalling molecule and the toxic effects of high concentrations of MG in plant response to salt stress are discussed. The MG detoxification pathways, especially the glyoxalase system, are described in detail. Special attention is given to the novel role of the DJ-1 protein in the glyoxalase system as glyoxalase III to remove MG, and as a deglycase to decrease glycation damage caused by MG on DNA, proteins, and other biomolecules. This review aims to provide readers with comprehensive perspectives on the functions of MG in plant salt stress response, the roles of the DJ-1 protein in MG detoxification and repair of glycation-damaged molecules, as well as the broader functional implications of MG in plant salt stress tolerance. New perspectives on maintaining plant genome stability, breeding for salt-tolerant crop varieties, and improving crop quality are discussed.</p>","PeriodicalId":20164,"journal":{"name":"Physiologia plantarum","volume":"176 6","pages":"e14608"},"PeriodicalIF":5.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142591458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Dong Cheng, Huishan Qiu, Dan Zhou, Tianyu Lin, Lang Liu, Jiahui Nie, Qin He, Zhendong Tian
{"title":"Genome-wide identification and characterization of potato NRL gene family and functional analysis of StNRL-6 in response to Phytophthora infestans.","authors":"Dong Cheng, Huishan Qiu, Dan Zhou, Tianyu Lin, Lang Liu, Jiahui Nie, Qin He, Zhendong Tian","doi":"10.1111/ppl.14650","DOIUrl":"https://doi.org/10.1111/ppl.14650","url":null,"abstract":"<p><p>NPH3/RPT2-Like (NRL) proteins, as blue light receptor phototropin-interacting modules, regulate various aspects of physiological responses in light signaling. However, little information is available on NRL family members regulating plant immunity, especially concerning plants' late blight resistance to Phytophthora infestans. In this study, a systematical analysis of the potato NRL family was performed. In total, 35 StNRL genes were identified and phylogenetically classified into six subfamilies. Twelve StNRL genes were defined as seven pairs of segmental duplication, which was the major evolutionary driving force for StNRL expansion. Synteny analysis between the genomes of potato and Arabidopsis thaliana, tomato, and rice provided insights into evolutionary characteristics. Two StNRL family members, StNRL-6 and StNRL-7, interacted with the blue light photoreceptor Stphot1 and negatively regulated potato and Nicotiana benthamiana resistance against P. infestans. Moreover, the key motif RxSxS identified in the NRL family member is essential for StNRL-6 to interact with Stphot1 and enhance plant susceptibility to P. infestans. This comprehensive analysis of the StNRL family provides valuable information to elucidate key molecular mechanisms on how blue light regulates plant immunity.</p>","PeriodicalId":20164,"journal":{"name":"Physiologia plantarum","volume":"176 6","pages":"e14650"},"PeriodicalIF":5.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142780701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Correction to \"The effect of nitrogen source and levels on hybrid aspen tree physiology and wood formation\".","authors":"","doi":"10.1111/ppl.14655","DOIUrl":"https://doi.org/10.1111/ppl.14655","url":null,"abstract":"","PeriodicalId":20164,"journal":{"name":"Physiologia plantarum","volume":"176 6","pages":"e14655"},"PeriodicalIF":5.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142794967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Male sterility is related to the imbalance of reactive oxygen species homeostasis in Prunus sibirica.","authors":"Xinxin Wang, Yuncheng Zhang, Wenxuan Fan, Tingting Ren, Jianhua Chen, Shengjun Dong","doi":"10.1111/ppl.14610","DOIUrl":"https://doi.org/10.1111/ppl.14610","url":null,"abstract":"<p><p>Prunus sibirica is an economically important forest tree with great development prospects. To study the mechanisms of male sterile P. sibirica, we compared the phenotypic, cytological, and physiological characteristics of male sterile clone 1 with those of male fertile clone 60. Phenotypic characteristics of male sterile P. sibirica included abnormal anther dehiscence, short and unbent filaments, and distorted pollen. Cytological features of abnormal anther development in male sterile P. sibirica emerged following the late-uninucleate stage and were characterized by delayed tapetum degeneration, delayed and limited secondary thickening of the endothecium, and incomplete mitotic division of pollen. Physiological traits of male sterile P. sibirica included excessive accumulation of reactive oxygen species (ROS) and low antioxidant enzyme activity. At the early-binucleate stage, the content of malondialdehyde, superoxide radicals, and hydrogen peroxide in male sterile clone 1 was 2.48, 1.27, and 1.34 times of those in male fertile clone 60, respectively. At the late-binucleate stage, superoxide dismutase in male sterile clone 1 was 50.48% of that in male fertile clone 60, and peroxidase activity in male sterile clone 1 was 36.62% of that in male fertile clone 60. In conclusion, we identified the characteristics and critical period of male sterility in P. sibirica, revealing the association between an imbalance in ROS homeostasis and male sterility.</p>","PeriodicalId":20164,"journal":{"name":"Physiologia plantarum","volume":"176 6","pages":"e14610"},"PeriodicalIF":5.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142740136","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Metabolomic analysis of plant-derived nanovesicles and extracellular vesicles from Pinellia ternata: insights into a temporary immersion bioreactor system.","authors":"Fuxing Shu, Surendra Sarsaiya, Lili Ren, Leilei Jin, Yuhe Hu, Ling Qiao, Xiaoqing Xu, Guoguang Chen, Jishuang Chen","doi":"10.1111/ppl.70016","DOIUrl":"https://doi.org/10.1111/ppl.70016","url":null,"abstract":"<p><p>Plant-derived nanovesicles (PDNVs) and extracellular vesicles (EVs) represent a promising area of research due to their unique properties and potential therapeutic applications. Pinellia ternata (P. ternata) is well-known for its pharmacological properties but the PDNVs and EVs derived from it have been largely understudied. Previous studies have shown that a Temporary Immersion Bioreactor System (TIBS) plays an important role in controlling plant growth in order to obtain reproducible EVs and PDNVs. PDNVs were isolated from P. ternata plants and EVs were collected in the TIBS medium via ultra-high-speed differential centrifugation. Particle size, Zeta potentials and particle concentrations were assessed for PDNVs and EVs. Furthermore, non-targeted metabolomics was used to assess metabolic compositional differences between EVs and PDNVs, enabling the evaluation of the TIBS's quality control efficacy. Metabolomic profiling revealed 1072 metabolites in PDNVs and EVs, including 426 differential metabolites (DMs) distinguishing PDNVs from EVs: 362 DMs were positively correlated with PDNVs and 64 DMs were positively correlated with EVs; they were enriched across 17 KEGG pathways. PCA, PLS-DA, and metabolite sample correlation analyses showed high consistency between the replicates (PDNVs >0.87, EVs >0.93). This study demonstrated that TIBS is a performant system allowing consistency in generating PDNVs and EVs from P. ternata. We also highlighted the metabolic differences between PDNVs and EVs, guiding researchers in finding the bet system to produce efficient nanodrugs containing P. ternata pharmacological compounds.</p>","PeriodicalId":20164,"journal":{"name":"Physiologia plantarum","volume":"176 6","pages":"e70016"},"PeriodicalIF":5.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142864983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Alice Claude, Paul Nadam, Ludvine Brajon, Luis Leitao, Séverine Planchais, Valentin Lameth, Jean-François Castell, Younès Dellero, Arnould Savouré, Anne Repellin, Juliette Leymarie, Ruben Puga-Freitas
{"title":"The isohydric strategy of Platanus × hispanica tree shapes its response to drought in an urban environment.","authors":"Alice Claude, Paul Nadam, Ludvine Brajon, Luis Leitao, Séverine Planchais, Valentin Lameth, Jean-François Castell, Younès Dellero, Arnould Savouré, Anne Repellin, Juliette Leymarie, Ruben Puga-Freitas","doi":"10.1111/ppl.70021","DOIUrl":"https://doi.org/10.1111/ppl.70021","url":null,"abstract":"<p><p>Urban vegetation provides many ecosystem services like heat island mitigation. However, urban trees are subjected to the stresses that they are meant to alleviate, with drought being a main constraint. We investigated the drought response strategy of plane trees (Platanus × hispanica), focusing on stomatal regulation and metabolic remodelling. To address this question, a semi-controlled experiment was performed in an urban site with fourteen plane trees grown in containers. From May to June 2022, those trees were physiologically characterized in response to a controlled edaphic drought completed by a targeted metabolome analysis focused on amino acids, sugars, polyols and organic acids. Early P. × hispanica response to drought consisted in stomatal closure limiting carbon assimilation and osmotic adjustment, which was likely related to malate and trehalose accumulation. Both allowed the maintenance of stem water potential and Relative Water Content. As the drought became severe, when the extractable soil water content (eSWC) dropped below 30%, a non-stomatal limitation of photosynthesis was observed and was associated with photosynthetic apparatus damage (reduced chlorophyll content and decrease in F<sub>v</sub>/F<sub>m</sub>) and a further decline in carbon assimilation. When eSWC decreased below 25%, severe drought induced defoliation. Together, these results highlight the isohydric strategy of P. × hispanica, based notably on osmotic adjustment and explain its resistance to drought combined with other urban constraints. In the context of climatic change in cities, it would be interesting to analyse the impact of successive drought cycles in the long term, aiming for sustainable planning and management of urban trees.</p>","PeriodicalId":20164,"journal":{"name":"Physiologia plantarum","volume":"176 6","pages":"e70021"},"PeriodicalIF":5.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142864922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"TOR Inhibition Enhances Autophagic Flux and Immune Response in Tomato Plants Against PSTVd Infection.","authors":"Samanta Silva-Valencia, Francisco Vázquez Prol, Ismael Rodrigo, Purificación Lisón, Borja Belda-Palazón","doi":"10.1111/ppl.14606","DOIUrl":"10.1111/ppl.14606","url":null,"abstract":"<p><p>Viroids are small, non-coding RNA pathogens known for their ability to cause severe plant diseases. Despite their simple structure, viroids like Potato Spindle Tuber Viroid (PSTVd) can interfere with plant cellular processes, including transcriptional and post-transcriptional mechanisms, impacting plant growth and yield. In this study, we have investigated the role of the Target Of Rapamycin (TOR) signaling pathway in modulating viroid pathogenesis in tomato plants infected with PSTVd. Our findings reveal that PSTVd infection induces the accumulation of the selective autophagy receptor NBR1, potentially inhibiting autophagic flux. Pharmacological inhibition of TOR with AZD8055 mitigated PSTVd symptomatology by reducing viroid accumulation. Furthermore, TOR inhibition promoted the recovery of autophagic flux through NBR1. It primed the plant defense response, as evidenced by enhanced expression of the defense-related gene PR1b and S5H, a gene involved in the salicylic acid catabolism. These results suggest a novel role for TOR in regulating viroid-induced pathogenesis and highlight the potential of TOR inhibitors as tools for enhancing plant resistance against viroid infections.</p>","PeriodicalId":20164,"journal":{"name":"Physiologia plantarum","volume":"176 6","pages":"e14606"},"PeriodicalIF":5.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142626200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Editorial: Role of phytohormones and plant-growth regulators in the regulation of plant immunity.","authors":"Ravi Gupta, Poór Péter, Yiming Wang, Sun Tae Kim","doi":"10.1111/ppl.14599","DOIUrl":"https://doi.org/10.1111/ppl.14599","url":null,"abstract":"","PeriodicalId":20164,"journal":{"name":"Physiologia plantarum","volume":"176 6","pages":"e14599"},"PeriodicalIF":5.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142558418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}