The Plant Journal最新文献_第2页

Comprehensive analysis of imprinted genes in citrus endosperm and their contributions to seed development 柑橘胚乳印迹基因的综合分析及其对种子发育的贡献

IF 6.2 1区生物学

The Plant Journal Pub Date : 2025-06-25 DOI: 10.1111/tpj.70290

Jing-Jing He, Gang Hu, Ming-Yao Shen, Yan-Jie Fan, Xiao-Shu Shi, Xiao-Meng Wu, Wen-Wu Guo, Qiang-Ming Xia, Kai-Dong Xie

{"title":"Comprehensive analysis of imprinted genes in citrus endosperm and their contributions to seed development","authors":"Jing-Jing He, Gang Hu, Ming-Yao Shen, Yan-Jie Fan, Xiao-Shu Shi, Xiao-Meng Wu, Wen-Wu Guo, Qiang-Ming Xia, Kai-Dong Xie","doi":"10.1111/tpj.70290","DOIUrl":"https://doi.org/10.1111/tpj.70290","url":null,"abstract":"<div>\u0000 \u0000 Interploidy hybridization between diploid and tetraploid has been an important approach to develop triploid hybrids in horticultural plants including citrus for seedless breeding. However, dysregulation of imprinted genes can lead to the failure of endosperm cellularization, resulting in abortion of triploid embryos before seed maturity, thereby impeding the efficiency of triploid generation. The identification of imprinted genes is essential for comprehending the impact of imprinting on endosperm cellularization and mitigating embryo abortion in interploidy hybridization. Herein, a genome-wide search for imprinted genes in citrus was performed using RNA sequencing of the endosperm collected from two pairs of reciprocal crosses and totally 296 imprinted genes were identified. Among them, the paternally imprinted genes (PEGs) showed a higher inclination toward endosperm-specific expression compared to maternally imprinted genes (MEGs), with a few demonstrating consistent imprinting across three developmental stages of endosperm and displaying homology with counterparts found in other plant species. The analysis of transposable element (TE) enrichment and DNA methylation revealed a significant enrichment of mutator TEs with higher level of DNA methylation around maternal imprinted genes, highlighting their vital role for controlling the expression of MEGs. By overexpressing the endosperm-specific expressed PEGs in Arabidopsis, we observed that the transgenic lines of OE-CsPEG1 exhibited an increased frequency of seed abortion, which appeared to be correlated with delayed endosperm cellularization, resembling the observed phenotypes in 2x × 4x interploidy hybridizations. Our research provides evidence supporting the functional conservation of imprinted genes in plants, thereby identifying potential targets for genetic improvement in triploid breeding.\u0000 </div>","PeriodicalId":233,"journal":{"name":"The Plant Journal","volume":"122 6","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144482143","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}

引用次数: 0

Translational landscape provides insight into the molecular mechanism of heterosis in inter-subspecific hybrid rice 翻译景观为亚种间杂交水稻杂种优势的分子机制提供了新的视角

IF 6.2 1区生物学

The Plant Journal Pub Date : 2025-06-24 DOI: 10.1111/tpj.70297

Zengde Xi, Mengyao Wang, Fei Wang, Jianbo Wang

{"title":"Translational landscape provides insight into the molecular mechanism of heterosis in inter-subspecific hybrid rice","authors":"Zengde Xi, Mengyao Wang, Fei Wang, Jianbo Wang","doi":"10.1111/tpj.70297","DOIUrl":"https://doi.org/10.1111/tpj.70297","url":null,"abstract":"<div>\u0000 \u0000 Heterosis has been widely applied in crop breeding and has significantly improved grain yield worldwide. Many studies have attempted to elucidate heterosis from various perspectives; however, its genetic basis—especially at the translational level—remains elusive. In this study, we performed RNA-seq and ribosome profiling on the inter-subspecific hybrid rice ZY19 (Oryza sativa L. subsp. indica Kato × O. sativa L. subsp. japonica Kato) and its parental lines to examine genome-wide translational dynamics. Differential gene expression between the hybrid and its parents revealed a strong discordance between transcriptional and translational levels, and translational regulation appeared to buffer the transcriptional differences. Although additive and non-additive gene expression patterns shifted during translation, additive expression remained the predominant pattern at the translational level in the hybrid. Moreover, a high proportion of single-parent expression genes also exhibited additive expression. In the hybrid, allele-specific expression (ASE) was differentially regulated in transcription and translation. Notably, cis and trans-regulation tended to function independently in transcription, whereas they were more likely to act together in translation. Finally, we investigated the effects of various regulatory mechanisms and elements on translation and found that genes with more alternative splicing (AS) events had a lower translational efficiency (TE) than genes with fewer AS events. In addition, translation was repressed by the upstream open reading frames (uORFs), downstream open reading frames (dORFs), N6-methyladenosines (m6As) and microRNAs (miRNAs). Overall, our study provides new insights into the molecular mechanisms of heterosis in inter-subspecific hybrid rice.\u0000 </div>","PeriodicalId":233,"journal":{"name":"The Plant Journal","volume":"122 6","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144367606","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}

引用次数: 0

Confocal imaging of the cell cycle and cytokinin signaling during gynoecium development in Arabidopsis 拟南芥雌蕊发育过程中细胞周期和细胞分裂素信号的共聚焦成像

IF 6.2 1区生物学

The Plant Journal Pub Date : 2025-06-24 DOI: 10.1111/tpj.70299

Juan Ramos-Pulido, Stefan de Folter

{"title":"Confocal imaging of the cell cycle and cytokinin signaling during gynoecium development in Arabidopsis","authors":"Juan Ramos-Pulido, Stefan de Folter","doi":"10.1111/tpj.70299","DOIUrl":"https://doi.org/10.1111/tpj.70299","url":null,"abstract":"In angiosperms, the gynoecium is the female reproductive structure, whose function is to contain the ovules and promote their fertilization. In Arabidopsis, the gynoecium develops from a small primordium with meristematic properties to a complex structure with internal and external specialized tissues. Due to its anatomical and developmental complexity, it is challenging to study in vivo the developmental processes of the gynoecium. Although efforts have been made, there are still unanswered questions, especially those related to cell proliferation of internal tissues. Here, we use confocal imaging to study the cell cycle, the proliferation of internal tissues, and the relationship with cytokinin signaling. We observed that early gynoecium proliferation is complex and with a long cell cycle dynamics. Moreover, we observed a relationship between the region of highest proliferation and maximum cytokinin signaling, a rise in proliferation attributed to BAP treatment, ectopic tissue formation with cytokinin signaling, and alterations in the gynoecium primordium in mutant lines. Together, these results provide insights into cell cycle dynamics, meristematic maintenance, and medial tissue development in the Arabidopsis gynoecium.","PeriodicalId":233,"journal":{"name":"The Plant Journal","volume":"122 6","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/tpj.70299","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144472922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

The dsRNA-binding protein OsDRB1.4 is phosphorylated by OsMPK5 and negatively regulates rice defense against Magnaporthe oryzae dsrna结合蛋白OsDRB1.4被OsMPK5磷酸化，负向调控水稻对稻瘟病菌的防御

IF 6.2 1区生物学

The Plant Journal Pub Date : 2025-06-24 DOI: 10.1111/tpj.70285

Yuedan Chen, Shuai Yin, Yinong Yang, Kabin Xie

{"title":"The dsRNA-binding protein OsDRB1.4 is phosphorylated by OsMPK5 and negatively regulates rice defense against Magnaporthe oryzae","authors":"Yuedan Chen, Shuai Yin, Yinong Yang, Kabin Xie","doi":"10.1111/tpj.70285","DOIUrl":"https://doi.org/10.1111/tpj.70285","url":null,"abstract":"<div>\u0000 \u0000 Plant mitogen-activated protein kinases (MAPKs) are pivotal regulators of the innate immune signaling pathway and phosphorylate an array of transcription factors to reprogram the expression of disease-responsive genes. However, how MAPKs reprogram plant gene expression at the posttranscriptional level is poorly understood. Here, we show that double-stranded RNA-binding protein 1.4 (OsDRB1.4) is a substrate of OsMPK5 in rice. OsDRB1.4 belongs to a monocot-specific subgroup of the DRB family and contains a noncanonical MAPK interaction motif in its C terminus. OsMPK5 mainly phosphorylates the 216th serine of OsDRB1.4 in vivo. Silencing and knockout of OsDRB1.4 increased rice defense against Magnaporthe oryzae and increased the expression of 34 genes, including PR5 and three R-GENE ANALOG genes, whereas OsDRB1.4-overexpressing rice was more susceptible to blast disease. In contrast, overexpressing OsDRB1.4 with the phosphorylation sites mutated in rice did not affect disease susceptibility, suggesting that these phosphorylation sites are critical for OsDRB1.4 functionality. A total of 130 transcript units and 171 annotated repetitive sequence transcripts were identified as the RNA partners of OsDRB1.4 through targeted RNA editing. RNA electrophoretic mobility shift assays validated that OsDRB1.4 directly bound the stem-loop dsRNAs of microRNA precursors and the 3′-UTRs of protein-coding mRNAs. Further analysis indicated that OsDRB1.4 positively regulated the expression of mature osa-miR7695 and osa-miR2871. More importantly, OsDRB1.4 bound stem-loop dsRNA in the 3′-UTR of Pi-ta RESISTANCE (Ptr) and negatively affected protein expression. Together, our data reveal that the OsMPK5-OsDRB1.4 module negatively regulates rice defense against M. oryzae through the posttranscriptional suppression of defense-related genes.\u0000 </div>","PeriodicalId":233,"journal":{"name":"The Plant Journal","volume":"122 6","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144367303","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}

引用次数: 0

The Arabidopsis TNL immune receptor BNT1 localizes to the plastid envelope and is required for the flg22-induced resistance against Pseudomonas 拟南芥TNL免疫受体BNT1定位于质体包膜，是flg22诱导的假单胞菌抗性所必需的

IF 6.2 1区生物学

The Plant Journal Pub Date : 2025-06-24 DOI: 10.1111/tpj.70295

Micaela Y. Peppino Margutti, Ana P. Cislaghi, Ariel Herrera-Vásquez, Julieta R. Palomeque, Francisco R. Bellino Tabera, María E. Alvarez, Francisca Blanco-Herrera, Nicolás M. Cecchini

{"title":"The Arabidopsis TNL immune receptor BNT1 localizes to the plastid envelope and is required for the flg22-induced resistance against Pseudomonas","authors":"Micaela Y. Peppino Margutti, Ana P. Cislaghi, Ariel Herrera-Vásquez, Julieta R. Palomeque, Francisco R. Bellino Tabera, María E. Alvarez, Francisca Blanco-Herrera, Nicolás M. Cecchini","doi":"10.1111/tpj.70295","DOIUrl":"https://doi.org/10.1111/tpj.70295","url":null,"abstract":"<div>\u0000 \u0000 Precise localization and trafficking of plant immune receptors are critical for their function. We identify the TNL-class nucleotide-binding leucine-rich repeat receptor (NLR) BURNOUT1 (BNT1) from Arabidopsis thaliana as localized to plastids, key organelles for plant immunity. Alternative transcription start site usage generates two isoforms of BNT1: BNT1.2, which is targeted to the plastid envelope via an N-terminal signal-anchored mechanism, and BNT1.1, which resides in the cytoplasm. Moreover, BNT1.2 is predominantly expressed in epidermal cells, where it localizes to the so-called sensory plastids. Functional analysis revealed that bnt1 mutants exhibit compromised PAMP-triggered immunity (PTI) responses, including impaired callose deposition and reduced flg22-induced resistance to Pseudomonas syringae pv. tomato, while flg22-induced apoplastic reactive oxygen species production remains unaffected. Notably, only the plastid-localized BNT1.2 isoform is required for these PTI responses. Our findings reveal a role for NLRs in regulating PTI responses from plastids and highlight these organelles as key hubs for signal(s) integration during plant–pathogen interactions.\u0000 </div>","PeriodicalId":233,"journal":{"name":"The Plant Journal","volume":"122 6","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144367506","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}

引用次数: 0

Algal origins of core land plant stress response subnetworks 陆生植物核心逆境响应子网络的藻类起源

IF 6.2 1区生物学

The Plant Journal Pub Date : 2025-06-23 DOI: 10.1111/tpj.70291

Armin Dadras, Pauline Duminil, Sophie de Vries, Iker Irisarri, Ivo Feussner, Jan de Vries

引用次数: 0

From data to discovery: leveraging big data in plant natural products biosynthesis research 从数据到发现：利用大数据进行植物天然产物生物合成研究

IF 6.2 1区生物学

The Plant Journal Pub Date : 2025-06-22 DOI: 10.1111/tpj.70288

Matthew McConnachie, Tuan-Anh Minh Nguyen, Truc Kim, Trinh-Don Nguyen, Thu-Thuy T. Dang

{"title":"From data to discovery: leveraging big data in plant natural products biosynthesis research","authors":"Matthew McConnachie, Tuan-Anh Minh Nguyen, Truc Kim, Trinh-Don Nguyen, Thu-Thuy T. Dang","doi":"10.1111/tpj.70288","DOIUrl":"https://doi.org/10.1111/tpj.70288","url":null,"abstract":"Plant natural products or specialized metabolites play a vital role in drug discovery and development, with many clinically important derivatives such as the anticancer drugs topotecan (derived from the natural alkaloid camptothecin) and etoposide (derived from the natural polyphenol podophyllotoxin). Remarkable advances in understanding plant natural product metabolism have been achieved at an unprecedented pace over the past 15 years. The integration of high-throughput technologies in genomics, transcriptomics, and metabolomics has generated vast datasets that provide a more comprehensive understanding of plant metabolism. Additionally, advances in computational tools, machine learning, and data analytics have played a crucial role in processing and interpreting the massive amounts of newly available data, enabling researchers to uncover intricate regulatory networks and identify key components of biosynthetic pathways. This review navigates the evolving landscape of plant biosynthetic pathway elucidation accelerated by innovative multidisciplinary strategies that capitalize on big data. We highlight recent advances in plant-specialized biosynthesis that illustrate how big data are increasingly leveraged to unravel the complexities of plant metabolism.","PeriodicalId":233,"journal":{"name":"The Plant Journal","volume":"122 6","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/tpj.70288","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144339116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Auxin signaling mediated embryogenic cell formation during the early stage of somatic embryogenesis in Malus domestica “Gala” 生长素信号介导的海棠体细胞胚发生早期胚性细胞的形成

IF 6.2 1区生物学

The Plant Journal Pub Date : 2025-06-20 DOI: 10.1111/tpj.70287

Yue Yang, Jun Wei, Yu Wang, Mingkun Chen, Song Li, Ziyi Han, Yu Duan, Yaping Xu, Hongmei Sun, Houhua Li

{"title":"Auxin signaling mediated embryogenic cell formation during the early stage of somatic embryogenesis in Malus domestica “Gala”","authors":"Yue Yang, Jun Wei, Yu Wang, Mingkun Chen, Song Li, Ziyi Han, Yu Duan, Yaping Xu, Hongmei Sun, Houhua Li","doi":"10.1111/tpj.70287","DOIUrl":"https://doi.org/10.1111/tpj.70287","url":null,"abstract":"<div>\u0000 \u0000 Embryogenic cell formation is a prerequisite for somatic embryogenesis (SE) in plants. Auxin signaling is indispensable for the initiation of embryogenic cell formation. However, the mechanism of auxin signaling that regulates this process in apple remains unclear. In this study, the MdAUX/IAA7.1 and MdARF5 genes were identified as key auxin signaling regulators in the early stage of SE through RNA sequencing and RT-qPCR in Malus domestica “Gala.” MdARF5 significantly promoted embryogenic cell formation and shortened the induction cycle of SE in transgenic overexpression assays. When MdARF5 was knocked out, the explants could not form somatic embryos even when stimulated with exogenous auxin. Through RNA sequencing analysis of MdARF5-overexpressing lines and transgenic assays, MdLBD41 was identified as the key gene that regulates SE and responds to MdARF5. In response to auxin signaling, the MdARF5 protein directly binds to the promoter of MdLBD41 to activate its transcription, thereby promoting SE in apples. MdAUX/IAA7.1 interacts with the MdARF5 protein without auxin signaling, inhibiting the downstream transcription of MdLBD41, and thereby negatively regulating SE in apples. In conclusion, our results elucidate the mechanism of MdAUX/IAA7.1 and MdARF5 genes responding to auxin and MdARF5, promoting the embryogenic cell formation by mediating the positive regulation of MdLBD41 expression.\u0000 </div>","PeriodicalId":233,"journal":{"name":"The Plant Journal","volume":"122 6","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144323693","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}

引用次数: 0

The time machine: feedback loops, post-transcriptional regulation, and environmental integration in the plant circadian oscillator 时间机器：植物昼夜节律振荡器中的反馈回路、转录后调控和环境整合

IF 6.2 1区生物学

The Plant Journal Pub Date : 2025-06-20 DOI: 10.1111/tpj.70275

Stacey L. Harmer

{"title":"The time machine: feedback loops, post-transcriptional regulation, and environmental integration in the plant circadian oscillator","authors":"Stacey L. Harmer","doi":"10.1111/tpj.70275","DOIUrl":"https://doi.org/10.1111/tpj.70275","url":null,"abstract":"<div>\u0000 \u0000 Daily rhythms in physiology are obvious and widespread. While for millennia it was thought that these cycles represent passive responses to environmental cycles, we now recognize that many of them are governed by circadian oscillators. In plants, these cell-autonomous oscillators regulate daily processes such as photosynthesis, organ growth, and hormone production, as well as seasonal transitions like flowering. Furthermore, the circadian system gates plant responses to biotic and abiotic stresses, modulating susceptibility to pathogens and environmental extremes in a time-of-day-dependent manner. Variants of circadian clock genes have been repeatedly selected during crop domestication and improvement, highlighting the importance of the circadian system to plants and its relevance for agriculture. Here, I review the history of circadian studies in plants and summarize our current understanding of the molecular nature of the circadian oscillator. I also discuss how this complex network both responds to and is buffered against changes in the environment. Next, I examine how circadian oscillators differ between various tissues and how their activities are coordinated throughout the plant body. Finally, I discuss emerging directions, such as ways in which this understanding can be applied to crop improvement in the face of climate change.\u0000 </div>","PeriodicalId":233,"journal":{"name":"The Plant Journal","volume":"122 6","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144323694","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}

引用次数: 0

Integrating genome-wide traits and multi-loci phylogeny to investigate orchid evolution—A case study on Pleurothallidinae 整合全基因组性状和多位点系统发育研究兰花进化——以凤尾科为例

IF 6.2 1区生物学

The Plant Journal Pub Date : 2025-06-20 DOI: 10.1111/tpj.70281

Pavel Trávníček, Jan Ponert, Marcos Vinicius Dantas-Queiroz, Zuzana Chumová

{"title":"Integrating genome-wide traits and multi-loci phylogeny to investigate orchid evolution—A case study on Pleurothallidinae","authors":"Pavel Trávníček, Jan Ponert, Marcos Vinicius Dantas-Queiroz, Zuzana Chumová","doi":"10.1111/tpj.70281","DOIUrl":"https://doi.org/10.1111/tpj.70281","url":null,"abstract":"Rapidly radiated groups are usually accompanied by unclear lineage and taxa delineation, which complicates their better understanding in terms of biodiversity, evolutionary processes, and taxonomic treatment. The most species-rich orchid subtribe, Pleurothallidinae, exemplifies an extremely diverse group with a complex evolutionary history associated with Andean orography. Here we combined multi-loci phylogeny reconstruction (HybSeq), genome-wide traits (inferred by flow cytometry), spatial analyses, and biogeography to investigate the evolutionary intricacy of one clade of Pleurothallidinae orchids. To achieve deep insights, we performed multiple species tree reconstruction approaches with the implementation of custom scripts to reveal sources of topological discrepancies and alternative evolutionary scenarios. The phylogeny clearly resolves the delimitation of the main evolutionary lineages corresponding to the accepted genera, with the exception of the genus Specklinia, which is divided into three distinct monophyletic lineages whose taxonomic treatment is proposed. Genome-wide characters (especially genome size) show an association with precipitation seasonality in a geographical context, and partial endoreplication, a unique character of orchids, is geographically restricted to the Andes, Central America, and the Caribbean. Specifically, the Andean region exemplifies the prevalence of bigger genome size and higher GC content, resulting from a higher proportion of species with partial endoreplication. The Andean origin of the clade was also revealed by biogeographic analysis. Our comprehensive approach has provided deep insights into the evolution of this clade and may be a useful tool for unraveling the intricate evolutionary history of similarly complex lineages.","PeriodicalId":233,"journal":{"name":"The Plant Journal","volume":"122 6","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/tpj.70281","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144323696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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