Rice Science最新文献

英文中文

Next Generation Nutrition: Genomic and Molecular Breeding Innovations for Iron and Zinc Biofortification in Rice 下一代营养：水稻铁锌生物强化的基因组与分子育种创新

IF 5.6 2区农林科学 Q1 AGRONOMY

Rice Science

Pub Date : 2024-09-01 DOI: 10.1016/j.rsci.2024.04.008

Global efforts to address malnutrition and hidden hunger, particularly prevalent in low- and middle-income countries, have intensified, with a focus on enhancing the nutritional content of staple crops like rice. Despite serving as a staple for over half of the world’s population, rice falls short in meeting daily nutritional requirements, especially for iron (Fe) and zinc (Zn). Genetic resources, such as wild rice species and specific rice varieties, offer promising avenues for enhancing Fe and Zn content. Additionally, molecular breeding approaches have identified key genes and loci associated with Fe and Zn accumulation in rice grains. This review explores the genetic resources and molecular mechanisms underlying Fe and Zn accumulation in rice grains. The functional genomics involved in Fe uptake, transport, and distribution in rice plants have revealed key genes such as OsFRO1, OsIRT1, and OsNAS3. Similarly, genes associated with Zn uptake and translocation, including OsZIP11 and OsNRAMP1, have been identified. Transgenic approaches, leveraging transporter gene families and genome editing technologies, offer promising avenues for enhancing Fe and Zn content in rice grains. Moreover, strategies for reducing phytic acid (PA) content, a known inhibitor of mineral bioavailability, have been explored, including the identification of low-PA mutants and natural variants. The integration of genomic information, including whole-genome resequencing and pan-genome analyses, provides valuable insights into the genetic basis of micronutrient traits and facilitates targeted breeding efforts. Functional genomics studies have elucidated the molecular mechanisms underlying Fe uptake and translocation in rice. Furthermore, transgenic and genome editing techniques have shown promise in enhancing Fe and Zn content in rice grains through the manipulation of key transporter genes. Overall, the integration of multi-omics approaches holds significant promise for addressing global malnutrition and hidden hunger by enhancing the nutritional quality of rice, thereby contributing to improved food and nutritional security worldwide.

全球正在加紧努力解决营养不良和隐性饥饿问题，尤其是中低收入国家普遍存在的问题，重点是提高大米等主食作物的营养成分。尽管大米是世界上一半以上人口的主食，但仍无法满足日常营养需求，尤其是铁（Fe）和锌（Zn）的需求。野生稻种和特定水稻品种等遗传资源为提高铁和锌的含量提供了前景广阔的途径。此外，分子育种方法已经确定了与水稻谷粒中铁和锌积累相关的关键基因和位点。本综述探讨了水稻籽粒中铁和锌积累的遗传资源和分子机制。参与水稻植株铁吸收、转运和分布的功能基因组学发现了一些关键基因，如 OsFRO1、OsIRT1 和 OsNAS3。同样，与锌的吸收和转运有关的基因，包括 OsZIP11 和 OsNRAMP1，也已被发现。利用转运体基因家族和基因组编辑技术的转基因方法，为提高水稻籽粒中铁和锌的含量提供了前景广阔的途径。此外，还探索了降低植酸（PA）含量的策略，包括鉴定低植酸突变体和天然变体，植酸是已知的矿物质生物利用率抑制剂。基因组信息的整合，包括全基因组重测序和泛基因组分析，为了解微量营养素性状的遗传基础提供了宝贵的见解，并促进了有针对性的育种工作。功能基因组学研究阐明了水稻铁吸收和转运的分子机制。此外，转基因和基因组编辑技术已显示出通过操纵关键转运体基因提高水稻籽粒中铁和锌含量的前景。总之，多组学方法的整合有望通过提高水稻的营养质量来解决全球营养不良和隐性饥饿问题，从而为改善全球粮食和营养安全做出贡献。

{"title":"Next Generation Nutrition: Genomic and Molecular Breeding Innovations for Iron and Zinc Biofortification in Rice","authors":"","doi":"10.1016/j.rsci.2024.04.008","DOIUrl":"10.1016/j.rsci.2024.04.008","url":null,"abstract":"<div><div>Global efforts to address malnutrition and hidden hunger, particularly prevalent in low- and middle-income countries, have intensified, with a focus on enhancing the nutritional content of staple crops like rice. Despite serving as a staple for over half of the world’s population, rice falls short in meeting daily nutritional requirements, especially for iron (Fe) and zinc (Zn). Genetic resources, such as wild rice species and specific rice varieties, offer promising avenues for enhancing Fe and Zn content. Additionally, molecular breeding approaches have identified key genes and loci associated with Fe and Zn accumulation in rice grains. This review explores the genetic resources and molecular mechanisms underlying Fe and Zn accumulation in rice grains. The functional genomics involved in Fe uptake, transport, and distribution in rice plants have revealed key genes such as <em>OsFRO1</em>, <em>OsIRT1</em>, and <em>OsNAS3</em>. Similarly, genes associated with Zn uptake and translocation, including <em>OsZIP11</em> and <em>OsNRAMP1</em>, have been identified. Transgenic approaches, leveraging transporter gene families and genome editing technologies, offer promising avenues for enhancing Fe and Zn content in rice grains. Moreover, strategies for reducing phytic acid (PA) content, a known inhibitor of mineral bioavailability, have been explored, including the identification of low-PA mutants and natural variants. The integration of genomic information, including whole-genome resequencing and pan-genome analyses, provides valuable insights into the genetic basis of micronutrient traits and facilitates targeted breeding efforts. Functional genomics studies have elucidated the molecular mechanisms underlying Fe uptake and translocation in rice. Furthermore, transgenic and genome editing techniques have shown promise in enhancing Fe and Zn content in rice grains through the manipulation of key transporter genes. Overall, the integration of multi-omics approaches holds significant promise for addressing global malnutrition and hidden hunger by enhancing the nutritional quality of rice, thereby contributing to improved food and nutritional security worldwide.</div></div>","PeriodicalId":56069,"journal":{"name":"Rice Science","volume":"31 5","pages":"Pages 526-544"},"PeriodicalIF":5.6,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141033035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Estimating Key Phenological Dates of Multiple Rice Accessions Using Unmanned Aerial Vehicle-Based Plant Height Dynamics for Breeding 利用基于无人机的植株高度动态估算多个水稻品种的关键物候期，促进育种工作

IF 5.6 2区农林科学 Q1 AGRONOMY

Rice Science

Pub Date : 2024-09-01 DOI: 10.1016/j.rsci.2024.04.007

Efficient and high-quality estimation of key phenological dates in rice is of great significance in breeding work. Plant height (PH) dynamics are valuable for estimating phenological dates. However, research on estimating the key phenological dates of multiple rice accessions based on PH dynamics has been limited. In 2022, field traits were collected using unmanned aerial vehicle (UAV)-based images across 435 plots, including 364 rice varieties. PH, dates of initial heading (IH) and full heading (FH), and panicle initiation (PI), and growth period after transplanting (GPAT) were collected during the rice growth stage. PHs were extracted using a digital surface model (DSM) and fitted using Fourier and logistic models. Machine learning algorithms, including multiple linear regression, random forest (RF), support vector regression, least absolute shrinkage and selection operator, and elastic net regression, were employed to estimate phenological dates. Results indicated that the optimal percentile of the DSM for extracting rice PH was the 95th (R² = 0.934, RMSE = 0.056 m). The Fourier model provided a better fit for PH dynamics compared with the logistic models. Additionally, curve features (CF) and GPAT were significantly associated with PI, IH, and FH. The combination of CF and GPAT outperformed the use of CF alone, with RF demonstrating the best performance among the algorithms. Specifically, the combination of CF extracted from the logistic models, GPAT, and RF yielded the best performance for estimating PI (R² = 0.834, RMSE = 4.344 d), IH (R² = 0.877, RMSE = 2.721 d), and FH (R² = 0.883, RMSE = 2.694 d). Overall, UAV-based rice PH dynamics combined with machine learning effectively estimated the key phenological dates of multiple rice accessions, providing a novel approach for investigating key phenological dates in breeding work.

高效和高质量地估算水稻的关键物候期对育种工作意义重大。植株高度（PH）动态对估计物候期很有价值。然而，基于 PH 动态估计水稻多个品种关键物候期的研究还很有限。2022 年，利用基于无人机（UAV）的图像收集了 435 个地块（包括 364 个水稻品种）的田间性状。在水稻生长阶段收集了PH值、初穗期（IH）和全穗期（FH）、圆锥花序始穗期（PI）以及移栽后生长期（GPAT）。使用数字表面模型（DSM）提取 PHs，并使用傅立叶模型和逻辑模型进行拟合。采用机器学习算法，包括多元线性回归、随机森林（RF）、支持向量回归、最小绝对收缩和选择算子以及弹性网回归，来估计物候期。结果表明，提取水稻 PH 值的最佳 DSM 百分位数是第 95 位（R2 = 0.934，RMSE = 0.056 m）。与逻辑模型相比，傅立叶模型能更好地拟合 PH 动态。此外，曲线特征（CF）和 GPAT 与 PI、IH 和 FH 显著相关。CF和GPAT的组合优于单独使用CF，而RF在各种算法中表现最佳。具体而言，从逻辑模型中提取的 CF、GPAT 和 RF 组合在估计 PI（R2 = 0.834，RMSE = 4.344 d）、IH（R2 = 0.877，RMSE = 2.721 d）和 FH（R2 = 0.883，RMSE = 2.694 d）方面表现最佳。总之，基于无人机的水稻 PH 动态分析与机器学习相结合，有效地估计了多个水稻品种的关键物候期，为育种工作中关键物候期的研究提供了一种新方法。

{"title":"Estimating Key Phenological Dates of Multiple Rice Accessions Using Unmanned Aerial Vehicle-Based Plant Height Dynamics for Breeding","authors":"","doi":"10.1016/j.rsci.2024.04.007","DOIUrl":"10.1016/j.rsci.2024.04.007","url":null,"abstract":"<div><div>Efficient and high-quality estimation of key phenological dates in rice is of great significance in breeding work. Plant height (PH) dynamics are valuable for estimating phenological dates. However, research on estimating the key phenological dates of multiple rice accessions based on PH dynamics has been limited. In 2022, field traits were collected using unmanned aerial vehicle (UAV)-based images across 435 plots, including 364 rice varieties. PH, dates of initial heading (IH) and full heading (FH), and panicle initiation (PI), and growth period after transplanting (GPAT) were collected during the rice growth stage. PHs were extracted using a digital surface model (DSM) and fitted using Fourier and logistic models. Machine learning algorithms, including multiple linear regression, random forest (RF), support vector regression, least absolute shrinkage and selection operator, and elastic net regression, were employed to estimate phenological dates. Results indicated that the optimal percentile of the DSM for extracting rice PH was the 95th (<em>R</em><sup>2</sup> = 0.934, RMSE = 0.056 m). The Fourier model provided a better fit for PH dynamics compared with the logistic models. Additionally, curve features (CF) and GPAT were significantly associated with PI, IH, and FH. The combination of CF and GPAT outperformed the use of CF alone, with RF demonstrating the best performance among the algorithms. Specifically, the combination of CF extracted from the logistic models, GPAT, and RF yielded the best performance for estimating PI (<em>R</em><sup>2</sup> = 0.834, RMSE = 4.344 d), IH (<em>R</em><sup>2</sup> = 0.877, RMSE = 2.721 d), and FH (<em>R</em><sup>2</sup> = 0.883, RMSE = 2.694 d). Overall, UAV-based rice PH dynamics combined with machine learning effectively estimated the key phenological dates of multiple rice accessions, providing a novel approach for investigating key phenological dates in breeding work.</div></div>","PeriodicalId":56069,"journal":{"name":"Rice Science","volume":"31 5","pages":"Pages 617-628"},"PeriodicalIF":5.6,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141050138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of Machine Vision-Based Algorithm for Counting and Discriminating Filled and Unfilled Paddy Rice in Overlapping Mode 开发一种基于机器视觉的算法，用于在重叠模式下计数和区分饱满和不饱满的稻穗

IF 5.6 2区农林科学 Q1 AGRONOMY

Rice Science

Pub Date : 2024-09-01 DOI: 10.1016/j.rsci.2024.04.001

引用次数: 0

Advances in Understanding Cadmium Stress and Breeding of Cadmium-Tolerant Crops 认识镉胁迫和培育耐镉作物的进展

IF 5.6 2区农林科学 Q1 AGRONOMY

Rice Science

Pub Date : 2024-09-01 DOI: 10.1016/j.rsci.2024.06.006

Liang Liang, Wang Chenchang, Chen Tao

Cadmium (Cd) pollution has emerged as a critical global environmental concern, due to its significant toxicity, environmental persistence, and the pervasiveness of contamination. Significantly, the bioaccumulation of Cd in agricultural crops constitutes a primary vector for its entry into the human diet. This issue warrants urgent attention from both the scientific community and policymakers to develop and implement effective mitigation strategies. This review delves into the physiological impacts of Cd stress on plants, including the suppression of photosynthetic activity, amplification of oxidative stress, and disruptions in mineral nutrient homeostasis. Additionally, the resistance mechanisms deployed by plants in response to Cd stress have been explored, and the prospective contributions of molecular breeding strategies in augmenting crop tolerance to Cd and minimizing its bioaccumulation have been assessed. By integrating and analyzing these findings, we seek to inform future research trajectories and proffer strategic approaches to enhance agricultural sustainability, safeguard human health, and protect environmental integrity.

镉（Cd）污染已成为全球环境关注的一个重要问题，这是因为镉具有剧毒性、环境持久性和污染的普遍性。值得注意的是，镉在农作物中的生物累积是其进入人类饮食的主要媒介。这一问题亟需科学界和政策制定者的关注，以制定和实施有效的缓解策略。本综述深入探讨了镉胁迫对植物生理的影响，包括抑制光合作用、放大氧化应激和破坏矿物质营养平衡。此外，还探讨了植物应对镉胁迫的抗性机制，并评估了分子育种策略在增强作物对镉的耐受性和最大限度地减少镉的生物累积方面的潜在贡献。通过整合和分析这些发现，我们试图为未来的研究轨迹提供信息，并提出战略方法，以提高农业可持续性、保障人类健康和保护环境完整性。

{"title":"Advances in Understanding Cadmium Stress and Breeding of Cadmium-Tolerant Crops","authors":"Liang Liang, Wang Chenchang, Chen Tao","doi":"10.1016/j.rsci.2024.06.006","DOIUrl":"10.1016/j.rsci.2024.06.006","url":null,"abstract":"<div><div>Cadmium (Cd) pollution has emerged as a critical global environmental concern, due to its significant toxicity, environmental persistence, and the pervasiveness of contamination. Significantly, the bioaccumulation of Cd in agricultural crops constitutes a primary vector for its entry into the human diet. This issue warrants urgent attention from both the scientific community and policymakers to develop and implement effective mitigation strategies. This review delves into the physiological impacts of Cd stress on plants, including the suppression of photosynthetic activity, amplification of oxidative stress, and disruptions in mineral nutrient homeostasis. Additionally, the resistance mechanisms deployed by plants in response to Cd stress have been explored, and the prospective contributions of molecular breeding strategies in augmenting crop tolerance to Cd and minimizing its bioaccumulation have been assessed. By integrating and analyzing these findings, we seek to inform future research trajectories and proffer strategic approaches to enhance agricultural sustainability, safeguard human health, and protect environmental integrity.</div></div>","PeriodicalId":56069,"journal":{"name":"Rice Science","volume":"31 5","pages":"Pages 507-525"},"PeriodicalIF":5.6,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142425062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ameliorative Effects of Paclobutrazol via Physio-Biochemical and Molecular Manifestation in Rice under Water Deficit Stress 五氯丁唑通过生理生化和分子表现对缺水胁迫下水稻的改善作用

IF 5.6 2区农林科学 Q1 AGRONOMY

Rice Science

Pub Date : 2024-09-01 DOI: 10.1016/j.rsci.2024.03.004

To comprehensively explore the physio-biochemical and molecular changes of paclobutrazol (PBZ) at the ideal dose under water deficit stress (WDS) conditions, we investigated the effects of 100 mg/kg PBZ applied via drenching on various physio-biochemical and molecular parameters in three rice varieties (N22, IR64, and IR64 DTY1.1) under both mild [75%‒80% relative water content (RWC)] and severe (60%‒65% RWC) WDS conditions. The results showed that PBZ treatment positively influenced the physio-biochemical parameters, significantly increasing dry matter (16.27%‒61.91%), RWC (6.48%‒ 16.34%), membrane stability index (4.37%‒10.35%), and total chlorophyll content (8.97%‒29.09%) in the rice varieties under both mild and severe WDS. Moreover, PBZ treatment reduced drought susceptibility (0.83‒0.95) and enhanced drought tolerance efficiency (60.92%‒86.78%), indicating its potential as a stress-mitigating agent. Global methylation analysis revealed changes in DNA methylation patterns, indicating the regulatory influence of PBZ on gene expression. The expression analysis of genes involved in the diversification of geranylgeranyl pyrophosphate towards the biosynthesis of abscisic acid, gibberellin acid, and chlorophyll showed alterations in their expression levels, suggesting the involvement of PBZ in the isoprenoid pathway. Overall, this study provides valuable insights into the potential mechanisms by which PBZ modulates physiological and molecular responses in rice plants under WDS. The findings highlight the importance of PBZ as a promising agent for enhancing drought tolerance in rice and offer valuable information for future research in crop stress management.

为了全面探讨缺水胁迫（WDS）条件下理想剂量的吡虫啉（PBZ）的生理生化和分子变化，我们研究了在轻度 WDS [75%-80% 相对含水量（RWC）]和重度 WDS（60%-65% RWC）条件下，通过淋施 100 mg/kg PBZ 对 3 个水稻品种（N22、IR64 和 IR64 DTY1.1）的各种生理生化和分子参数的影响。结果表明，PBZ 处理对水稻的生理生化指标有积极影响，显著提高了水稻品种在轻度和重度 WDS 条件下的干物质（16.27%-61.91%）、相对含水量（6.48%-16.34%）、膜稳定性指数（4.37%-10.35%）和总叶绿素含量（8.97%-29.09%）。此外，PBZ 处理降低了干旱敏感性（0.83-0.95），提高了抗旱效率（60.92%-86.78%），显示了其作为胁迫缓解剂的潜力。全局甲基化分析显示了 DNA 甲基化模式的变化，表明了 PBZ 对基因表达的调控作用。对参与脱落酸、赤霉素和叶绿素生物合成的精原基焦磷酸多样化的基因进行的表达分析表明，这些基因的表达水平发生了变化，表明 PBZ 参与了异戊二烯途径。总之，本研究为了解 PBZ 在 WDS 条件下调节水稻植株生理和分子反应的潜在机制提供了有价值的见解。研究结果强调了 PBZ 作为一种有希望提高水稻耐旱性的制剂的重要性，并为未来作物胁迫管理研究提供了有价值的信息。

{"title":"Ameliorative Effects of Paclobutrazol via Physio-Biochemical and Molecular Manifestation in Rice under Water Deficit Stress","authors":"","doi":"10.1016/j.rsci.2024.03.004","DOIUrl":"10.1016/j.rsci.2024.03.004","url":null,"abstract":"<div><div>To comprehensively explore the physio-biochemical and molecular changes of paclobutrazol (PBZ) at the ideal dose under water deficit stress (WDS) conditions, we investigated the effects of 100 mg/kg PBZ applied via drenching on various physio-biochemical and molecular parameters in three rice varieties (N22, IR64, and IR64 DTY1.1) under both mild [75%‒80% relative water content (RWC)] and severe (60%‒65% RWC) WDS conditions. The results showed that PBZ treatment positively influenced the physio-biochemical parameters, significantly increasing dry matter (16.27%‒61.91%), RWC (6.48%‒ 16.34%), membrane stability index (4.37%‒10.35%), and total chlorophyll content (8.97%‒29.09%) in the rice varieties under both mild and severe WDS. Moreover, PBZ treatment reduced drought susceptibility (0.83‒0.95) and enhanced drought tolerance efficiency (60.92%‒86.78%), indicating its potential as a stress-mitigating agent. Global methylation analysis revealed changes in DNA methylation patterns, indicating the regulatory influence of PBZ on gene expression. The expression analysis of genes involved in the diversification of geranylgeranyl pyrophosphate towards the biosynthesis of abscisic acid, gibberellin acid, and chlorophyll showed alterations in their expression levels, suggesting the involvement of PBZ in the isoprenoid pathway. Overall, this study provides valuable insights into the potential mechanisms by which PBZ modulates physiological and molecular responses in rice plants under WDS. The findings highlight the importance of PBZ as a promising agent for enhancing drought tolerance in rice and offer valuable information for future research in crop stress management.</div></div>","PeriodicalId":56069,"journal":{"name":"Rice Science","volume":"31 5","pages":"Pages 603-616"},"PeriodicalIF":5.6,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141033981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Appropriate Supply of Ammonium Nitrogen and Ammonium Nitrate Reduces Cadmium Content in Rice Seedlings by Inhibiting Cadmium Uptake and Transport 适当供应氨和硝酸铵，通过抑制镉的吸收和转运降低水稻幼苗的镉含量

IF 5.6 2区农林科学 Q1 AGRONOMY

Rice Science

Pub Date : 2024-09-01 DOI: 10.1016/j.rsci.2024.02.007

Reasonable nitrogen (N) application is a promising strategy for reducing crop cadmium (Cd) toxicity. However, the specific form of N and the required amount that affect Cd tolerance and accumulation in rice remain unclear. This study explored the influence of different N-fertilizer forms (NH₄NO₃, NH₄Cl, and KNO₃) and dosages on Cd tolerance and uptake in Cd-stressed N-sensitive and N-insensitive indica rice accessions. The results indicated that the Cd tolerance of N-sensitive indica accessions is more robust than that of N-insensitive ones. Furthermore, the shoot Cd content and Cd translocation rate in both N-sensitive and N-insensitive indica accessions decreased with an appropriate supply of NH₄NO₃ and NH₄Cl, whereas they were comparable or slightly increased with increased KNO₃. Unfortunately, we did not find significant and regular differences in Cd accumulation or translocation between N-sensitive and N-insensitive rice accessions. Consistent with the reduction of shoot Cd content, the addition of NH₄NO₃ and NH₄Cl also inhibited the instantaneous root Cd²⁺ uptake. The expression changes of Cd transport-related genes under different N forms and dosages suggested that the decreased shoot Cd content, caused by the increased supply of NH₄NO₃ and NH₄Cl, is likely achieved by reducing the transcription of OsNRAMP1 and OsIRT1. In summary, our findings reveal that an appropriate supply of NH₄NO₃ and NH₄Cl could reduce Cd uptake and transport in rice seedlings, suggesting that rational N management could reduce the Cd risk in rice production.

合理施氮是降低作物镉（Cd）毒性的一种可行策略。然而，影响水稻镉耐受性和积累的具体氮肥形式和所需数量仍不清楚。本研究探讨了不同氮肥形式（NH4NO3、NH4Cl 和 KNO3）和剂量对镉胁迫下对氮敏感和对氮不敏感的籼稻品种的耐镉性和镉吸收的影响。结果表明，对氮敏感的籼稻品种比对氮不敏感的籼稻品种对镉的耐受性更强。此外，在适当供给 NH4NO3 和 NH4Cl 的情况下，对氮敏感和对氮不敏感的籼稻品种的芽镉含量和镉转运率都有所下降，而在增加 KNO3 的情况下，它们的含量和镉转运率则相当或略有增加。遗憾的是，我们没有发现对氮敏感和对氮不敏感的水稻品种之间在镉积累或转运方面存在明显的规律性差异。与芽镉含量降低一致，NH4NO3 和 NH4Cl 的添加也抑制了根对 Cd2+ 的瞬时吸收。不同氮形态和剂量下镉转运相关基因的表达变化表明，增加 NH4NO3 和 NH4Cl 的供给导致的芽镉含量降低可能是通过减少 OsNRAMP1 和 OsIRT1 的转录实现的。总之，我们的研究结果表明，适当供应 NH4NO3 和 NH4Cl 可减少水稻幼苗对镉的吸收和迁移，这表明合理的氮管理可降低水稻生产中的镉风险。

{"title":"Appropriate Supply of Ammonium Nitrogen and Ammonium Nitrate Reduces Cadmium Content in Rice Seedlings by Inhibiting Cadmium Uptake and Transport","authors":"","doi":"10.1016/j.rsci.2024.02.007","DOIUrl":"10.1016/j.rsci.2024.02.007","url":null,"abstract":"<div><div>Reasonable nitrogen (N) application is a promising strategy for reducing crop cadmium (Cd) toxicity. However, the specific form of N and the required amount that affect Cd tolerance and accumulation in rice remain unclear. This study explored the influence of different N-fertilizer forms (NH<sub>4</sub>NO<sub>3</sub>, NH<sub>4</sub>Cl, and KNO<sub>3</sub>) and dosages on Cd tolerance and uptake in Cd-stressed N-sensitive and N-insensitive <em>indica</em> rice accessions. The results indicated that the Cd tolerance of N-sensitive <em>indica</em> accessions is more robust than that of N-insensitive ones. Furthermore, the shoot Cd content and Cd translocation rate in both N-sensitive and N-insensitive <em>indica</em> accessions decreased with an appropriate supply of NH<sub>4</sub>NO<sub>3</sub> and NH<sub>4</sub>Cl, whereas they were comparable or slightly increased with increased KNO<sub>3</sub>. Unfortunately, we did not find significant and regular differences in Cd accumulation or translocation between N-sensitive and N-insensitive rice accessions. Consistent with the reduction of shoot Cd content, the addition of NH<sub>4</sub>NO<sub>3</sub> and NH<sub>4</sub>Cl also inhibited the instantaneous root Cd<sup>2+</sup> uptake. The expression changes of Cd transport-related genes under different N forms and dosages suggested that the decreased shoot Cd content, caused by the increased supply of NH<sub>4</sub>NO<sub>3</sub> and NH<sub>4</sub>Cl, is likely achieved by reducing the transcription of <em>OsNRAMP1</em> and <em>OsIRT1</em>. In summary, our findings reveal that an appropriate supply of NH<sub>4</sub>NO<sub>3</sub> and NH<sub>4</sub>Cl could reduce Cd uptake and transport in rice seedlings, suggesting that rational N management could reduce the Cd risk in rice production.</div></div>","PeriodicalId":56069,"journal":{"name":"Rice Science","volume":"31 5","pages":"Pages 587-602"},"PeriodicalIF":5.6,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139876064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rice Heat Tolerance Breeding: A Comprehensive Review and Forward Gaze 水稻耐热育种：全面回顾与前瞻

IF 5.6 2区农林科学 Q1 AGRONOMY

Rice Science

Pub Date : 2024-07-01 DOI: 10.1016/j.rsci.2024.02.004

The yield potential of rice is seriously affected by heat stress due to climate change. Since rice is a staple food globally, it is imperative to develop heat-resistant rice varieties. Thus, a thorough understanding of the complex molecular mechanisms underlying heat tolerance and the impact of high temperatures on various critical stages of the crop is needed. Adoption of both conventional and innovative breeding strategies offers a long-term advantage over other methods, such as agronomic practices, to counter heat stress. In this review, we summarize the effects of heat stress, regulatory pathways for heat tolerance, phenotyping strategies, and various breeding methods available for developing heat-tolerant rice. We offer perspectives and knowledge to guide future research endeavors aimed at enhancing the ability of rice to withstand heat stress and ultimately benefit humanity.

气候变化导致的热胁迫严重影响了水稻的产量潜力。由于水稻是全球的主食，开发耐热水稻品种势在必行。因此，需要深入了解耐热性的复杂分子机制以及高温对作物各个关键阶段的影响。与其他方法（如农艺实践）相比，采用常规和创新育种策略具有长期优势，可有效对抗热胁迫。在这篇综述中，我们总结了热胁迫的影响、耐热性的调控途径、表型分析策略以及开发耐热水稻的各种育种方法。我们提供的观点和知识可指导未来的研究工作，旨在提高水稻抵御热胁迫的能力，最终造福人类。

引用次数: 0

Salinity Stress Deteriorates Grain Yield and Increases 2-Acetyl-1-Pyrroline Content in Rice 盐分胁迫会降低水稻产量并增加 2-乙酰基-1-吡咯啉含量

IF 5.6 2区农林科学 Q1 AGRONOMY

Rice Science

Pub Date : 2024-07-01 DOI: 10.1016/j.rsci.2024.02.010

引用次数: 0

Random Amplification Polymorphic DNA and Agro-Morphological Traits-Based Fingerprinting for Detection of Genetic Divergence in Indian Black Rice 基于 RAPD 和农业形态特征的指纹图谱检测印度黑米的遗传差异

IF 5.6 2区农林科学 Q1 AGRONOMY

Rice Science

Pub Date : 2024-07-01 DOI: 10.1016/j.rsci.2024.03.002

引用次数: 0

Effects of Biochar Inoculation with Bacillus megaterium on Rice Soil Phosphorus Fraction Transformation and Bacterial Community Dynamics 生物炭接种巨型芽孢杆菌对水稻土壤磷组分转化和细菌群落动态的影响

IF 5.6 2区农林科学 Q1 AGRONOMY

Rice Science

Pub Date : 2024-07-01 DOI: 10.1016/j.rsci.2024.04.003

引用次数: 0

首页上一页

下一页尾页

类型

全部化学•材料生命科学医学物理工程技术环境•农林材料科学地球科学法学管理学化学环境科学与生态学计算机科学教育学经济学农林科学人文科学生物学数学物理与天体物理心理学综合性期刊其他工业工程理学历史学农学文学信息工程

数据库

全部 ACS Publications Elsevier ieeexplore Springer The Royal Society of Chemistry Wiley

期刊

Rice Science

全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.

﹀