AoB Plants最新文献

{"title":"The links between wood traits and species demography change during tree development in a lowland tropical rainforest","authors":"Andrés González-Melo, Juan Manuel Posada, Jacques Beauchêne, Romain Lehnebach, Sébastian Levionnois, Géraldine Derroire, Bruno Clair","doi":"10.1093/aobpla/plad090","DOIUrl":"https://doi.org/10.1093/aobpla/plad090","url":null,"abstract":"One foundational assumption of trait-based ecology is that traits can predict species demography. However, the links between traits and demographic rates are, in general, not as strong as expected. These weak associations may be due to the use of traits that are distantly related to performance, and/or the lack of consideration of size-related variations in both traits and demographic rates. Here, we examined how wood traits were related to demographic rates in 19 tree species from a lowland forest in eastern Amazonia. We measured eleven wood traits (i.e., structural, anatomical and chemical traits) in sapling, juvenile and adult wood; and related them to growth and mortality rates at different ontogenetic stages. The links between wood traits and demographic rates changed during tree development. At the sapling stage, relative growth rates (RGR) were negatively related to wood specific gravity (WSG) and total parenchyma fractions, while mortality rates (MR) decreased with radial parenchyma fractions, but increased with vessel lumen area (VA). Juvenile RGR were unrelated to wood traits, whereas juvenile MR were negatively related to WSG and axial parenchyma fractions. At the adult stage, RGR scaled with VA and wood potassium concentrations. Adult MR were not predicted by any trait. Overall, the strength of the trait-demography associations decreased at later ontogenetic stages. Our results indicate that the associations between traits and demographic rates can change as trees age. Also, wood chemical or anatomical traits may be better predictors of growth and mortality rates than WSG. Our findings are important to expand our knowledge on tree life-history variations and community dynamics in tropical forests, by broadening our understanding on the links between wood traits and demography during tree development.","PeriodicalId":48955,"journal":{"name":"AoB Plants","volume":"30 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139053158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Transcriptional survey of abiotic stress response in maize (Zea mays L.) in the level of gene co-expression network and differential gene correlation analysis","authors":"Leyla Nazari, Z. Zinati","doi":"10.1093/aobpla/plad087","DOIUrl":"https://doi.org/10.1093/aobpla/plad087","url":null,"abstract":"\u0000 Maize may be exposed to several abiotic stresses in the field. Therefore, identifying the tolerance mechanisms of naturally field stress is mandatory. Gene expression data of maize upon abiotic stress were collected, and 560 differentially expressed genes (DEGs) were identified through meta-analysis. The most significant gene ontology terms in up-regulated genes were “response to abiotic stress” and “chitinase activity”. “Phosphorelay signal transduction system” was the most significant enriched biological process in down-regulated DEGs. The co-expression analysis unveiled seven modules of DEGs, with a notable positive correlation between the modules and abiotic stress. Furthermore, the statistical significance was strikingly high for the turquoise, green, and yellow modules. The turquoise group played a central role in orchestrating crucial adaptations in metabolic and stress response pathways in maize when exposed to abiotic stress. Within three up-regulated modules, Zm.7361.1.A1_at, Zm.10386.1.A1_a_at, and Zm.10151.1.A1_at emerged as hub genes. These genes might introduce novel candidates implicated in stress tolerance mechanisms, warranting further comprehensive investigation and research. In parallel, the R package glmnet was applied to fit a logistic LASSO regression model on the DEGs profile to select candidate genes associated with abiotic responses in maize. The identified hub genes and LASSO regression genes were validated on an independent microarray dataset. Additionally, Differential Gene Correlation Analysis (DGCA) was performed on LASSO and hub genes to investigate the gene-gene regulatory relationship. The p-value of DGCA of 16 pairwise gene comparisons was lower than 0.01, indicating a gene-gene significant change in correlation between control and abiotic stress. Integrated WGCNA and logistic LASSO analysis revealed Zm.11185.1.S1_at, Zm.2331.1.S1_x_at, and Zm.17003.1.S1_at. Notably, these three genes were identified in the 16 gene-pair comparisons. This finding highlights the notable significance of these genes in the abiotic stress response. Additional research into maize stress tolerance may focus on these three genes.","PeriodicalId":48955,"journal":{"name":"AoB Plants","volume":"10 34","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138943877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Molecular and morphological evidence of hybridization between two dimorphic sympatric species of Fuchsia (Onagraceae)","authors":"Cinthya Indira Cervantes-Díaz, Violeta Patiño-Conde, Antonio González-Rodríguez, Mauricio Quesada-Avendaño, Eduardo Cuevas","doi":"10.1093/aobpla/plad089","DOIUrl":"https://doi.org/10.1093/aobpla/plad089","url":null,"abstract":"\u0000 Hybridization is commonly reported in angiosperms, generally based on morphology, and in few cases confirmed by molecular markers. Fuchsia has a long tradition on ornamental cultivars with different hybrids produced by artificial crosses, so natural hybridization between sympatric Fuchsia species could be common.\u0000 Natural hybridization between F. microphylla and F. thymifolia was tested using six newly developed microsatellites for F. microphylla in addition to other molecular markers with codominant and maternal inheritance. Geometric morphometrics of leaves and floral structures were also used to identify putative hybrids.\u0000 Hybrids showed a different degree of genetic admixture between both parental species. Chloroplast DNA (cpDNA) sequences indicated that hybridization occurs in both directions, in fact, some of the hybrids showed new haplotypes for cpDNA and ITS (Internal Transcriber Spacer of nuclear ribosomal RNA genes) sequences. The morphology of hybrid individuals varied between the two parental species, but they could be better identified by their leaves and floral tube.\u0000 Our study is the first to confirm the hybridization in natural populations of Fuchsia species and suggests that hybridization has probably occurred repeatedly throughout the entire distribution of the species. Phylogeographic analysis of both species will be essential to understand the impact of hybridization throughout their complete distribution.","PeriodicalId":48955,"journal":{"name":"AoB Plants","volume":"30 4","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138952819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"“United we stand, divided we fall”: Intertwining as evidence of joint actions in pea plants","authors":"Bianca Bonato, Qiuran Wang, Silvia Guerra, Valentina Simonetti, Maria Bulgheroni, Silvia Quaggiotti, Benedetto Ruperti, Umberto Castiello","doi":"10.1093/aobpla/plad088","DOIUrl":"https://doi.org/10.1093/aobpla/plad088","url":null,"abstract":"In life, it is common for almost every kind of organism to interact with one another. In the human realm, such interactions are at the basis of joint actions, when two or more agents syntonise their actions to achieve a common goal. Shared intentionality is the theoretical construct referring to the suite of abilities that enable such coordinated and collaborative interactions. Shared intentionality is the theoretical construct referring to the suite of abilities that enable such coordinated and collaborative interactions. While shared intentionality has become an important concept in research on social cognition, there is controversy surrounding its evolutionary origins. An aspect still unexplored but promising to bring new insights into this open debate is the study of aneural organisms. To fill this gap, here we investigate whether climbing plants can act jointly to achieve a common goal, i.e., reaching the light. We examined Pisum Sativum plants growing intertwined when there is a need to climb but a potential support is not present in the environment. Three-dimensional kinematic analysis of their movement revealed a coordinated and complementary behaviour. They tend to coordinate their movement in time and space to achieve a joint climbing. By deliberately extending the context in which a joint action takes place, we pay tribute to the complex nature of this social phenomenon. The next challenge for the field of joint action is to generate a perspective that links coordination mechanisms to an evolutionary framework across taxa.","PeriodicalId":48955,"journal":{"name":"AoB Plants","volume":"8 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138823946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Determining tolerant tomato genotypes to salt stress according to physiological and morphological manner","authors":"Peyman Eynizadeh, Seid Zabihallah Ravari, Mohammad Moradi, Ali Dehghani, Hamid Dehghani","doi":"10.1093/aobpla/plad037","DOIUrl":"https://doi.org/10.1093/aobpla/plad037","url":null,"abstract":"The tomato (Solanum lycopersicum L.) is an annual vegetable cultivated all over the world. It faces biotic and abiotic stresses, such as salinity, in arid and semiarid regions. Investigating the relationship between physiological and economic traits, such as fruit yield, under stress conditions is necessary to identify tolerant genotypes. This study was conducted to identify tolerant tomato families according to the relationship between several important physiological, morphological and phenological traits. Twenty S3 families were cultivated in a factorial experiment (factor1: families and factor2: normal conditions and salinity stress) based on a randomized complete block design with three replications in 2019. Twenty physiological, agronomic and fruit-quality-related traits were investigated. Analysis of variance was used to prove the existing effective genetic diversity. Genetic diversity and the relationships between traits were graphically shown using heatmap clustering. Finally, genetic parameters, such as Pearson’s correlation, trait stability index and heritability were used to calculate the mathematical value of families using the Modified Analytical Hierarchy Process. Families exhibited different behaviours under normal and stress conditions. The tolerant families responded physiologically to the salt stress. Therefore, they reduced both cell membrane degradation and photosynthesis disruption by increasing proline, lycopene, carotenoid and sugar content. Therefore, fewer reductions in morphological traits were observed in these families. The most important traits based on the selection strategy were lycopene content, K+/Na+ ratio, days to flowering and biological yield. In addition, three families, H4/T/30/1, H1/T/12/5 and H1/T/47/4, were selected as the most suitable alternatives to construct the breeding population of the next generation.","PeriodicalId":48955,"journal":{"name":"AoB Plants","volume":"9 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138575289","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study of the genetic variability of durum wheat (Triticum durum Desf.) in the face of combined stress: water and heat","authors":"Latifa Chaouachi, Miriam Marín-Sanz, Francisco Barro, Chahine Karmous","doi":"10.1093/aobpla/plad085","DOIUrl":"https://doi.org/10.1093/aobpla/plad085","url":null,"abstract":"The devastating effects and extent of abiotic stress on cereal production continue to increase globally, affecting food security in several countries including Tunisia. Heat waves and the scarcity of rainfall strongly affect durum wheat yields. The present study aims to screen for tolerance to combined water and heat stresses in durum wheat at the juvenile stage. Three combined treatments were tested, namely: T0 (100% field capacity (FC) at 24°C), T1 (50% FC at 30°C), and T2 (25% FC at 35°C). The screening was carried out based on morphological, physiological, and biochemical criteria. The results showed that the combined stress significantly affects all the measured parameters. The relative water content (RWC) decreased by 37.6% under T1 compared to T0. Quantum yield (Fv/m) and photosynthetic efficiency (Fv/0) decreased under severe combined stress (T2) by 37.15% and 37.22%, respectively. Under T2 stress, leaf temperature increased by 63.7%. A significant increase in osmo-protective solutes was also observed, including proline, which increased by 154.6% under T2. Correlation analyses of the combination of water and heat stress confirm that the traits RWC, chlorophyll b content (Chlb), Fv/m, proline content (PC), Fv/0, and leaf temperature (LT), can be used as reliable screening criteria for the two stresses combined. The principal component analysis highlighted that Aouija tolerates the two levels of stresses studied, while the genotypes Karim and Hmira are the most sensitive. The results show that the tolerance of durum wheat to combined water and heat stress involves several adaptation mechanisms proportional to the stress intensity.","PeriodicalId":48955,"journal":{"name":"AoB Plants","volume":"21 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138561511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The <i>SmERF1b-like</i> regulates tanshinone biosynthesis in <i>Salvia miltiorrhiza</i> hairy root.","authors":"Dan Li, Yu Liu, Guoliang Chen, Yan Yan, Zhenqing Bai","doi":"10.1093/aobpla/plad086","DOIUrl":"10.1093/aobpla/plad086","url":null,"abstract":"<p><p>The ethylene response factor family genes are involved in the regulation of secondary metabolism in <i>Salvia miltiorrhiza</i>, but the mechanism underlying this regulation remains elusive. In the present study, based on the cDNA library of <i>S. miltiorrhiza</i>, an <i>AP2/ERF</i> gene was cloned and named <i>SmERF1b-like</i>. This gene exhibited a significant response to exogenous ethylene supply, such that ethylene remarkably upregulated <i>SmERF1b-like</i> expression levels in the leaves of <i>S. miltiorrhiza</i>. Subcellular localization showed that <i>SmERF1b-like</i> is located in the nucleus. Furthermore, <i>SmERF1b-like</i> showed a binding affinity with a GCC-box motif in the promoter region of genes associated with tanshinone biosynthesis in <i>S. miltiorrhiza</i>. Overexpression of <i>SmERF1b-like</i> in hairy roots of <i>S. miltiorrhiza</i> substantially upregulated <i>SmCPS1</i> and <i>SmKSL1</i> expression levels, resulting in increased biosynthesis of tanshinone I and cryptotanshinone contents. This finding provides valuable theoretical support for the utilization of a plant genetic engineering strategy to enhance <i>S. miltiorrhiza</i> resources.</p>","PeriodicalId":48955,"journal":{"name":"AoB Plants","volume":"16 1","pages":"plad086"},"PeriodicalIF":2.9,"publicationDate":"2023-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10799320/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139514497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Transcriptome-based network analysis of cell cycle-related genes in response to blue and red light in maize","authors":"Tiedong Liu, Xiwen Zhang, Shengqun Liu","doi":"10.1093/aobpla/plad079","DOIUrl":"https://doi.org/10.1093/aobpla/plad079","url":null,"abstract":"Abstract In maize, blue and red light are key environmental factors regulating cell-cycle progression. We used transcriptomics to investigate and compare differential gene expression under the four light conditions: red light, blue light, red converted to blue and blue converted to red. A total of 23 differentially expressed genes were identified. The gene–gene interaction analysis indicated a significant interaction between four unidentified genes, 100191551, pco143873, 100284747 and pco060490, and cell-cycle-related genes. Using multiple sequence alignment analysis and protein structure comparisons, we show here that these four unidentified genes were characterized as ALP1-like, ALP1, cyclin P1-1 and AEBP2, respectively. By constructing a protein–protein interaction network, we inferred that 100191551 and pco143873 are potentially regulated to avoid DNA damage by abiotic stress response factors in the cell cycle. The gene 100284747 regulates the cell cycle in response to phosphate starvation signalling. The gene pco060490 potentially negatively regulates the cell cycle through the mediation of Histone H3 and CYCD6 in response to red light. In conclusion, the cell-cycle-related genes are sensitive to blue and red light, and four novel functional genes may be involved in the cell cycle.","PeriodicalId":48955,"journal":{"name":"AoB Plants","volume":" 5","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138618250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sexual dimorphism and female advantage hypothesis in the gynomonoecious-gynodioecious Dianthus plumarius (Caryophyllaceae)","authors":"Sabrina S Gavini","doi":"10.1093/aobpla/plad084","DOIUrl":"https://doi.org/10.1093/aobpla/plad084","url":null,"abstract":"To explain the co-existence and maintenance of females along with hermaphrodite plants, the female-advantage hypothesis has been proposed where females should show greater fecundity compared to their conspecific hermaphrodites. On the other hand, greater attraction would be selected in the hermaphrodites to increase their male function, potentially leading to larger showier flowers, with more rewards. Here, I tested the sexual dimorphism trade-off hypothesis with the gynomonoecious-gynodioecious Dianthus plumarius (Caryophyllaceae), in the gardens of Bariloche (Patagonia, Argentina). I measured in female and hermaphrodite plants: flower size, nectar volume and concentration, flower lifespan, ovule production, seed number, seed set, and seed weight. Additionally, bagging and pollen supplementation experiments were carried out to evaluate pollen limitation, probability of apomixis, if spontaneous autogamy is possible, and to examine the importance of pollen origin. I found that hermaphrodite flowers are more attractive, with larger-sized flowers and higher nectar volume, whereas female flowers compensate with longer lifespan of stigmatic receptivity and more concentrated nectar. Despite ovule number was lower in female flowers, these showed higher seed-set, and produced more and heavier seeds than hermaphrodites under open pollination. No evidence of apomixis was found in females, but spontaneous autogamy may occur in hermaphrodites. Hand-pollination experiments showed first that both flower-types suffered pollen-limitation, but it was higher on hermaphrodite flowers. Finally, despite self-compatibility, pollen origin is important because hand self-pollination decreased seed weight. These findings provide strong evidence in support to the mechanisms and underlying conditions that would allow the co-existence and maintenance of female and hermaphrodite individuals within populations.","PeriodicalId":48955,"journal":{"name":"AoB Plants","volume":"34 8 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138516024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 physiological responses and identifying stress-tolerance of Akabare chili landraces to individual and combined drought and heat stresses","authors":"Damodar Poudyal, Bal Krishna Joshi, Rong Zhou, Carl-Otto Ottosen, Kishor Chandra Dahal","doi":"10.1093/aobpla/plad083","DOIUrl":"https://doi.org/10.1093/aobpla/plad083","url":null,"abstract":"Akabare chili (Capsicum annuum L.) contributes to Nepalese rural livelihoods but suffers from low productivity due to various abiotic stresses including drought and heat. This study aimed to assess the physiological responses of Akabare chili landraces to heat and drought stress, individually and together, and to identify stress-tolerant genotypes in the early vegetative stage. Selected eight Akabare chili landraces and chili variety ‘Jwala’ were subjected to control (30/22°C day/night) and heat stress (40/32°C) conditions with irrigation, and drought stress (30/22°C) and combined drought-heat stress conditions without irrigation for seven days, followed by a five-day recovery under control condition. Stress-tolerant landraces showed better performance compared to sensitive ones in terms of efficacy of PS II (Fv/Fm), transpiration rate (E), net photosynthetic rate (PN), stomatal conductance (gs), leaf temperature depression (LTD), water use efficiency (WUE), and the ratio of stomata pore area to stomata area (PASA) under stress conditions, resulting in improved biomass. Although all genotypes performed statistically similar under control conditions, their responses Fv/Fm, PN, E, gs, and WUE were significantly reduced under thermal stress, further reduced under drought stress, and severely declined under the combination of both. Total biomass exhibited a 57.48% reduction due to combined stress, followed by drought (37.8%) and heat (21.4%) compared to the control. Among the landraces, C44 showed the most significant gain in biomass (35%), followed by DKT77 (33.48%), while the lowest gain percentage was observed for C64C and PPR77 during the recovery phase (29%). The tolerant landraces also showed a higher percentage of leaf cooling, chlorophyll content, and leaf relative water content with fewer stomata but broader openings of pores. The study identifies potential stress-tolerant Akabare chili landraces and discusses the stress-tolerant physiological mechanisms to develop resilient crop varieties in changing climates.","PeriodicalId":48955,"journal":{"name":"AoB Plants","volume":"154 3 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138516043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}