TreesPub Date : 2025-01-15DOI: 10.1007/s00468-024-02578-7
Mikael Moura, Filipe Campelo, Ana Carvalho, Cristina Nabais, Núria Garcia-Forner
{"title":"Growth and climate drive resin production in Pinus pinaster and Pinus pinea","authors":"Mikael Moura, Filipe Campelo, Ana Carvalho, Cristina Nabais, Núria Garcia-Forner","doi":"10.1007/s00468-024-02578-7","DOIUrl":"10.1007/s00468-024-02578-7","url":null,"abstract":"<div><h3>Key message</h3><p>Resin production and growth in <i>Pinus pinaster</i> and <i>Pinus pinea</i> show a trade-off under varying environmental conditions, impacting future resin yields under climate change.</p><h3>Abstract</h3><p>Resin production in pines constitutes an important defense mechanism against biotic and abiotic factors, and it is also an important forestry product. In Portugal, resin is mainly extracted from <i>Pinus pinaster</i> and to a lesser extent from <i>Pinus pinea</i>, the two most widespread pine species in the country. The resin tapping season coincides with the growing season, from spring to autumn. Thus, growth and resin production may compete for carbon, although their response to environmental conditions can differ. This study investigates how the daily growth and biweekly resin production of <i>P. pinaster</i> and <i>P. pinea</i> in a mixed stand respond to environment over the 2021 growing season. During the resin tapping period, growth of both species showed a positive correlation with temperature, soil moisture, air relative humidity and radiation. Resin yield of both species showed a positive relation with soil temperature, and a negative relation with growth, suggesting a trade-off between growth and resin yield. Our results indicate that both growth and resin yield increase with temperature, with growth being more sensitive to soil moisture and relative humidity. Under a scenario of rising temperatures and precipitation reduction, both functions (growth and resin yield) are expected to be affected positively. However, resin production depends on carbon assimilation and allocation, both of which are reduced or altered during periods of extreme drought. This can lead to increasing competition for carbon allocation between growth, storage and resin yield, making resin yield responses to climate change scenarios uncertain.</p></div>","PeriodicalId":805,"journal":{"name":"Trees","volume":"39 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142976602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
TreesPub Date : 2025-01-14DOI: 10.1007/s00468-025-02599-w
Tatiana C. D. Pereira, Kaynara F. L. Kavasaki, Kellen B. Carmo, Ingo Isernhagen, Gilcele C. M. Berber, Anderson Ferreira
{"title":"Reforestation impact on soil bacterial biodiversity antagonists of fungal pathogens in Amazon biome","authors":"Tatiana C. D. Pereira, Kaynara F. L. Kavasaki, Kellen B. Carmo, Ingo Isernhagen, Gilcele C. M. Berber, Anderson Ferreira","doi":"10.1007/s00468-025-02599-w","DOIUrl":"10.1007/s00468-025-02599-w","url":null,"abstract":"<div><p>Forest restoration is one of the key approaches employed to reverse environmental degradation, although there is no consensus regarding the best model to be applied for this purpose. It has been hypothesized that overall bacterial density and the diversity of bacterial antagonists in replanted areas are modulated by the reforestation model employed. To test this hypothesis, we have compared the bacterial density in soil samples from ten different replanted forest areas and from a native forest for two consecutive years, evaluated the antagonist activities of bacterial isolates from these areas against <i>Fusarium oxysporum</i> and <i>Rhizoctonia solani</i>, and identified the bacterial antagonists by 16S rRNA gene sequencing. All timber and non-timber species employed in the reforestation models were native to the Amazon biome, with the exception of eucalyptus, and additional cover plants were employed in three of the areas. No significant differences were found in bacterial densities between replanted forest areas in either of the years, but significant between-year differences were detected in five of the plots. Twenty of the 220 bacterial isolates tested showed antagonistic activity and of these three were classified within the phylum Proteobacteria and 17 were classified as Firmicutes and belonged to the genera <i>Bacillus, Brevibacillus, Burkholderia, Paenibacillus</i> and <i>Variovorax.</i> The largest microbial diversities were found in soil samples from plots that had undergone natural reforestation or had been reforested by broadcasting or mechanical sowing of a mixture of seeds from timber and non-timber species along with leguminous cover plants.</p></div>","PeriodicalId":805,"journal":{"name":"Trees","volume":"39 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142976632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Mind the Data Gap: Using a Multi-Measurement Synthesis for Identifying the Challenges and Opportunities in Studying Plant Drought Response and Recovery.","authors":"Jean V Wilkening, Todd E Dawson, Sally E Thompson","doi":"10.1111/pce.15349","DOIUrl":"https://doi.org/10.1111/pce.15349","url":null,"abstract":"<p><p>Understanding and predicting plant water dynamics during and after water stress is increasingly important but challenging because the high-dimensional nature of the soil-plant-atmosphere system makes it difficult to identify mechanisms and constrain behaviour. Datasets that capture hydrological, physiological and meteorological variation during changing water availability are relatively rare but offer a potentially valuable resource to constrain plant water dynamics. This study reports on a drydown and re-wetting experiment of potted Populus trichocarpa, which intensively characterised plant water fluxes, water status and water sources. We synthesised the data qualitatively to assess the ability to better identify possible mechanisms and quantitatively, using information theory metrics, to measure the value of different measurements in constraining plant water fluxes and water status. Transpiration rates declined during the drydown and then showed a delayed and partial recovery following rewatering. After rewatering, plant water potentials also became decoupled from transpiration rates and the canopies experienced significant yellowing and leaf loss. Hormonal mechanisms were identified as a likely driver, demonstrating a mechanism with sustained impacts on plant water fluxes in the absence of xylem hydraulic damage. Quantitatively, the constraints offered by different measurements varied with the dynamic of interest, and temporally, with behaviour during recovery more difficult to constrain than during water stress. The study provides a uniquely diverse dataset offering insight into mechanisms of plant water stress response and approaches for studying these responses.</p>","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142982063","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}
Qingfang Wang, Chaofeng Qi, Linxia Wang, Min Li, Yahong Niu, Noor Muhammad, Mengjun Liu, Zhiguo Liu, Lixin Wang
{"title":"ZjMAPKK4 Interacted With ZjNAC78 Regulates Cold Tolerance Response in Jujube.","authors":"Qingfang Wang, Chaofeng Qi, Linxia Wang, Min Li, Yahong Niu, Noor Muhammad, Mengjun Liu, Zhiguo Liu, Lixin Wang","doi":"10.1111/pce.15381","DOIUrl":"https://doi.org/10.1111/pce.15381","url":null,"abstract":"<p><p>Jujube (Ziziphus ujuba Mill.) holds great importance as a fruit tree in China, with strong tolerance to drought and saline stress, but its growth is limited by vulnerability to cold stress. Consequently, the role of MAPK cascades in mediating jujube cold stress response remains unclear, with the specific function of ZjMAPKK4 in this context yet to be fully elucidated. Thus, in the current study, it was found that ZjMAPKK4 was significantly upregulated compared with other ZjMAPK cascade genes after cold treatment. Heterologous transformation of ZjMAPKK4 in Arabidopsis, VIGS-induced ZjMAPKK4 transiently silencing and overexpression of ZjMAPKK4 in jujube callus assays demonstrated that ZjMAPKK4 positively regulated the cold resistance of jujube. Furthermore, to elucidate the molecular regulation mechanism behind ZjMAPKK4 under cold stress, 25 key DEGs were screened out by transcriptome analysis. Yeast screening cDNA library, yeast two-hybrid, LCA and Co-IP analysis showed ZjMAPKK4 interacted with ZjNAC78 and VIGS-induced ZjNAC78 silenced sour jujube plants showed cold sensitivity and the expression level of cold response genes were downregulated after cold stress. All the results demonstrated that ZjMAPKK4 could interact with ZjNAC78 to regulate the downstream ZjICE-ZjCBF genes to regulate the cold tolerance of jujube.</p>","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142982067","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}
Juri A Felix, Philip C Stevenson, Nadia Barsoum, Julia Koricheva
{"title":"Stand Diversity Does Not Mitigate Increased Herbivory on Climate-Matched Oaks in an Assisted Migration Experiment.","authors":"Juri A Felix, Philip C Stevenson, Nadia Barsoum, Julia Koricheva","doi":"10.1111/pce.15383","DOIUrl":"https://doi.org/10.1111/pce.15383","url":null,"abstract":"<p><p>Assisted migration is a tree-planting method where tree species or populations are translocated with the aim of establishing more climate-resilient forests. However, this might potentially increase the susceptibility of translocated trees to herbivory. Stand diversification through planting trees in species or genotypic mixtures may reduce the amount of damage by insect pests, but its effectiveness in mitigation of excess herbivory on climate-matched trees has seldom been explored. Using the Climate Match Experiment which manipulates both tree climatic provenance and stand diversity, we compared growth, insect herbivory and leaf traits of pedunculate oaks (Quercus robur) of local and Italian provenances in monocultures, provenance mixtures or species mixtures. Additionally, we investigated whether tree apparency and light availability cause variation in leaf traits and herbivory and tested whether these factors were influenced by stand diversity. We found that Italian oaks were subject to greater herbivore damage than those of local English provenance regardless of stand diversity and that insect herbivory in Italian oaks was higher on more apparent trees. Italian oaks also had lower concentrations of hydrolysable tannins than English oaks, but tannin concentrations were poor predictors of herbivory. Additionally, we show that leaf trait variation is strongly associated with differences in light availability.</p>","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142976739","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}
TreesPub Date : 2025-01-13DOI: 10.1007/s00468-025-02600-6
Youying Mu, Peijian Shi, Jinfeng Wang, Weihao Yao, Lei Chen, Dirk Hölscher, Karl J. Niklas
{"title":"Testing the relationship among tepal area, length, and width using four Magnolia species","authors":"Youying Mu, Peijian Shi, Jinfeng Wang, Weihao Yao, Lei Chen, Dirk Hölscher, Karl J. Niklas","doi":"10.1007/s00468-025-02600-6","DOIUrl":"10.1007/s00468-025-02600-6","url":null,"abstract":"<div><h3>Key message</h3><p>The Montgomery equation, which assumes a proportional relationship between the tepal area and the product of the tepal length and width, is validated using data drawn from four <i>Magnolia</i> species.</p><h3>Abstract</h3><p>An important metric of floral non-reproductive size is individual petal or tepal area (<i>A</i>). The Montgomery equation (ME) estimates <i>A</i> by assuming a proportional relationship between <i>A</i> and the product of petal or tepal length (<i>L</i>) and width (<i>W</i>), i.e., <span>(A propto LW)</span>, whereas the power-law equation (PLE) assumes the allometric relationship <span>(A propto left( {LW} right)^{{{upalpha }_{1} ne 1}})</span>. If <i>W/L</i> has a small variation, four relationships are expected to hold true, i.e., <span>(A propto L^{2})</span>, <span>(A propto L^{{{upalpha }_{2} }})</span>, <span>(A propto W^{2})</span>, and <span>(A propto W^{{{upalpha }_{3} }})</span>, where α<sub>1</sub>, α<sub>2</sub>, and α<sub>3</sub> are scaling exponents to be estimated. To assess the validity of these six formulae, 2031 the petal-like tepals of 250 flowers from four <i>Magnolia</i> species were measured. The root-mean-square error (RMSE) was used to determine the goodness of fit of each equation, and the percentage error (PE) was used to compare any two equations with the same predicator, i.e., <i>LW</i>, <i>L</i> and <i>W</i>. The ME was validated for calculating <i>A</i> at the species level and for the pooled data given that three of the four species had < 0.05 RMSEs and one had a < 0.07 RMSE. However, the PLE was more robust than the ME at the species level. For the pooled data, the ME and PLE had a negligible difference in RMSE values. These results show that the ME is a valid and non-destructive tool for measuring <i>A</i> for the <i>Magnolia</i> species examined in this study and likely holds true across other more diverse species.</p></div>","PeriodicalId":805,"journal":{"name":"Trees","volume":"39 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142963073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Daniele Paschoal, Laura Cazetta, João V O Mendes, Nathália C F Dias, Vitor Ometto, Esther Carrera, Mônica L Rossi, Juliana A Aricetti, Piotr Mieczkowski, Gabriel G Carvalho, Igor Cesarino, Simone F da Silva, Rafael V Ribeiro, Paulo J P L Teixeira, Eder M da Silva, Antonio Figueira
{"title":"Root Development of Tomato Plants Infected by the Cacao Pathogen Moniliophthora perniciosa Is Affected by Limited Sugar Availability.","authors":"Daniele Paschoal, Laura Cazetta, João V O Mendes, Nathália C F Dias, Vitor Ometto, Esther Carrera, Mônica L Rossi, Juliana A Aricetti, Piotr Mieczkowski, Gabriel G Carvalho, Igor Cesarino, Simone F da Silva, Rafael V Ribeiro, Paulo J P L Teixeira, Eder M da Silva, Antonio Figueira","doi":"10.1111/pce.15385","DOIUrl":"https://doi.org/10.1111/pce.15385","url":null,"abstract":"<p><p>Moniliophthora perniciosa is the causal agent of the witches' broom disease of cacao (Theobroma cacao), and it can infect the tomato (Solanum lycopersicum) 'Micro-Tom' (MT) cultivar. Typical symptoms of infection are stem swelling and axillary shoot outgrowth, whereas reduction in root biomass is another side effect. Using infected MT, we investigated whether impaired root growth derives from hormonal imbalance or sink competition. Intense stem swelling coincided with a reduction in root biomass, predominantly affecting lateral roots. RNA-seq analyses of root samples identified only a few differentially expressed genes involved in hormone metabolism, and root hormone levels were not expressively altered. Inoculation of the auxin highly-sensitive entire mutant genotype maintained the impaired root phenotype; in contrast, the low-cytokinin MT transgenic line overexpressing CYTOKININ OXIDASE-2 (35S::AtCKX2) with fewer symptoms did not exhibit root growth impairment. Genes involved in cell wall, carbohydrate, and amino acid metabolism were downregulated, accompanied by lower levels of carbohydrate and amino acid in roots, suggesting a reduction in metabolite availability. <sup>13</sup>CO<sub>2</sub> was supplied to MT plants, and less <sup>13</sup>C was detected in the roots of infected MT but not in those of 35S::AtCKX2 line plants, suggesting that cytokinin-mediated sugar sink establishment at the infection site may contribute to impaired root growth. Exogenous sucrose application to roots of infected MT plants partially restored root growth. We propose that the impairment of lateral root development is likely attributed to disrupted sugar signalling and photoassimilate supply by establishing a strong sugar sink at the infected stem.</p>","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142976734","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}
Sahil V Pawar, Sujay M Paranjape, Grace K Kalowsky, Michelle Peiffer, Nate McCartney, Jared G Ali, Gary W Felton
{"title":"Tomato Defenses Under Stress: The Impact of Salinity on Direct Defenses Against Insect Herbivores.","authors":"Sahil V Pawar, Sujay M Paranjape, Grace K Kalowsky, Michelle Peiffer, Nate McCartney, Jared G Ali, Gary W Felton","doi":"10.1111/pce.15353","DOIUrl":"https://doi.org/10.1111/pce.15353","url":null,"abstract":"<p><p>Abiotic stressors, such as salt stress, can reduce crop productivity, and when combined with biotic pressures, such as insect herbivory, can exacerbate yield losses. However, salinity-induced changes to plant quality and defenses can in turn affect insect herbivores feeding on plants. This study investigates how salinity stress in tomato plants (Solanum Lycopersicum cv. Better Boy) impacts the behavior and performance of a devastating insect pest, the tomato fruitworm caterpillar (Helicoverpa zea). Through choice assays and performance experiments, we demonstrate that salt-stressed tomato plants are poor hosts for H. zea, negatively affecting caterpillar feeding preferences and growth rates. While changes in plant nutritional quality were observed, the primary factor influencing insect performance appears to be direct ionic toxicity, which significantly impairs multiple life history parameters of H. zea including survival, pupation, adult emergence, and fecundity. Plant defense responses show complex interactions between salt stress and herbivory, with two proteinase inhibitor genes - PIN2 and AspPI, showing a higher induced response to insect herbivory under salt conditions. However, plant defenses do not seem to be the main driver of reduced caterpillar performance on salt-treated plants. Furthermore, we report reduced oviposition by H. zea moths on salt-treated plants, which was correlated with altered volatile emissions. Our findings reveal that H. zea exhibits optimal host selection behaviours for both larval feeding and adult oviposition decisions, which likely contribute to its success as an agricultural pest. This research provides insights into the complex interactions between abiotic stress, plant physiology, and insect behaviour, with potential implications for pest management strategies in saline agricultural environments.</p>","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142976743","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}
Xue Li, Yan Wang, Chao Zhang, Jie Lu, Hongying Sun, Shuang Liu, Jiqi Li, Zhihong Zhang
{"title":"FvPHR1 Improves the Quality of Woodland Strawberry Fruit by Up-Regulating the Expression of FvPHT1;7 and FvSWEET9.","authors":"Xue Li, Yan Wang, Chao Zhang, Jie Lu, Hongying Sun, Shuang Liu, Jiqi Li, Zhihong Zhang","doi":"10.1111/pce.15378","DOIUrl":"https://doi.org/10.1111/pce.15378","url":null,"abstract":"<p><p>Phosphorus (P) is vital for plant growth, and continuous P fertiliser application is necessary to increase yield and quality, but it can cause environmental pollution. Plants maintain a steady phosphate (Pi) supply through complex signalling pathways. Phosphate starvation response 1 (PHR1), a key regulator of Pi starvation signals in plants, enables plants to maintain a sufficient Pi level. However, the role of PHR1 in fruit quality remains unclear. In this study, we determined the function of PHR1 in Fragaria vesca (FvPHR1) by overexpressing the FvPHR1 gene. We identified and validated two downstream genes of FvPHR1 by investigating plant phenotypes and analysing RNA-Seq data. FvPHR1 directly enhanced the expression of phosphate transporter 1;7 (FvPHT1;7), increasing Pi uptake and improving photosynthesis efficiency. Additionally, FvPHR1 upregulated the expression of sugar will eventually be exported transporter 9 (FvSWEET9), which encodes a sugar transporter that facilitates sugar transport from leaves to fruit. FvPHR1 can enhance photosynthetic products in a source via the phosphate signalling pathway and facilitate sugar transport to a sink through FvSWEET9. FvPHR1 plays a complicated role in improving fruit quality, providing a molecular foundation for developing strawberry cultivars with highly efficient Pi utilisation processes and high sugar content.</p>","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142976726","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}
Lena Herzig, Kora Uellendahl, Yaron Malkowsky, Lukas Schreiber, Paul Grünhofer
{"title":"In a Different Light: Irradiation-Induced Cuticular Wax Accumulation Fails to Reduce Cuticular Transpiration.","authors":"Lena Herzig, Kora Uellendahl, Yaron Malkowsky, Lukas Schreiber, Paul Grünhofer","doi":"10.1111/pce.15376","DOIUrl":"https://doi.org/10.1111/pce.15376","url":null,"abstract":"<p><p>The cuticle, an extracellular hydrophobic layer impregnated with waxy lipids, serves as the primary interface between plant leaves and their environment and is thus subject to external cues. A previous study on poplar leaves revealed that environmental conditions outdoors promoted the deposition of about 10-fold more cuticular wax compared to the highly artificial climate of a growth chamber. Given that light was the most significant variable distinguishing the two locations, we hypothesized that the quantity of light might serve as a key driver of foliar wax accumulation. Thus, this study aimed to isolate the factor of light quantity (photosynthetic photon flux density [PPFD]) from other environmental stimuli (such as relative humidity and ambient temperature) and explore its impact on cuticular wax deposition and subsequent rates of residual foliar transpiration in different species. Analytical investigations revealed a significant increase in cuticular wax amount with increasing PPFD (between 50 and 1200 µmol m<sup>-2</sup> s<sup>-1</sup>) in both monocotyledonous (maize and barley) and dicotyledonous (tomato and bean) crop species, without altering the relative lipid composition. Despite the increased wax coverages, rates of foliar water loss did not decrease, further confirming that the residual (cuticular) transpiration is independent of the cuticular wax amount.</p>","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142976731","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}