Flora最新文献

{"title":"Revealing leaf anatomical characters that impact the taxonomy of Calea sect. Calea (Asteraceae)","authors":"João Victor da Costa Santos ,&nbsp;Maria José de Sousa Monteiro ,&nbsp;Genilson Alves dos Reis e Silva ,&nbsp;E Josiane Silva Araújo","doi":"10.1016/j.flora.2025.152804","DOIUrl":"10.1016/j.flora.2025.152804","url":null,"abstract":"<div><div>This is the first report of a comparative leaf anatomy study of <em>Calea</em>, a genus of Asteraceae with a markedly complicated taxonomic history. The purely structural analyses allowed us to distinguish anatomical patterns that have not yet been explored in the literature of the group. The different types of trichomes, both tector and glandular, are informative in the taxonomy of the genus. The other secretory structures and the different conformational patterns of the vascular system in the midrib and petiole deserve to be highlighted for contributing to the distinction of <em>Calea</em> species, especially <em>C. serrata</em> from <em>C. pinnatifida</em>, two morphologically similar species. The similarity analysis reinforces the structural similarity between the species of <em>Calea</em> sect., distinguishing them from the outgroup, whose leaves are distinct due to the absence of laticifers and isobilateral mesophyll. Histochemical studies are needed to investigate the metabolites secreted by the cavities, laticifers, nectaries and secretory trichomes. Many of these structures have chemical content that has not yet been explored in the genus. We present an identification key and a binary/multistate matrix that can support future proposals for infrageneric classification in <em>Calea</em>.</div></div>","PeriodicalId":55156,"journal":{"name":"Flora","volume":"331 ","pages":"Article 152804"},"PeriodicalIF":1.7,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144702641","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}

{"title":"Gynoecium and fruit development in Oenocarpus mapora Karsten (Arecoideae, Arecaceae)","authors":"Genise Luz de Oliveira ,&nbsp;Maria Gracimar Pacheco de Araújo ,&nbsp;Fred Stauffer","doi":"10.1016/j.flora.2025.152814","DOIUrl":"10.1016/j.flora.2025.152814","url":null,"abstract":"<div><div><em>Oenocarpus mapora</em>, commonly known as “bacabinha,” is a culturally and economically important palm in the Amazon region, especially due to its use in the production of “vinho de bacaba,” a traditional beverage made from its fruit pulp. This study describes the ontogenetic development of the gynoecium through to the mature fruit, based on morphological, anatomical, and histochemical analyses. Individuals were monitored in the field over a three-year period, and samples at different floral and fruit developmental stages were examined using light microscopy, scanning electron microscopy, and morphometry. The results confirm that the gynoecium is unilocular, uniovulate, and pseudomonomerous, with no anatomical evidence of carpel fusion—an important insight for the comparative floral morphology of the genus <em>Oenocarpus</em>. Fruits were analyzed in three developmental stages and showed that key structural features, such as mechanical tissues in the pericarp, differentiate early and are maintained throughout maturation, forming a continuous protective matrix around the seed. The fruit is classified as a pyrene-type drupe with a complex (cocosoid-arecoid) endocarp, lignified and composed of fibers adhering to the seed. An elongated embryo with a functional haustorial region was also observed in the mature fruit, evidenced by starch accumulation in the cotyledonary tissues. These early-formed structures reflect adaptive strategies for seed protection and dispersal. The findings offer novel insights into the developmental patterns of the genus and provide valuable information for propagation, cultivation, and conservation strategies involving Amazonian palms.</div></div>","PeriodicalId":55156,"journal":{"name":"Flora","volume":"331 ","pages":"Article 152814"},"PeriodicalIF":1.8,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144724214","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}

{"title":"Prediction of suitable areas for Prunus serrulata Lindl. in the context of future climate change","authors":"Mengting He ,&nbsp;Jiayiming Wang ,&nbsp;Chunying Long ,&nbsp;Zhiyi Zou ,&nbsp;Ninghui Pan ,&nbsp;Lihan Huang","doi":"10.1016/j.flora.2025.152827","DOIUrl":"10.1016/j.flora.2025.152827","url":null,"abstract":"<div><div>Global climate change profoundly reshapes species distribution patterns. <em>Prunus serrulata</em> Lindl., a critically important ornamental species in China with high economic and aesthetic value, serves as an ideal model to assess such impacts. Species distribution modeling has become a key tool to evaluate the potential distribution of species under climate change. Here, using the maximum entropy (MaxEnt) model validated by a high AUC value (0.938), we integrated 127 occurrence records and 13 environmental variables to project its current and future distribution under four CMIP6 scenarios (SSP126, SSP245, SSP370, SSP585). The results showed that the five factors of driest monthly precipitation (Bio14, 32.5 % contribution), wettest monthly precipitation (Bio13, 18.4 %), coldest monthly minimum temperature (Bio6, 18.2 %), elevation (elev, 13.1 %), and isothermality (Bio3, 3.9 %) were the dominant factors affecting the distribution of <em>P. serrulata</em>. Currently, high-suitability areas (526,500 km², 5 % of China) are concentrated in the middle and lower reaches of the Yangtze River. Future projections indicate a 5–15 % expansion of high-suitability areas by 2041–2060, peaking under SSP585 scenario, while the distribution centroids shift northeastward by 220–300 km, suggesting potential relocation of the cultivation zone. This method provides a scientific basis for introducing and preserving germplasm, cultivating <em>P. serrulata</em>, optimizing bud dormancy garden layouts, enhancing the ecological benefits of urban vegetation, and increasing the aesthetic appeal of ornamental features.</div></div>","PeriodicalId":55156,"journal":{"name":"Flora","volume":"331 ","pages":"Article 152827"},"PeriodicalIF":1.8,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144925200","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}

{"title":"Anatomical and physiological adjustments reveal mechanisms of drought response in seedlings","authors":"Stefany Priscila Reis Figueiredo ,&nbsp;Beatriz Vitória Barbosa ,&nbsp;Renan Marques Siqueira ,&nbsp;Caroline Signori-Müller ,&nbsp;Grazielle Sales Teodoro","doi":"10.1016/j.flora.2025.152824","DOIUrl":"10.1016/j.flora.2025.152824","url":null,"abstract":"<div><div>Some tropical forests experience prolonged droughts, making it essential to understand species' drought resistance mechanisms. Anatomical traits related to hydraulic architecture explain how water transport occurs in plants and how species cope with water scarcity. However, the ability of species to adjust their hydraulic architecture to water availability remains unclear. We assessed variations in hydraulic architecture and physiological responses to drought, focusing on the coordination between anatomical and physiological traits. This study was conducted in a greenhouse with seedlings of three tropical species: <em>Clitoria fairchildiana, Manilkara elata</em>, and <em>Bertholletia excelsa</em>. We applied three water availability treatments (15 %, 50 %, and 100 % of field capacity) for four months. We measured branch anatomical traits: Vessel area (VA), Hydraulic diameter (Dh), Vessel density (VD), Vessel grouping index (VG), Vessel lumen fraction (F), and Xylem theoretical conductivity (Ks); physiological traits: Leaf predawn (Ψ_PD) and midday (Ψ_MD) water potential, and pressure–volume curve traits. All species adjusted their traits in response to water availability. <em>Manilkara elata</em>, the species with the highest wood density, exhibited smaller anatomical and hydraulic trait variations, with only a decrease in turgor loss point under water limitation. The two species with lower wood density showed contrasting responses. <em>Bertholletia excelsa</em> enhanced hydraulic efficiency by increasing Ks, VA and Dh, while <em>C. fairchildiana</em> increased drought resistance by adjusting turgor loss point and osmotic potential. Our results highlight a trade-off between water transport efficiency and drought resistance in <em>C. fairchildiana</em>. These results indicate distinct responses in each species that contribute to species survival under water limitation.</div></div>","PeriodicalId":55156,"journal":{"name":"Flora","volume":"331 ","pages":"Article 152824"},"PeriodicalIF":1.8,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144912741","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}

{"title":"Leaf traits mediate galling insect frequency on woody plants in a Neotropical savanna","authors":"Leandro Maracahipes ,&nbsp;Leonardo Lima Bergamini ,&nbsp;Fernando Landa Sobral ,&nbsp;Mário Almeida-Neto ,&nbsp;Marcus Vinicius Cianciaruso ,&nbsp;Walter Santos de Araújo","doi":"10.1016/j.flora.2025.152800","DOIUrl":"10.1016/j.flora.2025.152800","url":null,"abstract":"<div><div>Galling insects are highly specialized herbivores that exhibit intimate interactions with their host plants. However, the role of interspecific variation in plant traits on galling species occurrence has been little explored. Here, we assessed the roles of nutritional (P:N ratio) and defensive (latex, specific leaf area, leaf toughness and extrafloral nectaries) leaf traits in determining galling insect frequency and richness across 50 woody plant species in a Brazilian savanna. Specifically, we tested the hypotheses that nutritional leaf traits attract galling insects, thus increasing their frequency and species richness, while defensive leaf traits reduce galling frequency and richness. Sampling was conducted during the rainy season, resulting in the identification of 82 galling insect species distributed among 42 plant species. We found no relationship between leaf traits and galling species richness. However, latex reduced the frequency of galling insects, whereas the presence of extrafloral nectaries, tougher leaves and higher leaf P:N ratio were positively associated with galling frequency. Our findings indicate that latex plays an important role on the occurrence of galling insects, presumably by hindering oviposition and reducing egg survival and larval hatching. Additionally, the presence of extrafloral nectaries may offer protection against natural enemies, tough leaves can increase leaf longevity and enhance defense against herbivory, and galling species prefer plant with better nutritional quality. In contrast to previous studies, we demonstrate that defensive and nutritional leaf traits do not affect galling species richness; rather, defensive traits influence the frequency of galling insects among savanna plant species.</div></div>","PeriodicalId":55156,"journal":{"name":"Flora","volume":"331 ","pages":"Article 152800"},"PeriodicalIF":1.7,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144687523","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}

{"title":"The secrets of variegated leaves: Molecular to physiological and ecological insights","authors":"Anjali Bhardwaj ,&nbsp;Dipti Agarwal ,&nbsp;Upma Bhatt ,&nbsp;Sunita Parihar ,&nbsp;Vineet Soni","doi":"10.1016/j.flora.2025.152815","DOIUrl":"10.1016/j.flora.2025.152815","url":null,"abstract":"<div><div>Leaf variegation, characterized by multicolored patterns such as white, yellow, red, or purple hues, deviates from the uniform green coloration typical of most plants due to complex genetic, physiological, and structural mechanisms. It can arise from stable genetic mutations or transient environmental influences and is broadly classified into structural and pigment-based types. Mechanistically, variegation is further divided into four categories based on chlorophyll absence, internal air spaces, epidermal structure, or localized pigment expression. Genetic studies in model species such as <em>Arabidopsis thaliana</em>, tobacco, rice, and tomato have revealed that mutations affecting chloroplast biogenesis and pigment biosynthesis often underlie variegated phenotypes. In addition to its ornamental appeal, variegation plays critical physiological and ecological roles, influencing photosynthesis, photoprotection, thermoregulation, and plant-herbivore interactions. Pseudo-variegation, a visually similar but a non-genetic phenomenon induced by other organisms, can also confer adaptive advantages such as herbivore deterrence and environmental stress tolerance. Recent research highlights the importance of integrating molecular, anatomical, and ecological perspectives to fully understand the developmental and adaptive significance of leaf variegation in higher plants.</div></div>","PeriodicalId":55156,"journal":{"name":"Flora","volume":"331 ","pages":"Article 152815"},"PeriodicalIF":1.8,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144766589","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}

{"title":"Drought priming enhances photosynthesis and growth of the ephemeral plant Erodium oxyrhinchum","authors":"Yanfeng Chen ,&nbsp;Qianli Zhang ,&nbsp;Qian Liu ,&nbsp;Hongmin Li ,&nbsp;Chen Gong ,&nbsp;Lan Zhang ,&nbsp;Lingwei Zhang ,&nbsp;Huiliang Liu","doi":"10.1016/j.flora.2025.152822","DOIUrl":"10.1016/j.flora.2025.152822","url":null,"abstract":"<div><div>The increasing frequency and intensity of drought events due to climate change pose significant challenges to plant growth. However, it remains unclear whether drought priming during early growth stages can enhance plant resilience and mitigate the adverse effects of severe drought stress. To address this, we conducted an experiment on the desert ephemeral plant <em>Erodium oxyrhinchum</em> to examine its photosynthesis and growth responses to drought priming in the Gurbantunggut Desert, China. The field experiment included two treatments: (1) drought priming applied twice at the seedling stage followed by severe drought stress at the reproductive stage, and (2) adequate irrigation at the seedling stage followed by severe drought stress at the reproductive stage. Our results showed that drought priming significantly reduced stomatal conductance during the full leaf expansion stage, but enhanced net photosynthesis at the initial flowering stage. Compared to the control, drought-primed plants exhibited lower intercellular CO₂ concentrations at both the full leaf expansion and initial flowering stages, along with increased stomatal limitation and intrinsic water use efficiency. Additionally, drought priming significantly elevated superoxide dismutase activity and soluble sugar accumulation at the initial flowering stage. Throughout the plant’s life cycle, free proline and soluble sugar concentration initially increased and then declined, with both superoxide dismutase activity and soluble sugar concentration remaining significantly higher at the initial flowering stage under drought priming. These findings indicate that drought priming enhances stress tolerance by activating protective metabolic mechanisms, reducing transpiration, and improving both water use and photosynthetic efficiency. Finally, drought-primed plants not only exhibited greater resilience to severe drought stress but also demonstrated compensatory growth, leading to increased individual total biomass and reproductive output. Therefore, drought priming may serve as a promising strategy for sustaining plant growth under extreme drought conditions and offers valuable insights for vegetation restoration in arid and semi-arid ecosystems.</div></div>","PeriodicalId":55156,"journal":{"name":"Flora","volume":"331 ","pages":"Article 152822"},"PeriodicalIF":1.8,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144865450","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}

{"title":"Evaluating the oriental beech (Fagus orientalis L.) trees traits under different silvicultural systems in broad-leaved forest","authors":"Hasan Balabandi ,&nbsp;Kambiz Abrari Vajari ,&nbsp;Naghi Shabanian","doi":"10.1016/j.flora.2025.152805","DOIUrl":"10.1016/j.flora.2025.152805","url":null,"abstract":"<div><div>The deciduous-broadleaved oriental beech (<em>Fagus orientalis</em> L.) forests in Hyrcanian region have been logged under different silvicultural systems. In this study, we aim to investigate the influences of the three silvicultural systems including single-tree selection, shelterwood systems and control (unlogged) on the oriental beech tree traits in a broad-leaved forest. A total of 90 beech trees in overstorey were randomly sampled in each applied systems(<em>n</em> = 270), then their crown dimensions and some morphological as well as chemical compounds of leaves were measured. The analysis of variance (ANOVA) showed the impact of different silvicultural systems on all beech tree traits and we found significantly greater basal area, height, volume, crown length and crown width for beech trees under both single-tree selection system and control site(<em>P</em> ≤ 0.01), compared with shelterwood system. The higher values of leaf length, leaf width, leaf area, leaf fresh weight, specific leaf area and leaf perimeter of beech trees were measured in forest managed by single-tree selection system (<em>P</em> ≤ 0.01). Some chemical elements showed significant differences among silvicultural systems, as the highest mean value of N, C, chlorophyll <em>a</em>, and chlorophyll <em>b</em> was observed in the leaf of beech tree in forest managed under single-tree selection system (<em>P</em> ≤ 0.01, <em>P</em> ≤ 0.05), which might be related to nutrient availability in forest. Regression analysis showed that height/diameter ratio and some beech tree traits including DBH, crown width, crown surface area, crown volume were significantly negatively correlated for three silvicultural systems (<em>p</em> = 0.000). In general, uneven-aged silvicultural system including the single-tree selection system, result in variations in beech tree structure that may affect the tree growth and timber quality within beech forest in Hyrcanian region. This is something that must be taken into account when designing forestry projects.</div></div>","PeriodicalId":55156,"journal":{"name":"Flora","volume":"331 ","pages":"Article 152805"},"PeriodicalIF":1.7,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144711768","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}

{"title":"Which habitat element has the critical impact on photosynthetic pigments, carbohydrates, and antioxidant defense in epiphytic mosses?","authors":"Tahereh A. Aghajanzadeh ,&nbsp;Seyedeh Sepideh Seyed Mousavi ,&nbsp;Farshad Mohammadzadeh Gharegheshlagh ,&nbsp;Afshin Fayyaz Movaghar","doi":"10.1016/j.flora.2025.152816","DOIUrl":"10.1016/j.flora.2025.152816","url":null,"abstract":"<div><div>Mosses, as an essential component of the Hyrcanian Forest ecosystem, are influenced by various ecological factors. The current study aimed to investigate the role of habitat elements on the concentration of photosynthetic pigments, carbohydrates, antioxidant compounds, and antioxidative enzymes activity in three native epiphytic moss species from the Neckeraceae family: <em>Forsstroemia remotifolia, Homalia besseri</em>, and <em>Neckera complanata.</em> The mosses were collected from the Hyrcanian Forest in Golestan Province, northern Iran, along three bands of an elevational transect with different climatic conditions. The results revealed that in <em>H. besseri</em> and <em>F. remotifolia</em> the metabolite concentrations and antioxidative enzyme activities were not correlated with elevation or associated climatic factors. Instead, they were strongly influenced by the characteristics of their host trees. Notably, the patterns of change in metabolites including chlorophyll a and b, soluble carbohydrates, proteins, phenols, and the activity of antioxidative enzymes such as superoxide dismutase (SOD) and peroxidase were similar in these two moss species, regardless of whether they were collected from low or high elevations. This similarity may be attributed to their common host tree, <em>Parrotia persica.</em> It appears that the host tree plays a significant role in shaping the mosses’ metabolite profiles particularly through traits such as bark thickness and pH. In contrast, the metabolite composition in <em>N. complanata</em>, including photosynthetic pigments, soluble proteins, flavonols, and SOD activity, was influenced by both the host tree and elevation. Moreover, <em>N. complanata</em> exhibited different responses to host tree features (bark thickness and pH) compared to <em>H. besseri</em> and <em>F. remotifolia</em>. This study concludes that host tree characteristics play a pivotal role in modulating the physiological responses of epiphytic mosses, revealing species-specific sensitivities to elevational gradients. The findings emphasize the intricate interaction between host bark traits and abiotic environmental factors in shaping moss metabolism within the Hyrcanian Forest ecosystem.</div></div>","PeriodicalId":55156,"journal":{"name":"Flora","volume":"331 ","pages":"Article 152816"},"PeriodicalIF":1.8,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144749382","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}

{"title":"Heat-resistance response of Ceiba aesculifolia seedlings induced by thermopriming","authors":"Estela Corral-Castrejón ,&nbsp;Leslie Hinojosa-Barrera ,&nbsp;Ximena Gómez-Maqueo ,&nbsp;Eleazar Martínez-Barajas ,&nbsp;Noé Velázquez-Rosas ,&nbsp;Alicia Gamboa-deBuen","doi":"10.1016/j.flora.2025.152825","DOIUrl":"10.1016/j.flora.2025.152825","url":null,"abstract":"<div><div><em>Ceiba aesculifolia</em> (ceiba) is a tropical plant species with high resistance to environmental stresses and assigns biomass and reserves to belowground tissues to cope with hydric stress. We determined if thermotolerance can be induced in ceiba seedlings by implementing a heat stress and heat priming protocol to germinating seeds. Assessment of seedling survival and development was done at two developmental stages, fully expanded cotyledon and three true leaves seedlings under controlled conditions, as well as saplings under field conditions. Heat stress was induced by subjecting germinated seeds to different supra-optimal temperatures for 45 min. A 100 % of seedlings subjected to heat below 42 °C survived. Seedling survival decreased at 48 °C and 50 °C, the latter also accumulated starch as a result of the treatment. The priming temperature was set at 37 °C since germinating seeds did not present any injury in the radicle and all seedlings survived. Thermopriming treatment at 37 °C for 90 min promoted 50 % of seedling survival to the lethal temperature (51 °C) and an increase in starch accumulation. No significant change on plant height and coverage in field conditions were detected in thermo-primed plants. Seedling survival and further development at 51 °C after thermopriming indicates the induction of thermotolerance mechanisms in ceiba by the presence of two or three tubers in 50 % of the treated seedlings and a 27 % increase in tuber starch content. These early developmental / functional responses in ceiba could allow them to develop and establish in heat-stressed soil environments.</div></div>","PeriodicalId":55156,"journal":{"name":"Flora","volume":"331 ","pages":"Article 152825"},"PeriodicalIF":1.8,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144908705","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}