Haijiao Dong, Qingli Wen, Bi Wu, Yutong Yan, Liwen Liang, Lin Yang, Yong Hu, Bo Zhang, Weibo Xie, Wujun Jin, Yongzhong Xing, Haiyang Liu
{"title":"Overexpressing OsCCT23 Delays Heading Date and Increases Grain Yield by Activating Ghd7 in Rice.","authors":"Haijiao Dong, Qingli Wen, Bi Wu, Yutong Yan, Liwen Liang, Lin Yang, Yong Hu, Bo Zhang, Weibo Xie, Wujun Jin, Yongzhong Xing, Haiyang Liu","doi":"10.1111/pce.15513","DOIUrl":"https://doi.org/10.1111/pce.15513","url":null,"abstract":"<p><p>Heading date and panicle architecture are pivotal traits that significantly influence rice yield. Here, we identified a gene OsCCT23 encoding a CCT domain-containing protein that delays heading by over 40 days and increases grain yield by 60-104% through overexpressing. Two types transcripts OsCCT23L and OsCCT23S were isolated by 5'RACE, and transgenic events demonstrated that the effect of the predominant transcript OsCCT23S, encoding an 81-aa protein without the B-box domain, is comparable to OsCCT23. OsCCT23 is predominantly expressed in leaves and follows a diurnal expression pattern with a peak at dawn. Overexpressing OsCCT23 upregulated the floral repressor Ghd7 and downregulated the floral inducer RID1, consequently led to the downregulation of Ehd1, Hd3a and RFT1. Additionally, it regulates the expression of certain circadian clock-related genes, including OsGI and OsTOC1. RNA in situ hybridisation analysis confirmed that OsCCT23 activates the expression of Ghd7 in the panicle branch meristem. OsCCT23 suppresses the expression of four OsCKX genes including Gn1a, which associate with cytokinin accumulation in panicles. Natural variation in OsCCT23 promoter identified by eGWAS associates its mRNA abundance and rice heading date. Consequently, OsCCT23 substantially delays heading and significantly increases grain yield, making it highly valuable for rice breeding.</p>","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143750419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Edward B Lochocki, Coralie E Salesse-Smith, Justin M McGrath
{"title":"PhotoGEA: An R Package for Closer Fitting of Photosynthetic Gas Exchange Data With Non-Gaussian Confidence Interval Estimation.","authors":"Edward B Lochocki, Coralie E Salesse-Smith, Justin M McGrath","doi":"10.1111/pce.15501","DOIUrl":"https://doi.org/10.1111/pce.15501","url":null,"abstract":"<p><p>Fitting mechanistic models, such as the Farquhar-von-Caemmerer-Berry model, to experimentally measured photosynthetic CO<sub>2</sub> response curves (A-C<sub>i</sub> curves) is a widely used technique for estimating the values of key leaf biochemical parameters and determining limitations to photosynthesis in vivo. Here, we present PhotoGEA, an R package with tools for C<sub>3</sub> A-C<sub>i</sub>, C<sub>3</sub> Variable J and C<sub>4</sub> A-C<sub>i</sub> curve fitting. In contrast to existing software, these automated tools use derivative-free optimizers to ensure close fits and they calculate non-Gaussian confidence intervals to indicate which parameter values are most reliable. Results from PhotoGEA's C<sub>3</sub> A-C<sub>i</sub> curve fitting tool are compared against other available tools, where it is found to achieve the closest fits and most reasonable parameter estimates across a range of curves with different characteristics. PhotoGEA's C<sub>3</sub> Variable J and C<sub>4</sub> A-C<sub>i</sub> fitting tools are also presented, demonstrating how they can provide insights into mesophyll conductance and the processes limiting C<sub>4</sub> photosynthesis at high CO<sub>2</sub> concentrations. PhotoGEA enables users to develop data analysis pipelines for efficiently reading, processing, fitting and analysing photosynthetic gas exchange measurements. It includes extensive documentation and example scripts to help new users become proficient as quickly as possible.</p>","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143750449","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Spatial Lipidomic Profiling Reveals Distinct Lipid Distribution Patterns in Poplar Buds During Growth and Dormancy.","authors":"Peipei Liu, Lulu Chen, Geng Zhang, Zijian Hu, Yuge Zhang, Qiao Zhao, Guifang Zhang, Xiaojuan Li","doi":"10.1111/pce.15517","DOIUrl":"https://doi.org/10.1111/pce.15517","url":null,"abstract":"<p><p>Dormancy is a critical adaptive feature for trees to respond effectively to environmental changes. Understanding the comprehensive mechanisms regulating dormancy in poplar is vital for the genetic improvement of forest trees. However, previous studies have typically used mixed-sample extraction, which fail to capture spatial tissue-specific responses. This study provides precise spatial lipidomics analysis of poplar buds during phases of growth and dormancy by employing an innovative technique combining liquid chromatography-tandem mass spectrometry with matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI) for precise spatial lipidomics analysis of poplar buds during phases of growth and dormancy. MALDI-MSI revealed that most phospholipids were uniformly distributed across all tissues in growing buds but localized in the bud axis during dormancy. Moreover, triacylglycerols, which serve a storage function, were observed to accumulate mainly within the shoot apical meristem tissue during dormancy. These findings highlight the unique spatial distribution patterns of lipids during bud growth and dormancy in poplar, emphasize the role of lipid metabolism in adapting to seasonal changes, and provide new approach for elucidating the lipidomics of seasonal growth patterns in trees.</p>","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143750451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Natural Variation in NIN-LIKE PROTEIN 4 Associated With Spike-Response to Nitrogen in Barley.","authors":"Zhizhong Zhang, Zengjie Hu, Shanggeng Xie, Asad Riaz, Guoping Zhang, Lingzhen Ye","doi":"10.1111/pce.15497","DOIUrl":"https://doi.org/10.1111/pce.15497","url":null,"abstract":"<p><p>Nitrogen (N) fertilisers increase crop yields; however, excessive application reduces nitrogen use efficiency (NUE) and causes environmental pollution, highlighting the urgent need for sustainable agricultural practices. This study investigated the response of tiller-related traits to nitrogen availability during barley domestication and breeding, aiming to identify genetic resources with high NUE. A total of 305 barley accessions were analyzed under two nitrogen levels, focusing on six tiller-related traits and their relationship with nitrogen supply. Domestication reduced tillers per plant (TPP) and nonproductive tillers per plant (NTPP), while breeding increased spikes per plant (SPP), proportion of productive tillers (PPT), and Spike-response to nitrogen (SRN). SRN was used as a key indicator to evaluate spike development under varying nitrogen conditions. Genome-Wide Association Study (GWAS) and RNA-seq analysis identified HvNLP4 as a key candidate gene regulating SRN, with haplotype analysis revealing that HvNLP4<sup>Hap1</sup>, associated with high SRN, underwent strong positive selection during domestication and breeding. Moreover, HvNLP4<sup>Hap1</sup> exhibited weaker induction under low nitrogen conditions, suggesting that avoiding its selection in future breeding programmes may enhance NUE in barley. These findings provide valuable insights for developing sustainable barley cultivars with improved nitrogen efficiency.</p>","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143750415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Di Wu, Siwei Zhang, Chunming Bai, Yifei Liu, Zhiyu Sun, Mingzhu Ma, Huan Liu, Jean Wan Hong Yong, Hans Lambers
{"title":"Supplementary Calcium Overcomes Nocturnal Chilling-Induced Carbon Source-Sink Limitations of Cyclic Electron Transport in Peanuts.","authors":"Di Wu, Siwei Zhang, Chunming Bai, Yifei Liu, Zhiyu Sun, Mingzhu Ma, Huan Liu, Jean Wan Hong Yong, Hans Lambers","doi":"10.1111/pce.15467","DOIUrl":"https://doi.org/10.1111/pce.15467","url":null,"abstract":"<p><p>'Calcium (Ca<sup>2+</sup>) priming' is an effective strategy to restore efficient carbon assimilation with undergoing unfavourable cold stress (day/night: 25°C/8°C). However, it is unclear how exogenous calcium strengthens the cyclic electron transfer (CET) to attain optimal carbon flux. To assess the nutrient fortification role of Ca<sup>2+</sup> (15 mM) in facilitating this process for peanuts, we added antimycin (AA, 100 μM) and rotenone (R, 100 μM) as specific inhibitors. Our results revealed that inhibiting CET caused a negative effect on photosynthesis. The Ca<sup>2+</sup> treatment accelerated the turnover of non-structural carbohydrates, and linear electron carriers while balancing the photosystem I (PSI) bilateral redox potential. The treatment also strengthened the PROTON GRADIENT REGULATION5 (PGR5)/PGR5-LIKE PHOTOSYNTHETIC PHENOTYPE1 (PGRL1) and the NADH dehydrogenase-like (NDH)-mediated CET, with plausible crosstalk between thioredoxin (Trx) system and Ca<sup>2+</sup> signalling, to regulate chloroplast redox homoeostasis. Specifically, exogenous Ca<sup>2+</sup> strengthened the PGR5/PGRL1-mediated CET by providing sufficient ATP and adequate photoprotection during the long-term exposure; the NDH-mediated CET served to alleviate limitations on the PSI acceptor side by translocating protons. This study demonstrated the effectiveness of harnessing optimal nutrient supply, in the form of foliar Ca<sup>2+</sup>-based sprays to strengthen the eco-physiological resilience of peanuts against cold stress.</p>","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143750454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ting Hong, Jiezhang Mo, Tangcheng Li, Nan Huang, Wenhua Liu, Honghao Liang, Pengbing Pei, Ping Li, Jing Chen, Hong Du
{"title":"Multi-Omics Analysis Reveals Adaptation Strategies of Marine Diatom to Long-Term Ocean Warming: Resource Allocation Trade-Offs and Epigenetic Regulation.","authors":"Ting Hong, Jiezhang Mo, Tangcheng Li, Nan Huang, Wenhua Liu, Honghao Liang, Pengbing Pei, Ping Li, Jing Chen, Hong Du","doi":"10.1111/pce.15482","DOIUrl":"https://doi.org/10.1111/pce.15482","url":null,"abstract":"<p><p>High CO<sub>2</sub> emissions originating from anthropogenic sources have resulted in ocean warming (OW), posing a severe threat to marine organisms and ecosystems. Recent evidence has shown that marine phytoplankton may acclimate and adapt to long-term OW. Whether and how marine diatoms-a functional group of phytoplankton that contributes to 40% of marine primary production-can adapt to long-term OW remains virtually unknown. The model marine diatom Phaeodactylum tricornutum was subjected to thermal stress (25°C, compared to the Control at 20°C) for 400 days (~400 generations), and physiological, transcriptomic, genetic and epigenetic analyses were performed to reveal the adaptation mechanisms under long-term OW. During the adaptation, regulation of resource allocation (e.g., photosynthesis, nitrogen metabolism, ribosomal synthesis and translation, carbon metabolism and heat shock response) at the genetic and transcriptional levels was linked to accumulated proteins, carbohydrates and particulate organic carbon, reduced lipid content, and enlarged cell size. Integrated analyses of histone modification (H3K27me3) and transcriptome data sets revealed the potential role of transposable elements and epigenetic regulation of transposable elements via histone modification in the adaptation of P. tricornutum to long-term thermal stress. These mechanistic insights may facilitate the modelling and prediction of OW-induced impacts on marine phytoplankton in the future.</p>","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143750406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Na Luo, Yann Vitasse, Arthur Gessler, Manuel G Walde
{"title":"Dealing With Two Stresses: Impact of a Damaging Spring Frost Followed by a Summer Drought on Saplings of Four Temperate Tree Species.","authors":"Na Luo, Yann Vitasse, Arthur Gessler, Manuel G Walde","doi":"10.1111/pce.15514","DOIUrl":"https://doi.org/10.1111/pce.15514","url":null,"abstract":"<p><p>Global warming increases the likelihood that temperate tree species will face damaging late spring frost (LSF) and severe summer drought during the same growing season. However, the interactive effects of these two stresses are barely explored. We investigated the physiological and growth responses of Acer campestre, Fagus sylvatica, Quercus robur and Quercus petraea saplings to artificially induced LSF and drought, focusing on stomatal gas exchange, carbon partitioning, nonstructural carbohydrates (NSCs), phenology and tree growth. LSF depleted NSCs and changed carbon allocation patterns 1 month after the event. Additionally, LSF decreased diameter increment and root growth of A. campestre and F. sylvatica in the current year. Drought affected gas exchange of all species, decreased NSCs of A. campestre, reduced biomass of Q. robur, and exacerbated the detrimental LSF effect on Q. robur's NSCs. Our findings indicate that saplings prioritized canopy restoration immediately after LSF, and favored reserve replenishment before growth until the end of the growing season. Furthermore, we highlight the risk that LSF and drought in the same year could push tree species beyond their physiological limits and we emphasize the importance of studying multiple stressors' interactions to better understand threshold effects that could profoundly alter forest ecosystems.</p>","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143750393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Central Role of Auxin in Orchestrating Apical Stem Cells in Plants.","authors":"Jun Ma, Yanan Wang, Suye Chen, Tongda Xu","doi":"10.1111/pce.15464","DOIUrl":"https://doi.org/10.1111/pce.15464","url":null,"abstract":"<p><p>Plant stem cells, residing in the shoot and root apical meristems, are fundamental for continuous growth and organ formation throughout the plant life cycle. Their regulation is driven by the convergence of endogenous developmental cues and exogenous environmental signals, making them pivotal to overall plant growth and development. Auxin, a key phytohormone, serves as a major internal signal, orchestrating stem cell initiation, maintenance, differentiation, and environmental adaptation through intricate biosynthesis, transport, and signaling networks. This review summarizes recent progress in understanding the cellular and molecular mechanisms by which auxin guides stem cell functions in both the shoot and root apical meristems. Through these insights, we explore how plants utilize auxin-driven pathways to optimize growth in ever-changing environments.</p>","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143727102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Proteomic, Transcriptomic, Biochemical and Physiological Investigations Shed Light on Responses to Low Temperature Stress in Two Contrasting Soybean Varieties.","authors":"Birra Bukhari, Changkui Guo, Jin Sun, Yapeng Han, Xiancong Lai, Chuxin Lin, Yingxiang Wang, Yuan Fang","doi":"10.1111/pce.15492","DOIUrl":"https://doi.org/10.1111/pce.15492","url":null,"abstract":"<p><p>Cold stress is the major abiotic factor limiting crop productivity. However, compared to model plant Arabidopsis Thaliana, crucial genes and underlying molecular mechanisms involved in soybean cold stress remain underexplored. Here, we investigate two national soybean cultivars, HH43 and HX3, bred from the northeast and southwest regions of China, which exhibit significant differences in cold tolerance. Morphological and biochemical examinations show that, compared to HH43, HX3 exhibits delayed wilting, reduced oxidative damage, and elevated antioxidant enzyme activities under low temperature (4°C). Transcriptomic analyses show distinct patterns between HH43 and HX3, in which HH43 displays a rapid gene response, while HX3 exhibits a gradual increase. Particularly, we identify MEblue and MEgreen modules related to cold stress and construct their GENIE3 networks. Key TFs such as ATAF1 and its potential targets were identified, which likely contribute to the cold tolerance differences between HH43 and HX3. Moreover, proteomic analyses reveal a broader and more sustained protein upregulation associated with maintaining metabolic activity and cellular homeostasis in cold-tolerant HX3, while limited proteomic response was observed in cold-sensitive HH43 and degradation of certain early responsive proteins. These findings provide substantial resources for further functional research and breeding cold-tolerant soybean cultivars.</p>","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143727037","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}