Plant, Cell & Environment最新文献

Sensory Perception of Fluctuating Light in Arabidopsis. 拟南芥波动光的感觉知觉。

IF 6 1区生物学

Plant, Cell & Environment Pub Date : 2025-05-27 DOI: 10.1111/pce.15633

Antonela Belmonte, Nicolas Tissot, Andrés Rabinovich, Edmundo L Ploschuk, Carlos D Crocco, Roman Ulm, Jorge J Casal

{"title":"Sensory Perception of Fluctuating Light in Arabidopsis.","authors":"Antonela Belmonte, Nicolas Tissot, Andrés Rabinovich, Edmundo L Ploschuk, Carlos D Crocco, Roman Ulm, Jorge J Casal","doi":"10.1111/pce.15633","DOIUrl":"https://doi.org/10.1111/pce.15633","url":null,"abstract":"When exposed to shade from neighbours, competitive plants modify their growth patterns to improve access to light. In dense plant stands, ranging from forests to humid grasslands and crops, shade is interrupted by sunflecks penetrating the canopy. Relatively infrequent, minute-scale interruptions can significantly contribute to the daily light input. However, given the short duration and the time gap between these low frequency sunflecks (LFS), whether plants can sense them was unknown. Here, we demonstrate that phytochrome B (phyB), cryptochrome 1 (cry1), cry2 and UV RESISTANCE LOCUS 8 (UVR8) cooperatively perceive LFS to reduce hypocotyl growth in Arabidopsis thaliana. LFS also enhanced the expression of photosynthetic and photo-protective genes and initiated pre-emptive acclimation to water restriction. Repeated LFS increased the nuclear abundance of cry1 and UVR8. This positive feedback enhanced the sensitivity to subsequent LFS and even to the shade between LFS. LFS reduced the nuclear abundance of the growth regulator PHYTOCHROME INTERACTING FACTOR 4 (PIF4), which only slowly recovered upon return to shade, further amplifying the signal. Our findings unveil hitherto uncharacterised dynamics of cry1, UVR8 and PIF4 under fluctuating light. This photosensory system helps adjust plants to the prevailing environmental conditions.","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144148773","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}

引用次数: 0

MtPEPC2 Encodes a Phosphoenolpyruvate Carboxylase Essential for Symbiotic Nitrogen Fixation in Medicago truncatula. MtPEPC2编码一种磷酸烯醇丙酮酸羧化酶，该酶是短叶苜蓿共生固氮所必需的。

IF 6 1区生物学

Plant, Cell & Environment Pub Date : 2025-05-27 DOI: 10.1111/pce.15636

Yitong Shen, Juanxia He, Yelin Ma, Xiaopan Song, Peng Li, Chenyan Zhang, Zaicai Zhou, Rujin Chen

{"title":"MtPEPC2 Encodes a Phosphoenolpyruvate Carboxylase Essential for Symbiotic Nitrogen Fixation in Medicago truncatula.","authors":"Yitong Shen, Juanxia He, Yelin Ma, Xiaopan Song, Peng Li, Chenyan Zhang, Zaicai Zhou, Rujin Chen","doi":"10.1111/pce.15636","DOIUrl":"https://doi.org/10.1111/pce.15636","url":null,"abstract":"Symbiotic nitrogen fixation (SNF) that takes place in root nodules of legumes essentially relies on the exchange of nitrogen (N) and carbon (C) metabolites between the symbiotic partners. The endosymbionts rhizobia provide ammonium to the host plants, and in return receive carbon and energy sources from the host for nitrogen fixation. In a forward genetic study, we identified FN6516 as an SNF-defective (fix-) mutant of Medicago truncatula. Whole genome resequencing, genetic linkage analysis of an F2 segregating population, genetic complementation and gene editing results show that a plant-type PEPC, MtPEPC2, is the candidate gene. We demonstrate that MtPEPC2 expression is activated in nodules and that a high level of expression is detected at an early stage of nodule development. MtPEPC2 protein is localised in the cytoplasm of both infected and uninfected cells, but not in symbiosomes. Our work shows that a nonsense mutation in MtPEPC2 resulted in a great reduction in PEPC activities, almost complete loss of nodule nitrogen fixation activities, and defects in differentiation and/or maintenance of bacteroids. Importantly, overexpression of MtPEPC2 increased nodule nitrogenase activities.","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144148770","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}

引用次数: 0

The Effect of Plant Host Density on Disease Incidence-A Meta-Analysis. 植物寄主密度对病害发病率的影响——meta分析。

IF 6 1区生物学

Plant, Cell & Environment Pub Date : 2025-05-27 DOI: 10.1111/pce.15634

Jacob C Douma, Rens Noordhoek

{"title":"The Effect of Plant Host Density on Disease Incidence-A Meta-Analysis.","authors":"Jacob C Douma, Rens Noordhoek","doi":"10.1111/pce.15634","DOIUrl":"https://doi.org/10.1111/pce.15634","url":null,"abstract":"Plant spacing plays a crucial role in determining the degree of interaction between them. It changes plant physiological processes, plant architecture, microclimate in the canopy and the dispersal and growth of pests and pathogens. This study aims to quantify the relationship between planting density and disease incidence across studies. A meta-analysis was conducted to analyse the relationship between disease incidence and planting density, synthesising 44 publications consisting of 191 experiments, with in total 531 data disease incidence observations, based on > 500 000 sampling units. Four statistical models reflecting different hypotheses on how planting density affects disease incidence were developed and tested in a Bayesian framework. For viruses, disease incidence roughly decreased by a half when doubling planting density, while for fungi no relationship with planting density was observed, regardless of the feeding style or dispersal mode of the fungus, or whether the disease was monocyclic or polycyclic. The negative relationship for virus incidence and planting density and the absence of this relationship in fungi is presumably related to the dispersal mode of the pathogen: active dispersal of viruses by vectors while fungi are generally dispersed passively by water or wind. Implications for ecology and agronomy are discussed.","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144148878","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}

引用次数: 0

Laminaria digitata Extract Improved Leaf Meristem Protection Under Drought and Nitrogen Uptake After Rehydration Through Hormesis-Based Chemical Priming in Lolium perenne. 海带提取物通过激效化学诱导提高了黑麦草叶片在干旱条件下的分生组织保护和复水后的氮吸收。

IF 6 1区生物学

Plant, Cell & Environment Pub Date : 2025-05-27 DOI: 10.1111/pce.15646

Antoine Grandin-Courbet, Annette Morvan-Bertrand, Marine Dehail, Franck Hennequart, Marie-Pascale Prud'homme

{"title":"Laminaria digitata Extract Improved Leaf Meristem Protection Under Drought and Nitrogen Uptake After Rehydration Through Hormesis-Based Chemical Priming in Lolium perenne.","authors":"Antoine Grandin-Courbet, Annette Morvan-Bertrand, Marine Dehail, Franck Hennequart, Marie-Pascale Prud'homme","doi":"10.1111/pce.15646","DOIUrl":"https://doi.org/10.1111/pce.15646","url":null,"abstract":"Drought is among the most damaging stress for plants, impacting crop yield and grassland sustainability. This study aimed to evaluate the biostimulant effect of an algal extract from Laminaria digitata on Lolium perenne cultivated in a growth chamber. Leaves were sprayed at different concentrations 7 days before stopping irrigation. This priming period was followed by fourteen days of drought and ten days of recovery. Algal extract supplied at 2 and 5 L.ha-1 stimulated nitrogen uptake during recovery, while higher doses were deleterious. During drought, algal extract 2 L.ha-1 increased water content in leaves and shoot 0-3 cm housing the leaf meristems. The improvement in water content arose from the smaller decline in leaf relative water content (RWC), suggesting better osmotic adjustment. Cell membrane stability was less impaired during drought and quickly returned to pre-drought levels during recovery, indicating better membrane protection. The higher fructan content may contribute to osmotic adjustment and membrane protection. The results show that algal extract improved leaf meristem protection under drought and N uptake after rehydration through hormesis-based chemical priming. The treatment limited sucrose accumulation during drought, so that sucrose content can be used as an indicator of biostimulation together with RWC and cell membrane stability.","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144148767","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}

引用次数: 0

Synergistic Optimisation of Root Hydraulic Architecture Enhances Drought Tolerance in Cotton. 棉花根系水工结构协同优化提高抗旱性。

IF 6 1区生物学

Plant, Cell & Environment Pub Date : 2025-05-27 DOI: 10.1111/pce.15640

Shuo Wang, Lingxiao Zhu, Peng Zhang, Xinyue Wang, Hongchun Sun, Ke Zhang, Yongjiang Zhang, Guiyan Wang, Ningxin Zhu, Zhiying Bai, Hezhong Dong, Cundong Li, Liantao Liu

{"title":"Synergistic Optimisation of Root Hydraulic Architecture Enhances Drought Tolerance in Cotton.","authors":"Shuo Wang, Lingxiao Zhu, Peng Zhang, Xinyue Wang, Hongchun Sun, Ke Zhang, Yongjiang Zhang, Guiyan Wang, Ningxin Zhu, Zhiying Bai, Hezhong Dong, Cundong Li, Liantao Liu","doi":"10.1111/pce.15640","DOIUrl":"https://doi.org/10.1111/pce.15640","url":null,"abstract":"Optimising the root hydraulic architecture, which is defined by the integration of morphological and hydraulic traits, plays a crucial role in enhancing the drought tolerance of crops. However, the mechanisms by which root hydraulic architecture coordinates structural and functional adaptations under drought remain unclear. In this study, we used paper-based cultured 13 cotton cultivars under no-stressed and drought-stressed conditions, and identified a drought-tolerant (Guoxin 02) and a drought-sensitive (Ji 228) cultivar. The drought-tolerant cultivar exhibited enhanced root hydraulic conductance (Lpr) through increased lateral root length and number, reduced lateral root tip angle, and lower root width/depth ratio. Anatomically, drought tolerance was associated with narrower xylem vessels to limit axial conductance (Kx) and reduced cortex cell layers to increase radial hydraulic conductance (Kox), thereby balancing hydraulic efficiency and embolism resistance. Despite lower Kx, the high root hydraulic conductance (Kroot) in the drought-tolerant cultivar was maintained by lateral root proliferation, demonstrating a synergistic interplay between morphology and hydraulics. These findings highlight the plasticity of root hydraulic architecture as a key target for breeding drought-resilient cotton.","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144148776","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}

引用次数: 0

Eukaryotic Centromere Remodeling: Plasticity, Dynamics, and Holocentromere Formation. 真核着丝粒重塑：可塑性、动力学和全新着丝粒形成。

IF 6 1区生物学

Plant, Cell & Environment Pub Date : 2025-05-27 DOI: 10.1111/pce.15652

Dan Yang, Zhaoxin Xiao, Ke Li, Jiayi Hou, Fengfeng Zhang, Jianjun Qiao, Ning Li, Mingzhang Wen

{"title":"Eukaryotic Centromere Remodeling: Plasticity, Dynamics, and Holocentromere Formation.","authors":"Dan Yang, Zhaoxin Xiao, Ke Li, Jiayi Hou, Fengfeng Zhang, Jianjun Qiao, Ning Li, Mingzhang Wen","doi":"10.1111/pce.15652","DOIUrl":"https://doi.org/10.1111/pce.15652","url":null,"abstract":"Eukaryotic centromeres highlight the remarkable plasticity of eukaryotic chromosomes through their conserved functionality and sequence divergence. Holocentric chromosomes, where centromere activity is distributed along the entire chromosome length, offer a unique model for investigating the molecular mechanisms underlying adaptive evolution between centromeres and chromosomes. In this review, we summarise and speculate on the multiple changes and prerequisites potentially involved in the evolution of holocentromeres. The interplay between environmental factors, chromosomal rearrangements, and centromere plasticity drives the transition from regional to holocentric characteristics. The centromeric histone H3 (CenH3) protein mediates neocentromere formation by recognising non-centromeric chromosomal regions with appropriate AT content, thereby facilitating chromosome restructuring in the transition from regional to holocentric chromosomes. Dynamic changes in repetitive sequences provide functional sites for centromere assembly, chromosomal recombination and repair and centromere spreading and maturation. Epigenetic modifications maintain functional coordination among multiple centromeric units by modulating chromatin states, CenH3 localisation, and kinetochore assembly. This review provides a comprehensive framework for understanding the evolutionary mechanisms of holocentromeres derived from monocentromere and offers insights into the design of artificial centromeres.","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144148831","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}

引用次数: 0

FieldDino: Rapid In-Field Stomatal Anatomy and Physiology Phenotyping. FieldDino：快速田间气孔解剖和生理表型。

IF 6 1区生物学

Plant, Cell & Environment Pub Date : 2025-05-27 DOI: 10.1111/pce.15639

Edward Chaplin, Guy Coleman, Andrew Merchant, William Salter

{"title":"FieldDino: Rapid In-Field Stomatal Anatomy and Physiology Phenotyping.","authors":"Edward Chaplin, Guy Coleman, Andrew Merchant, William Salter","doi":"10.1111/pce.15639","DOIUrl":"https://doi.org/10.1111/pce.15639","url":null,"abstract":"Stomatal anatomy and physiology define CO2 availability for photosynthesis and regulate plant water use. Despite being key drivers of yield and dynamic responsiveness to abiotic stresses, conventional measurement techniques of stomatal traits are laborious and slow, limiting adoption in plant breeding. Advances in instrumentation and data analyses present an opportunity to screen stomatal traits at scales relevant to plant breeding. We present a high-throughput robust field-based phenotyping approach, FieldDino, for screening stomatal physiology and anatomy. The method allows measurements to be collected in < 15 s and consists of: (1) stomatal conductance measurements using a handheld porometer; (2) in situ collection of epidermal images with a digital microscope, 3D-printed leaf clip and Python-based app; and (3) automated deep-learning analysis of stomatal features. The YOLOv8-M model trained on images collected in the field achieved strong performance metrics with an mAp@0.5 of 97.1% for stomatal detection. When validated in large field trials of 200 wheat genotypes under two irrigation treatments, FieldDino captured wide diversity in stomatal traits. FieldDino enables stomatal data collection and analysis at unprecedented scales in the field. This will advance research on stomatal biology and accelerate the incorporation of stomatal traits into plant breeding programs for resilience to abiotic stress.","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144148834","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}

引用次数: 0

Gα Protein Mediates High-Concentration CO₂-Induced Stomata Closure Through Interaction With Carbonic Anhydrase to Promote Guard Cell Hydrogen Peroxide Production in Arabidopsis. Gα蛋白通过与碳酸酐酶的相互作用介导高浓度co2诱导的气孔关闭，促进保护细胞过氧化氢的产生。

IF 6 1区生物学

Plant, Cell & Environment Pub Date : 2025-05-27 DOI: 10.1111/pce.15645

Chen-Xi Zhang, Xue Kang, Qun-Wei Bai, Jin-Xia Li, Ming-Tao Mu, Xiao-Yu Ma, Shu-Mei Hei

{"title":"Gα Protein Mediates High-Concentration CO2-Induced Stomata Closure Through Interaction With Carbonic Anhydrase to Promote Guard Cell Hydrogen Peroxide Production in Arabidopsis.","authors":"Chen-Xi Zhang, Xue Kang, Qun-Wei Bai, Jin-Xia Li, Ming-Tao Mu, Xiao-Yu Ma, Shu-Mei Hei","doi":"10.1111/pce.15645","DOIUrl":"https://doi.org/10.1111/pce.15645","url":null,"abstract":"Guard cells detecting fluctuations in ambient CO2 levels and modulating stomatal aperture constitute a crucial adaptive response to changes of atmospheric CO2 in plants. CO2 sensing in animals is closely related to G proteins. Nonetheless, the role of G proteins in high-concentration CO2-regulated stomatal movement in plants remains unclear. Using NaHCO3 as a CO2 source, the results of this study showed that NaHCO3-induced stomatal closure and guard cell hydrogen peroxide (H2O2) production in wild type plants were disrupted by Gα inhibitor pertussis toxin (PTX) and in mutants gpa1, cGα/DF, and wGα/DF but not in cGa and wGa lines. Furthermore, NaHCO3 upregulated the expression of GPA1 during the early phases of NaHCO3-induced stomatal closure. Additionally, Gα activator cholera toxin (CTX) failed to rescue NaHCO3-induced stomatal closure in wild type plants treated with carbonic anhydrase (CA) inhibitors EZ and AZ, as well as in ca1ca4 mutant. NaHCO3 also did not induce stomatal closure in cGα/ca1ca4 and wGα/ca1ca4 mutants. Notably, NaHCO3-increased CA enzymatic activity was abolished in wild type plants treated with PTX and in gpa1 mutant but remained unaffected in cGa and wGa lines. Moreover, LCI, Pull-down and Co-IP assays displayed that GPA1 interacts with CA1 and CA4. And, NaHCO3-induced guard cell H2O2 production impaired by ca1ca4, cGα/ca1ca4 and wGα/ca1ca4 mutants. These findings demonstrate that Gα subunit GPA1 mediates high-concentration CO2-induced stomatal closure by interaction with CA1 and CA4 to promote H2O2 accumulation in Arabidopsis guard cells. This insight advances our understanding of CO2-governing stomatal movement in plants.","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144148837","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}

引用次数: 0

Benzoxazinoid Induction and Secretion in Wheat by Intercropped Faba Bean: Cross-Plant Transfer, Environmental Degradation and Limited Negative Impact on Growth. 间作蚕豆诱导和分泌苯并恶嗪类药物：跨株转移、环境退化和对小麦生长的有限负面影响

IF 6 1区生物学

Plant, Cell & Environment Pub Date : 2025-05-27 DOI: 10.1111/pce.15642

Chaosheng Luo, Huiqiong Ding, Siyin Yang, Yan Dong

{"title":"Benzoxazinoid Induction and Secretion in Wheat by Intercropped Faba Bean: Cross-Plant Transfer, Environmental Degradation and Limited Negative Impact on Growth.","authors":"Chaosheng Luo, Huiqiong Ding, Siyin Yang, Yan Dong","doi":"10.1111/pce.15642","DOIUrl":"https://doi.org/10.1111/pce.15642","url":null,"abstract":"Benzoxazinoids (BXs) synthesised by cereal plants are vital for stress resistance. However, information regarding the induction of specific BXs (DIBOA, DIMBOA, and MBOA) in wheat by typical cereal-legume intercropping systems, such as wheat/faba bean, and their effects on neighbouring intercropping crops, remains limited. To address this knowledge gap, pot and field planting experiments were conducted to examine the influence of intercropped faba bean (IF) on the synthesis and secretion of BXs in wheat, their subsequent absorption by faba bean, and their impact on plant growth. Results showed that under both planting conditions, IF could induce an increase in the concentration of BXs in the shoots (leaves and stems) and underground (roots) parts of intercropped wheat (IW), as well as in the rhizosphere soil (p < 0.05), with the highest concentration in the leaves, reaching up to 78.0 μg/g. The concentration of BXs in various organs of IW was higher under field conditions than under potted conditions, and showed a pattern of leaves > roots > stems > rhizosphere. DIMBOA, induced to synthesise and secrete in the wheat rhizosphere, underwent accelerated degradation and reduced half-life due to the soil environment, which is rich in diverse microorganisms and organic residues. In addition, compared to monoculture faba bean (MF) with trace levels of BXs, all three BXs types were detected in the rhizosphere, roots, and shoots of IF, and all significantly increased (p < 0.05). The BXs absorbed by IF exhibited varying degrees of negative correlation with the growth parameters of wheat and faba bean, but the negative impact on growth was limited. In summary, our research findings enhance the understanding of the secretion of BXs induced by legume crops in cereal-legume intercropping systems and their absorption in interspecific interactions among legume crops.","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144148814","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}

引用次数: 0

Contribution of Carbon Dioxide Concentration to the Diurnal Variation in Land Surface Carbon Dioxide Uptake From the Atmosphere. 二氧化碳浓度对陆地表面大气吸收二氧化碳日变化的贡献。

IF 6 1区生物学

Plant, Cell & Environment Pub Date : 2025-05-27 DOI: 10.1111/pce.15638

Weize Tang, Fangyue Zhang, Paul C Stoy, Russell L Scott, Angela Che Ing Tang, Zheng Fu

{"title":"Contribution of Carbon Dioxide Concentration to the Diurnal Variation in Land Surface Carbon Dioxide Uptake From the Atmosphere.","authors":"Weize Tang, Fangyue Zhang, Paul C Stoy, Russell L Scott, Angela Che Ing Tang, Zheng Fu","doi":"10.1111/pce.15638","DOIUrl":"https://doi.org/10.1111/pce.15638","url":null,"abstract":"Gross primary productivity (GPP) is the key pathway for CO2 uptake by terrestrial ecosystems. Diurnal variation in atmospheric CO2 concentration ([CO2]) can reach 5%-15%, yet the extent to which (CO2) contributes to diurnal GPP variations across biomes and how this contribution varies across climate gradients remain unclear. Here, we used global half-hourly eddy covariance observations to quantify the importance of (CO2) in driving diurnal GPP variations and investigated the environmental factors influencing this response. On average, the relative contribution of (CO2) to diurnal GPP variations, calculated through multivariate regression, was 11% across all sites, comparable to the contributions of vapour pressure deficit (13%) and soil moisture (11%). We also observed systematic differences in the contribution of (CO2) to GPP variability across ecosystems with different plant functional types and climate conditions. Variation in the contribution of (CO2) to GPP is primarily driven by temperature-related variables. At long-term sites, we identified a significant upward trend in (CO2) influence on GPP over time, suggesting an increasing role of (CO2) in explaining GPP variations. This study quantified the importance of (CO2) to the diurnal variations of GPP across globally distributed ecosystems and highlighted that it makes a significant contribution to diurnal GPP patterns.","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144148830","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}

引用次数: 0