Plant Biology最新文献_第2页

Bark-associated yeasts and their potential role as tree carbon sink at the treeline of the southern Andes. 树皮相关酵母及其作为南安第斯山脉林木线树木碳汇的潜在作用。

IF 3.4 3区生物学

Plant Biology Pub Date : 2026-10-01 Epub Date: 2026-07-12 DOI: 10.1111/plb.70251

F I Piper, C Oporto, C Reyes-Bahamonde, P Moreno-Meynard, R F Nespolo, L Saona, F A Cubillos, A Fajardo

{"title":"Bark-associated yeasts and their potential role as tree carbon sink at the treeline of the southern Andes.","authors":"F I Piper, C Oporto, C Reyes-Bahamonde, P Moreno-Meynard, R F Nespolo, L Saona, F A Cubillos, A Fajardo","doi":"10.1111/plb.70251","DOIUrl":"10.1111/plb.70251","url":null,"abstract":"The upper elevation of the tree life form (treeline) is explained by temperature limitations in the carbon (C) investment in biomass (the growth limitation hypothesis, GLH). The GLH predicts that tissue concentrations of non-structural carbohydrates (NSC) increase with elevation. This prediction has received mixed support in deciduous species. In addition, other potentially relevant C sources (e.g., inner bark) and sinks (e.g., bark microbiome) have not been considered. We assessed the year-round NSC concentrations in the inner bark, roots and branches of Nothofagus pumilio at the treeline and 200 m below it in the southern Andes of Chile. We furthermore quantified the abundance of bark-associated yeasts and evaluated the relative importance of inner bark's starch and soluble sugars (SS), tree size and seasonality as predictors of the yeast abundance. NSC, starch and SS concentrations decreased in springtime in both elevations. In late spring, NSC, starch and SS concentrations were significantly lower at the treeline than below the treeline for all organs and most so for the inner bark. Bark's starch and SS concentrations were the best predictors of yeast abundance. At the treeline, yeast abundance was highly predicted by the month, peaking in spring. We found support for C limitation in the treeline formation of N. pumilio in late spring, when C reserves were at their minimum concentrations and yeasts' abundance was at their maximum. Given that yeast abundance was mostly predicted by starch and SS concentrations, our results suggest that yeasts act as a C sink, particularly at the treeline.","PeriodicalId":220,"journal":{"name":"Plant Biology","volume":" ","pages":"2054-2064"},"PeriodicalIF":3.4,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13586642/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148429506","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}

引用次数: 0

Disentangling the phylogeny of bladderworts (Utricularia sect. Utricularia: Lentibulariaceae) based on plastid and nuclear data. 基于质体和核资料的膀胱植物系统发育研究。

IF 3.4 3区生物学

Plant Biology Pub Date : 2026-10-01 Epub Date: 2026-07-07 DOI: 10.1111/plb.70256

G C Seber, S R Silva, L Adamec, B J Płachno, V F O Miranda

{"title":"Disentangling the phylogeny of bladderworts (Utricularia sect. Utricularia: Lentibulariaceae) based on plastid and nuclear data.","authors":"G C Seber, S R Silva, L Adamec, B J Płachno, V F O Miranda","doi":"10.1111/plb.70256","DOIUrl":"10.1111/plb.70256","url":null,"abstract":"Utricularia sect. Utricularia L. comprises fixed or free-floating aquatic macrophytes with very similar vegetative and floral traits which make their taxonomic identification a challenging task. Moreover, several lines of evidence, including pollen malformation, chromosome rearrangements and the sterility of some species have led to a hypothesis of interspecific hybridization. In this study, we present phylogenetic hypotheses for 21 of the 37 known species for the section Utricularia. We sequenced nuclear genes LEAFY and RPB2 and the plastid intergenic spacer rpl20-rps12. Furthermore, we used previously published plastidial data for rbcL and matK, beyond the nuclear ribosomal internal transcribed spacer (ITS) region, to perform phylogenies using Bayesian inference, maximum likelihood, parsimony and coalescent-based methods based on individual markers, partitioned and combined nuclear and plastid DNA. In addition, we propose phylogenetic networks, which we use to investigate hybridization events. Our nuclear and plastid gene trees are generally congruent but disagree in places that were punctually discussed. Discordance between the trees from different DNA markers can be due to incomplete lineage sorting or can indicate possible occurrence of reticulate evolution, and our findings may suggest hybridization. Molecular analysis demonstrated the occurrence of five main clades in section Utricularia (named clades A, B, C, D and E), and it was possible to infer evolutionary histories for some morphological characters. Our phylogenetic inferences imply that Utricularia sect. Utricularia as currently circumscribed is paraphyletic, and that Utricularia olivacea should be segregated into a separate section to maintain the monophyly of the section.","PeriodicalId":220,"journal":{"name":"Plant Biology","volume":" ","pages":"2077-2093"},"PeriodicalIF":3.4,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148402986","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}

引用次数: 0

Lunar cycle gates Sphagnum riparium sensitivity to the geomagnetic field. 月球周期闸门的水泥石对地磁场的敏感性。

IF 3.4 3区生物学

Plant Biology Pub Date : 2026-10-01 Epub Date: 2026-07-13 DOI: 10.1111/plb.70255

V L Mironov

{"title":"Lunar cycle gates Sphagnum riparium sensitivity to the geomagnetic field.","authors":"V L Mironov","doi":"10.1111/plb.70255","DOIUrl":"10.1111/plb.70255","url":null,"abstract":"Despite the increasing body of knowledge concerning the influence of the lunar cycle on various components of the biosphere, how living organisms respond to environmental factors across this cycle remains unclear. Recent evidence that cryptochromes are involved in the perception of both magnetic fields and moonlight suggests a potential mechanistic link, whereby plant sensitivity to the geomagnetic field may vary with lunar phase. Here, we test the hypothesis that geomagnetic sensitivity of plant growth is modulated during the lunar cycle. Growth dynamics of Sphagnum riparium were analysed using a long-term field dataset obtained from Karelian mires (Russia). Monitoring was conducted at 2-day intervals over 10 full growing seasons, yielding 1795 growth rate estimates derived from measurements of 245860 shoots. Although no significant relationship between growth rate and the geomagnetic Kp index was detected across the full dataset, phase-resolved analysis revealed a different pattern. Near both the full moon and the new moon, the growth response to geomagnetic variations became significant and exhibited a characteristic flip-flop pattern, with a positive response preceding the lunar phase and a negative response immediately following it. These responses were confined to narrow time windows. The results support the hypothesis of lunar modulation of geomagnetic sensitivity in plants and demonstrate that this sensitivity is temporally gated within specific phases of the lunar cycle. The emergence of a half-lunar (~14.8-day) periodicity in geomagnetic response, absent in the growth rate itself, suggests that this mechanism may function as a regulatory layer synchronizing plant-environment interactions rather than directly controlling growth.","PeriodicalId":220,"journal":{"name":"Plant Biology","volume":" ","pages":"2132-2141"},"PeriodicalIF":3.4,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148434493","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}

引用次数: 0

Silicon dioxide nanoparticles mitigate cadmium sulfide phytotoxicity in spinach: a metabolomic and physiological investigation. 二氧化硅纳米颗粒减轻菠菜中硫化镉的植物毒性：代谢组学和生理学研究。

IF 3.4 3区生物学

Plant Biology Pub Date : 2026-10-01 Epub Date: 2026-07-13 DOI: 10.1111/plb.70259

H Ullah, Z Wang, Z Li, H Xu, S Cheng, Y Sheng

{"title":"Silicon dioxide nanoparticles mitigate cadmium sulfide phytotoxicity in spinach: a metabolomic and physiological investigation.","authors":"H Ullah, Z Wang, Z Li, H Xu, S Cheng, Y Sheng","doi":"10.1111/plb.70259","DOIUrl":"10.1111/plb.70259","url":null,"abstract":"The widespread application of cadmium sulfide (CdS) nanoparticles (NPs) in various fields inevitably leads to their release into the environment, where they can negatively affect plants and, consequently, pose risks to human health through the food chain. Over the past two decades, the increasing release of NPs into soils, resulting from production, consumption and waste disposal, has raised significant environmental concerns. Current research focuses on understanding NPs interactions with plants to enable sustainable agriculture. Therefore, the present study examines how CdS NPs affect spinach growth and whether silicon dioxide (SiO2) NPs can alleviate CdS NPs induced stress. Three-week-old spinach plants were treated for 4 weeks with either 1 mg/l CdS NPs alone or in co-exposure with three concentrations (1, 20 and 100 mg/l) of SiO2 NPs. The central methods applied included measuring metal content, transmission electron microscopy (TEM) for cellular uptake visualization, analysis of biochemical stress markers and a metabolomic analysis to identify altered metabolic pathways. Key results demonstrated that SiO2 NPs, particularly at 1 and 100 mg/l concentrations, significantly reduced Cd content by up to 40.72% and enhanced the uptake of essential nutrients (Zn, Co, Ca, Fe). TEM imaging confirmed reduced cellular internalization of CdS NPs. The treatment also induced a strong antioxidant response and increased chlorophyll content by up to 170.10%. Metabolomic analysis revealed significant alterations in metabolites (53-75%), primarily affecting pathways related to amino acids, carbohydrates, oxidative phosphorylation and sulphur metabolism. SiO2 NPs effectively detoxify CdS NPs in spinach through a dual mechanism: limiting cellular uptake and biochemically triggering a robust antioxidant and metabolic defence system. This study provides critical insights into the application of SiO2 NPs as a nano-enabled strategy to enhance crop safety in heavy metal-contaminated environments.","PeriodicalId":220,"journal":{"name":"Plant Biology","volume":" ","pages":"2013-2025"},"PeriodicalIF":3.4,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148429446","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}

引用次数: 0

Thermotolerance thresholds of the photosystem II increase with elevation in conifer species in the Spanish Pyrenees. 西班牙比利牛斯山针叶树光系统II的耐热阈值随海拔升高而增加。

IF 3.4 3区生物学

Plant Biology Pub Date : 2026-10-01 Epub Date: 2026-07-13 DOI: 10.1111/plb.70260

N Kunert, E Düsterhöft

{"title":"Thermotolerance thresholds of the photosystem II increase with elevation in conifer species in the Spanish Pyrenees.","authors":"N Kunert, E Düsterhöft","doi":"10.1111/plb.70260","DOIUrl":"10.1111/plb.70260","url":null,"abstract":"In vitro-measured photosystem II (PSII) thermotolerance, indicated by the temperature-dependent decline of the quantum use efficiency of PSII, has been broadly applied to evaluate plants' ability to deal with future climate warming. Nonetheless, deriving PSII thermotolerance thresholds, such as T5, T15 and T50, representing 5%, 15% and 50% temperature-dependent decline in quantum use efficiency, has rarely been tested against distributional ranges and associated environmental variables. Therefore, we evaluate the predictive power of these three PSII thermotolerance thresholds, obtained from seven temperate conifer species in the Spanish Pyrenees, in association with their respective distributional pattern in regard to altitude and accompanying environmental variables. Both T5 and T15 correlated with the mean altitudinal distribution, with species growing in higher elevations exhibiting higher PSII thermotolerance thresholds compared to species in the lowlands. The thresholds were negatively correlated with the mean annual temperature while displaying a positive correlation with the mean annual precipitation. No correlation was found between T50 and elevational as well as environmental gradients. Both T5 and T15 indicate an initial decline of the quantum use efficiency. We speculate that plants of greater altitudes, by being exposed to larger temperature fluctuations, have a greater need for higher PSII thermotolerance. As climate change-induced heat stress intensifies, high-altitude conifer species might be more resistant to increasing temperatures than previously thought.","PeriodicalId":220,"journal":{"name":"Plant Biology","volume":" ","pages":"2142-2146"},"PeriodicalIF":3.4,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13586631/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148429467","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}

引用次数: 0

Water-carbon coordination in Taxodium distichum but not T. ascendens under prolonged off-season submergence in the Three Gorges Reservoir riparian zone. 三峡库区长时间淡季淹没条件下，双叶紫杉（Taxodium distichum）的水碳协调性，而不包括上升紫杉（T. ascendam）。

IF 3.4 3区生物学

Plant Biology Pub Date : 2026-09-29 DOI: 10.1111/plb.70302

W Ren, X Liu, J Yao, J Liao

{"title":"Water-carbon coordination in Taxodium distichum but not T. ascendens under prolonged off-season submergence in the Three Gorges Reservoir riparian zone.","authors":"W Ren, X Liu, J Yao, J Liao","doi":"10.1111/plb.70302","DOIUrl":"https://doi.org/10.1111/plb.70302","url":null,"abstract":"Prolonged winter submergence induced by reservoir impoundment poses severe physiological challenges to riparian trees, yet post-submergence recovery dynamics remain poorly understood. In this study, we investigated hydraulic function, xylem anatomy and non-structural carbohydrate (NSC) dynamics in two congeneric species, Taxodium ascendens and T. distichum, following a winter impoundment in the Three Gorges Reservoir. During the initial post-submergence exposure phase, we comparatively analysed stem xylem micro-anatomy, percentage loss of conductivity (PLC) and NSC allocation across the xylem and phloem in branches collected from the flooded water-level fluctuation zone and the adjacent unflooded upland zone. T. ascendens exhibited reduced tracheid diameter and increased cell wall reinforcement, yet PLC remained elevated. This hydraulic impairment was associated with phloem starch retention, suggesting a possible tissue-level carbon allocation constraint; this association does not indicate that hydraulic impairment caused carbon retention. By contrast, T. distichum maintained stable xylem morphology and low PLC, with coordinated NSC depletion across the xylem and phloem. Trait-network analysis suggested that T. ascendens responses exhibited strong associations between PLC and carbon retention, whereas T. distichum was focused on micro-anatomical homeostasis. Prolonged counter-seasonal submergence was associated with distinct initial physiological patterns in congeneric flood-tolerant species. The elevated PLC of T. ascendens was associated with phloem starch retention, but this relationship does not establish a hydraulic constraint on carbon allocation. These observations document early-phase physiological differences and cannot predict long-term survival, recovery trajectories or interspecific competitive performance. Sequential seasonal sampling and field survival monitoring are required for further validation.","PeriodicalId":220,"journal":{"name":"Plant Biology","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2026-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149079106","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}

引用次数: 0

Floral intra-individual variation differs between morphs and is linked to pollen deposition in self-incompatible distylous plants. 在自交不亲和的二瓣花植物中，花的个体内变异与花粉沉积有关。

IF 3.4 3区生物学

Plant Biology Pub Date : 2026-09-25 DOI: 10.1111/plb.70299

R Trevizan, V Ferrero, F Telles, L Oliveira, L Melo, F W Amorim, P E Oliveira

{"title":"Floral intra-individual variation differs between morphs and is linked to pollen deposition in self-incompatible distylous plants.","authors":"R Trevizan, V Ferrero, F Telles, L Oliveira, L Melo, F W Amorim, P E Oliveira","doi":"10.1111/plb.70299","DOIUrl":"https://doi.org/10.1111/plb.70299","url":null,"abstract":"Flowers are expected to exhibit lower trait variability than vegetative traits, thereby enhancing precise pollination and reproductive success, especially in self-incompatible species that rely on cross-pollination. This is particularly important in distylous plants, which have two co-dependent flower morphs with reciprocal positioning of sexual structures (L- and S-morph). However, the influence of intra-individual floral variation on the reproductive process has often been neglected, even though this variation underlies selection for precise floral adjustment. This study investigated the intra-individual variation in floral traits across different morphs and populations of distylous plants with contrasting pollinator guilds (bees and hummingbirds), focusing on the implications of this variation for reproductive success and floral resource features. We showed intra-individual variation differences between morphs and populations in stigma length and stigma height, which may reflect distinct pollination pressure across populations. Contrastingly, the similar levels of variation are maintained across morphs, potentially facilitating effective pollen transfer within these self-incompatible distylous populations. Intra-individual variation in corolla length was positively associated with total pollen deposition, which was also morph-dependent (greater in L-morph flowers in the bee-pollinated population). However, intra-individual variation did not affect fruit set. Our results provide a novel perspective on the effect of intra-individual variation in the reproductive process of distylous plants, indicating that such variation might serve as a strategy to occupy a greater positional range accessed by distinct pollinators, which would increase the chances of cross-pollen deposition among flowers within individuals.","PeriodicalId":220,"journal":{"name":"Plant Biology","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2026-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149056741","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}

引用次数: 0

A dual pollination strategy combining perfume attraction and food deception in Galeandra blanchetii E.S. Rand (Orchidaceae). 香味吸引与食物欺骗相结合的双传粉策略。

IF 3.4 3区生物学

Plant Biology Pub Date : 2026-09-25 DOI: 10.1111/plb.70288

D M Camara, A W C Ferreira, A P S Caetano, A Domingos-Melo, S Albuquerque-Lima, P Milet-Pinheiro, I C Machado, E M Pessoa

{"title":"A dual pollination strategy combining perfume attraction and food deception in Galeandra blanchetii E.S. Rand (Orchidaceae).","authors":"D M Camara, A W C Ferreira, A P S Caetano, A Domingos-Melo, S Albuquerque-Lima, P Milet-Pinheiro, I C Machado, E M Pessoa","doi":"10.1111/plb.70288","DOIUrl":"https://doi.org/10.1111/plb.70288","url":null,"abstract":"The evolutionary origin of the perfume flower syndrome remains unclear. Orchids of the subtribe Catasetinae help elucidate the evolution of this syndrome, but knowledge gaps regarding the pollination biology of Galeandra hinder a full understanding of the process. This study addresses this gap by investigating G. blanchetii, an epiphytic Catasetinae species endemic to Brazil. We explored its floral and reproductive biology, including floral anatomy, scent characterization and pollinator mechanical fit, to clarify the role of floral signals in pollinator attraction. We found epidermal osmophores and unicellular glandular trichomes in the labellum, but no nectar production was detected. Floral scent comprised 34 compounds, with methyl salicylate and methyl benzoate as the most abundant constituents. Despite being self-compatible, G. blanchetii requires biotic vectors for reproduction. The flowers attracted both male and female bees; however, only some male Euglossini bees exhibited fragrance-collecting behaviour, whereas females were observed only searching for nectar. Pollinaria were removed only when bees entered the spur while searching for nectar, indicating that fragrance collection alone did not result in pollination. We conclude that G. blanchetii exhibits a dual pollination strategy combining perfume attraction and food deception. Floral fragrance provides a resource for male Euglossini bees, whereas melittophilous floral traits and the absence of nectar are consistent with food deception in floral visitors searching for nectar. This combination provides further insights into the diversity and evolution of pollination strategies within Galeandra and, more broadly, within Catasetinae.","PeriodicalId":220,"journal":{"name":"Plant Biology","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2026-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149056709","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}

引用次数: 0

Mechanism of cork spot formation: insights from integrated mineral, transcriptomic, metabolomic and hormone analyses. 软木斑形成的机制：从综合矿物，转录组学，代谢组学和激素分析的见解。

IF 3.4 3区生物学

Plant Biology Pub Date : 2026-09-24 DOI: 10.1111/plb.70298

Y Ge, G Guo, Z Xu, X Tang, C Liu, W Heng, B Jia, L Liu

{"title":"Mechanism of cork spot formation: insights from integrated mineral, transcriptomic, metabolomic and hormone analyses.","authors":"Y Ge, G Guo, Z Xu, X Tang, C Liu, W Heng, B Jia, L Liu","doi":"10.1111/plb.70298","DOIUrl":"https://doi.org/10.1111/plb.70298","url":null,"abstract":"Pear cork spot disorder severely impairs pear fruit quality and yield, resulting in substantial economic losses for producers. However, the causes and underlying mechanisms of pear cork spot disorder remain unclear. In this study, a comprehensive investigation of the characteristics associated with cork spot disorder was conducted. We collected samples of healthy fruits as well as fruits in the early and late stages of cork spot disorder. By means of microstructure observation, determination of element and hormone contents and transcriptomic and metabolomic analyses, we provided a comprehensive elucidation of the differences between cork spot fruits and healthy fruits. Scanning electron microscopy observations showed that cork spot disorder arises from fruit cell rupture and subsequent collapse. Trace element analysis revealed that the contents of several elements, including calcium and boron, are closely associated with cork spot formation. Transcriptomic profiling indicated that cork spot development is strongly linked to pathways related to substance metabolism and plant hormone signalling Comparative metabolomic analyses between healthy and diseased fruit demonstrated that cork spot formation is significantly correlated with the accumulation of compounds such as phenolic acids, flavonoids and terpenoids. Moreover, significant differences were detected in the levels of major plant hormones between cork spot and healthy fruit. Notably, exogenous application of salicylic acid significantly reduced the incidence of cork spot disorder. Collectively, these findings provide valuable insights into the mechanisms underlying cork spot disorder and establish a theoretical foundation for its effective prevention and management.","PeriodicalId":220,"journal":{"name":"Plant Biology","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2026-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149035917","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}

引用次数: 0

Lipidomics of orchid seeds: from development to storage. 兰花种子的脂质组学：从发育到储存。

IF 3.4 3区生物学

Plant Biology Pub Date : 2026-09-23 DOI: 10.1111/plb.70295

C C Custódio, N B Machado-Neto, L Colville, P T Seaton, H W Pritchard, T R Marks

{"title":"Lipidomics of orchid seeds: from development to storage.","authors":"C C Custódio, N B Machado-Neto, L Colville, P T Seaton, H W Pritchard, T R Marks","doi":"10.1111/plb.70295","DOIUrl":"https://doi.org/10.1111/plb.70295","url":null,"abstract":"Orchid seeds primarily contain lipid reserves, yet details of their deposition, in quantity and quality, remain unknown. Deposition begins as carbohydrates, which are eventually converted into fatty acids during seed development. This research aimed to dissect the pattern of lipid deposition in seeds of Dactylorhiza fuchsii and Disa uniflora, from pollination to seed storage, including at five stages of seed maturation, germination capacity and relationships among fatty acids (FAs). The capsules were harvested, cleaned and measured. Extracted seeds were analysed using differential scanning calorimetry (DSC), moisture content determinations, in vitro germination tests in three different media and seed viability. A portion of the seeds was dried to analyse lipid content and types via Gas Chromatography-Mass Spectrometry (GC-MS). While Dact. fuchsii seeds showed a high percentage of dry matter at the end of maturation, Disa uniflora had a lower one. Lipid accumulation profiles differed. The proportions of saturated and unsaturated FA varied, with Disa uniflora having more saturated FA than Dact. fuchsii. Seeds began to germinate before the midpoint of capsule maturation, and germination increased with maturation time in both species, with Disa uniflora seeds reaching full germination at capsule dehiscence. Conversely, Dact. fuchsii seeds did not germinate because the seed carapace may hinder germination. Nevertheless, at capsule maturity, seeds from both species were highly viable based on the tetrazolium test. Mature seeds of both species were desiccation-tolerant (4.5% RH) and could be stored dry at 5 °C for 3 months without loss of viability, suggesting the possibility of long-term seed banking for conservation.","PeriodicalId":220,"journal":{"name":"Plant Biology","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149029315","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}

引用次数: 0