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学者姓名：陈志长
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Abstract ：
Symbiotic nitrogen fixation (SNF) facilitated by the interaction between legumes and rhizobia is a welldocumented and eco-friendly alternative to chemical nitrogen fertilizers. Host plants obtain fixed nitrogen from rhizobia by providing carbon and mineral nutrients. These mineral nutrients, which are mostly in the form of metal ions, are implicated in various stages of the SNF process. This review describes the functional roles played by metal ions in nodule formation and nitrogen fixation and specifically addresses their transport mechanisms and associated transporters within root nodules. Future research directions and potential strategies for enhancing SNF efficiency are also discussed.
Keyword ：
legume legume metal ion metal ion nitrogen fixation nitrogen fixation nodule nodule transport transport
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| GB/T 7714 | Li, Yuan , Liu, Qian , Zhang, Dan-Xun et al. Metal nutrition and transport in the process of symbiotic nitrogen fixation [J]. | PLANT COMMUNICATIONS , 2024 , 5 (4) . |
| MLA | Li, Yuan et al. "Metal nutrition and transport in the process of symbiotic nitrogen fixation" . | PLANT COMMUNICATIONS 5 . 4 (2024) . |
| APA | Li, Yuan , Liu, Qian , Zhang, Dan-Xun , Zhang, Zhuo-Yan , Xu, Ao , Jiang, Yuan-Long et al. Metal nutrition and transport in the process of symbiotic nitrogen fixation . | PLANT COMMUNICATIONS , 2024 , 5 (4) . |
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| GB/T 7714 | Chen, Zhi-Chang , Huang, Chao-Feng . Sustainable utilization of acid soils [J]. | PLANT AND SOIL , 2024 , 504 (1-2) : 1-3 . |
| MLA | Chen, Zhi-Chang et al. "Sustainable utilization of acid soils" . | PLANT AND SOIL 504 . 1-2 (2024) : 1-3 . |
| APA | Chen, Zhi-Chang , Huang, Chao-Feng . Sustainable utilization of acid soils . | PLANT AND SOIL , 2024 , 504 (1-2) , 1-3 . |
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Nourishing the embryo with endosperm and enclosing both embryo and endosperm in the seed coat are two important evolutionary innovations. Seed coat is conventionally viewed as a protective layer that functions after the seed has matured. Here, we challenge this notion by showing that a subregion of the seed coat, termed the chalazal seed coat (CZSC), is geared to gate seed nutrition loading in developing seeds. The CZSC develops the coordinative system comprising the apoplastic isolation, mediated by the restricted suberization, and the active transport, mediated by the specific expression of a variety of transporters, at as early as the globular embryo stage in both Arabidopsis and soybean seeds. This coordinated system in the CZSC disrupts the vascular continuum to the maternal tissues and forces the nutrient transport into selective and active absorption. We further reveal that the precision of the spatiotemporal suberin deposition and transporter expression is controlled by the regulatory hierarchy of SHR-MYBs cascades. Our results provide a mechanistic insight into the assimilate accumulation in dicot seeds.
Keyword ：
active transport active transport chalazal seed coat chalazal seed coat seed storage seed storage SHORT-ROOT SHORT-ROOT suberin suberin
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| GB/T 7714 | Li, Meng , Li, Qianfang , Li, Shuang et al. SHORT-ROOT specifically functions in the chalazal region to modulate assimilate partitioning into seeds [J]. | PLANT JOURNAL , 2024 , 120 (5) : 2031-2044 . |
| MLA | Li, Meng et al. "SHORT-ROOT specifically functions in the chalazal region to modulate assimilate partitioning into seeds" . | PLANT JOURNAL 120 . 5 (2024) : 2031-2044 . |
| APA | Li, Meng , Li, Qianfang , Li, Shuang , Niu, Xufang , Xu, Huimin , Li, Pengxue et al. SHORT-ROOT specifically functions in the chalazal region to modulate assimilate partitioning into seeds . | PLANT JOURNAL , 2024 , 120 (5) , 2031-2044 . |
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Elevating Mg2+ levels in rice cytoplasm by genetic modification or exogenous supply increases salicylic acid accumulation and enhances broad-spectrum resistance to pathogens.
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| GB/T 7714 | Zeng, Wenzhi , Zhang, Yanjun , Tian, Xinyue et al. Increased cytoplasmic Mg2+ level contributes to rice salicylic acid accumulation and broad-spectrum resistance [J]. | PLANT PHYSIOLOGY , 2024 , 195 (4) : 2515-2519 . |
| MLA | Zeng, Wenzhi et al. "Increased cytoplasmic Mg2+ level contributes to rice salicylic acid accumulation and broad-spectrum resistance" . | PLANT PHYSIOLOGY 195 . 4 (2024) : 2515-2519 . |
| APA | Zeng, Wenzhi , Zhang, Yanjun , Tian, Xinyue , Li, Wenyan , Meng, Han , Zhou, Yuanchang et al. Increased cytoplasmic Mg2+ level contributes to rice salicylic acid accumulation and broad-spectrum resistance . | PLANT PHYSIOLOGY , 2024 , 195 (4) , 2515-2519 . |
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Symbiotic nitrogen fixation (SNF) in legume-rhizobia serves as a sustainable source of nitrogen (N) in agriculture. However, the addition of inorganic N fertilizers significantly inhibits SNF, and the underlying mechanisms remain not-well understood. Here, we report that inorganic N disrupts iron (Fe) homeostasis in soybean nodules, leading to a decrease in SNF efficiency. This disruption is attributed to the inhibition of the Fe transporter genes Natural Resistance-Associated Macrophage Protein 2a and 2b (GmNRAMP2a&2b) by inorganic N. GmNRAMP2a&2b are predominantly localized at the tonoplast of uninfected nodule tissues, affecting Fe transfer to infected cells and consequently, modulating SNF efficiency. In addition, we identified a pair of N-signal regulators, nitrogen-regulated GARP-type transcription factors 1a and 1b (GmNIGT1a&1b), that negatively regulate the expression of GmNRAMP2a&2b, which establishes a link between N signaling and Fe homeostasis in nodules. Our findings reveal a plausible mechanism by which soybean adjusts SNF efficiency through Fe allocation in response to fluctuating inorganic N conditions, offering valuable insights for optimizing N and Fe management in legume-based agricultural systems. Symbiotic nitrogen fixation is a tightly regulated process serving as a sustainable source of nitrogen (N) in agriculture. Here it is shown that external N sources precisely regulate N fixation efficiency by modulating iron transport in nodules of legumes.
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| GB/T 7714 | Zhou, Min , Li, Yuan , Yao, Xiao-Lei et al. Inorganic nitrogen inhibits symbiotic nitrogen fixation through blocking NRAMP2-mediated iron delivery in soybean nodules [J]. | NATURE COMMUNICATIONS , 2024 , 15 (1) . |
| MLA | Zhou, Min et al. "Inorganic nitrogen inhibits symbiotic nitrogen fixation through blocking NRAMP2-mediated iron delivery in soybean nodules" . | NATURE COMMUNICATIONS 15 . 1 (2024) . |
| APA | Zhou, Min , Li, Yuan , Yao, Xiao-Lei , Zhang, Jing , Liu, Sheng , Cao, Hong-Rui et al. Inorganic nitrogen inhibits symbiotic nitrogen fixation through blocking NRAMP2-mediated iron delivery in soybean nodules . | NATURE COMMUNICATIONS , 2024 , 15 (1) . |
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Phosphorus (P), a critical macronutrient for plant growth and reproduction, is primarily acquired and translocated in the form of inorganic phosphate (Pi) by roots. Pi deficiency is widespread in many natural ecosystems, including forest plantations, due to its slow movement and easy fixation in soils. Plants have evolved complex and delicate regulation mechanisms on molecular and physiological levels to cope with Pi deficiency. Over the past two decades, extensive research has been performed to decipher the underlying molecular mechanisms that regulate the Pi starvation responses (PSR) in plants. This review highlights the prospects of Pi uptake, transport, and signaling in woody plants based on the backbone of model and crop plants. In addition, this review also highlights the interactions between phosphorus and other mineral nutrients such as Nitrogen (N) and Iron (Fe). Finally, this review discusses the challenges and potential future directions of Pi research in woody plants, including characterizing the woody-specific regulatory mechanisms of Pi signaling and evaluating the regulatory roles of Pi on woody-specific traits such as wood formation and ultimately generating high Phosphorus Use Efficiency (PUE) woody plants.
Keyword ：
Phosphorus Phosphorus Signaling Signaling Transport Transport Uptake Uptake Woody Plants Woody Plants
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| GB/T 7714 | Xingyan Fang , Deming Yang , Lichuan Deng et al. Phosphorus uptake, transport, and signaling in woody and model plants [J]. | Forestry Research , 2024 , 017 (4) : 0 . |
| MLA | Xingyan Fang et al. "Phosphorus uptake, transport, and signaling in woody and model plants" . | Forestry Research 017 . 4 (2024) : 0 . |
| APA | Xingyan Fang , Deming Yang , Lichuan Deng , Yaxin Zhang , Zhiyong Lin , Jingjing Zhou et al. Phosphorus uptake, transport, and signaling in woody and model plants . | Forestry Research , 2024 , 017 (4) , 0 . |
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Abstract ：
Symbiotic nitrogen fixation provides large amounts of nitrogen for global agricultural systems with little environmental or economic costs. The basis of symbiosis is the nutrient exchange occurring between legumes and rhizobia, but key regulators controlling nutrient exchange are largely unknown. Here, we reveal that magnesium (Mg), an important nutrient factor that preferentially accumulates in inner cortical cells of soybean nodules, shows the most positive correlation with nodule carbon (C) import and nitrogen (N) export. We further identified a pair of Mg transporter genes, GmMGT4 and GmMGT5, that are specifically expressed in the nodule cortex, modulating both nodule Mg import and C-N transport processes. The GmMGT4&5-dependent Mg import activates the activity of a plasmodesmata-located beta-1,3-glucanase GmBG2 and consequently keeps plasmodesmata permeable for C-N transport in nodule inner cortical cells. Our studies discovered an important regulating pathway for host plants fine-tuning nodule C-N trading to achieve optimal growth, which may be helpful for optimizing nutrient management for soybean production.
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| GB/T 7714 | Cao, Hong-Rui , Peng, Wen-Ting , Nie, Miao-Miao et al. Carbon-nitrogen trading in symbiotic nodules depends on magnesium import [J]. | CURRENT BIOLOGY , 2022 , 32 (20) : 4337-, . |
| MLA | Cao, Hong-Rui et al. "Carbon-nitrogen trading in symbiotic nodules depends on magnesium import" . | CURRENT BIOLOGY 32 . 20 (2022) : 4337-, . |
| APA | Cao, Hong-Rui , Peng, Wen-Ting , Nie, Miao-Miao , Bai, Shuang , Chen, Chun-Qu , Liu, Qian et al. Carbon-nitrogen trading in symbiotic nodules depends on magnesium import . | CURRENT BIOLOGY , 2022 , 32 (20) , 4337-, . |
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Seeds are important to plant propagation and represent the major food source for human diets. The storage in seeds derives from the active transport and gating in the chalazal seed coat (CZSC) of the seeds. No specific regulators of CZSC have been identified so far. Here, we report that the SHORT ROOT (SHR) is specifically expressed in the CZSC to promote the restricted suberization in the seed. Both SHR mutants and specific disruption or complementation of SHR in the CZSC support its key role in suberin regulation in the CZSC. We further identified five MYB transcription factors that are activated by SHR in the CZSC and function downstream of SHR during CZSC suberization. Suberin deficiency in the CZSC affected its gating ability, resulting in the significant decrease of stored assimilates in seeds. Interestingly, SHR-MYBs network also affected the suberin deposition in the outer integument and the seed coat integrity in a non-cellular autonomic action, which mostly arose from the dramatic reduction of long-chain fatty acid and surcose storage in seeds. Our findings underscore the key role of CZSC in seeds and provide the significant insights into the specific regulation of CZSC and assimilate partitioning in seeds. © 2022, The Authors. All rights reserved.
Keyword ：
Fatty acids Fatty acids Food storage Food storage Plants (botany) Plants (botany) Seed Seed Transcription factors Transcription factors
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| GB/T 7714 | Li, Meng , Wang, Mengxue , Li, Shuang et al. SHORT-ROOT Functions Specifically in Chalazal Region to Modulate Assimilate Partitioning Into Seeds [J]. | SSRN , 2022 . |
| MLA | Li, Meng et al. "SHORT-ROOT Functions Specifically in Chalazal Region to Modulate Assimilate Partitioning Into Seeds" . | SSRN (2022) . |
| APA | Li, Meng , Wang, Mengxue , Li, Shuang , Niu, Xufang , Xu, Huimin , Li, Pengxue et al. SHORT-ROOT Functions Specifically in Chalazal Region to Modulate Assimilate Partitioning Into Seeds . | SSRN , 2022 . |
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Photosynthesis,which provides oxygen and energy for all living organisms,is circadian regulated.Photosynthesis-associated metabolism must tightly coordinate with the circadian clock to maximize the ef-ficiency of the light-energy capture and carbon fixation.However,the molecular basis for the interplay of photosynthesis and the circadian clock is not fully understood,particularly in crop plants.Here,we report two central oscillator genes of circadian clock,OsPRR95 and OsPRR59 in rice,which function as transcrip-tional repressors to negatively regulate the rhythmic expression of OsMGT3 encoding a chloroplast-localized Mg2+transporter.OsMGT3-dependent rhythmic Mg fluctuations modulate carbon fixation and consequent sugar output in rice chloroplasts.Furthermore,sugar triggers the increase of superoxide,which may act as a feedback signal to positively regulate the expression of OsPRR95 and OsPRR59.Taken together,our re-sults reveal a negative-feedback loop that strengthens the crosstalk between photosynthetic carbon fixation and the circadian clock,which may improve plan adaptation and performance in fluctuating environments.
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| GB/T 7714 | Chun-Qu Chen , Xin-Yue Tian , Jian Li et al. Two central circadian oscillators OsPRR59 and OsPRR95 modulate magnesium homeostasis and carbon fixation in rice [J]. | 分子植物（英文版） , 2022 , 15 (10) : 1602-1614 . |
| MLA | Chun-Qu Chen et al. "Two central circadian oscillators OsPRR59 and OsPRR95 modulate magnesium homeostasis and carbon fixation in rice" . | 分子植物（英文版） 15 . 10 (2022) : 1602-1614 . |
| APA | Chun-Qu Chen , Xin-Yue Tian , Jian Li , Shuang Bai , Zhuo-Yan Zhang , Yuan Li et al. Two central circadian oscillators OsPRR59 and OsPRR95 modulate magnesium homeostasis and carbon fixation in rice . | 分子植物（英文版） , 2022 , 15 (10) , 1602-1614 . |
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武夷岩茶是一种传统名优乌龙茶，其品质差异具有明显的地域性。本研究旨在探索不同产地武夷岩茶茶青中矿质养分的差异规律，以期了解茶青养分对武夷岩茶品质的贡献。共采集武夷山112个茶园的茶青和土壤样品，主要测定了茶青中12种矿质元素和土壤中5项肥力指标（pH、碱解氮、有效磷、速效钾和有机质）。通过主成分分析发现，不同产地茶青矿质元素差异明显；利用随机森林分析，明确了不同岩区的茶青中磷、铜和氮元素的差异贡献最大，且总体上浓度由高到低依次为洲茶区、半岩区、正岩区，表明高品质的正岩茶中存在较低浓度的磷、铜和氮；皮尔森相关分析显示，土壤肥力5项指标与茶青中上述三种元素浓度相关性较弱，说明茶青养分受到综合环境因素的影响。综上所述，茶青中磷、铜和氮的水平与武夷岩茶的品质存在一定的负相关，可为茶园土壤养分管理提供参考依据。
Keyword ：
土壤肥力 土壤肥力 地域性 地域性 武夷岩茶 武夷岩茶 矿质元素 矿质元素 茶叶品质 茶叶品质
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| GB/T 7714 | 薛俊鹏 , 卓座品 , 刘扬 et al. 武夷岩茶中矿质养分的地域性差异及影响因素 [J]. | 土壤学报 , 2022 , 59 (02) : 528-535 . |
| MLA | 薛俊鹏 et al. "武夷岩茶中矿质养分的地域性差异及影响因素" . | 土壤学报 59 . 02 (2022) : 528-535 . |
| APA | 薛俊鹏 , 卓座品 , 刘扬 , 周志 , 黄泓晶 , 许锐能 et al. 武夷岩茶中矿质养分的地域性差异及影响因素 . | 土壤学报 , 2022 , 59 (02) , 528-535 . |
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