New Phytologist最新文献

{"title":"Belowground growth is the primary driver of radial oxygen loss from Typha angustifolia to sediment","authors":"Ilana R. Stein, Zoe G. Cardon","doi":"10.1111/nph.71593","DOIUrl":"https://doi.org/10.1111/nph.71593","url":null,"abstract":"Summary <jats:list list-type=\"bullet\"> <jats:list-item> Wetland plants must supply oxygen to their rhizomes and roots to maintain aerobic respiration despite soil anoxia. Excess oxygen can diffuse into the environment, strongly affecting rhizosphere biogeochemistry. This radial oxygen loss (ROL) has often been observed to increase in the daytime, perhaps supported by photosynthetic oxygen production and stomatal opening. However, dynamics in rhizosphere oxygen pools do not derive exclusively from diel cycles. </jats:list-item> <jats:list-item> Using oxygen‐sensitive planar optodes (and simultaneous leaf gas exchange measurements), we compared the timing and magnitude of variation in rhizosphere oxygen pools due to diel cycles vs root and rhizome development in the widespread aquatic macrophyte <jats:italic>Typha angustifolia</jats:italic> . </jats:list-item> <jats:list-item> Diel cycles drove only slight variation in oxygen pool sizes ( <jats:italic>c.</jats:italic> 5% oxygen saturation). Strongly oxygenated regions – regularly 25–30% oxygen saturation – appeared as roots and rhizomes grew, and then disappeared after several days of maturation. Expansive plumes of oxygen also developed upon the emergence of lateral roots and persisted for several weeks. </jats:list-item> <jats:list-item> These results indicate that root and rhizome development are dominant determinants of ROL in <jats:italic>T. angustifolia</jats:italic> . Seasonal and environmental controls over timing of belowground development likely have strong implications for rhizosphere biogeochemistry ranging from microbe‐controlled decomposition to redox‐sensitive transformation of metals in natural and managed systems. </jats:list-item> </jats:list>","PeriodicalId":214,"journal":{"name":"New Phytologist","volume":"8 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2026-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149086815","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":"BpSRK1 ‐mediated phosphorylation of BpERF3 relieves HDA6 ‐dependent chromatin repression to enhance drought tolerance in birch","authors":"Zhibo Wang, Zihang He, Xiuru Zhang, Zhongyuan Liu, Caiqiu Gao, Xingshun Song, Yucheng Wang","doi":"10.1111/nph.71624","DOIUrl":"https://doi.org/10.1111/nph.71624","url":null,"abstract":"Summary <jats:list list-type=\"bullet\"> <jats:list-item> Drought tolerance in plants requires rapid conversion of water‐deficit signals into protective transcriptional and epigenetic programs. Although ERF transcription factors (TFs) are central regulators of stress‐responsive gene expression, how drought‐induced kinase signaling is coupled to chromatin regulation and antioxidant gene activation remains unclear. </jats:list-item> <jats:list-item> Here, we identify the ERF TF BpERF3 as a phosphorylation‐dependent regulator of drought tolerance in birch ( <jats:italic>Betula platyphylla</jats:italic> ). Using transgenic and CRISPR‐Cas9 mutant lines, protein interaction assays, immunoaffinity fluorescent electrophoresis (IAFE)‐based interactome mapping, post‐translational modification analysis, reactive oxygen species measurements, and drought phenotyping, we dissected the regulatory mechanism underlying BpERF3‐mediated stress adaptation. </jats:list-item> <jats:list-item> We show that BpERF3 activates the peroxidase ( <jats:italic>POD</jats:italic> ) genes <jats:italic>BpPOD3</jats:italic> and <jats:italic>BpPOD4</jats:italic> , which are required for its drought‐protective function. Mechanistically, BpSRK1 phosphorylates BpERF3 at Ser355, enabling phosphorylated BpERF3 to competitively engage the HDAC domain of BpHDA6 and restrict BpHDA6‐dependent histone H3.1 deacetylation. Consequently, H3.1 acetylation is maintained, chromatin relaxes, downstream stress‐responsive genes are activated, and drought tolerance is enhanced in birch. </jats:list-item> <jats:list-item> Our findings reveal a BpSRK1‐BpERF3‐BpHDA6‐H3.1 regulatory module that links drought‐induced phosphorylation to local chromatin activation and redox homeostasis, providing mechanistic insight into plant stress adaptation. </jats:list-item> </jats:list>","PeriodicalId":214,"journal":{"name":"New Phytologist","volume":"1 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2026-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149086814","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":"Disrupting two Arabidopsis thaliana xylosyltransferase genes results in plants deficient in thermomorphogenesis","authors":"Yue Liu, Jie Wang, MeLongying Wangzha, Baoguo Wu, Qianwen Zhang, Chunli Zhang, Yujie Wu, Yizhuo Mu, Keyan Zhang, Junhong Zhang, Zhaojun Liu, Sridevi Sureshkumar, Yubao Lv, Yumeng Yang, Li Lin, Sureshkumar Balasubramanian, Chaowen Xiao, Baocai Zhang, Ruohe Yin","doi":"10.1111/nph.71616","DOIUrl":"https://doi.org/10.1111/nph.71616","url":null,"abstract":"Summary <jats:list list-type=\"bullet\"> <jats:list-item> Several cell‐wall‐modifying enzymes have been implicated in hypocotyl elongation; however, whether cell wall biosynthesis enzymes contribute to this process, particularly under warm temperature, remains largely unknown. </jats:list-item> <jats:list-item> In <jats:italic>Arabidopsis</jats:italic> , xyloglucan is a major component of the primary cell wall. Xyloglucan xylosyltransferase 1 (XXT1) and XXT2 are the major enzymes required for xyloglucan biosynthesis. Here, we investigated the roles of XXT1/2 in hypocotyl elongation with a focus under warm temperature using genetic, molecular, and transcriptomic approaches. </jats:list-item> <jats:list-item> We show that XXT1/2 are required for warm‐temperature‐promoted hypocotyl elongation and that the elongation phenotypes of PHYTOCHROME‐INTERACTING FACTOR 4 ( <jats:italic>PIF4</jats:italic> ) overexpression, Phytochrome B ( <jats:italic>phyB</jats:italic> ), and ELONGATED HYPOCOTYL 5 ( <jats:italic>hy5</jats:italic> ) depend partly on XXT1/2. PIF4 directly binds to and activates the promoters of <jats:italic>XXT1</jats:italic> and <jats:italic>XXT2</jats:italic> , whereas HY5 binds to the same promoter regions and represses their expression. Importantly, the warm‐temperature‐induced increase in xyloglucan content is antagonistically regulated by PIF4 and HY5. Transcriptomic analyses identified warm‐responsive genes whose induction depends on XXT1/2, including <jats:italic>expansins</jats:italic> ( <jats:italic>EXPs</jats:italic> ) and <jats:italic>xyloglucan endotransglucosylase/hydrolases</jats:italic> ( <jats:italic>XTHs</jats:italic> ). Mutants of some <jats:italic>EXPs</jats:italic> and <jats:italic>XTHs</jats:italic> showed compromised warm‐induced hypocotyl elongation. </jats:list-item> <jats:list-item> Together, our findings identify XXT1/2 as new components of the phyB–PIF4–HY5 growth network, linking environmental signaling to the cell wall biosynthetic machinery required for hypocotyl elongation. </jats:list-item> </jats:list>","PeriodicalId":214,"journal":{"name":"New Phytologist","volume":"3 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2026-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149086835","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":"Pedal control for petal growth: hormonal regulation of expansion kinetics","authors":"Yiru Xu,&nbsp;Lilan Hong","doi":"10.1111/nph.71437","DOIUrl":"10.1111/nph.71437","url":null,"abstract":"&lt;p&gt;The study unveils a phosphorylation-based ‘speed governor’ that restrains BR-induced rapid cell expansion in rose petals. Using their growth-kinetic analysis system, the authors identify an ethylene–MAPK–BZR1 module that links hormonal crosstalk with the kinetic control of cell expansion. RhBZR1 promotes petal enlargement by accelerating cell expansion, whereas ethylene activates the mitogen-activated protein kinase RhMPK7. RhMPK7 phosphorylates RhBZR1 and suppresses its DNA-binding and transcriptional activities toward expansion-related genes. Thus, ethylene is positioned not simply as a general inhibitor of petal growth, but as a targeted brake on BR-driven expansion. Taken together, this work shows how antagonistic hormonal inputs can be translated into a defined molecular module that shapes petal growth, with potential implications for improving ornamental traits in economically important horticultural crops.&lt;/p&gt;&lt;p&gt;This work builds on extensive studies of BR and ethylene signaling and provides an important mechanistic advance in understanding how these two hormonal pathways are integrated. In the well-established BR pathway, BRI1-mediated perception initiates a phosphorylation cascade that ultimately regulates the activity of the central transcription factors BZR1 and BES1. These transcription factors control large sets of downstream genes, thereby translating BR signaling into growth-promoting transcriptional outputs (Nolan &lt;i&gt;et al&lt;/i&gt;., &lt;span&gt;2020&lt;/span&gt;). In parallel, ethylene regulates many aspects of vegetative and reproductive development, often through tissue-specific mechanisms and through interactions with auxin, gibberellin, BR, and environmental signaling pathways (Van de Poel &lt;i&gt;et al&lt;/i&gt;., &lt;span&gt;2015&lt;/span&gt;; Vaseva &lt;i&gt;et al&lt;/i&gt;., &lt;span&gt;2018&lt;/span&gt;). More recent studies have identified direct molecular links between BR and ethylene signaling, including the BZR1–EIN3 interaction and the BR-mediated amplification of ethylene responses through the EBF–EIN3/PIF3 circuit (Zhao &lt;i&gt;et al&lt;/i&gt;., &lt;span&gt;2021&lt;/span&gt;; Wang &lt;i&gt;et al&lt;/i&gt;., &lt;span&gt;2023&lt;/span&gt;). However, whether ethylene-responsive signaling can converge on core BR transcriptional regulators through direct post-translational modification has remained less clear. Wang &lt;i&gt;et al&lt;/i&gt;. (&lt;span&gt;2026&lt;/span&gt;) address this gap by identifying RhMPK7-mediated phosphorylation of RhBZR1 as an essential step in ethylene-mediated suppression of BR-driven petal expansion. This finding adds a post-translational layer to BR–ethylene crosstalk and extends BR–ethylene research from model plant seedlings to a woody ornamental floral organ.&lt;/p&gt;&lt;p&gt;Building on this mechanistic insight, the study further provides a conceptual framework for understanding the context dependency of BR–ethylene interactions. The relationship between these two hormones is not fixed but can shift between synergistic and antagonistic modes according to tissue identity, developmental stage, and signaling status. Wang &lt;i&gt;et al&lt;/","PeriodicalId":214,"journal":{"name":"New Phytologist","volume":"252 3","pages":"970-972"},"PeriodicalIF":8.7,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/nph.71437","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148428784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Jun Yuan (袁军)","authors":"","doi":"10.1111/nph.70755","DOIUrl":"10.1111/nph.70755","url":null,"abstract":"<p>Jun Yuan, Nanjing Agricultural University (China).\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":214,"journal":{"name":"New Phytologist","volume":"252 3","pages":"1010-1012"},"PeriodicalIF":8.7,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/nph.70755","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145567839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nitric oxide promotes nitrile-containing pesticide degradation through S-nitrosylation of nitrilase in Solanum lycopersicum","authors":"Xin Hou,&nbsp;Hui Li,&nbsp;Dan Zhao,&nbsp;Biao Gong","doi":"10.1111/nph.71482","DOIUrl":"10.1111/nph.71482","url":null,"abstract":"&lt;p&gt;By 2050, the global population is projected to reach 9.7 billion, necessitating intensive agriculture. Pesticides are central to this system for pest, disease, and weed control. However, of the 3.6 billion kilograms used annually, only &lt;i&gt;c&lt;/i&gt;. 0.1% reaches its targets; over 99.9% disperses into the environment. These residues accumulate in crops, soil, and water, threatening human health via the food chain. Moreover, the co-occurrence of multiple pests drives up application frequency and dosage, often causing phytotoxicity due to overuse in crops. To cope with organic pollutants, organisms have evolved a ‘metabolic conversion’ detoxification mechanism. This process typically involves: structural modification of toxic compounds via reactions like oxidation; enhancement of water solubility through glycosylation or glutathione conjugation; and sequestration of metabolites into vacuoles or the apoplast by transport proteins for further breakdown (Yan &lt;i&gt;et al&lt;/i&gt;., &lt;span&gt;2019&lt;/span&gt;). Key enzymes, including cytochrome P450 monooxygenases, glycosyltransferases, and ABC transporters, mediate these steps. Signaling molecules such as brassinosteroids, nitric oxide (NO), and melatonin are known to regulate this detoxification pathway and promote pesticide degradation (Xia &lt;i&gt;et al&lt;/i&gt;., &lt;span&gt;2009&lt;/span&gt;; Yin &lt;i&gt;et al&lt;/i&gt;., &lt;span&gt;2016&lt;/span&gt;; Yan &lt;i&gt;et al&lt;/i&gt;., &lt;span&gt;2019&lt;/span&gt;), yet their precise molecular mechanisms remain unclear. Elucidating how these signals regulate pesticide degradation in crops could enable the biotechnological development of low-residue crop varieties and provide a theoretical basis for using exogenous regulators to mitigate pesticide residues and phytotoxicity.&lt;/p&gt;&lt;p&gt;The neonicotinoid insecticide acetamiprid (ACE) is widely used but poses ecological risks due to its toxicity and persistence. Using the vegetable crop tomato (&lt;i&gt;Solanum lycopersicum&lt;/i&gt;) as a model, we found that root NO accumulation was rapidly induced within 12 h of treatment with 1 mM ACE by two kinds of different NO probes (Fig. 1a,b). By employing 10 μM 2-(4-carboxyphenyl)-4,4,5,5-tetramethylimi-dadazoline-1-oxy-3-oxide (cPTIO, NO scavenger), we confirmed that ACE-induced NO is specific (Fig. 1b), suggesting a role of ACE in stress signaling. &lt;i&gt;In planta&lt;/i&gt; contents of ACE showed that treatment with 10 μM sodium nitroprusside (SNP, NO donor) significantly accelerated ACE degradation in tomato seedlings (Fig. 1c). Further experiments using 10 μM &lt;i&gt;S&lt;/i&gt;-nitrosoglutathione (GSNO, NO donor), 10 μM cPTIO, or both confirmed that exogenous NO indeed promotes ACE degradation (Fig. 1d). GSNO reductase (GSNOR), a metabolic enzyme of GSNO, negatively regulates NO levels in tomato (Wei &lt;i&gt;et al&lt;/i&gt;., &lt;span&gt;2025&lt;/span&gt;). We have established that &lt;i&gt;GSNOR&lt;/i&gt;-overexpressing (GSNOR-OE) lines have reduced NO content and &lt;i&gt;GSNOR&lt;/i&gt;-RNA interference (GSNOR-RNAi) lines with elevated NO accumulation (Wei &lt;i&gt;et al&lt;/i&gt;., &lt;span&gt;2025&lt;/span&gt;). Compared with the wild-type ","PeriodicalId":214,"journal":{"name":"New Phytologist","volume":"252 3","pages":"981-987"},"PeriodicalIF":8.7,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/nph.71482","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148622186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Towards a clearer understanding of evolution of angiosperm dispersal: classical syndromes are subjective and should not be confused with mechanisms","authors":"Pawel Wasowicz,&nbsp;Andy J. Green","doi":"10.1111/nph.71512","DOIUrl":"10.1111/nph.71512","url":null,"abstract":"&lt;p&gt;Jin &lt;i&gt;et al&lt;/i&gt;. (&lt;span&gt;2026&lt;/span&gt;) present and analyse a large compilation of ‘seed dispersal modes’ for global angiosperms and interpret the patterns as the macroevolution and global geography of biotic and abiotic dispersal mechanisms, with a strong emphasis on long-distance dispersal (LDD) (Jin &lt;i&gt;et al&lt;/i&gt;., &lt;span&gt;2026&lt;/span&gt;). However, the response variable used in their modelling is more heterogeneous than the mechanistic interpretations placed upon it allow. A single ‘dispersal mode’ is assigned to each species, with four options: zoochory, anemochory, hydrochory or autochory. Jin &lt;i&gt;et al&lt;/i&gt;. rightly recognise the central importance of LDD in angiosperm evolution, and use their category ‘autochory’ to represent short-distance dispersal (SDD). Yet, their database is a heterogeneous compilation from various studies by different authors using different labels and criteria to place plant species into categories associated with seed dispersal (e.g. for European species, BioPop, LEDA, EuDiS and Lososová &lt;i&gt;et al&lt;/i&gt;., &lt;span&gt;2023&lt;/span&gt; are all used as sources).&lt;/p&gt;&lt;p&gt;The different authors of these varied sources apply different thresholds, trait logic, and degrees of expert judgement. As a result, they often place a plant species into completely different dispersal categories. For example, EuDiS assigns ‘dispersal syndromes’ based on diaspore inspection, and the presence/absence of diagnostic traits (e.g. ‘endozoochory syndrome’ exclusively for a fleshy fruit, Vargas &lt;i&gt;et al&lt;/i&gt;., &lt;span&gt;2023&lt;/span&gt;). By contrast, BioPop uses different traits and gives more weight to empirical observations of dispersal to assign ‘dispersal modes’ (e.g. dry-fruited plants given an abiotic syndrome by other authors, but known to be dispersed by endozoochory, are labelled as ‘endozoochory’, Poschlod &lt;i&gt;et al&lt;/i&gt;., &lt;span&gt;2003&lt;/span&gt;).&lt;/p&gt;&lt;p&gt;A consequence of combining these sources without explicit harmonisation is that the resulting dataset contains inconsistencies that in our view affect interpretation. For example, they assign &lt;i&gt;Juncus bufonius&lt;/i&gt; to endozoochory mode (from BioPop) and &lt;i&gt;J. hybridus&lt;/i&gt; to autochory (from Lososová &lt;i&gt;et al&lt;/i&gt;., &lt;span&gt;2023&lt;/span&gt;), when these two taxa grow together, are morphologically indistinguishable, and can only be separated based on ploidy level (Williams-Marland &lt;i&gt;et al&lt;/i&gt;., &lt;span&gt;2026&lt;/span&gt;). Recently, for the flora of Surtsey, an island that emerged from the ocean in 1963, Wasowicz &lt;i&gt;et al&lt;/i&gt;. (&lt;span&gt;2025&lt;/span&gt;) demonstrated how EuDiS, Lososová &lt;i&gt;et al&lt;/i&gt;. (&lt;span&gt;2023&lt;/span&gt;) and a third classification system (Baseflor) assign different syndromes to the same plant taxa, and how all three systems fail to account for the LDD events required for colonisation. Hence, a global synthesis that merges such classifications into one dataset (Jin &lt;i&gt;et al&lt;/i&gt;., &lt;span&gt;2026&lt;/span&gt;) is not analysing a single coherent ‘dispersal mode’, but a mixture of subjective coding traditions.&lt;/p&gt;&lt;p&gt;Two related but distinct issue","PeriodicalId":214,"journal":{"name":"New Phytologist","volume":"252 3","pages":"997-1000"},"PeriodicalIF":8.7,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/nph.71512","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148833788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Instant generation of four-parent-derived autotetraploid rice through an in vitro fertilisation system","authors":"Kazuma Sakoda,&nbsp;Yukinosuke Ohnishi,&nbsp;Aya Satoh,&nbsp;Ken Okamoto,&nbsp;Takashi Okamoto","doi":"10.1111/nph.71493","DOIUrl":"10.1111/nph.71493","url":null,"abstract":"<p>Conventional breeding approaches aimed at crop improvement have been based on hybridisation through crosses between two parental lines or autopolyploidisation through genome duplication in a single parental line. These restrict the number and combination of parental genomes that can be combined in a single generation and are rarely co-applicable. This study demonstrated that <i>in vitro</i> fertilisation (IVF)-based autopolyploidisation using multiple parents is a viable approach that can combine the advantages of hybridisation and polyploidy in rice.\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":214,"journal":{"name":"New Phytologist","volume":"252 3","pages":"988-996"},"PeriodicalIF":8.7,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/nph.71493","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148767561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Elevated CO2 increases C allocation to CaCO3 mineralization relative to net organic C fixation in Ceratostigma willmottianum","authors":"Long Guo,&nbsp;Cailei Liu,&nbsp;Ting Lei,&nbsp;Jiani Li,&nbsp;Maoqiang Ye,&nbsp;Hanbing Cai,&nbsp;Suping Gao","doi":"10.1111/nph.71541","DOIUrl":"10.1111/nph.71541","url":null,"abstract":"<div>\u0000 \u0000 <p>\u0000 </p><ul>\u0000 \u0000 <li><i>Ceratostigma willmottianum</i>, which can mineralize atmospheric CO₂ directly into CaCO₃ for long-lasting C sequestration, has both organic and inorganic C sequestration functions. However, how elevated CO₂ affects CaCO₃ mineralization and the allocation of C between the two C sequestration remains unclear.</li>\u0000 \u0000 <li>Therefore, <i>C. willmottianum</i> was exposed to five CO₂ concentrations (400, 550, 700, 850, and 1000 ppm) in combination with ¹³C isotope labeling, carbonic anhydrase (CA) inhibitor treatments, and transient overexpression assays to systematically investigate these effects.</li>\u0000 \u0000 <li>Results showed that 700 ppm CO₂ was the most effective in promoting plant growth, photosynthesis, and CaCO₃ accumulation, whereas 1000 ppm CO₂ exerted an inhibitory effect. ¹³C tracing revealed that elevated CO₂ increased C allocation to CaCO₃ mineralization from 3.03% (400 ppm) to 4.62% (700 ppm), while decreasing that to net organic C fixation from 63.40 to 60.51%. CA inhibitor experiments further indicated that extracellular CA plays a key role in promoting more C allocation to CaCO₃ mineralization. Gene expression and functional validation identified <i>CwβCA2</i> as a key gene responding to elevated CO₂ and promoting CaCO₃ mineralization.</li>\u0000 \u0000 <li>This study provides a theoretical basis and candidate gene resources for developing biomineralization-based C capture and storage technologies to cope with rising CO₂ in the future.</li>\u0000 </ul>\u0000 </div>","PeriodicalId":214,"journal":{"name":"New Phytologist","volume":"252 3","pages":"1096-1111"},"PeriodicalIF":8.7,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148842980","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 case for an epiphyte area index","authors":"Collin Wischmeyer,&nbsp;Sybil G. Gotsch,&nbsp;Philipp Porada,&nbsp;John T. Van Stan II","doi":"10.1111/nph.71435","DOIUrl":"10.1111/nph.71435","url":null,"abstract":"<p>Three distinct ecosystems where epiphytes contribute a substantial vegetative area in the canopy.\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":214,"journal":{"name":"New Phytologist","volume":"252 3","pages":"973-980"},"PeriodicalIF":8.7,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/nph.71435","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148552523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}