Journal of Experimental Botany最新文献

Photoperiodic control of growth and reproduction in non-flowering plants. 光周期控制非开花植物的生长和繁殖。

IF 5.6 2区生物学

Journal of Experimental Botany Pub Date : 2024-11-22 DOI: 10.1093/jxb/erae471

Durga Prasad Biswal, Kishore Chandra Sekhar Panigrahi

引用次数: 0

Gibberellins: Extending the Green Revolution. 赤霉素：扩展绿色革命。

IF 5.6 2区生物学

Journal of Experimental Botany Pub Date : 2024-11-21 DOI: 10.1093/jxb/erae476

Janlo M Robil, Prameela Awale, Paula McSteen, Norman B Best

引用次数: 0

TORquing chromatin: the regulatory role of TOR kinase on chromatin function. TORquing chromatin：TOR 激酶对染色质功能的调控作用。

IF 5.6 2区生物学

Journal of Experimental Botany Pub Date : 2024-11-20 DOI: 10.1093/jxb/erae474

Yihan Dong, Fatemeh Aflaki, Iva Mozgova, Alexandre Berr

引用次数: 0

Investigating biological nitrogen fixation via single-cell transcriptomics. 通过单细胞转录组学研究生物固氮。

IF 5.6 2区生物学

Journal of Experimental Botany Pub Date : 2024-11-20 DOI: 10.1093/jxb/erae454

Wendell J Pereira, Daniel Conde, Noé Perron, Henry W Schmidt, Christopher Dervinis, Rafael E Venado, Jean-Michel Ané, Matias Kirst

{"title":"Investigating biological nitrogen fixation via single-cell transcriptomics.","authors":"Wendell J Pereira, Daniel Conde, Noé Perron, Henry W Schmidt, Christopher Dervinis, Rafael E Venado, Jean-Michel Ané, Matias Kirst","doi":"10.1093/jxb/erae454","DOIUrl":"https://doi.org/10.1093/jxb/erae454","url":null,"abstract":"The extensive use of nitrogen fertilizers has detrimental environmental consequences, and it is fundamental for society to explore sustainable alternatives. One promising avenue is engineering root nodule symbiosis, a naturally occurring process in certain plant species within the nitrogen-fixing clade, into non-leguminous crops. Advancements in single-cell transcriptomics provide unprecedented opportunities to dissect the molecular mechanisms underlying root nodule symbiosis at the cellular level. This review summarizes key findings from single-cell studies in Medicago truncatula, Lotus japonicus, and Glycine max. We highlight how these studies address fundamental questions about the development of root nodule symbiosis, including the following findings: Single-cell transcriptomics has revealed a conserved transcriptional program in root hair and cortical cells during rhizobial infection, suggesting a common infection pathway across legume species. Characterization of determinate and indeterminate nodules using single-cell technologies supports the compartmentalization of nitrogen fixation, assimilation, and transport into distinct cell populations. Single-cell transcriptomics data has enabled the identification of novel root nodule symbiosis genes and provided new approaches for prioritizing candidate genes for functional characterization. Trajectory inference and RNA velocity analyses of single-cell transcriptomics data have allowed the reconstruction of cellular lineages and dynamic transcriptional states during root nodule symbiosis.","PeriodicalId":15820,"journal":{"name":"Journal of Experimental Botany","volume":" ","pages":""},"PeriodicalIF":5.6,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142675844","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

Innovative modeling on the effects of low-temperature stress on rice yields. 低温胁迫对水稻产量影响的创新模型。

IF 5.6 2区生物学

Journal of Experimental Botany Pub Date : 2024-11-18 DOI: 10.1093/jxb/erae452

Yanying Shi, Haoyu Ma, Tao Li, Erjing Guo, Tianyi Zhang, Xijuan Zhang, Xianli Yang, Lizhi Wang, Shukun Jiang, Yuhan Deng, Kaixin Guan, Mingzhe Li, Zhijuan Liu, Xiaoguang Yang

{"title":"Innovative modeling on the effects of low-temperature stress on rice yields.","authors":"Yanying Shi, Haoyu Ma, Tao Li, Erjing Guo, Tianyi Zhang, Xijuan Zhang, Xianli Yang, Lizhi Wang, Shukun Jiang, Yuhan Deng, Kaixin Guan, Mingzhe Li, Zhijuan Liu, Xiaoguang Yang","doi":"10.1093/jxb/erae452","DOIUrl":"10.1093/jxb/erae452","url":null,"abstract":"The increasing frequency and intensity of low-temperature events in temperate and cold rice production regions threaten rice yields under climate change. While process-based crop models can project climate impacts on rice yield, their accuracy under low-temperature conditions has not been well-evaluated. Our six-year chamber experiments revealed that low temperatures reduce spikelet fertility from panicle initiation to flowering, grain number per spike during panicle development, and grain weight during grain filling. We examined the algorithms of spikelet fertility response to temperature used in crop models. Results showed that simulation performance is poor for crop yields if the same function was used at different growth stages outside the booting stage. Indeed, we replaced a parameter spikelet fertility algorithm of the ORYZA model and developed the function of estimating grain number per spike and grain weight. After that, the improved equation algorithm was applied to 10 rice growth models. New functions considered the harmful effects of low temperatures on rice yield at different stages. In addition, the threshold temperatures of the cold tolerance were set for different rice varieties. The improved algorithm enhances the model's ability to simulate rice yields under climate change, providing a more reliable tool for adapting rice production to future climatic challenges.","PeriodicalId":15820,"journal":{"name":"Journal of Experimental Botany","volume":" ","pages":""},"PeriodicalIF":5.6,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142668157","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

Phytochrome-interacting factors PIF4 and PIF5 directly regulate autophagy during leaf senescence in Arabidopsis. 拟南芥叶片衰老过程中植物色素相互作用因子PIF4和PIF5直接调控自噬。

IF 5.6 2区生物学

Journal of Experimental Botany Pub Date : 2024-11-16 DOI: 10.1093/jxb/erae469

Juhyeon Lee, Myeong Hoon Kang, Da-Min Choi, Anne Marmagne, Jeehye Park, Heeho Lee, Eunha Gwak, Jong Chan Lee, Jeong-Il Kim, Céline Masclaux-Daubresse, Pyung Ok Lim

{"title":"Phytochrome-interacting factors PIF4 and PIF5 directly regulate autophagy during leaf senescence in Arabidopsis.","authors":"Juhyeon Lee, Myeong Hoon Kang, Da-Min Choi, Anne Marmagne, Jeehye Park, Heeho Lee, Eunha Gwak, Jong Chan Lee, Jeong-Il Kim, Céline Masclaux-Daubresse, Pyung Ok Lim","doi":"10.1093/jxb/erae469","DOIUrl":"https://doi.org/10.1093/jxb/erae469","url":null,"abstract":"During leaf senescence, autophagy plays a critical role by removing damaged cellular components and participating in nutrient remobilization to sink organs. However, how AUTOPHGAY (ATG) genes are regulated during natural leaf senescence remains largely unknown. In this study, we attempted to identify upstream transcriptional regulator(s) of ATGs and their molecular basis during leaf senescence in Arabidopsis through the combined analyses of promoter binding, autophagy flux, and genetic interactions. We found that PIF4 and PIF5 (PIF4/PIF5) directly bind to the promoters of the ATG5, ATG12a, ATG12b, ATG8a, ATG8e, ATG8f, and ATG8g, inducing their transcription. These target ATGs are downregulated in pif4, pif5, and pif4pif5 mutants, resulting in decreased autophagic activity and slower degradation of chloroplast proteins and chlorophyll. Conversely, overexpression of ATG8s accelerated protein degradation with early leaf senescence. Moreover, our data suggests partial suppression of the pif4pif5 phenotype by ATG8a overexpression. PIF4/PIF5 also influences senescence induced by nutrient starvation, another hallmark of the autophagy pathway. Furthermore, we observed that the PIF4/PIF5-ATG regulatory module may contribute to seed maturation. Our study not only unveils transcriptional regulators of autophagy in natural leaf senescence but also underscores the potential role of PIF4/PIF5 as functional regulators in leaf senescence and nutrient remobilization.","PeriodicalId":15820,"journal":{"name":"Journal of Experimental Botany","volume":" ","pages":""},"PeriodicalIF":5.6,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142644059","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

Diverse roles of phytohormonal signaling in modulating plant-virus interaction. 植物激素信号在调节植物与病毒相互作用中的不同作用

IF 5.6 2区生物学

Journal of Experimental Botany Pub Date : 2024-11-16 DOI: 10.1093/jxb/erae468

Shambhavi Sharma, Manoj Prasad

{"title":"Diverse roles of phytohormonal signaling in modulating plant-virus interaction.","authors":"Shambhavi Sharma, Manoj Prasad","doi":"10.1093/jxb/erae468","DOIUrl":"https://doi.org/10.1093/jxb/erae468","url":null,"abstract":"Virus infection brings about changes in the transcriptome, proteome and metabolome status of the infected plant wherein substantial alterations in the abundance of phytohormones and associated components involved in their signaling pathways have been observed. In the recent years, extensive research in the field of plant virology has showcased the undisputable significance of phytohormone signaling during plant-virus interactions. Apart from acting as growth regulators, phytohormones elicit robust immune response, which restricts the viral multiplication within the plant as well as its propagation by vector. Interestingly, these pathways have been shown to not only act as isolated mechanisms but as complex intertwined regulatory cascades where, the cross-talk among different phytohormones and with other antiviral pathways takes place during plant-virus interplay. Viruses cleverly disrupt phytohormone homeostasis via their multifunctional effectors that seems to be smart approach adopted by viruses to circumvent phytohormone-mediated plant immune responses. In this review, we summarize the current understanding of role of phytohormone signaling pathways during plant-virus interaction in activating antiviral immune responses of plant and also, how viruses exploit these signaling pathways favoring their pathogenesis.","PeriodicalId":15820,"journal":{"name":"Journal of Experimental Botany","volume":" ","pages":""},"PeriodicalIF":5.6,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142644057","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

Accounting for the impact of genotype and environment on variation in leaf respiration of wheat in Mexico and Australia. 墨西哥和澳大利亚小麦的基因型和环境对叶片呼吸变化的影响。

IF 5.6 2区生物学

Journal of Experimental Botany Pub Date : 2024-11-16 DOI: 10.1093/jxb/erae449

O Gaju, K J Bloomfield, A C A Negrini, A F Bowerman, D Cullerne, B C Posch, C Bryant, Y Fan, M Spence, B Stone, M Gilliham, R T Furbank, G Molero, B J Pogson, K Mathews, A H Millar, A L Pearson, M P Reynolds, E Stroeher, N L Taylor, M H Turnbull, O K Atkin

{"title":"Accounting for the impact of genotype and environment on variation in leaf respiration of wheat in Mexico and Australia.","authors":"O Gaju, K J Bloomfield, A C A Negrini, A F Bowerman, D Cullerne, B C Posch, C Bryant, Y Fan, M Spence, B Stone, M Gilliham, R T Furbank, G Molero, B J Pogson, K Mathews, A H Millar, A L Pearson, M P Reynolds, E Stroeher, N L Taylor, M H Turnbull, O K Atkin","doi":"10.1093/jxb/erae449","DOIUrl":"https://doi.org/10.1093/jxb/erae449","url":null,"abstract":"An approach to improving radiation use efficiency (RUE) in wheat is to screen for variability in rates of leaf respiration in darkness (Rdark). We used a high-throughput system to quantify variation in Rdark among a diverse range of spring wheat genotypes (301 lines) grown in two countries (Mexico and Australia) and two seasons (2017 and 2018), and in doing so quantify the relative importance of genotype (G) and environment (E) in influencing variations in leaf Rdark. Through careful design, residual (unexplained) variation represented less than 10% of the total observed. Up to a third of the variation in Rdark (and related traits) was under genetic control. This suggests opportunities for breeders to use Rdark as a novel selection tool. In addition, E accounted for more than half of the total variation in area-based rates of Rdark. Here, the day of measurement was crucial, suggesting that day-to-day variations in the environment influence rates of Rdark measured at a common temperature. Overall, this study provides new insights into the role G and E play in determining variation in rates of leaf Rdark of one of the most important cereal crops, with implications for future improvements in carbon use efficiency and yield.","PeriodicalId":15820,"journal":{"name":"Journal of Experimental Botany","volume":" ","pages":""},"PeriodicalIF":5.6,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142644055","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

Passive stomatal closure under extreme drought in an angiosperm species. 一种被子植物在极端干旱条件下的被动气孔关闭。

IF 8.3 2区生物学

Journal of Experimental Botany Pub Date : 2024-11-15 DOI: 10.1093/jxb/erad510

Scott A M McAdam, Anju Manandhar, Cade N Kane, Joel A Mercado-Reyes

{"title":"Passive stomatal closure under extreme drought in an angiosperm species.","authors":"Scott A M McAdam, Anju Manandhar, Cade N Kane, Joel A Mercado-Reyes","doi":"10.1093/jxb/erad510","DOIUrl":"10.1093/jxb/erad510","url":null,"abstract":"The phytohormone abscisic acid (ABA) plays a major role in closing the stomata of angiosperms. However, recent reports of some angiosperm species having a peaking-type ABA dynamic, in which under extreme drought ABA levels decline to pre-stressed levels, raises the possibility that passive stomatal closure by leaf water status alone can occur in species from this lineage. To test this hypothesis, we conducted instantaneous rehydration experiments in the peaking-type species Umbellularia californica through a long-term drought, in which ABA levels declined to pre-stress levels, yet stomata remain closed. We found that when ABA levels were lowest during extreme drought, stomata reopen rapidly to maximum rates of gas exchange on instantaneous rehydration, suggesting that the stomata of U. californica were passively closed by leaf water status alone. This contrasts with leaves early in drought, in which ABA levels were highest and stomata did not reopen on instantaneous rehydration. The transition from ABA-driven stomatal closure to passively driven stomatal closure as drought progresses in this species occurs at very low water potentials facilitated by highly embolism-resistant xylem. These results have important implications for understanding stomatal control during drought in angiosperms.","PeriodicalId":15820,"journal":{"name":"Journal of Experimental Botany","volume":" ","pages":"6850-6855"},"PeriodicalIF":8.3,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139058409","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

High water use efficiency due to maintenance of photosynthetic capacity in sorghum under water stress. 高粱在水分胁迫下保持光合能力，从而提高了水分利用效率。

IF 5.6 2区生物学

Journal of Experimental Botany Pub Date : 2024-11-15 DOI: 10.1093/jxb/erae418

Yazen Al-Salman, Francisco Javier Cano, Emma Mace, David Jordan, Michael Groszmann, Oula Ghannoum

{"title":"High water use efficiency due to maintenance of photosynthetic capacity in sorghum under water stress.","authors":"Yazen Al-Salman, Francisco Javier Cano, Emma Mace, David Jordan, Michael Groszmann, Oula Ghannoum","doi":"10.1093/jxb/erae418","DOIUrl":"10.1093/jxb/erae418","url":null,"abstract":"Environmental change requires more crop production per water use to meet the rising global food demands. However, improving crop intrinsic water use efficiency (iWUE) usually comes at the expense of carbon assimilation. Sorghum is a key crop in many vulnerable agricultural systems with higher tolerance to water stress (WS) than most widely planted crops. To investigate physiological controls on iWUE and its inheritance in sorghum, we screened 89 genotypes selected based on inherited haplotypes from an elite line or five exotics lines, containing a mix of geographical origins and dry versus milder climates, which included different aquaporin (AQP) alleles. We found significant variation among key highly heritable gas exchange and hydraulic traits, with some being significantly affected by variation in haplotypes among parental lines. Plants with a higher proportion of the non-stomatal component of iWUE still maintained iWUE under WS by maintaining photosynthetic capacity, independently of reduction in leaf hydraulic conductance. Haplotypes associated with two AQPs (SbPIP1.1 and SbTIP3.2) influenced iWUE and related traits. These findings expand the range of traits that bridge the trade-off between iWUE and productivity in C4 crops, and provide possible genetic regions that can be targeted for breeding.","PeriodicalId":15820,"journal":{"name":"Journal of Experimental Botany","volume":" ","pages":"6778-6795"},"PeriodicalIF":5.6,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11565205/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142390989","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