Functional Plant Biology最新文献_第2页

Leaf heat tolerance acclimation to warming in tropical tree species is not affected by vapor pressure deficit. 热带树种的叶片耐热性对变暖的适应不受蒸汽压亏缺的影响。

IF 2.9 4区生物学

Functional Plant Biology Pub Date : 2026-06-26 DOI: 10.1071/FP25409

Chinedu Emmanuel Eze, Roxana Alveo, Leslye Barria, Klaus Winter, Martijn Slot

{"title":"Leaf heat tolerance acclimation to warming in tropical tree species is not affected by vapor pressure deficit.","authors":"Chinedu Emmanuel Eze, Roxana Alveo, Leslye Barria, Klaus Winter, Martijn Slot","doi":"10.1071/FP25409","DOIUrl":"10.1071/FP25409","url":null,"abstract":"Mitigating the negative impact of climate change on tropical forests requires a comprehensive understanding of the direct and indirect effects of climate variables such as temperature and vapor pressure deficit (VPD). We investigated the effects of warming at two levels of VPD on the leaf heat tolerance of nine species of tropical forest trees varying in successional status in Panama. Seedlings were grown either under ambient conditions (control), at elevated temperatures (5°C daytime warming and increased relative humidity), and at elevated temperature and elevated VPD (5°C warming and decreased relative humidity). Plants were maintained under the treatment conditions for 32-103 days, allowing full development of new leaves prior to measurements. We quantified chlorophyll fluorescence-based leaf heat tolerance with two parameters derived from Fv/Fm decline curves: Tcrit and T50. Treatments significantly (P < 0.001) affected Tcrit and T50 across species. The average Tcrit value across species increased from 47.5°C (ambient) to 48.6°C in each of the two high temperature treatments, while T50 increased from 50.1 to 51.1°C. The rate of increase was 0.20°C-1Tgrowth for both Tcrit and T50. However, VPD did not significantly alter the leaf heat tolerance thresholds (P > 0.05). On average, late successional species had lower heat tolerance than early successional species, but moderately higher acclimation rate, suggesting a tradeoff between constitutive heat tolerance and upregulation of heat tolerance. The study shows that tropical species, irrespective of successional status, can partially acclimate to warming and that VPD does not play a significant independent role.","PeriodicalId":12483,"journal":{"name":"Functional Plant Biology","volume":"53 6","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148137328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Unique mechanism of acclimation of the Black Sea large diatom Pseudosolenia calcar-avis to high light intensities. 黑海大硅藻对强光适应的独特机制。

IF 2.9 4区生物学

Functional Plant Biology Pub Date : 2026-06-26 DOI: 10.1071/FP26087

Olga S Alatartseva, Liudmila V Stelmakh

{"title":"Unique mechanism of acclimation of the Black Sea large diatom Pseudosolenia calcar-avis to high light intensities.","authors":"Olga S Alatartseva, Liudmila V Stelmakh","doi":"10.1071/FP26087","DOIUrl":"10.1071/FP26087","url":null,"abstract":"Under current climatic conditions, Black Sea phytoplankton are exposed to extremely high solar radiation in the surface layer during the summer. Here, the large-celled diatom Pseudosolenia calcar-avis forms the majority of the phytoplankton biomass, often causing blooms that displace other diatom species. We suggested that it possesses a unique mechanism of acclimation to bright light that is not typical of most diatoms. To confirm this hypothesis, we investigated the acclimation of P. calcar-avis to three high light intensities in laboratory conditions. At the stage of short-term photoacclimation (0-2 h), when the algae culture was transferred from low light (17.2 μmol photons m-2 s-1) to high light (172, 516, and 946 μmol photons m-2 s-1), algal mats were formed within 10 min. After 30 min, an increase in non-photochemical quenching was observed. Moreover, at 516 and 946 μmol photons m-2 s-1, numerous chloroplasts united into conglomerates in the cell cytoplasm. At the stage of long-term photoacclimation (2-48 h), in addition to the noted processes, a decrease in the specific content of light-absorbing pigments was observed. At 516 and 946 μmol photons m-2 s-1, fluorescent parameters decreased, and the volume and surface area of cells increased. The formation of a unique multi-level protection against high light fluxes in the large diatom P. calcar-avis contributes to its dominance during summer seasons.","PeriodicalId":12483,"journal":{"name":"Functional Plant Biology","volume":"53 6","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148204338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Integrating molecular and phenotypic traits to evaluate drought stress responses in chickpea (Cicer arietinum) genotypes. 结合分子和表型性状评价鹰嘴豆（Cicer arietinum）基因型的干旱胁迫响应。

IF 2.9 4区生物学

Functional Plant Biology Pub Date : 2026-06-26 DOI: 10.1071/FP24276

Rajitha Sistu, Sushma Tiwari, Sangeeta Singh, Y P Singh

{"title":"Integrating molecular and phenotypic traits to evaluate drought stress responses in chickpea (Cicer arietinum) genotypes.","authors":"Rajitha Sistu, Sushma Tiwari, Sangeeta Singh, Y P Singh","doi":"10.1071/FP24276","DOIUrl":"10.1071/FP24276","url":null,"abstract":"Chickpea (Cicer arietinum) is a nutritionally valuable legume crops; however, its productivity is significantly constrained by drought stress. This study aimed to evaluate morpho-physiological traits and molecular response of chickpea genotypes under well-watered (control) and drought conditions to identify drought-tolerant lines. Plants of 83 chickpea genotypes (55-60 days old) were subjected to drought by withholding irrigation until soil moisture dropped 20-40%. Key physiological and agronomic traits such as relative water content (RWC), membrane stability index (MSI), chlorophyll content, yield parameters, drought tolerance efficiency (DTE), and drought susceptibility index (DSI) were measured. Data analysis was performed using R software for pairwise distance, correlation, Principal Component Aanalysis (PCA), and heat mapping. PCA explained 53.8% of the total variability, effectively separating genotypes based on stress response. Additionally, simple sequence repeat (SSR) markers were used to evaluate genetic variability. Genotypes SAGL19008 and SAGL162380 showed higher RWC, MSI, and chlorophyll content under drought, while genotype ICC4958 exhibited the highest DTE (101.19%) and the lowest DSI (60.54%), indicating strong drought tolerance. The identified genotypes hold potential for incorporation into breeding programs aimed at improving drought resilience in chickpea, thereby contributing to food security and sustainable agriculture.","PeriodicalId":12483,"journal":{"name":"Functional Plant Biology","volume":"53 6","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148204269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Optical biostimulation effects on growth, and physiological, anatomical and antioxidant traits of Lupinus termis L. grown under drought stress induced by polyethylene glycol. 光生物刺激对聚乙二醇干旱胁迫下白豆生长、生理解剖及抗氧化特性的影响

IF 2.9 4区生物学

Functional Plant Biology Pub Date : 2026-06-26 DOI: 10.1071/FP25367

Amal A A Mohamed, Manar Hassan, Samah N Azoz

{"title":"Optical biostimulation effects on growth, and physiological, anatomical and antioxidant traits of Lupinus termis L. grown under drought stress induced by polyethylene glycol.","authors":"Amal A A Mohamed, Manar Hassan, Samah N Azoz","doi":"10.1071/FP25367","DOIUrl":"10.1071/FP25367","url":null,"abstract":"Limited research has been conducted on the application of brief exposure of light-emitting diode (LED) technology in seed priming to enhance early growth of legumes. This study aimed to evaluate whether priming of seeds with blue, red, or dual blue/red LEDs could promote early growth and drought tolerance in Lupinus termis L. A 4 × 4 factorial design (seed priming, drought) was conducted. Four concentrations of polyethylene glycol (PEG)-6000 were prepared at 0, 5, 10, and 20% to simulate drought stress. The vigor index increased by 29.97%, length by 34.61%, fresh weight by 85.63%, and total chlorophyl content by 50%, respectively, in seedlings germinated from unstressed seeds primed with red LED compared to control treatment. Also, red LED priming led to enhancements in root anatomical features, showing increases in root diameter and cortex thickness by 20.21% and 36.71%, respectively. In response to drought, priming with red LED resulted in the highest increase in the contents of total carbohydrates, proteins, flavonoids, and total antioxidant capacity by 75.29%, 69.32%, 30.06%, and 72.04%, respectively compared to the control seedlings. Our findings indicate that brief exposure of seeds to red or dual blue/red LEDs prior to sowing may enhance growth, stimulate antioxidant systems, and improve tolerance to drought stress.","PeriodicalId":12483,"journal":{"name":"Functional Plant Biology","volume":"53 6","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148162359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Interactive effects of herbicides and weeds on wheat (Tritcium aestivum) under drought stress: a physiological, biochemical, and yield attributes-based approach. 干旱胁迫下除草剂和杂草对小麦（tritum aestivum）的互作效应：基于生理、生化和产量属性的方法

IF 2.9 4区生物学

Functional Plant Biology Pub Date : 2026-06-26 DOI: 10.1071/FP25304

Dasari Sreekanth, Deepak Vishwanath Pawar, P S Basavaraj, Rajeev Kumar, Survi Mahesh, A Jamaludheen, P K Singh, J S Mishra

{"title":"Interactive effects of herbicides and weeds on wheat (Tritcium aestivum) under drought stress: a physiological, biochemical, and yield attributes-based approach.","authors":"Dasari Sreekanth, Deepak Vishwanath Pawar, P S Basavaraj, Rajeev Kumar, Survi Mahesh, A Jamaludheen, P K Singh, J S Mishra","doi":"10.1071/FP25304","DOIUrl":"10.1071/FP25304","url":null,"abstract":"Weed infestation and drought stress are major biotic and abiotic constraints to global agricultural productivity, causing substantial yield losses and escalating management costs. Weeds alone contribute to an predicted annual economic loss of USD32 billion, while drought can reduce crop productivity by nearly 50%, posing a serious threat to food security. In the perspective of Sustainable Development Goals SDG-2 (Zero Hunger) and SDG-13 (Climate Action), this 2-year study (2022-2023) evaluated the impact of drought stress on the efficacy of the herbicide (clodinafop + metsulfuron) against the weeds Phalaris minor and Medicago denticulata in wheat (Triticum aestivum). Herbicide was applied to well-watered (WW) and drought-stressed (DS) environments, 10 days after irrigation was withheld in the DS treatments. Results indicated a significant reduction in herbicide efficacy under DS, with a greater reduction observed against M. denticulata, leading to poor weed management. The survival of weeds under DS conditions elevated oxidative stress in wheat, particularly in the presence of M. denticulata, which caused higher reactive oxygen species accumulation and greater yield losses compared with P. minor. A clear association was observed between weed biomass, oxidative damage, and yield reduction. The findings highlight that wheat is more vulnerable to M. denticulata under drought, emphasizing the need to consider environmental interactions in designing effective and climate-resilient weed management strategies.","PeriodicalId":12483,"journal":{"name":"Functional Plant Biology","volume":"53 6","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148316749","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Effects of GA3 and PGPR on germination and seedling development of Echinacea (Echinacea purpurea L.) across different seed ages. 不同种龄GA3和PGPR对紫锥菊种子萌发和幼苗发育的影响

IF 2.9 4区生物学

Functional Plant Biology Pub Date : 2026-06-26 DOI: 10.1071/FP25398

Mehmet Uğur Yıldırım, Sude Cangür, Ercüment Osman Sarıhan, Tuba Arjumend

{"title":"Effects of GA3 and PGPR on germination and seedling development of Echinacea (Echinacea purpurea L.) across different seed ages.","authors":"Mehmet Uğur Yıldırım, Sude Cangür, Ercüment Osman Sarıhan, Tuba Arjumend","doi":"10.1071/FP25398","DOIUrl":"10.1071/FP25398","url":null,"abstract":"This study investigated the effects of gibberellic acid (GA3) and plant growth-promoting rhizobacteria (PGPR) strains (B. megaterium, B. subtilis, and B. amyloliquefaciens), applied alone and in combination, on germination and early seedling development of Echinacea purpurea L. seeds of different ages. Aging seeds often exhibit reduced germination and seedling vigor, limiting uniform plant establishment. The findings demonstrated that GA3 increased germination percentage, plant height, leaf number, and root weight, reducing the detrimental impacts of seed senescence. Additionally, PGPR inoculation enhanced seedling performance in a strain-specific manner: B. megaterium improved germination, leaf number, and root length, whereas plant height and root weight were increased by B. amyloliquefaciens. The greatest gains were obtained from combined treatments, indicating synergistic effects. Despite these positive effects, seed age remained critical, as older seeds, even after treatment, did not fully match fresh seeds. Overall, these findings indicate that GA3 and PGPR inoculation offer a practical and sustainable approach to enhance seedling establishment and early growth, particularly in aged seeds, as such biostimulants can improve nutrient uptake and stimulate root development. Future research should explore long-term field performance, economic feasibility, and physiological and molecular mechanisms underlying seed aging and its mitigation.","PeriodicalId":12483,"journal":{"name":"Functional Plant Biology","volume":"53 6","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148204164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Mitigation of nickel and lead stress in wheat (Triticum aestivum L.) by Arthrospira platensis and zinc-boron: effects on metal bioaccumulation, plant growth, antioxidants, and gene expression. 平节螺旋体和锌硼对小麦镍铅胁迫的缓解：对金属生物积累、植株生长、抗氧化剂和基因表达的影响

IF 2.9 4区生物学

Functional Plant Biology Pub Date : 2026-06-26 DOI: 10.1071/FP25411

Rana H Diab, Mostafa E Elshobary, Omar A A I Al-Elwany, Mohamed S Elsaka, Walaa A Abo-Shanab

{"title":"Mitigation of nickel and lead stress in wheat (Triticum aestivum L.) by Arthrospira platensis and zinc-boron: effects on metal bioaccumulation, plant growth, antioxidants, and gene expression.","authors":"Rana H Diab, Mostafa E Elshobary, Omar A A I Al-Elwany, Mohamed S Elsaka, Walaa A Abo-Shanab","doi":"10.1071/FP25411","DOIUrl":"10.1071/FP25411","url":null,"abstract":"Crop productivity and food safety are seriously threatened by heavy metal contamination, especially with nickel (Ni) and lead (Pb). The purpose of this study was to assess how well zinc-boron (Zn-B) foliar application and irrigation with Arthrospira platensis extract (APE) reduced Ni and Pb stress in wheat (Triticum aestivum L.). After being treated with 10% APE or Zn-B, wheat plants were exposed to 100 μM Ni or Pb. Gene expression, heavy metal accumulation, antioxidant enzyme activities, photosynthetic efficiency, and plant growth parameters were evaluated. Growth, photosynthetic pigments, and antioxidant defenses were all markedly hampered by both metals, but Ni's effects were more pronounced. These effects were successfully lessened by APE treatment, which restored shoot and root length, leaf area, and photosynthetic efficiency (Fv/Fm) better than Zn-B. Additionally, APE increased antioxidant activity (SOD, CAT, APX), and their corresponding genes were upregulated. Furthermore, APE enhanced yield characteristics, such as spike length and grain weight, and dramatically decreased Ni and Pb accumulation by 57.4% and 50.9%, respectively. Potential in phycoremediation is suggested by increased bioconcentration and transfer factors for Zn and B under APE treatment. According to these results, APE is a viable, environmentally friendly method for improving plant resistance to heavy metal stress, increasing wheat yield, and lowering possible health hazards.","PeriodicalId":12483,"journal":{"name":"Functional Plant Biology","volume":"53 6","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148294213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Morpho-molecular profiling of rice (Oryza sativa L.) germplasm for submergence tolerance using SSR markers. 水稻（Oryza sativa L.）耐淹种质的SSR标记形态分子分析。

IF 2.9 4区生物学

Functional Plant Biology Pub Date : 2026-06-26 DOI: 10.1071/FP25138

Hafiz Sabah-Ud-Din Mazhar, Javaria Tabassum, Samina Sarfraz, Fariha Shahzadi, Muhammad Sabar, Qurban Ali, Hosam O Elansary, Alia Anwar, Muhammad Arshad Javed

{"title":"Morpho-molecular profiling of rice (Oryza sativa L.) germplasm for submergence tolerance using SSR markers.","authors":"Hafiz Sabah-Ud-Din Mazhar, Javaria Tabassum, Samina Sarfraz, Fariha Shahzadi, Muhammad Sabar, Qurban Ali, Hosam O Elansary, Alia Anwar, Muhammad Arshad Javed","doi":"10.1071/FP25138","DOIUrl":"10.1071/FP25138","url":null,"abstract":"Rice (Oryza sativa L.) is a primary staple for more than half of the world's population, ranking as the third most-consumed cereal globally and a key contributor to food security. However, climate change is intensifying abiotic stresses, including prolonged flooding during the monsoon season (late June - September), which can drastically reduce rice yield. This submergence stress poses significant challenges in many rice-growing regions worldwide, particularly in low-lying areas of South and Southeast Asia. In Pakistan, where rice is the second most-consumed staple, flooding similarly threatens production. In this study, twenty rice genotypes (3 international lines, 17 national basmati and non-basmati cultivars) were evaluated in a triplicate manner for submergence tolerance. Phenotypic data related to yield and related traits were recorded during 2023-2024 at the Rice Research Institute, Kala Shah Kaku (Pakistan), under natural stagnant flood conditions. Survival percentage and key physiological parameters such as plant height, tiller numbers, and other yield related traits were assessed after complete submergence, and differences were analyzed by ANOVA (P < 0.05). The cultivars KSK-282, ELT-53, and KSK-133 exhibited significantly higher survival rates than others. Molecular validation using five SSR markers linked to the SUB1 QTL revealed that markers RM 7481, RM 23869, and RM 23865 distinguished tolerant from sensitive genotypes. Notably, PK-SUB-15-35 carried the SUB1 allele and showed the highest tolerance. These identified tolerant varieties and associated genetic markers provide valuable resources for breeding programs aimed at improving rice resilience to flooding.","PeriodicalId":12483,"journal":{"name":"Functional Plant Biology","volume":"53 6","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147987198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Proteomic insights into growth-related molecular responses in the leaves of Para rubber seedlings (Hevea brasiliensis) treated with Bacillus cyclic lipopeptide extract and exogenous salicylic acid. 环芽孢杆菌脂肽提取物和外源水杨酸处理对巴西橡胶树叶片生长相关分子响应的蛋白质组学研究

IF 2.9 4区生物学

Functional Plant Biology Pub Date : 2026-06-26 DOI: 10.1071/FP26012

Napatsorn Arunphan, Pongsakorn Kruaweangmol, Tanat Uan-On, Narumon Phaonakrop, Sittiruk Roytrakul, Thammarit Khamplod, Nisit Watthanasakphuban, Paiboon Tunsagool

{"title":"Proteomic insights into growth-related molecular responses in the leaves of Para rubber seedlings (Hevea brasiliensis) treated with Bacillus cyclic lipopeptide extract and exogenous salicylic acid.","authors":"Napatsorn Arunphan, Pongsakorn Kruaweangmol, Tanat Uan-On, Narumon Phaonakrop, Sittiruk Roytrakul, Thammarit Khamplod, Nisit Watthanasakphuban, Paiboon Tunsagool","doi":"10.1071/FP26012","DOIUrl":"10.1071/FP26012","url":null,"abstract":"Rubber trees (Hevea brasiliensis) are essential to industry but are highly vulnerable to diseases and environmental stress, particularly during the seedling stage in tropical climates. Growth-related molecular responses offer a sustainable strategy to enhance growth and stress tolerance while minimising chemical inputs. This study explored protein changes in rubber seedling leaves treated with a cyclic lipopeptide (CLP) extract obtained from Bacillus subtilis strain PTKU12 or exogenous salicylic acid (exogenous SA), with both treatments analysed relative to the control. Proteomic analysis revealed distinct protein expression patterns for each treatment. Protein clustering was assessed using partial least squares discriminant analysis, and unique proteins were identified through a Venn diagram. Functional annotation was performed using the Gene Ontology database, and protein interrelationships were visualised via a Sankey diagram. The CLP extract notably induced proteins involved in photosynthesis, oxidative phosphorylation, and secondary metabolite biosynthesis, which enhanced energy production, metabolic capacity, and structural integrity. Exogenous SA primarily affected proteins related to metabolic regulation and cellular signalling, indicating its role in rapid stress response. These findings highlight CLP extract from B. subtilis PTKU12 as an effective biostimulant, supporting molecular processes associated with growth-related metabolism and stress resilience in rubber seedlings while supporting the goals of sustainable agriculture.","PeriodicalId":12483,"journal":{"name":"Functional Plant Biology","volume":"53 6","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148204278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Environmental influences and coordination of Rhododendron carbon and water economics at leaf and species scales. 叶片和物种尺度上杜鹃花碳水经济的环境影响与协调

IF 2.9 4区生物学

Functional Plant Biology Pub Date : 2026-04-24 DOI: 10.1071/FP25222

Miranda K Shetzer, Sharon C Danielson, Lawren Sack, Christine Scoffoni, Juliana S Medeiros

{"title":"Environmental influences and coordination of Rhododendron carbon and water economics at leaf and species scales.","authors":"Miranda K Shetzer, Sharon C Danielson, Lawren Sack, Christine Scoffoni, Juliana S Medeiros","doi":"10.1071/FP25222","DOIUrl":"10.1071/FP25222","url":null,"abstract":"The ratio of leaf surface area to dry mass, specific leaf area (SLA), relates function to carbon investment, but how the environment impacts SLA and whether SLA represents whole-plant resource acquisition remains debated. We tested two hypotheses using 12 Rhododendron species from four taxonomic sections with different leaf habits: (1) for leaves, we hypothesized that species, leaf position and light interception impact SLA, but higher SLA would be accompanied by higher net photosynthesis (A), stomatal conductance (gs), and maximum leaf hydraulic conductance (Kleaf), maintaining A/gs and Kleaf/gs across the canopy, and (2) for species, we hypothesized those from stressful climates would have lower SLA, higher Kleaf, higher stomatal density, and smaller stomata. At the leaf-scale, Kleaf was higher for species with lower SLA, contrary to predictions. We observed strong coordination of SLA and carbon to nitrogen ratio, but the relationship of Kleaf/gs to SLA was characterized by species replacement along the leaf economic spectrum, suggesting weak leaf-level trait coordination as a mechanism for low drought tolerance. Across species, lower SLA was associated with lower summer precipitation, lower precipitation seasonality, and larger guard cells. We show that leaf habit and habitat associations shape the functional significance of SLA, determining resource acquisition at leaf and species scales.","PeriodicalId":12483,"journal":{"name":"Functional Plant Biology","volume":"53 4","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147573292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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