Plant Physiology and Biochemistry最新文献

{"title":"Distinct non-photochemical quenching characteristics under constant and fluctuating light conditions: comparison between local and imported tobacco varieties","authors":"Hui Lyu ,&nbsp;Zhaoqi Tang ,&nbsp;Weijie Xu ,&nbsp;Dejun Kong ,&nbsp;Zhihong Wang ,&nbsp;Zhixiao Yang ,&nbsp;Jishun Zhang ,&nbsp;Hongqi Wu ,&nbsp;Zili Wang ,&nbsp;Dušan Lazár ,&nbsp;Yingchao Lin","doi":"10.1016/j.plaphy.2025.110239","DOIUrl":"10.1016/j.plaphy.2025.110239","url":null,"abstract":"<div><div>To explore the variation in adaptability to fluctuating light environments, the non-photochemical quenching (NPQ) characteristics of a local tobacco variety Xiaofeng 8 and a foreign introduced variety K326, under both constant and fluctuating light conditions were examined. The field experiment demonstrated that Xiaofeng 8 exhibited significantly stronger growth compared to K326, with the dry weight per plant and leaf area of Xiaofeng 8 increased by 28.26 % and 32.85 % compared with those of K326, respectively. Further, a distinct activation pattern of NPQ was detected in both varieties during the transition from dark to high light. Building on this finding, our subsequent tests proved that, in the high light intensity segments of a fluctuating light environment, Xiaofeng 8 exhibited a higher NPQ value compared to K326, indicating an enhanced capacity for dissipating excess light energy as thermal energy and mitigating the potential risk of photodamage. Subsequent analysis of the contents of violaxanthin (V), antheraxanthin (A), and zeaxanthin (Z) within the two varieties after high - light treatment has proved that Xiaofeng 8 has a superior ability to dissipate excess absorbed light energy under high - light conditions. This ability may contribute to its better growth under fluctuating light environments. Mutants defective in violaxanthin de-epoxidase (VDE) and zeaxanthin epoxidase (ZEP) were employed to examine their involvement in regulating plants growth under fluctuating light condition. The results showed that defects in these enzymes affected the NPQ response and reduced the growth rate of the mutants under fluctuating light conditions, suggesting its pivotal role of xanthophyll in regulating plant growth and adaptation to variable light environments. Collectively, these findings emphasize the importance of exploring genetic resources improving plant NPQ under fluctuating light conditions from both domestic and imported varieties, thereby providing promising targets for selecting and breeding new crop varieties with improved yield.</div></div>","PeriodicalId":20234,"journal":{"name":"Plant Physiology and Biochemistry","volume":"228 ","pages":"Article 110239"},"PeriodicalIF":6.1,"publicationDate":"2025-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144665453","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":"Variability and spatial distribution of ALS-inhibitor resistance mechanisms in Brazilian Echinochloa crus-galli","authors":"Eduardo Carlos Rudell ,&nbsp;Luan Cutti ,&nbsp;Guilherme Menegol Turra ,&nbsp;Paula Sinigaglia Angonese ,&nbsp;Vinicius Ferrari Tasca ,&nbsp;Othon Dias dos Santos ,&nbsp;Eric Patterson ,&nbsp;Aldo Merotto","doi":"10.1016/j.plaphy.2025.110237","DOIUrl":"10.1016/j.plaphy.2025.110237","url":null,"abstract":"<div><div>Barnyardgrass (<em>Echinochloa crus-galli</em> (L.) P. Beauv.) is a hexaploid weed, commonly found in rice fields. The field-level frequencies of the herbicide resistance mechanisms present in barnyardgrass remain unknown. This study developed and compared molecular marker assays for detecting mutations in the <em>ALS</em> genes, analyzing their frequency and spatial distribution in Southern Brazil rice fields. The <em>ALS</em> gene of 52 accessions was sequenced to identify mutations associated with resistance. Single Nucleotide-Amplified Polymorphism (SNAP) and PCR Allele Competitive Extension (PACE®) markers were developed for detecting ALS mutations: A122T, A205N, W574L, and S653N. A total of 233 accessions that survived imidazolinone application were collected. A greenhouse assay identified 195 and 84 accessions resistant to imazapyr + imazapic and penoxsulam, respectively. Molecular assays detected 188 resistant accessions, with W574L, S653N, A122T, and A205N mutations present in 43 %, 29 %, 17 %, and 5 % of resistant samples, respectively. 6 % of accessions carried mutations in two positions, while six resistant accessions lacked any mutation. Efficiency of SNAP and PACE methods was 90 % and 82 %, respectively. Discrepancies between methods were resolved using Nanopore sequencing. The detection threshold was one resistant per 25 susceptible DNA samples and one per 10 using leaf discs in SNAP. All mutations were distributed geographically, with the frequency of W574L increasing from 40 % in 2017/2018 to 47 % in the 2022/2023 season. ALS resistance was detected in 80 % of the accessions. Epidemiological studies, like this, that track resistance mechanisms, including the occurrence, distribution, and variability of mutations, are crucial for improving weed control recommendations.</div></div>","PeriodicalId":20234,"journal":{"name":"Plant Physiology and Biochemistry","volume":"228 ","pages":"Article 110237"},"PeriodicalIF":6.1,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144665452","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":"Functional divergence of growth-regulating factors CsGRF1 and CsGRF7 in Cucumis sativus defense against Podosphaera xanthii","authors":"Mengmeng Zhang ,&nbsp;Juyong Zhao ,&nbsp;Yongbo Yu ,&nbsp;Yang Yu ,&nbsp;Na Cui ,&nbsp;Xiangnan Meng ,&nbsp;Haiyan Fan","doi":"10.1016/j.plaphy.2025.110236","DOIUrl":"10.1016/j.plaphy.2025.110236","url":null,"abstract":"<div><div>As plant-specific transcription factors (TFs), growth-regulating factors (GRFs) play pivotal roles in regulating plant growth, development, and stress responses. Previous RNA-seq analysis revealed differential expression of <em>CsGRF1</em> and <em>CsGRF7</em> in cucumber under <em>Podosphaera xanthii</em> stress, suggesting their potential involvement in powdery mildew (PM) resistance. However, the functions and regulatory mechanisms of <em>CsGRF1</em> and <em>CsGRF7</em> in cucumber's defense remain unclear. In this study, we investigated the functional divergence of CsGRF1 and CsGRF7 in cucumber's PM defense. Subcellular localization, transcriptional activity, and protein interaction assays confirmed that both are typical members of the GRF TF family. Functional analyses demonstrated that <em>CsGRF1</em> positively regulates cucumber resistance to <em>P. xanthii</em>, whereas <em>CsGRF7</em> suppresses it. Further studies revealed that <em>CsGRF1</em> enhances disease resistance by maintaining reactive oxygen species (ROS) homeostasis, while CsGRF7 negatively regulates lignin biosynthesis by directly interacting with CsODO1 (an MYB TF that inhibits PM resistance), thereby reducing defense responses. This study elucidates distinct regulatory roles of <em>GRF</em> family members in PM resistance and provides a theoretical foundation for improving cucumber disease resistance.</div></div>","PeriodicalId":20234,"journal":{"name":"Plant Physiology and Biochemistry","volume":"228 ","pages":"Article 110236"},"PeriodicalIF":6.1,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144613968","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":"A novel glycerophosphodiester phosphodiesterase 13 is involved in the phosphate starvation-induced phospholipid degradation in rice","authors":"Duong Thi Thuy Dang ,&nbsp;Linh Thi Nguyen ,&nbsp;Anh-Tuan Tran ,&nbsp;Tam Thi Thanh Tran ,&nbsp;Tuan-Anh Tran ,&nbsp;Kieu Thi Xuan Vo ,&nbsp;Jong-Seong Jeon ,&nbsp;Tien Van Vu ,&nbsp;Jae-Yean Kim ,&nbsp;Nhue Phuong Nguyen ,&nbsp;Ha Hoang Chu ,&nbsp;Phat Tien Do ,&nbsp;Huong Thi Mai To","doi":"10.1016/j.plaphy.2025.110230","DOIUrl":"10.1016/j.plaphy.2025.110230","url":null,"abstract":"<div><div>Inorganic phosphate (Pi) is an essential macronutrient for plant growth and productivity. However, its limited bioavailability in soil poses a major constraint to crop performance. To cope with Pi deficiency, plants have evolved a wide range of physiological and biochemical strategies, including membrane lipid remodeling, to optimize Pi acquisition and internal recycling. In a previous genome-wide association study (GWAS) using Vietnamese rice germplasm, we identified a robust QTL, <em>qRST9.14</em>, associated with Pi efficiency. Notably, <em>OsGDPD13,</em> a gene encoding a glycerophosphodiester phosphodiesterase, is located within this QTL and is absent from the <em>indica</em> reference genome, highlighting potential genetic divergence between rice subspecies. Subcellular localization studies revealed that the OsGDPD13 protein is distributed across multiple cellular compartments, including the plasma membrane, cytoplasmic speckles, and plasmodesmata, suggesting multifunctional roles. To investigate the function of <em>OsGDPD13</em>, knockout mutants and overexpression lines were generated in the <em>japonica</em> cv. Kitaake background. Under Pi-deficient conditions, knockout lines showed impaired phospholipid (PL) degradation, particularly phosphatidylcholine (PC), while overexpression lines exhibited enhanced PC breakdown even under Pi sufficiency. These changes were accompanied by differential expressions of the Pi signaling gene <em>OsSPX1</em>, implicating <em>OsGDPD13</em> in Pi-responsive lipid remodeling and signaling. Promoter analysis further revealed multiple P1BS-like elements, suggesting regulation by MYB-CC transcription factors. These findings suggest <em>OsGDPD13</em> as a key component in the Pi deficiency response and possibly linking membrane lipid remodeling to phosphate homeostasis. This work offers new insights into <em>OsGDPD13</em> function and presents it as a promising genetic target for improving phosphorus use efficiency (PUE) in rice.</div></div>","PeriodicalId":20234,"journal":{"name":"Plant Physiology and Biochemistry","volume":"228 ","pages":"Article 110230"},"PeriodicalIF":6.1,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144614083","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":"Genome-wide identification of NTRs in peanut and functional profiling of AhNTR2-2 in response to salt and heat stress as a negative regulator","authors":"Xia Li ,&nbsp;Guijun Su ,&nbsp;Chunliu Pan ,&nbsp;Saba Hameed ,&nbsp;Jie Zhan ,&nbsp;Aiqin Wang ,&nbsp;Zhuqiang Han ,&nbsp;Dong Xiao ,&nbsp;Longfei He","doi":"10.1016/j.plaphy.2025.110232","DOIUrl":"10.1016/j.plaphy.2025.110232","url":null,"abstract":"<div><div>Peanut (<em>Arachis hypogaea</em>) is an important oil crop cultivated on a large scale throughout the world. However, the molecular mechanisms underlying peanut responses to stresses are largely unknown. NADPH-dependent thioredoxin reductases (NTRs) belong to a superfamily of flavoprotein disulfide oxidoreductases, with a variety of functions. In this study, a total of five NTR members were identified. On the basis of their phylogenetic relationships and gene structure, the <em>AhNTR</em> genes are classified into two categories: AhNTR2 (NTRA/B) and AhNTR3 (NTRC). Members within the same group had similar motif compositions and gene structure. The promoter sequences of <em>AhNTR</em> genes contain multiple cis-acting elements associated with stress response, phytohormone signal transduction and plant growth and development. <em>AhNTR2-2</em> is highly expressed in leaves and roots, with the greatest number of stress- and phytohormone-responsive cis-acting elements in the promoter, thus, it was selected for further research. Subcellular assays revealed that AhNTR2-2 is a mitochondrial protein that responds to NaCl stress. The overexpression of <em>AhNTR2-2</em> in Arabidopsis conferred sensitivity to NaCl and heat stresses via reducing antioxidant enzyme activities and ROS accumulation. AhNTR2-2 interacts with AhTRX h2. The effects of <em>AhTRX h2</em> overexpression in Arabidopsis were similar to those of stress. Furthermore, an interaction between AhTRX h2 and AhGSNOR1 was identified. AhNTR2-2 and AhTRX h2 constitute an S-nitrosylated NTR-TRX system in peanut. Our findings provide a foundation for a comprehensive analysis of the AhNTR family.</div></div>","PeriodicalId":20234,"journal":{"name":"Plant Physiology and Biochemistry","volume":"228 ","pages":"Article 110232"},"PeriodicalIF":6.1,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144654651","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":"Characterization of the JAZ family in Osmanthus fragrans and the role of OfLJAZ2 in flavonoid synthesis mediated regulation of salt and drought stress tolerance","authors":"Wenle Li ,&nbsp;Shumin Yu ,&nbsp;Kaimei Zhang ,&nbsp;Shunran Zhang ,&nbsp;Yan Xiang ,&nbsp;Yangang Lan","doi":"10.1016/j.plaphy.2025.110235","DOIUrl":"10.1016/j.plaphy.2025.110235","url":null,"abstract":"<div><div>As an important ornamental plant, the application of <em>Osmanthus fragrans</em> in landscape gardening is limited by abiotic stresses such as drought and salinity. JAZs, as key negative regulators in the jasmonic acid signaling pathway, play crucial roles in regulating stress responses in plants. However, the <em>JAZ</em> family in <em>O. fragrans</em> remains insufficiently characterized. Here, 75 <em>OfJAZ</em>s were identified in four <em>O. fragrans</em> cultivars (‘Liuyejingui’, ‘Yulianyinsi’, ‘Rixianggui’, and ‘Zhuangyuanhong’), and their phylogenetic relationships, gene structures, conserved motifs and cis-acting elements characteristics were systematically analyzed. Evolutionary analysis revealed that the <em>OfJAZ</em>s primarily expanded through whole-genome duplication events. Further functional studies demonstrated that overexpression of <em>OfLJAZ2</em> significantly inhibited flavonoid biosynthesis and reduced salt and drought stress tolerance in transgenic plants. Dual-LUC and EMSA assays revealed that OfLJAZ2 interacts with OfLMYB21 to form a transcriptional complex, which suppresses OfLMYB21 transcriptional activation of the flavonol synthase <em>OfFLS</em>, thereby reducing flavonoid accumulation. Conversely, overexpression of <em>OfLMYB21</em> increased salt and drought stress tolerance and promoted flavonoid biosynthesis in transgenic plants. This study provided the first genome-wide identification of <em>OfJAZ</em>s in different <em>O. fragrans</em> cultivars and preliminarily revealed the molecular mechanism by the key JAZ protein OfLJAZ2 regulated flavonoid metabolism to participate in salt and drought stress tolerance, which provided a theoretical basis for molecular breeding of stress resistance <em>O. fragrans</em> cultivars.</div></div>","PeriodicalId":20234,"journal":{"name":"Plant Physiology and Biochemistry","volume":"228 ","pages":"Article 110235"},"PeriodicalIF":6.1,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144632878","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":"PagBEH3b regulates water maintenance and reactive oxygen species scavenging to control poplar drought tolerance","authors":"Yu Guo ,&nbsp;Shuo Song ,&nbsp;YuanYuan Shang ,&nbsp;ZhaoYang Tian ,&nbsp;Yingxin Zhang ,&nbsp;Xiaoyu Li ,&nbsp;Yihao Ding ,&nbsp;Chaoxia Lu ,&nbsp;Yanqiu Zhao ,&nbsp;Hongxia Zhang ,&nbsp;Lizi Zhao","doi":"10.1016/j.plaphy.2025.110227","DOIUrl":"10.1016/j.plaphy.2025.110227","url":null,"abstract":"<div><div>The BES/BZR transcription factor BEH3 protein is important for regulating and stabilizing vascular tissue development in <em>Arabidopsis</em>. However, the biological functions of poplar <em>BEH3</em> genes, the homologs of <em>AtBEH3</em> in poplar, remain unexplored. In this study, four <em>BEH3</em> genes from <em>Populus</em>, with <em>PagBEH3b</em> exhibiting the highest amino acid sequence similarity to <em>AtBEH3</em>, were identified. Expression analysis revealed that <em>PagBEH3b</em> was predominantly expressed, with the highest level observed in the roots than in those of the other members. Further analysis revealed that <em>PagBEH3b</em> was strongly induced by drought stress. Physiological analyses of <em>PagBEH3b</em> overexpression (<em>PagBEH3b</em> OE) and <em>PagBEH3b</em>-knockout (<em>Pagbeh3</em>) transgenic poplar plants revealed that <em>PagBEH3b</em> OE plants had a greater tolerance to drought stress, whereas <em>Pagbeh3</em> were more sensitive. The altered tolerance to drought stress was closely associated with increases or decreases in stomatal aperture, water use efficiency, antioxidant enzyme activities, and expression of antioxidant enzyme-encoding genes in <em>PagBEH3b</em> OE and <em>Pagbeh3</em> transgenic poplar plants. These results highlight the key role of <em>PagBEH3b</em> in drought stress responses and its promising potential for the breeding of new tree cultivars with increased tolerance to abiotic stress.</div></div>","PeriodicalId":20234,"journal":{"name":"Plant Physiology and Biochemistry","volume":"228 ","pages":"Article 110227"},"PeriodicalIF":6.1,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144614082","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":"Relationship between photosystem activity and ultraweak luminescence excitation in Cerasus humilis leaves under low light stress","authors":"Jingru Li ,&nbsp;Cong Sun ,&nbsp;Li Zhang ,&nbsp;Jinli Guo","doi":"10.1016/j.plaphy.2025.110218","DOIUrl":"10.1016/j.plaphy.2025.110218","url":null,"abstract":"<div><div>This study examines how low light stress affects photosystem (PS) activity and ultraweak luminescence (UWL) in <em>Cerasus humilis</em> (Bge) Sok (<em>C. humilis</em>) leaves, focusing on their interplay under varying light intensities. To clarify the impact patterns of low light stress on PS activity and UWL intensity in <em>C. humilis</em> leaves, and to elucidate the correlation between PS activity and UWL under varying light intensities. In this experiment, <em>C. humilis</em> potted seedlings were used as materials. Light treatments with different shading levels were applied, including mild low light stress (L1, 85 % shading) and severe low light stress (L2, 96 % shading). PS activity in leaves and UWL intensity were determined. The variation patterns and correlations between PS activity and UWL intensity were analyzed. Results showed: PS Activity: L1 reduced energy utilization efficiency but not PS activity; L2 significantly suppressed PS activity, disrupted thylakoid membranes, lowered PS II efficiency, and impeded electron transport. UWL Intensity: Both treatments reduced UWL, with L1 causing a slight decline and L2 a drastic reduction. Correlation: UWL intensity positively correlated with PS activity parameters, including PS II quantum yield, photosynthetic performance indices, and energy transfer efficiency. The PS activity in <em>C. humilis</em> leaves is closely associated with UWL generation, with UWL intensity decreasing as PS activity declines. While L2 treatment significantly weakened UWL by suppressing PS activity and PS II photochemical reactions, L1 had negligible effects on both parameters. This finding provides new insights into plant photostress response mechanisms and the physiological significance of UWL.</div></div>","PeriodicalId":20234,"journal":{"name":"Plant Physiology and Biochemistry","volume":"228 ","pages":"Article 110218"},"PeriodicalIF":6.1,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144614084","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":"Physio-biochemical response of vegetable seeds to ageing: A systematic review","authors":"Jonas Nickas ,&nbsp;Sognigbé N'Danikou ,&nbsp;Abdul J. Shango ,&nbsp;Newton Kilasi","doi":"10.1016/j.plaphy.2025.110223","DOIUrl":"10.1016/j.plaphy.2025.110223","url":null,"abstract":"<div><div>Seed viability is an important quality parameter for seed longevity and crop productivity. Therefore, a thorough monitoring of significant viability markers during storage is important in anticipating seed longevity. This review looked at potential physio-biochemical responses of seed to ageing as markers for seed viability in vegetable crops. The quantitative analysis of metadata gathered from the literature revealed a decrease in antioxidant activities, except for dehydroascorbate reductase and peroxidase activities during seed ageing. However, degradation of stored substrates increased with increased seed age. Seed priming in vegetables could be used to restore viability in aged seeds by restoring antioxidant activity. The study presented the most common physio-biochemical changes that are related with the decline of seed viability during vegetable seed ageing. This information can be utilized to improve seed quality and ultimately enhance viability of vegetable seed collections during storage.</div></div>","PeriodicalId":20234,"journal":{"name":"Plant Physiology and Biochemistry","volume":"228 ","pages":"Article 110223"},"PeriodicalIF":6.1,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144632879","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":"Induced photosynthesis significantly influences biomass in Betula platyphylla seedlings compared to steady-state photosynthesis under different nitrogen forms","authors":"Tingting Li ,&nbsp;Liu Yang ,&nbsp;Dehai Zhao ,&nbsp;Te Li ,&nbsp;Yuhan Liu ,&nbsp;Xiuwei Wang","doi":"10.1016/j.plaphy.2025.110225","DOIUrl":"10.1016/j.plaphy.2025.110225","url":null,"abstract":"<div><div>Nitrogen is essential for plant growth and photosynthesis, but its effects under steady-state and fluctuating light conditions remain unclear. <em>Betula platyphylla</em> seedlings were used to study the impact of two inorganic (nitrate and ammonium and one organic (mixed amino acids) nitrogen forms. Compared to the control treatment, addition of organic and nitrate nitrogen increased the maximum steady-state photosynthetic rate by 64.99 % and 45.72 %, respectively, while ammonium nitrogen treatment boosted the maximum induced photosynthetic rate by 100.94 %. Total biomass increased by 21.05 % and 16.85 % under nitrate and ammonium treatments, respectively. Stomatal morphology was identified as a key driver of biomass variation, explaining 56.82 % of the variance. Fluctuating light conditions significantly affected biomass production under different nitrogen forms, emphasizing the importance of optimizing nitrogen management.</div></div>","PeriodicalId":20234,"journal":{"name":"Plant Physiology and Biochemistry","volume":"228 ","pages":"Article 110225"},"PeriodicalIF":6.1,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144604250","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}