Journal of Plant Research最新文献_第3页

Effects of suppression of phosphate transporter 4;4 on CO₂ assimilation in rice. 抑制磷酸转运体4；4对水稻CO2同化的影响。

IF 2.7 3区生物学

Journal of Plant Research Pub Date : 2025-04-18 DOI: 10.1007/s10265-025-01638-4

Ryosei Harada, Takaya Sugimoto, Yuki Takegahara-Tamakawa, Amane Makino, Yuji Suzuki

{"title":"Effects of suppression of phosphate transporter 4;4 on CO2 assimilation in rice.","authors":"Ryosei Harada, Takaya Sugimoto, Yuki Takegahara-Tamakawa, Amane Makino, Yuji Suzuki","doi":"10.1007/s10265-025-01638-4","DOIUrl":"https://doi.org/10.1007/s10265-025-01638-4","url":null,"abstract":"Homeostasis of inorganic phosphate (Pi) in the chloroplasts is essential for healthy CO2 assimilation. When Pi in chloroplasts is insufficient, the increase in the CO2 assimilation rate (A) with an increase in CO2 level is restricted, whereas A per unit total protein level moderately decreases under low-to-normal CO2 levels. Some phosphate transporters (PHT) are localized in the chloroplast envelope; however, their contribution to the maintenance of Pi homeostasis for CO2 assimilation has rarely been reported. In this study, we generated transgenic rice plants with RNAi-suppressed PHT4;4, one of the two genes of chloroplast envelope-localized PHT, and examined the changes in the characteristics of CO2 assimilation. In three transgenic lines, the mRNA levels of PHT4;4 decreased by approximately 80% without a notable decrease in total leaf-P levels or total leaf-N levels, which is thought to approximately correspond to total protein levels. A in the transgenic plants tended to be slightly lower than that in the wild-type plants, irrespective of the CO2 level, and typically increased to saturation with increasing CO2 levels. A per unit total leaf-N level in transgenic plants tended to be slightly lower than that in wild-type plants. These results indicate that substantial PHT4;4 suppression caused slight symptoms of Pi-limited CO2 assimilation. Therefore, PHT4;4 is suggested to be involved in the maintenance of chloroplast Pi homeostasis for healthy CO2 assimilation, although its contribution is minor.","PeriodicalId":16813,"journal":{"name":"Journal of Plant Research","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144064069","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

Dynamic changes in chromatin structure and transcriptional activity in the generative cells of Lilium longiflorum. 百合生殖细胞染色质结构和转录活性的动态变化。

IF 2.7 3区生物学

Journal of Plant Research Pub Date : 2025-04-15 DOI: 10.1007/s10265-025-01637-5

Mio K Shibuta, Tsugumi Aso, Yutsuki Okawa

{"title":"Dynamic changes in chromatin structure and transcriptional activity in the generative cells of Lilium longiflorum.","authors":"Mio K Shibuta, Tsugumi Aso, Yutsuki Okawa","doi":"10.1007/s10265-025-01637-5","DOIUrl":"https://doi.org/10.1007/s10265-025-01637-5","url":null,"abstract":"Pollen is required for fertilization and the associated production of seeds and fruits, which are important for human nutrition. Research on the tricellular pollen of Arabidopsis thaliana revealed that chromatin is highly condensed and transcriptional activity is suppressed in sperm cells. However, comprehensive structural investigations involving generative cells of bicellular pollen have not been conducted. In this study, we provide relevant insights into other angiosperms that produce bicellular pollen. Lilium longiflorum, which has large and easily observable nuclei, was used for a detailed analysis of the chromatin structure and transcriptionally active regions in pollen and pollen tubes. Chromatin was condensed, resulting in a ribbon-like structure that was clearly visible in mature generative cell nuclei. Additionally, transcriptionally active regions were restricted to the intersections of chromatin as pollen desiccated. Although de novo transcription was revealed to be unnecessary for pollen tube growth, transcriptional activity temporarily resumed before generative cell division during pollen tube growth. Moreover, the inhibition of de novo transcription influenced changes in nuclear morphology. In this study, the distinctive chromatin structures and transcriptional activity states in generative cell nuclei of bicellular pollen were elucidated, with the generated data contributing to a deeper understanding of transcription and other regulatory mechanisms involved in pollen maturation and pollen tube growth.","PeriodicalId":16813,"journal":{"name":"Journal of Plant Research","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144031097","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

Correction to: Bud development, flower phenology and life history of holoparasitic Rafesia cantleyi. 修正：全寄生拉菲（Rafesia cantleyi）的芽发育、花物候和生活史。

IF 2.7 3区生物学

Journal of Plant Research Pub Date : 2025-04-12 DOI: 10.1007/s10265-025-01633-9

Suk Ling Wee, Shwu Bing Tan, Sue Han Tan, Bernard Kok Bang Lee

引用次数: 0

Abscisic acid enhances non-photochemical quenching through SnRK2 and ABI3 in Physcomitrium patens. 脱落酸通过SnRK2和ABI3促进了假丝胞的非光化学猝灭。

IF 2.7 3区生物学

Journal of Plant Research Pub Date : 2025-04-07 DOI: 10.1007/s10265-025-01627-7

Chang-Hyun Maeng, Takuya Fujita, Junko Kishimoto, Ryouichi Tanaka, Atsushi Takabayashi, Tomomichi Fujita

{"title":"Abscisic acid enhances non-photochemical quenching through SnRK2 and ABI3 in Physcomitrium patens.","authors":"Chang-Hyun Maeng, Takuya Fujita, Junko Kishimoto, Ryouichi Tanaka, Atsushi Takabayashi, Tomomichi Fujita","doi":"10.1007/s10265-025-01627-7","DOIUrl":"https://doi.org/10.1007/s10265-025-01627-7","url":null,"abstract":"The transition of plants in the green lineage from aquatic to terrestrial environments during the bryophyte stage marked a pivotal point in evolution. Successful terrestrialization required evolutionary adaptations to harsh and fluctuating light conditions, where direct irradiation is stronger than in aquatic environments. To cope with these challenges, plants evolved regulatory mechanisms to control cellular activities. One such acclimation is rapidly reversible, energy-dependent non-photochemical quenching (NPQ), which dissipates excess light energy as heat to protect the photosynthetic apparatus. Another critical innovation is abscisic acid (ABA) signaling, believed to have first emerged in bryophytes. Here, we reveal a potential link between these two key acclimations in bryophytes. We demonstrate that exogenous ABA induces NPQ in the moss Physcomitrium patens, increasing the levels of LHCSR, a key NPQ regulator, while concurrently decreasing PsbS. Exogenous ABA also enhances the xanthophyll cycle pigments, contributing to NPQ. In mutants deficient in ABA signaling components, including SNF1-related kinase 2 (SnRK2) and the transcription factor, Abscisic Acid-Insensitive 3 (ABI3), ABA-induced NPQ, LHCSR and PsbS expression, and xanthophyll cycle pigment accumulation were significantly reduced. These findings suggest that exogenous ABA enhances NPQ through the SnRK2 and ABI3-mediated signaling pathway by promoting LHCSR expression and xanthophyll cycle pigment production. We propose that the integration of ABA signaling and NPQ represent a critical evolutionary milestone, enabling early land plants to adapt and thrive in terrestrial environments.","PeriodicalId":16813,"journal":{"name":"Journal of Plant Research","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143795742","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

SUPPRESOR OF GAMMA RESPONSE 1 promotes early onset of endoreplication upon DNA double-strand breaks by inducing CCS52A1 expression in Arabidopsis roots. 抑制γ反应1通过诱导CCS52A1在拟南芥根中的表达，促进DNA双链断裂时的早期内复制。

IF 2.7 3区生物学

Journal of Plant Research Pub Date : 2025-04-07 DOI: 10.1007/s10265-025-01630-y

Toshiki Wada, Ayako N Sakamoto, Naoki Takahashi

引用次数: 0

Correction to: Contributions of lignification, tissue arrangement patterns, and cross-sectional area to whole-stem mechanical properties in Arabidopsis thaliana. 修正：拟南芥木质化、组织排列模式和横截面积对全茎机械特性的贡献。

IF 2.7 3区生物学

Journal of Plant Research Pub Date : 2025-04-07 DOI: 10.1007/s10265-025-01632-w

Mariko Asaoka, Eric Badel, Ali Ferjani, Kazuhiko Nishitani, Olivier Hamant

引用次数: 0

Exploring candidate genes related to pollen abortion in garlic (Allium sativum) based on cytological studies and transcriptome sequencing. 基于细胞学研究和转录组测序，探索大蒜花粉败育相关候选基因。

IF 2.7 3区生物学

Journal of Plant Research Pub Date : 2025-04-07 DOI: 10.1007/s10265-025-01631-x

Baoli Fan, Qian Chen, Shiyao Zhou, Yanting Zhang, Yuwen Wang, Yuntao Shang, Na Zhang, Xiaoying Liu, Zhenying Wang

{"title":"Exploring candidate genes related to pollen abortion in garlic (Allium sativum) based on cytological studies and transcriptome sequencing.","authors":"Baoli Fan, Qian Chen, Shiyao Zhou, Yanting Zhang, Yuwen Wang, Yuntao Shang, Na Zhang, Xiaoying Liu, Zhenying Wang","doi":"10.1007/s10265-025-01631-x","DOIUrl":"https://doi.org/10.1007/s10265-025-01631-x","url":null,"abstract":"The commercially cultivated garlic varieties are infertile, leading to challenges in conventional hybrid breeding. Xinjiang garlic exhibits visually normal development of both androecium and gynoecium, but most pollen grains are not viable, thus allowing for the identification of flower development-related genes through combined morphological, anatomical, and cytological methods with transcriptome analysis. The inflorescence meristem differentiation of Xinjiang garlic plants was initiated after the 6th-7th leaves emerged, implying the transition from vegetative growth to reproductive growth. With the development of flower organs after bolting, normal pollen mother cell meiosis but no viable pollen grains were detected through triphenyl tetrazolium chloride (TTC) staining. Delayed tapetal degeneration, the gap between the tapetum and the middle layer, and degenerating and aborting anther are visible during anther development. There were 25 differentially expressed MYB genes and 64 flowering pathway related genes at different stages of flower development. The R2R3-MYB genes enriched in Module 22 are involved in the development of the tapetum and pollen. The co-expression network analysis showed that most MYB genes are related to flowering regulatory genes. The expression pattern of MYB35, MYB26, MYB80 and MMD1 may cause delayed degradation of the tapetum, or abnormal development of the pollen wall leading to pollen abortion.","PeriodicalId":16813,"journal":{"name":"Journal of Plant Research","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143795749","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

Greetings from the new Editor-in-Chief of the Journal of Plant Research 2025. 《植物研究杂志2025》新任总编辑向您问好。

IF 2.7 3区生物学

Journal of Plant Research Pub Date : 2025-04-07 DOI: 10.1007/s10265-025-01635-7

Noriko Inada

引用次数: 0

Synergistic effect of alkane and membrane lipid alteration in Synechococcus elongatus PCC 7942 under salt and light stresses. 盐和光胁迫下长聚球菌PCC 7942中烷烃和膜脂改变的协同效应

IF 2.7 3区生物学

Journal of Plant Research Pub Date : 2025-03-01 Epub Date: 2024-12-31 DOI: 10.1007/s10265-024-01613-5

Arif Agung Wibowo, Koichiro Awai

{"title":"Synergistic effect of alkane and membrane lipid alteration in Synechococcus elongatus PCC 7942 under salt and light stresses.","authors":"Arif Agung Wibowo, Koichiro Awai","doi":"10.1007/s10265-024-01613-5","DOIUrl":"10.1007/s10265-024-01613-5","url":null,"abstract":"Salinity and light markedly influence cyanobacterial viability. High salinity disrupts the osmotic balance, while excess light energy affects redox potential in the cells. Regulating the ratio of saturated and unsaturated alka(e)ne and fatty acids in cyanobacteria is thought to have crucial roles in coping with these stresses by regulating membrane fluidity. In Synechococcus elongatus PCC 7942 (Syn7942), alkane is produced from fatty acid metabolites using acyl-acyl carrier protein reductase (Aar) and aldehyde-deformylating oxygenase (Ado) enzymes. However, the role of alka(e)nes and their correlation with fatty acid-related compounds, especially under salinity stress, is not yet fully understood. This study explored the significance of the natural alka(e)ne biosynthesis pathway using Syn7942. The role of alka(e)ne was assessed using single and double knockout mutants of the aar and/or ado genes in this biosynthetic process. The alka(e)ne levels and membrane lipid content exhibited an inverse relationship, correlating with cell fluidity under high-salinity and high-light conditions. The absence of alka(e)ne resulted in a severe growth phenotype of Δado and Δaar/Δado under high-salinity conditions and less severe under high-light conditions. In addition, feeding with C15:0 and/or C17:0 alkanes complemented the growth phenotype with different accumulation profiles. The Δaar mutant exhibited higher resistance to high salinity than the Syn7942 WT, indicating the importance of Ado for survival at high salinity. Overall, lipid-related compounds, especially alka(e)nes, markedly contribute to cell integrity maintenance under high-salinity conditions by regulating membrane rigidity and fluidity.","PeriodicalId":16813,"journal":{"name":"Journal of Plant Research","volume":" ","pages":"365-376"},"PeriodicalIF":2.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142909806","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

Seasonal changes in pigment content in overwintering and current-year leaves of Sasa senanensis from snowmelt to before leaf-fall of canopy deciduous trees. 雪融雪期至冠层落叶树落叶前雪沙越冬叶和年叶色素含量的季节变化

IF 2.7 3区生物学

Journal of Plant Research Pub Date : 2025-03-01 Epub Date: 2024-12-17 DOI: 10.1007/s10265-024-01607-3

Kiyomi Ono, Megumi Hashiguchi, Ryouichi Tanaka, Toshihiko Hara

{"title":"Seasonal changes in pigment content in overwintering and current-year leaves of Sasa senanensis from snowmelt to before leaf-fall of canopy deciduous trees.","authors":"Kiyomi Ono, Megumi Hashiguchi, Ryouichi Tanaka, Toshihiko Hara","doi":"10.1007/s10265-024-01607-3","DOIUrl":"10.1007/s10265-024-01607-3","url":null,"abstract":"Sasa senanensis (a dwarf bamboo), an evergreen herbaceous plant native to the cool temperate regions of eastern Asia, endures seasonal temperature fluctuations and significant variations in light intensity typical for understory plants. Following snowmelt in early spring, the light intensity received by Sasa leaves surges, then diminishes as the canopy of upper deciduous trees develops. The current-year leaves of S. senanensis unfold under these shaded conditions, rendering the preservation of overwintering leaves vital for maintaining photosynthetic productivity in early spring. This study investigated the adaptations of overwintering leaves of S. senanensis to the low temperatures and elevated light conditions typical of early spring, examining whether these leaves dissipate absorbed light energy as heat and/or reduce their antenna size in response to increased light levels. Comprehensive analyses of Fv/Fm and photosynthetic pigment compositions were conducted throughout the spring to autumn seasons from 2014 to 2017. Our results indicate that Fv/Fm in overwintering leaves was initially low in early spring but increased gradually before the onset of shading, maintaining high levels under shaded conditions across all examined years. The chlorophyll a/b ratio increased post-snowmelt and decreased with intensified shading annually, with the exception of 2015, suggesting that reductions in antenna size are not essential for Fv/Fm recovery. Furthermore, the quantities and de-epoxidation state of xanthophyll cycle pigments increased after snowmelt despite rising temperatures, then decreased with progressive shading each year, indicating that overwintering leaves adapt to early spring conditions by modulating their xanthophyll cycle pigments. This study demonstrates that the overwintering leaves of S. senanensis exhibit a flexible response in photosystem pigments to variations in the light environment.","PeriodicalId":16813,"journal":{"name":"Journal of Plant Research","volume":" ","pages":"215-230"},"PeriodicalIF":2.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142835904","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