Rice Science最新文献

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Long-Range Admixture Linkage Disequilibrium and Allelic Responses of Sub1 and TPP7 under Consecutive Stress in Rice Validated Through Mendelian Randomization 孟德尔随机化验证水稻Sub1和TPP7在连续胁迫下的远程杂合连锁不平衡及等位基因响应

IF 6.1 2区农林科学 Q1 AGRONOMY

Rice Science

Pub Date : 2025-09-01 Epub Date: 2025-09-03 DOI: 10.1016/j.rsci.2025.06.009

Sabarinathan SELVARAJ , Parameswaran CHIDAMBARANATHAN , Goutam Kumar DASH , Priyadarsini SANGHAMITRA , Kishor Pundlik JEUGHALE , Cayalvizhi BALASUBRAMANIASAI , Devraj LENKA , Basavantraya Navadagi DEVANNA , Seenichamy Rathinam PRABHUKARTHIKEYAN , Sanghamitra SAMANTARAY , Amaresh Kumar NAYAK

Consecutive stresses, such as initial submergence during germination followed by water deficit during the seedling stage, pose significant challenges to direct-seeded rice cultivation. By Linkage disequilibrium analysis, Sub1 and Dro1 (Δbp: 10 Mb), as well as Sub1 and TPP7 (Δbp: 6 Mb) were identified to exhibit long-range linkage disequilibrium (LRLD). Meta-QTL analysis further revealed that Sub1 and TPP7 co-segregated for tolerance to submergence at the germination and seedling stages. Based on this, we hypothesized that LRLD might influence plant responses to consecutive stresses. To test this hypothesis, we developed a structured recombinant inbred line population from a cross between Bhalum 2 and Nagina 22, with alleles (Sub1 and TPP7) in linkage equilibrium. Mendelian randomization analysis validated that the parental alleles, rather than the recombinant alleles of Sub1 and TPP7, significantly influenced 13 out of 41 traits under consecutive stress conditions. Additionally, 16 minor additive effect QTLs were detected between the genomic regions, spanning Sub1 and TPP7 for various traits. A single allele difference between these genomic regions enhanced crown root number, root dry weight, and specific root area by 11.45%, 15.69%, and 33.15%, respectively, under flooded germination conditions. Candidate gene analysis identified WAK79 and MRLK59 as regulators of stress responses during flooded germination, recovery, and subsequent water deficit conditions. These findings highlight the critical role of parental allele combinations and genomic regions between Sub1 and TPP7 in regulating the stress responses under consecutive stresses. Favourable haplotypes derived from these alleles can be utilized to improve stress resilience in direct-seeded rice.

连续胁迫，如发芽初期的淹没和苗期的水分亏缺，对水稻直播栽培构成了重大挑战。通过连锁不平衡分析，发现Sub1和Dro1 （Δbp: 10 Mb）以及Sub1和TPP7 （Δbp: 6 Mb）表现出远程连锁不平衡（LRLD）。Meta-QTL分析进一步揭示，Sub1和TPP7在萌发期和幼苗期耐淹性共分离。基于此，我们假设LRLD可能影响植物对连续胁迫的反应。为了验证这一假设，我们从balum 2和Nagina 22的杂交中开发了一个结构重组自交系群体，其中等位基因（Sub1和TPP7）处于连锁平衡状态。孟德尔随机化分析证实，在连续胁迫条件下，亲本等位基因显著影响了41个性状中的13个，而非重组的Sub1和TPP7等位基因。此外，在不同性状的基因组区域间检测到16个次要加性效应qtl，跨越Sub1和TPP7。在淹水萌发条件下，这些基因组区域间的单等位基因差异使冠根数、根干重和比根面积分别提高了11.45%、15.69%和33.15%。候选基因分析发现，WAK79和MRLK59在淹水萌发、恢复和随后的水分亏缺条件下是胁迫反应的调节因子。这些发现强调了亲本等位基因组合和Sub1和TPP7之间的基因组区域在调节连续胁迫下的应激反应中的关键作用。由这些等位基因衍生的有利单倍型可用于提高直播水稻的抗逆性。

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引用次数: 0

OsELF3.1-OsCATA-Ghd7 Pathway Regulates Rice Heading OsELF3.1-OsCATA-Ghd7通路调控水稻抽穗

IF 6.1 2区农林科学 Q1 AGRONOMY

Rice Science

Pub Date : 2025-09-01 Epub Date: 2025-07-05 DOI: 10.1016/j.rsci.2025.06.001

Wu Zhaozhong , Zhong Zhengzheng , Xu Peng , Liu Ling , Wang Beifang , Yang Qinqin , Wen Xiaoxia , Ma Guifang , Luo Mili , Zhang Yingxin , Liu Qun’en , Peng Zequn , Zhan Xiaodeng , Cao Liyong , Cheng Shihua , Wu Weixun

Rice, a critical global staple crop, relies heavily on heading date, a key agronomic trait marking the transition from vegetative to reproductive growth. Understanding the genetic regulation of heading date is vital for enhancing the adaptability of high-quality rice varieties across diverse geographical regions and for bolstering local food security. In this study, we uncovered a novel role for OsCATA, a catalase gene, in the regulation of photoperiodic flowering in rice. We identified a novel allele of OsELF3.1, whose mutation resulted in delayed heading. Further analyses revealed that OsELF3.1 physically interacted with OsCATA. Notably, OsCATA exhibited rhythmic expression patterns similar to OsELF3.1 and, when mutated, also delayed flowering. Expression analyses showed that the delayed heading phenotype could be attributed to elevated Ghd7 expression under both long-day and short-day conditions, with OsCATA expression positively regulated by OsELF3.1. Double mutants of OsELF3.1 and OsCATA displayed a heading delay similar to that of oself3.1 single mutants. Additionally, OsELF3.1 could interact with Ghd7 in vivo, alleviating its suppression of Ehd1. Luciferase assays confirmed that Ghd7 repressed Ehd1 expression, while OsELF3.1 mitigated this repression. Collectively, our findings reveal that OsCATA is critical in suppressing Ghd7 expression through the OsELF3.1-OsCATA-Ghd7 transcriptional pathway, thereby regulating rice heading.

水稻是一种重要的全球主粮作物，在很大程度上依赖于抽穗日期，这是标志着水稻从营养生长向生殖生长过渡的关键农艺性状。了解抽穗日期的遗传调控对于提高优质水稻品种在不同地理区域的适应性和加强地方粮食安全至关重要。在这项研究中，我们发现了一个过氧化氢酶基因OsCATA在水稻光周期开花调控中的新作用。我们发现了一个新的OsELF3.1等位基因，其突变导致延迟抽穗。进一步分析发现OsELF3.1与OsCATA存在物理相互作用。值得注意的是，OsCATA表现出与OsELF3.1相似的节律性表达模式，当发生突变时，也会延迟开花。表达分析表明，延迟抽穗表型可归因于长日照和短日照条件下Ghd7表达升高，OsELF3.1正调控OsCATA表达。OsELF3.1和OsCATA双突变体的抽穗延迟与OsELF3.1单突变体相似。此外，OsELF3.1在体内可以与Ghd7相互作用，减轻其对Ehd1的抑制。荧光素酶测定证实，Ghd7抑制Ehd1的表达，而OsELF3.1减轻了这种抑制。综上所述，我们的研究结果表明，OsCATA通过OsELF3.1-OsCATA-Ghd7转录途径抑制Ghd7的表达，从而调节水稻抽穗。

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引用次数: 0

Transcriptomic Regulation Analysis Reveals Salt-Induced Response at Early Seedling Stages among Three Rice Genotypes 三种水稻基因型在苗期早期盐诱导应答的转录组调控分析

IF 6.1 2区农林科学 Q1 AGRONOMY

Rice Science

Pub Date : 2025-09-01 Epub Date: 2025-05-05 DOI: 10.1016/j.rsci.2025.04.013

Sirinthorn Kongpraphrut , Yang Lü , Yueying Wang , Mohamed Hazman , Hanhua Tong , Qian Qian , Longbiao Guo

引用次数: 0

Production of Authentic Hybrid Seedlings by Conferring Parents with Resistance to Different Herbicides 通过赋予亲本对不同除草剂的抗性来生产正宗杂交幼苗

IF 6.1 2区农林科学 Q1 AGRONOMY

Rice Science

Pub Date : 2025-09-01 Epub Date: 2025-05-14 DOI: 10.1016/j.rsci.2025.05.001

Wu Jingjing , Xia Shijian , Cai Yue , Zhang Qijun , Zong Shouyu , Zhu Qianhao , Yang Jie

引用次数: 0

OsACL-A2 Regulates Positive Iron Uptake and Blast Resistance in Rice OsACL-A2调控水稻正铁吸收和稻瘟病抗性

IF 6.1 2区农林科学 Q1 AGRONOMY

Rice Science

Pub Date : 2025-09-01 Epub Date: 2025-04-23 DOI: 10.1016/j.rsci.2025.03.007

Wenjing Duan , Chan Aaron , Peng Xu , Yingxin Zhang , Lianping Sun , Beifang Wang , Yongrun Cao , Yue Zhang , Dian Li , Daibo Chen , Yongbo Hong , Xiaodeng Zhan , Weixun Wu , Shihua Cheng , Qun’en Liu , Liyong Cao

引用次数: 0

TSA4, Encoding an RsgA GTPase, is Required for Temperature-Dependent Chloroplast Development in Rice 编码RsgA GTPase的TSA4在水稻温度依赖性叶绿体发育中是必需的

IF 6.1 2区农林科学 Q1 AGRONOMY

Rice Science

Pub Date : 2025-09-01 Epub Date: 2025-09-04 DOI: 10.1016/j.rsci.2025.08.001

Xue Kexin , Guo Liang , Min Lizhang , Chen Zuwu , Liu Wenqiang , Li Xiaoxiang , Dong Zheng , He Pan , Zhang Haiwen , Pan Xiaowu

引用次数: 0

Genetic Investigation Reveals That High Heterozygous Frequency in Selfing Offspring Promotes Multi-Generational Heterosis in Polyploid Rice 遗传研究表明，自交后代的高杂合频率促进了多倍体水稻的多代杂种优势

IF 6.1 2区农林科学 Q1 AGRONOMY

Rice Science

Pub Date : 2025-09-01 Epub Date: 2025-05-05 DOI: 10.1016/j.rsci.2025.04.010

Zhu Lianjun , Huang Yu , Yang Jia , Chen Rou , Wu Jinwen , Liu Xiangdong , Lu Zijun

引用次数: 0

Grain Zinc 7 Contributes to Zinc Deficiency Tolerance and Accumulation in Rice 籽粒锌7对水稻耐锌和锌积累的影响

IF 6.1 2区农林科学 Q1 AGRONOMY

Rice Science

Pub Date : 2025-09-01 Epub Date: 2025-05-05 DOI: 10.1016/j.rsci.2025.04.007

Tang Jichun , Zhan Junhui , Liu Yuxi , Li Shuangyuyan , Lu Xiang , Meng Lijun , Ye Guoyou

引用次数: 0

Molecular and Functional Roles of Tapetum Organelles: A Nursing Staff for Pollen Development 绒毡层细胞器的分子和功能作用：花粉发育的护理人员

IF 6.1 2区农林科学 Q1 AGRONOMY

Rice Science

Pub Date : 2025-09-01 Epub Date: 2025-06-27 DOI: 10.1016/j.rsci.2025.06.003

Asif ALI , Sumer ZULFIQAR , Asad RIAZ , Maneesh LINGWAN , Lianping SUN , Xianjun WU

Male gametes are produced in the anthers and are essential for fertilization and seed setting. A transverse section of the anther reveals four layers: the epidermis, endothecium, middle layer, and tapetum. The tapetum, being the innermost layer, plays a critical role in supplying nutrients, enzymes, and protection to microspores. Detailed microscopic and ultrastructural analyses have revealed highly active and well-organized structures within the tapetum, referred to as tapetal organelles. Molecular studies have highlighted the significance of tapetal cell death and the nurturing role of the tapetum for microspores. However, the mechanisms by which these processes are mediated by tapetal organelles at the cellular level remain elusive. The discovery of mutants defective in tapetal organelles has enabled further investigations into their structure, morphology, and function. This review discusses the molecular and functional roles of various tapetal organelles, such as plastids (amyloplasts and elaioplasts), mitochondria, tapetosomes, endoplasmic reticulum, and lipid bodies. We provide an overview of their roles, highlight key organelles in the tapetum, and address recent challenges and potential applications of genes regulating tapetal organelles in enhancing crop fertility.

雄性配子在花药中产生，对受精和结实子至关重要。花药横切面显示四层：表皮、内胚层、中间层和绒毡层。绒毡层是最内层，在提供营养、酶和保护小孢子方面起着至关重要的作用。详细的显微和超微结构分析揭示了绒毡层内高度活跃和组织良好的结构，称为绒毡细胞器。分子研究强调了绒毡层细胞死亡的重要性以及绒毡层对小孢子的培养作用。然而，这些过程是由毡层细胞器在细胞水平上介导的，其机制尚不清楚。绒毡层细胞器缺陷突变体的发现使得绒毡层细胞器结构、形态和功能的进一步研究成为可能。本文综述了各种毡层细胞器的分子和功能作用，如质体（淀粉体和松质体）、线粒体、绒粒体、内质网和脂质体。我们概述了它们的作用，重点介绍了绒毡层中的关键细胞器，并讨论了绒毡层细胞器调控基因在提高作物肥力方面的最新挑战和潜在应用。

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引用次数: 0

Straw Burning Dilemma in Modern Agriculture: A Systematic Review of Driving Factors, Environmental Impacts, and Sustainable Solutions 现代农业秸秆焚烧困境：驱动因素、环境影响及可持续解决方案的系统综述

IF 6.1 2区农林科学 Q1 AGRONOMY

Rice Science

Pub Date : 2025-09-01 Epub Date: 2025-07-09 DOI: 10.1016/j.rsci.2025.06.007

Ghada Abd Elsattar Mohammed Oraby , Fadillah Putra , M. Halim Natsir , Dian Siswanto , Meshal M. Abdullah , Ammar Abulibdeh

Straw burning has emerged as a persistent and multifaceted challenge within global agricultural systems, particularly across Asia, Africa, and Latin America. This review reframes straw burning not as an isolated behavioral issue, but as the outcome of interlinked structural, technological, and socio-cultural constraints embedded in modern agricultural transitions. Drawing on a synthesis of recent empirical studies, we identify four conceptual turning points that reshape the understanding of straw burning: the structural consequences of mechanization, the trade-offs between high- and low-tech solutions, the cultural legitimacy of burning practices, and the need for systems-based, climate-aligned management paradigms. The analysis reveals that interventions focusing solely on technical innovation often overlook the deeper institutional and cultural factors that sustain burning as a rational choice under constrained conditions. We advocate for hybrid, place-based strategies that combine accessible agronomic practices with long-term investments in infrastructure, policy alignment, and community engagement. Moving beyond fragmented solutions and adopting an integrated systems lens enables this study to contribute a forward-looking framework for sustainable straw management that is environmentally just, socially legitimate, and economically viable.

秸秆焚烧已成为全球农业系统中持续存在的多方面挑战，特别是在亚洲、非洲和拉丁美洲。这篇综述认为秸秆焚烧不是一个孤立的行为问题，而是现代农业转型中嵌入的相互关联的结构、技术和社会文化约束的结果。综合最近的实证研究，我们确定了重塑对秸秆焚烧理解的四个概念转折点：机械化的结构性后果、高科技和低技术解决方案之间的权衡、焚烧实践的文化合法性，以及对基于系统的、与气候一致的管理范式的需求。分析表明，仅仅关注技术创新的干预往往忽视了更深层次的制度和文化因素，这些因素使燃烧在受限条件下成为一种理性选择。我们提倡混合的、基于地方的战略，将可获得的农艺实践与基础设施、政策协调和社区参与的长期投资相结合。超越碎片化解决方案，采用综合系统视角，使本研究能够为可持续秸秆管理提供前瞻性框架，实现环境公正、社会合法和经济可行。

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