Plant Physiology最新文献_第6页

Pyrenoid-based CO2-concentrating mechanisms across diverse lineages: convergent features and their applications for engineering. 基于芘类的不同谱系的二氧化碳集中机制：收敛特征及其在工程中的应用。

IF 8.2 1区生物学

Plant Physiology Pub Date : 2026-10-06 DOI: 10.1093/plphys/kiag250

Jessica H Pritchard, Sophie N R Young, Herbie Garland, Luke C M Mackinder, Alistair J McCormick

{"title":"Pyrenoid-based CO2-concentrating mechanisms across diverse lineages: convergent features and their applications for engineering.","authors":"Jessica H Pritchard, Sophie N R Young, Herbie Garland, Luke C M Mackinder, Alistair J McCormick","doi":"10.1093/plphys/kiag250","DOIUrl":"10.1093/plphys/kiag250","url":null,"abstract":"Engineering pyrenoid-based CO2-concentrating mechanisms (pCCMs) into crop plants is a promising strategy to boost photosynthetic performance, enhance yield potential, and improve resilience to future climates. Achieving this goal requires a deeper understanding of the molecular principles that enable pyrenoids to elevate CO2 around Rubisco. Although pyrenoids span a remarkable diversity of forms across algae and hornworts, they consistently exhibit 3 core features: a condensed Rubisco matrix, specialized membranes that deliver inorganic carbon, and a diffusion barrier that restricts CO2 leakage. Here, we review recent mechanistic advances from Chlamydomonas reinhardtii alongside emerging insights from other algae and hornworts that highlight both conserved strategies and lineage-specific innovations in Rubisco condensation, membrane-associated inorganic carbon channelling, and matrix encapsulation. Together, these findings refine our understanding of pCCM diversity and provide an increasingly robust blueprint for reconstructing pCCMs in vascular plant chloroplasts.","PeriodicalId":20101,"journal":{"name":"Plant Physiology","volume":" ","pages":""},"PeriodicalIF":8.2,"publicationDate":"2026-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13655443/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147778421","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

Starching again: manipulating starch metabolism to improve cassava quality. 再次淀粉化：控制淀粉代谢以提高木薯品质。

IF 8.2 1区生物学

Plant Physiology Pub Date : 2026-10-06 DOI: 10.1093/plphys/kiag350

Rose McNelly

引用次数: 0

Sensitive detection of chloroplast movements through changes in leaf cross-polarized reflectance 通过叶片交叉偏振反射率的变化对叶绿体运动的灵敏检测

IF 7.4 1区生物学

Plant Physiology Pub Date : 2026-10-06 DOI: 10.1093/plphys/kiag739

Paweł Hermanowicz,Aleksandra Giza,Katarzyna M Sowa,Paweł Korecki,Justyna Łabuz

{"title":"Sensitive detection of chloroplast movements through changes in leaf cross-polarized reflectance","authors":"Paweł Hermanowicz,Aleksandra Giza,Katarzyna M Sowa,Paweł Korecki,Justyna Łabuz","doi":"10.1093/plphys/kiag739","DOIUrl":"https://doi.org/10.1093/plphys/kiag739","url":null,"abstract":"Abstract We show that the positioning of chloroplasts in plant cells affects the ability of photosynthetic organs to depolarize linearly polarized light through diffuse reflection. We apply this phenomenon for the detection of blue-light-induced chloroplast movements using light reflected from leaves and green stems. High-light-induced chloroplast avoidance leads to an increase in reflectance, while chloroplast accumulation in low light has the opposite effect. The changes in reflectance are correlated with an increase in the leaf’s ability to depolarize linearly polarized light. Inclusion of polarization information in the detection procedure allows for the mitigation of the effects of sample orientation and for an increase in the specificity of detection. We applied this approach to examine chloroplast movements in the model plant Arabidopsis thaliana and four flowering plant species collected in the field. Despite the importance of chloroplast movements for the optimization of photosynthetic efficiency and biomass production, high-throughput reflectance-based methods are not routinely employed. Our approach opens the possibility of non-invasive, non-contact detection of chloroplast movements in a manner insensitive to the orientation of the leaf.","PeriodicalId":20101,"journal":{"name":"Plant Physiology","volume":"9 1","pages":""},"PeriodicalIF":7.4,"publicationDate":"2026-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149090421","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

Correction to: Drought-responsive TaMIP1 controls root density to confer the tradeoff between grain yield and drought resistance in wheat. 对干旱敏感的TaMIP1控制根系密度，在小麦产量和抗旱性之间取得平衡。

IF 8.2 1区生物学

Plant Physiology Pub Date : 2026-10-06 DOI: 10.1093/plphys/kiag700

引用次数: 0

Transposable elements and the evolutionary origins of C4 gene expression: the story of carbonic anhydrases in Flaveria 转座因子和C4基因表达的进化起源：黄草属碳酸酐酶的故事

IF 7.4 1区生物学

Plant Physiology Pub Date : 2026-10-06 DOI: 10.1093/plphys/kiag742

Matheus E Bianconi

引用次数: 0

PagERF173 regulates nitrate uptake and assimilation in poplar roots PagERF173调控杨树根系对硝酸盐的吸收和同化

IF 7.4 1区生物学

Plant Physiology Pub Date : 2026-10-06 DOI: 10.1093/plphys/kiag740

Min Zhang,Xinglu Zhou,Lei Zhang,Hantian Wei,Yongxia Bai,Xueqin Song,Jianjun Hu

{"title":"PagERF173 regulates nitrate uptake and assimilation in poplar roots","authors":"Min Zhang,Xinglu Zhou,Lei Zhang,Hantian Wei,Yongxia Bai,Xueqin Song,Jianjun Hu","doi":"10.1093/plphys/kiag740","DOIUrl":"https://doi.org/10.1093/plphys/kiag740","url":null,"abstract":"Abstract Poplar adapts to different nitrogen environments by regulating root N uptake and assimilation processes, but the integrated regulatory mechanisms underlying these responses remain unclear. In this study, whole-genome resequencing was performed on 162 poplar germplasm resources (including natural and cultivated germplasm), revealing that the population could be divided into four genetic groups. The cultivated germplasm resources were then subjected to low-nitrogen treatment to identify LN-tolerant germplasm. Integrating genome-wide association studies and weighted gene co-expression network analysis uncovered PagERF173, an AP2/ERF transcription factor, as a pleiotropic gene associated with root traits under LN condition and involved in coordinating nitrate uptake and assimilation. Under LN condition, although PagERF173 mutants and dominant repression line showed lower nitrate uptake and accumulation than the overexpression lines, they exhibited enhanced nitrate assimilation capacity, thereby promoting both shoot and root biomass accumulation. In contrast, PagERF173 overexpression lines displayed the opposite trend. Furthermore, during the N response, PagERF173 activated the expression of PagNRT5.6a, thereby enhancing root nitrate uptake. Meanwhile, PagERF173 interacted with PagNR and PagNiR proteins and inhibited NR and NiR enzymatic activities, thereby suppressing nitrate assimilation. These results reveal that PagERF173 plays an important role in coordinating the balance between root nitrate uptake and assimilation, providing a molecular basis for improving nitrogen use efficiency and breeding for LN adaptation in woody plants.","PeriodicalId":20101,"journal":{"name":"Plant Physiology","volume":"11 1","pages":""},"PeriodicalIF":7.4,"publicationDate":"2026-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149090428","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

Plant effector-triggered immunity requires RNA helicase PMH2-mediated group II intron splicing in mitochondria. 植物效应触发的免疫需要RNA解旋酶pmh2介导的线粒体II组内含子剪接。

IF 8.2 1区生物学

Plant Physiology Pub Date : 2026-10-06 DOI: 10.1093/plphys/kiag222

Ying Yuan, Xueya Li, Siqi Tang, Xiaochuan Hu, Jiatao Xie, Jiasen Cheng, Yanping Fu, Daohong Jiang, Bo Li, Xiao Yu

{"title":"Plant effector-triggered immunity requires RNA helicase PMH2-mediated group II intron splicing in mitochondria.","authors":"Ying Yuan, Xueya Li, Siqi Tang, Xiaochuan Hu, Jiatao Xie, Jiasen Cheng, Yanping Fu, Daohong Jiang, Bo Li, Xiao Yu","doi":"10.1093/plphys/kiag222","DOIUrl":"10.1093/plphys/kiag222","url":null,"abstract":"In plants, reactive oxygen species (ROS) play a crucial role in rapidly responding to biotic stresses, thus contributing to the establishment of immune networks and plant resistance against pathogen attack. The 2-layered plant immune system consists of the cell-surface pathogen-associated molecular pattern (PAMP)-triggered immunity (PTI) and intracellular effector-triggered immunity (ETI), both of which are associated with ROS burst. Mitochondria, serving as a major source of intracellular ROS, are key to plant immunity, and their function depends on the RNA processing of mitochondrial genes. The DEAD-box RNA helicase PUTATIVE MITOCHONDRIAL RNA HELICASE 2 (PMH2) is required for efficient group II intron splicing in mitochondria; however, how PMH2-mediated fine RNA splicing contributes to plant immunity remains unknown. Here, we revealed the function of PMH2 in ETI using Arabidopsis thaliana. ETI activation led to the PMH2-mediated reduction in splicing efficiency of cox2, which encodes the subunit of mitochondrial respiratory chain complex IV, and the activity of complex IV, thereby promoting the generation of mtROS. Moreover, PMH2-mediated mtROS facilitated the expression of the nuclear immunity genes. These results collectively suggest that PMH2 contributes to specific mitochondrial RNA splicing and fine-tunes the mitochondrial ROS burst, therefore maintaining robust plant immunity. Our study provides the mechanism of RNA helicase linking RNA processing and mitochondrial dynamics to plant ETI.","PeriodicalId":20101,"journal":{"name":"Plant Physiology","volume":" ","pages":""},"PeriodicalIF":8.2,"publicationDate":"2026-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148205608","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 CsANT1-CsCUC2/CsCYCD3;1 regulatory module coordinates leaf margin development and cell proliferation in cucumber. CsANT1-CsCUC2 / CsCYCD3;1个调节模块协调黄瓜叶缘发育和细胞增殖。

IF 8.2 1区生物学

Plant Physiology Pub Date : 2026-10-06 DOI: 10.1093/plphys/kiag673

Jingwei Wei, Shuo Xu, Yafeng Gu, Weike Sun, Zhuhu Cai, Hongyu Huang, Lihong Gao, Sonia Gazzarrini, Yongqiang Tian, Xin Li

{"title":"The CsANT1-CsCUC2/CsCYCD3;1 regulatory module coordinates leaf margin development and cell proliferation in cucumber.","authors":"Jingwei Wei, Shuo Xu, Yafeng Gu, Weike Sun, Zhuhu Cai, Hongyu Huang, Lihong Gao, Sonia Gazzarrini, Yongqiang Tian, Xin Li","doi":"10.1093/plphys/kiag673","DOIUrl":"10.1093/plphys/kiag673","url":null,"abstract":"Leaf shape is a critical agronomic trait that determines plant architecture and cultivation value, but its genetic and molecular mechanisms remain elusive. Here, we found 2 natural cucumber mutants, jtll and 10yjy, characterized by little, deeply lobed leaves with reduced cell number and auxin levels. Despite originating from distinct genetic backgrounds, both mutants were fine-mapped to the same locus encoding the AP2-like transcription factor AINTEGUMENTA 1 (CsANT1), thereby revealing a novel role of AINTEGUMENTA in leaf lobe formation. Furthermore, CsANT1 modulates auxin distribution along leaf margins via repressing the transcription of CsCUC2, which governs leaf margin morphogenesis. Meanwhile, CsANT1 directly activates Cyclin D3 (CsCYCD3;1) transcription to promote cell proliferation and regulate leaf size. Thus, CsANT1 coordinates leaf morphogenesis by synergistically regulating auxin transport and cell proliferation. Notably, the little and lobed leaf architecture conferred by CsANT1 resembles maple leaves and has high ornamental value. Cucumber varieties derived from this natural mutant have already been commercialized and highly popular for home potted horticulture. Overall, our findings reveal a CsANT1-CsCUC2/CsCYCD3;1 regulatory module governing leaf morphogenesis and provide genetic resources and a theoretical foundation for cucumber leaf-shape improvement.","PeriodicalId":20101,"journal":{"name":"Plant Physiology","volume":" ","pages":""},"PeriodicalIF":8.2,"publicationDate":"2026-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148906516","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

Elevated temperature accelerates leaf senescence and promotes leaf nitrogen transport to improve rice grain protein synthesis. 高温加速水稻叶片衰老，促进叶片氮转运，促进水稻籽粒蛋白质合成。

IF 8.2 1区生物学

Plant Physiology Pub Date : 2026-10-06 DOI: 10.1093/plphys/kiag310

Yufei Zhao, Chen Zhang, Wentao Shi, Ke Liu, Wei Wu, Yifan Wang, Ruiqi Li, Yuxuan Peng, Yingying Shen, Wenzhe Liu, Yanfeng Ding, Min Xi, She Tang

{"title":"Elevated temperature accelerates leaf senescence and promotes leaf nitrogen transport to improve rice grain protein synthesis.","authors":"Yufei Zhao, Chen Zhang, Wentao Shi, Ke Liu, Wei Wu, Yifan Wang, Ruiqi Li, Yuxuan Peng, Yingying Shen, Wenzhe Liu, Yanfeng Ding, Min Xi, She Tang","doi":"10.1093/plphys/kiag310","DOIUrl":"10.1093/plphys/kiag310","url":null,"abstract":"Elevated temperature during grain filling (ET) severely constrains rice yield and quality. Although additional nitrogen can mitigate the adverse effects of ET, both factors increase grain protein content, and the underlying physiological mechanisms remain poorly understood. Here, we conducted actual field warming (2.28 °C day/4.33 °C night) during the grain-filling period and applied an additional 60 kg N ha-1. The grain weight of superior spikelets (SS) was 2.1% lower under ET, while ET increased the grain weight by 4.23% and protein content by 2.95% in inferior spikelets (IS). ET promoted the level of free amino acids, improved the activities of glutamine synthetase and glutamate synthase, and upregulated the expression of an amino acid transporter gene (OsLHT1), mainly 9 to 15 days after flowering (DAF), in the leaf, ultimately accelerating leaf senescence post 20 DAF. Regardless of the temperature, the effect of nitrogen on leaves was similar to that of ET, while delaying leaf senescence and further increasing protein content in SS and IS. Metabolomic analysis further confirmed that ET accelerated leaf senescence and amino acid depletion in the leaves. Furthermore, the higher levels of L-histidine, along with increased levels of stress-responsive metabolites (D-raffinose and gentisic acid), collectively contributed to the improved protein content in IS under ET. Overall, the study provides insight into grain protein accumulation under warming.","PeriodicalId":20101,"journal":{"name":"Plant Physiology","volume":" ","pages":""},"PeriodicalIF":8.2,"publicationDate":"2026-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148150942","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

EDS1 Links SA Biosynthesis to Leaf Senescence via PBS3 EDS1通过PBS3连接SA生物合成与叶片衰老

IF 7.4 1区生物学

Plant Physiology Pub Date : 2026-10-06 DOI: 10.1093/plphys/kiag744

Jinyu He,Wei Li,Yunsheng Yang,Yuanli Wang,Pradeepa C G Bandaranayake,Libo Zhang,Ming Chang

引用次数: 0