Plant and Cell Physiology最新文献_第10页

Diversity and Distribution of Thioredoxin Family Proteins in Photosynthetic Organisms. 光合生物中硫氧还蛋白家族蛋白的多样性和分布。

IF 3.9 2区生物学

Plant and Cell Physiology Pub Date : 2025-07-04 DOI: 10.1093/pcp/pcaf073

Taichi Sugiyama, Keisuke Yoshida

引用次数: 0

Photosystem II: Commonality and Diversity with Emphasis on the Extrinsic Subunits. 光系统II：强调外在亚单位的共性与多样性。

IF 3.9 2区生物学

Plant and Cell Physiology Pub Date : 2025-07-02 DOI: 10.1093/pcp/pcaf072

Ko Imaizumi, Kentaro Ifuku

{"title":"Photosystem II: Commonality and Diversity with Emphasis on the Extrinsic Subunits.","authors":"Ko Imaizumi, Kentaro Ifuku","doi":"10.1093/pcp/pcaf072","DOIUrl":"https://doi.org/10.1093/pcp/pcaf072","url":null,"abstract":"Photosystem II (PSII) is a multi-subunit complex embedded in the thylakoid membranes of all oxygenic photosynthetic organisms, ranging from cyanobacteria to algae and plants. PSII converts solar energy to chemical energy and produces oxygen by oxidizing water, thereby sustaining life on Earth. The basic structures of the PSII core and the fundamental mechanisms of light-driven water oxidation are well-conserved among the diverse oxyphototrophs. Meanwhile, the compositions of the extrinsic subunits, which have critical roles in supporting water oxidation, have largely changed during evolution. The light-harvesting antenna systems of PSII are even more diverse. In this review, we comprehensively summarize the commonality of PSII, while highlighting the diversity of PSII among various oxyphototrophs. This includes summaries on the overall PSII core structure, PSII assembly and repair, charge separation and electron transfer in PSII, water oxidation by PSII, peripheral light-harvesting antennas of PSII, and PSII-antenna supercomplex structures, as well as a summary on the extrinsic subunits. Special emphasis is given on the extrinsic subunits, updating our understanding of their roles, and discussing the structural and functional complementation of the different sets of extrinsic subunits in cyanobacterial, red-lineage, and green plant PSII.","PeriodicalId":20575,"journal":{"name":"Plant and Cell Physiology","volume":" ","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144542048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Phosphate deficiency reduces nodule formation through a Phosphate Starvation Response -Like protein in Phaseolus vulgaris. 磷酸缺乏通过磷酸饥饿反应样蛋白减少菜豆根瘤的形成。

IF 3.9 2区生物学

Plant and Cell Physiology Pub Date : 2025-06-26 DOI: 10.1093/pcp/pcaf069

Jawahar Singh, Ana Belén Mendoza-Soto, Manish Tiwari, Tomas Tonaltsintle Acevedo-Sandoval, Damien Formey, Jean-Michel Ané, Mariel C Isidra-Arellano, Oswaldo Valdés-López

{"title":"Phosphate deficiency reduces nodule formation through a Phosphate Starvation Response -Like protein in Phaseolus vulgaris.","authors":"Jawahar Singh, Ana Belén Mendoza-Soto, Manish Tiwari, Tomas Tonaltsintle Acevedo-Sandoval, Damien Formey, Jean-Michel Ané, Mariel C Isidra-Arellano, Oswaldo Valdés-López","doi":"10.1093/pcp/pcaf069","DOIUrl":"https://doi.org/10.1093/pcp/pcaf069","url":null,"abstract":"Phosphate deficiency reduces nodule formation in various legumes, which hinders nitrogen fixation and crop yield. We previously showed that phosphate deficiency reduces nodule formation by activating the autoregulation of nodulation (AON) pathway. We also observed that some genetic components of the AON pathway contain P1BS cis-regulatory elements in their promoter regions, which are recognized by the phosphate starvation response 1 (PHR1) transcription factor. This evidence led us to hypothesize that host plant phosphate levels regulate the expression of genes essential for forming nodules through a PHR-Like protein. In the present study, we provide evidence supporting the participation of PvPHR-Like 7 (PvPHR-L7) in regulating nodule formation in Phaseolus vulgaris. Modulation of PvPHR-L7's expression by RNA interference (RNAi) and overexpression suggested that this transcription factor may control the expression of crucial symbiotic genes involved in nodule development in P. vulgaris. An RT-qPCR analysis revealed that the expression of PvPHR-L7, PvNIN, and PvTML is regulated in accordingly to the plant host Pi levels. Transactivation assays in Nicotiana benthamiana and P. vulgaris transgenic roots indicate that PvPHR-L7 can upregulate the expression of PvNIN and PvTML in the absence of rhizobia. In contrast, PvPHR-L7 downregulates the expression of PvNIN under symbiotic conditions with rhizobia. The data presented shed light on the potential role that PvPHR-L7 plays in the root nodule symbiosis.","PeriodicalId":20575,"journal":{"name":"Plant and Cell Physiology","volume":" ","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144497885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Comparative Analysis of Natural vs Artificial Mn4Ca-clusters: Structural Insights into O-O Bond Formation in Photosystem II. 天然与人工mn4ca簇的比较分析：光系统II中O-O键形成的结构见解。

IF 3.9 2区生物学

Plant and Cell Physiology Pub Date : 2025-06-25 DOI: 10.1093/pcp/pcaf067

Zaining Wang, Yang Chen, Changhui Chen, Chunxi Zhang

{"title":"Comparative Analysis of Natural vs Artificial Mn4Ca-clusters: Structural Insights into O-O Bond Formation in Photosystem II.","authors":"Zaining Wang, Yang Chen, Changhui Chen, Chunxi Zhang","doi":"10.1093/pcp/pcaf067","DOIUrl":"https://doi.org/10.1093/pcp/pcaf067","url":null,"abstract":"The oxygen-evolving center (OEC) of photosystem II (PSII) is a unique Mn4CaO5-cluster that catalyzes the water-splitting reaction to produce electrons, protons, and dioxygen. Recently, the detailed structures of the OEC in different S-states have been revealed by X-ray free electron laser (XFEL). To facilitate understanding the structure-function relationship of the OEC, a series of artificial Mn4CaO4-clusters have been synthesized, which closely mimic the main metal-oxide core and peripheral ligands, as well as the redox properties of the OEC. Herein, we have systematically analyzed the oxidation states of all Mn ions in the structural data of the OEC revealed by XFEL and artificial Mn4CaO4-clusters. It shows that the oxidation states of some Mn ions in structural data of OEC are significantly lower than the expected values in native PSII, suggesting the occurrence of the reduction of high-valent Mn ions induced by XFEL, whereas all Mn ions in artificial Mn4CaO4-clusters have the same oxidation states as those in the S1 state OEC in native PSII. Furthermore, for the first time, we have observed that the missing μ2-O bridge in the artificial Mn4CaO4-cluster can be generated in solution, forming an unstable Mn4CaO5-cluster, which supports that this μ2-O bridge (O4) is exchangeable and may serve as the active site for O-O bond formation in the cluster. These results provide new insights into the catalytic mechanism of the oxygen-evolving reaction in both natural and artificial photosynthesis.","PeriodicalId":20575,"journal":{"name":"Plant and Cell Physiology","volume":" ","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144485623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Enzymatic Activity of C-20 Methyltransferase BchU Evaluating Its Role in Bacteriochlorophyll c Biosynthetic Pathway. c -20甲基转移酶BchU的酶活性及其在细菌叶绿素c生物合成途径中的作用

IF 3.9 2区生物学

Plant and Cell Physiology Pub Date : 2025-05-31 DOI: 10.1093/pcp/pcaf060

Jiro Harada, Shunsuke Takahashi, Shigeaki Osumi, Yoshitaka Saga, Mitsuaki Hirose, Hirozo Oh-Oka, Hitoshi Tamiaki

引用次数: 0

An alternative pathway to starch granule initiation unraveled in Chlamydomonas reinhardtii. 在莱茵衣藻中揭示了淀粉颗粒形成的另一途径。

IF 3.9 2区生物学

Plant and Cell Physiology Pub Date : 2025-05-30 DOI: 10.1093/pcp/pcaf019

Adeline Courseaux, Philippe Deschamps, David Dauvillée

{"title":"An alternative pathway to starch granule initiation unraveled in Chlamydomonas reinhardtii.","authors":"Adeline Courseaux, Philippe Deschamps, David Dauvillée","doi":"10.1093/pcp/pcaf019","DOIUrl":"10.1093/pcp/pcaf019","url":null,"abstract":"The initiation of starch granule synthesis remains a relatively poorly understood phenomenon. Recent advances enabled the establishment of a model explaining the synthesis of new starch granules in Arabidopsis thaliana. These characterization studies revealed the involvement of both a specific starch synthase isoform (SS4) and several nonenzymatic proteins in this process. In this work, we investigated whether the initiation of starch synthesis in the green microalgae Chlamydomonas reinhardtii involves the same machinery as those uncovered in the plant model. Our extensive phylogenetic analysis revealed that most of the key players that were identified in higher plants are not found in microalgae, suggesting that a different pathway is taking place. We showed that restoration of ADP-glucose synthesis in a mutant strain devoid of any endogenous primers allowed normal starch synthesis, revealing the existence of an initiation mechanism in Chlamydomonas. Our biochemical characterization studies revealed that starch synthase isoform 3 possesses the intrinsic capacity to initiate polysaccharide synthesis in vitro and could be one of the functions involved in starch initiation. Our work suggests that the initiation of starch synthesis in Chlamydomonas involves a different pathway from that described in Arabidopsis and that further efforts will be required to identify the proteins involved in this process.","PeriodicalId":20575,"journal":{"name":"Plant and Cell Physiology","volume":" ","pages":"738-752"},"PeriodicalIF":3.9,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143365465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

To be prominent: epigenetic regulation of awn development in barley. 待突出：大麦芒发育的表观遗传调控。

IF 3.9 2区生物学

Plant and Cell Physiology Pub Date : 2025-05-30 DOI: 10.1093/pcp/pcaf037

Xiujuan Yang

引用次数: 0

Rice master regulator 'HYR' enhances growth and defense mechanisms with consequences for fall armyworm growth and host selection. 水稻主调节剂“HYR”增强秋粘虫生长和寄主选择的生长和防御机制

IF 3.9 2区生物学

Plant and Cell Physiology Pub Date : 2025-05-30 DOI: 10.1093/pcp/pcaf025

Krishnarao Gandham, Julie Thomas, Awais Riaz, Devi Balakrishnan, Andy Pereira, Rupesh Kariyat

{"title":"Rice master regulator 'HYR' enhances growth and defense mechanisms with consequences for fall armyworm growth and host selection.","authors":"Krishnarao Gandham, Julie Thomas, Awais Riaz, Devi Balakrishnan, Andy Pereira, Rupesh Kariyat","doi":"10.1093/pcp/pcaf025","DOIUrl":"10.1093/pcp/pcaf025","url":null,"abstract":"Rice (Oryza sativa L.), the staple food for half of the world's population, suffers heavy damage by insect herbivores, especially the emerging fall armyworm (FAW), Spodoptera frugiperda. HIGHER YIELD RICE (HYR), a master regulator of multiple biological pathways with an established gene regulatory network, has been found to improve rice yield to ∼29% and tolerance to environmental stress. However, its impact on defense has not been explored. We hypothesized that, FAW would target HYR plants because of its vigorous growth and lead to trade-offs for defense. Through a series of experiments with HYR and its wild type (WT), we show that HYR plants have enhanced below-ground growth, physiological traits, and direct and indirect defense traits including leaf trichomes, wax, and volatile organic compounds. To test possible phytohormone-mediated defense signaling, we focussed on jasmonic acid and salicylic acid gene expression panel and found that most of these genes are highly expressed in HYR when compared to its WT counterpart. Bioassays examining developmental milestones also revealed that HYR plants effectively deter FAW, and when force-fed, caused negative effects. Collectively, our findings suggest that the master regulator HYR (Higher Yield Rice expressing) plants enhance growth and physiological traits, as well as physical and chemical defense mechanisms through co-ordinated defense gene expression, which deter herbivore feeding, growth, development, and host selection.","PeriodicalId":20575,"journal":{"name":"Plant and Cell Physiology","volume":" ","pages":"687-704"},"PeriodicalIF":3.9,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143567968","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 C2H2 zinc finger protein, OsZOS2-19, modulates ABA sensitivity and cold response in rice. C2H2锌指蛋白OsZOS2-19调控水稻ABA敏感性和冷响应

IF 3.9 2区生物学

Plant and Cell Physiology Pub Date : 2025-05-30 DOI: 10.1093/pcp/pcaf018

Di Zhang, Xiaoping Ding, Zhijun Wang, Wenyu Li, Lingling Li, Ling Liu, Huang Zhou, Jianghui Yu, Cheng Zheng, HouXiong Wu, Dingyang Yuan, Meijuan Duan, Citao Liu

引用次数: 0

The phytochrome B signaling regulates salt-mediated seedling growth in the dark. 光敏色素B信号调节盐介导的幼苗在黑暗中的生长。

IF 3.9 2区生物学

Plant and Cell Physiology Pub Date : 2025-05-30 DOI: 10.1093/pcp/pcaf029

Peipei Qi, Weiping Mo, Rongcheng Lin

{"title":"The phytochrome B signaling regulates salt-mediated seedling growth in the dark.","authors":"Peipei Qi, Weiping Mo, Rongcheng Lin","doi":"10.1093/pcp/pcaf029","DOIUrl":"10.1093/pcp/pcaf029","url":null,"abstract":"Light is an essential environmental factor that facilitates the robust upward growth of post-germinative seedlings emerging from buried seeds that is partly mediated by the photoreceptors. Salinity stress hampers plant growth and development and reduces yield. However, the involvement and regulatory role of photoreceptors and light signaling factors to salt stress are largely unknown. Here, we report that mutants of the phytochrome B (phyB) photoreceptor showed reduced sensitivity to salt-inhibited hypocotyl elongation in darkness, and that PHYTOCHROME-INTERACTING FACTOR 3 (PIF3) acts downstream of phyB in regulating this process in Arabidopsis thaliana. We also show that SALT OVERLY SENSITIVE 2 (SOS2) regulates phyB protein accumulation under salt stress in darkness. Surprisingly, salt treatment induces phyB nuclear body formation in darkness. Moreover, we found that the phosphorylation at residue Ser-86 of phyB is essential for its function, and the scaffold protein 14-3-3κ is involved in the regulation of phyB under salt stress in darkness. Taken together, our study reveals a regulatory role of the phyB-PIF3 module in mediating post-germination growth in darkness in response to salt stress.","PeriodicalId":20575,"journal":{"name":"Plant and Cell Physiology","volume":" ","pages":"766-780"},"PeriodicalIF":3.9,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12125576/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143658377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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