[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"item-1016":3,"related-1016":64},{"id":4,"title":5,"url":6,"summary":7,"summary_zh":8,"content":9,"source_name":10,"source_url":8,"published_at":11,"category":12,"cover_url":8,"hotness":13,"is_selected":14,"score":15,"score_detail":16,"sources":24,"tags":26,"primary_topic":34,"secondary_topics":40,"classification":41,"search_phrases":59,"slug":62,"view_count":55,"doi":8,"paper":8,"created_at":63},1016,"湖南杂交水稻研究中心高档优质稻育种团队克隆水稻种子耐贮性关键基因SS12 揭示籼稻比粳稻更耐储藏的分子机制","http:\u002F\u002Fhhrrc.hunaas.cn\u002Findex.php?a=index&aid=4192&c=View&m=home","湖南杂交水稻研究中心(隶属湖南省农业科学院)高档优质稻育种团队刘烨副研究员与湖南农业大学贺记外副教授为共同通讯作者,在《The Crop Journal》发表论文,克隆水稻种子耐贮性关键基因SS12。研究发现SS12作为上游枢纽,通过重塑基因表达网络,协同维持细胞内的蛋白稳态和氧化还原平衡,从而增强种子耐贮性;同时通过强化抗氧化防御,激活苯丙烷代谢等途径,促进黄酮类等抗氧化物质的合成,清除过量活性氧(ROS)。追溯该基因驯化历史发现,野生稻中SS12区域具有较高的核苷酸多样性,栽培稻中多样性显著降低并呈现明显的选择性清除信号;耐贮性强的单倍型(Hap2)在籼稻(Indica)中分布频率较高,解释了籼稻通常比粳稻更耐储藏。该研究为培育'天生耐放'水稻新品种提供了重要的靶基因资源和分子育种方案。",null,"种子是农业的“芯片”，也是种质资源保存的核心。对于水稻而言，种子在贮藏过程中的活力衰退（老化）一直是困扰全球粮食安全的重要问题。在全球气候变暖的大背景下，挖掘并利用耐贮基因培育耐贮水稻品种，是解决这一难题的重要途径。为实现水稻种子耐贮性的精准解析，研究团队成功锁定了候选基因LOC_Os12g06440，并将其命名为SS12。功能验证实验表明（图1），在正常条件下，SS12敲除突变体与野生型的发芽率无显著差异；但在人工加速老化处理后，突变体的发芽势、发芽指数均显著低于野生型，表明SS12的缺失导致水稻种子对老化胁迫高度敏感。亚细胞定位和转录激活实验进一步证实，SS12是一个定位于细胞核并具有转录激活活性的转录因子。为阐明SS12的分子调控机理，研究人员通过整合转录组（RNA-seq）和DNA亲和纯化测序（DAP-seq）分析，发现SS12直接调控58个下游靶基因。这些基因显著富集于两个关键通路：一是蛋白稳态维护，调控内质网蛋白加工、泛素介导的蛋白降解及自噬过程，及时清理因老化产生的错误折叠蛋白；二是抗氧化防御，激活苯丙烷代谢等途径，促进黄酮类等抗氧化物质的合成，清除过量的活性氧（ROS）（图2）。由此，研究提出了SS12调控种子耐贮性的工作模型：SS12作为上游枢纽，通过重塑基因表达网络，协同维持细胞内的蛋白稳态和氧化还原平衡，从而增强种子的耐贮性。","湖南杂交水稻研究中心 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个省市审定或引种备案。湖北省农科院首席科学家游艾青表示，引入粳稻可打造差异化产品。","10月9日，湖北省农业科学院粮食作物研究所和南京农业大学水稻研究所联合邀请华中农业大学、湖北省种子管理局、湖北省农业科学院植保土肥研究所、黄冈市农业科学院、黄冈市农村专业技术协会等单位的专家，来到团风县回龙山镇梅家墩村三组，对优质食味粳稻新品种“宁香粳9号”百亩示范方进行现场测产。\n\n阳光下，“宁香粳9号”长势清秀、秆青籽黄、穗大粒饱、稻穗齐整。专家组观摩了百亩示范方后，随机抽取1个田块进行测产，确定采用收割机进行收割脱粒，当场装袋称重计产。\n\n团风县邦农水稻种植农民专业合作社负责人梅新华介绍，示范方面积112亩，前茬作物为油菜。今年5月30日按照用种量7公斤\u002F亩，实施无人机飞播。示范种植期间，水稻长势均衡、结实率高，无明显病虫危害。\n\n专家组通过取样测定杂质率和水分含量，最终，“宁香粳9号”百亩示范方稻谷折合标准产量为亩产805.25公斤。\n\n“宁香粳9号”是南京农业大学万建民院士团队选育的优质、高产、早熟的优质食味粳稻新品种。该品种不仅表现出产量高、米质优、抗病强等优点，还显著改善了软米的外观，米饭香、软、弹、滑，深受市场广泛欢迎，曾获第三届、第四届全国优质稻品种食味品质鉴定（粳稻）金奖。2023年被农业农村部认定为超级稻品种，成为农业农村部2023年、2024年水稻主导品种。已通过江苏、安徽、上海、湖北、浙江、云南、贵州、河南等8个省市的审定或引种备案。\n\n2024年，“宁香粳9号”落户湖北。分别在黄冈、仙桃、公安、潜江、枝江、当阳、孝昌、宜城、随州设立9个种植示范区。当年，黄冈市在黄湖农场示范方组织专家进行实地测产，平均亩产达811.6公斤。\n\n“‘宁香粳9号’产量高、米质优、口感好，每亩平均增收约400元。”黄冈市农科院院长涂军明介绍说，今年示范方生产的稻谷，已被当地大米加工企业订购。\n\n湖北是我国重要水稻产区，以籼稻为主。全省粳稻种植面积300万亩，约占中稻种植面积的十分之一。发展优质粳稻有基础、有优势、有潜力、有需求。\n\n“‘宁香粳9号’是‘十四五’国家农作物育种联合攻关成果，在我省进行引种，是助力水稻育种创新、品种结构调整、产业提质增效、满足消费升级的重要举措。”湖北省农科院首席科学家、研究员游艾青表示，目前“江汉大米”大多以长粒籼米为主。引入粳稻品种，能够打造差异化产品，丰富品牌产品线，提升区域公用品牌的竞争力。\n\n好品种要有好的栽培方法。下一步，省粮作所、南农大学水稻研究所将联合示范方，探索机插、精量条播等种植方式，为湖北粮农种植“宁香粳9号”等粳稻品种提供更多、更好的“技术支撑”。（湖北日全媒记者汪彤 通讯员项俊平）","腾讯新闻 2026-10-19","2026-10-19T00:00:00Z",67,{"impact":19,"substance":77,"depth":78,"authority":79,"freshness":65,"relevant":22,"comment":80},20,15,8,"省级联合示范测产，数据具体、品种背景清晰，对粳稻品种结构调整有参考价值，但属常规示范报道，时效略滞后。",[82],{"name":73,"url":70},[84,85,86,87,33],"种业振兴","水稻育种","品种推广","超级稻",{"code":35,"slug":36,"name":37,"path":38,"parent_code":39},[],{"status":42,"locked":43,"version":44,"method":45,"evidence":91},{"candidates":92,"agricultural_evidence":14},[93,97],{"code":35,"score":65,"supported":14,"title":94,"abstract":95,"tags":96},[],[37],[85,33,87],{"code":98,"score":99,"supported":43,"title":100,"abstract":101,"tags":102},"F1",2,[],[],[86,84],[104,105],"宁香粳9号 湖北 测产","南京农业大学 万建民 粳稻","宁香粳9号湖北测产-5445",0,"2026-10-21T00:10:02.054496Z",{"id":110,"title":111,"url":112,"summary":113,"summary_zh":8,"content":114,"source_name":115,"source_url":8,"published_at":116,"category":12,"cover_url":8,"hotness":13,"is_selected":43,"score":117,"score_detail":118,"sources":122,"tags":124,"primary_topic":127,"secondary_topics":128,"classification":129,"search_phrases":145,"slug":148,"view_count":107,"doi":8,"paper":8,"created_at":149},5336,"中国农科院揭示水稻钾离子转运蛋白 OsNHX2 提高耐冷性的分子机制 Molecular Plant","https:\u002F\u002Fwww.toutiao.com\u002Farticle\u002F7696347285219557922","10 月 12 日,中国农业科学院作物科学研究所水稻分子设计技术与应用创新团队揭示水稻钾离子转运蛋白 OsNHX2 通过调节细胞内钾离子积累来增强水稻耐冷性的作用机制,相关研究成果发表在 Molecular Plant 上。研究利用前期构建的多亲本高代互交群体,鉴定并克隆调控水稻耐冷性的关键基因 OsNHX2,发现该基因编码定位于液泡膜的钾离子转运蛋白,在低温胁迫下促进根系对钾离子的吸收并改变定位、抑制转运活性,从而促进胞质钾离子留存,提高水稻耐冷性。","## 中国农科院团队揭示钾离子稳态调控可提高水稻耐冷能力\n\n10月12日，中国农业科学院作物科学研究所水稻分子设计技术与应用创新团队揭示了水稻钾离子转运蛋白OsNHX2通过调节细胞内钾离子积累来增强水稻耐冷性的作用机制。相关研究成果发表在《分子植物（Molecular Plant）》上。\n\n![Image 1: 6a41f6e3-55a4-4bed-8895-f123559ea4f8.png](https:\u002F\u002Fp3-sign.toutiaoimg.com\u002Ftos-cn-i-axegupay5k\u002Fe96dedf24e70423290668656a1089d98~tplv-tt-origin-web:gif.jpeg?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1793069287&x-signature=h%2BPpAG%2FkNMW%2BhuASkuU56B%2F%2BvwE%3D)\n水稻起源于热带和亚热带地区，对低温敏感。低温胁迫会抑制水稻幼苗生长，降低结实率，最终造成减产。尽管农艺实践表明增施钾肥可缓解水稻低温伤害，但此前一直缺乏钾离子转运与水稻耐冷性之间的直接分子证据。\n\n研究团队利用前期构建的多亲本高代互交群体，鉴定并克隆了调控水稻耐冷性的关键基因 _OsNHX2_。研究发现，该基因编码一个定位于液泡膜的钾离子转运蛋白，在低温胁迫下，相关抑制因子表达下调，解除了对该蛋白的转录抑制，进而促进根系对钾离子的吸收；钾离子转运至地上部后，该蛋白改变其定位并抑制转运活性，从而促进胞质钾离子留存，最终提高水稻耐冷性。该研究为水稻耐冷分子育种提供了新靶点和重要理论基础。\n\n作科所博士后石慧敏和沈阳农业大学博士研究生邵奎添为该论文共同第一作者，作科所徐建龙研究员和张帆研究员为该论文共同通讯作者。该研究得到了国家重点研发计划项目、农业生物育种国家科技重大专项、中国农业科学院科技创新工程等项目的资助。\n\n原文链接：\n\nhttps:\u002F\u002Fwww.cell.com\u002Fmolecular-plant\u002Ffulltext\u002FS1674-2052(26)00341-2\n\n植物科学最前沿，专注于植物科学前沿进展、 资讯、 招聘信息的发布及方法软件共享等 。 投稿及招聘请后台回复“投稿” ，均为无偿； 商务合作请联系微信ID： zwkxqy ；","中国农业科学院作物科学研究所 2026-10-12","2026-10-12T00:00:00Z",82,{"impact":18,"substance":119,"depth":19,"authority":20,"freshness":120,"relevant":22,"comment":121},23,5,"国家级科研机构在《分子植物》发表的水稻耐冷分子机制原创成果，为耐冷育种提供新靶点，专业增量明确，但属细分基础研究且已发布一周，时效性一般。",[123],{"name":115,"url":112},[84,28,125,126],"水稻耐冷","钾离子转运",{"code":35,"slug":36,"name":37,"path":38,"parent_code":39},[],{"status":42,"locked":43,"version":44,"method":45,"evidence":130},{"candidates":131,"agricultural_evidence":14},[132,137,141],{"code":35,"score":133,"supported":14,"title":134,"abstract":135,"tags":136},11,[37],[37],[],{"code":98,"score":22,"supported":43,"title":138,"abstract":139,"tags":140},[],[],[84],{"code":54,"score":22,"supported":43,"title":142,"abstract":143,"tags":144},[],[],[28],[146,147],"中国农科院 水稻 OsNHX2 耐冷","水稻 钾离子转运蛋白 耐冷育种","中国农科院水稻OsNHX2耐冷-5336","2026-10-20T02:47:43.406677Z",{"id":151,"title":152,"url":153,"summary":154,"summary_zh":8,"content":155,"source_name":156,"source_url":8,"published_at":157,"category":12,"cover_url":8,"hotness":13,"is_selected":43,"score":158,"score_detail":159,"sources":162,"tags":164,"primary_topic":168,"secondary_topics":169,"classification":175,"search_phrases":202,"slug":205,"view_count":107,"doi":8,"paper":8,"created_at":206},5044,"山东首个粳稻分子育种中心在东营垦利揭牌 山东省农科院(垦利)水稻试验示范基地同步揭牌","https:\u002F\u002Fk.sina.com.cn\u002Farticle_7517400647_1c0126e4705909bxls.html","10月10日,山东水稻高质量发展研讨会暨\"黄河口大米\"现场观摩会在东营市垦利区举办,山东省农业科学院(垦利)水稻试验示范基地、山东省农业科学院粳稻分子育种中心揭牌。该中心聚焦黄淮稻区粳稻种源瓶颈,开展水稻种质挖掘、分子设计育种与优异新品种创制,重点培育抗除草剂、特色香米\u002F软米\u002F糯稻等专用品种,补齐山东粳稻分子育种硬件平台短板。","农村大众报东营讯 （记者刘真真）10月10日，山东水稻高质量发展研讨会暨“黄河口大米”现场观摩会在东营市垦利区举办。当日，山东省农业科学院（垦利）水稻试验示范基地、山东省农业科学院粳稻分子育种中心揭牌。\n\n山东省农业科学院粳稻分子育种中心是山东首个粳稻分子育种中心。据悉，该中心将聚焦黄淮稻区粳稻种源瓶颈问题，重点开展水稻种质挖掘、分子设计育种、优异新品种创制，瞄准优质粳稻攻关，补齐我省粳稻分子育种硬件平台短板。\n\n黄淮稻区是我国北方优质粳稻主产区和重要粮食生产基地，种植规模稳定、产业基础雄厚，是保障区域粮食安全、助力农民增收的重要板块。当前，随着规模化、轻简化、标准化种植快速普及，消费结构持续升级、盐碱地综合利用力度不断加大，现有主推粳稻品种短板逐步凸显，已难以适应现代农业高质量发展需求，主要存在三方面突出产业瓶颈：一是轻简化适配性不足，主栽品种普遍缺乏除草剂抗性，规模化生产杂草防控成本高、用工多、效率低，二是优质专用供给不足，品种类型以普通粳米为主，香米、软米、糯米等特色专用品种偏少，难以满足市场多元化、高品质消费需求，产业附加值提升空间受限；三是绿色抗逆能力偏弱，多数品种稻瘟病抗性不强、耐盐碱水平有限，易造成农药化肥过量投入，与绿色低碳、生态高效的发展导向不匹配。\n\n因此，山东省农业科学院立足湿地农业与生态研究所水稻种质改良与分子育种学科优势，整合全所分子育种、种质资源、示范推广优势资源，组建粳稻分子育种中心。\n\n据悉，山东省农科院粳稻分子育种中心将聚焦轻简化栽培需求，培育改良抗除草剂粳稻新品种，解决传统水稻生产除草难、成本高、用工重的痛点，支撑水稻规模化、机械化、轻简化生产。在补齐优质专用品种短板方面，该中心将针对市场消费升级趋势，定向改良食味品质，丰富香米、软米、糯稻等特色品种供给，优化品种结构，提升稻米产业附加值。在夯实绿色稳产生产基础方面，该中心将聚焦稻瘟病、盐碱胁迫等生产难题，提升品种抗病、耐盐、抗逆能力，推动水稻产业绿色低碳可持续发展。\n\n当日，山东省农业科学院（垦利）水稻试验示范基地揭牌。这是院地共建的盐碱地水稻综合试验示范平台，该基地将承担新品种鉴定评价、良种中试熟化、绿色栽培技术集成、现场观摩实训等任务，把实验室育种成果放到黄河三角洲盐碱地大田进行检验验证，破解科技成果转化“最后一公里”难题。\n\n黄河三角洲是我省盐碱地集中分布区域，垦利区近八成耕地属于不同程度的盐碱地，后备耕地资源潜力巨大，但土壤盐渍化是制约粮食生产的突出难题。近年来，山东省筛选了一大批适宜黄三角生态条件的水稻新品种，但黄河三角洲盐碱环境复杂多变，水稻品种还面临多重考验：部分品种耐盐适应性不稳定，适合重度盐碱地的优质粳稻仍然偏少；良种良法配套的普及程度有待提升；科企深度融合不够，优良品种产业化推广速度仍需加快。示范基地揭牌将有助于破解盐碱地水稻品种“水土不服”的难题，推动良种良法配套、科企深度融合。\n\n特别声明：以上文章内容仅代表作者本人观点，不代表新浪网观点或立场。如有关于作品内容、版权或其它问题请于作品发表后的30日内与新浪网联系。","农村大众报 新浪网 2026年10月10日","2026-10-10T00:00:00Z",65,{"impact":19,"substance":19,"depth":78,"authority":160,"freshness":120,"relevant":22,"comment":161},9,"省级首个粳稻分子育种平台落地，聚焦耐盐碱与轻简化育种，产业瓶颈分析具体，具行业参考价值。",[163],{"name":156,"url":153},[165,84,28,166,167],"盐碱地利用","耐盐碱水稻","黄河三角洲",{"code":35,"slug":36,"name":37,"path":38,"parent_code":39},[170],{"code":54,"slug":171,"name":172,"path":173,"parent_code":174},"biotechnology","生物育种与基因技术","\u002Ftopic\u002Finputs-equipment\u002Fbiotechnology","F",{"status":42,"locked":43,"version":44,"method":45,"evidence":176},{"candidates":177,"agricultural_evidence":14},[178,182,186,193,197],{"code":35,"score":49,"supported":14,"title":179,"abstract":180,"tags":181},[37],[37],[166],{"code":54,"score":49,"supported":14,"title":183,"abstract":184,"tags":185},[28],[28],[28],{"code":187,"score":188,"supported":14,"title":189,"abstract":190,"tags":192},"F4",3,[],[191],"除草",[],{"code":98,"score":22,"supported":43,"title":194,"abstract":195,"tags":196},[],[],[84],{"code":198,"score":22,"supported":43,"title":199,"abstract":200,"tags":201},"H2",[],[],[165],[203,204],"山东农科院 粳稻分子育种中心","垦利 盐碱地 水稻示范基地","山东农科院粳稻分子育种中心-5044","2026-10-16T00:13:11.440215Z",{"id":208,"title":209,"url":210,"summary":211,"summary_zh":8,"content":212,"source_name":213,"source_url":8,"published_at":214,"category":12,"cover_url":8,"hotness":13,"is_selected":14,"score":215,"score_detail":216,"sources":220,"tags":222,"primary_topic":226,"secondary_topics":227,"classification":228,"search_phrases":243,"slug":246,"view_count":99,"doi":8,"paper":8,"created_at":247},4936,"中国农科院作科所揭示OsNHX2转录及转录后调控水稻耐寒机制","https:\u002F\u002Fics.caas.cn\u002Fxwdt\u002Fzxlw1\u002Fa4a96ebcf726469db604c85c626c12b7.htm","中国农业科学院作物科学研究所最新研究通过GWAS在MAGIC群体中鉴定出OsNHX2,一种液泡膜定位的K+转运体,在苗期增强水稻耐寒性。OsNHX2通过促进地上部钾离子含量增加,刺激脯氨酸积累并降低ROS和MDA水平来增强耐寒性。OsNHX2编码区的自然变异导致K+转运能力差异。其表达受转录因子OsATH1负调控。论文发表于《Molecular Plant》(IF=32.7),为水稻耐寒分子育种提供了重要依据。","### Transcriptional and post-transcriptional regulation of OsNHX2 encoding a tonoplast-localized transporter controls intracellular K+ accumulation to regulate cold tolerance in rice\n\nHuimin Shi, Kuitian Shao, Zhihu Ding, Jian Feng, Zhiyuan Zhang, Huimin Cao, Wenyu Zhang, Xiuqin Zhao, Tianqing Zheng, Dapu Liu, Kai Chen, Wensheng Wang, Fan Zhang, Jianlong Xu\n\nMolecular Plant; 2026; IF: 32.7\n\nDOI:10.1016\u002Fj.molp.2026.10.002\n\nAbstract\n\nLow-temperature stress significantly reduces rice yield and grain quality. Identifying major cold-tolerance genes and deciphering their regulatory networks is therefore essential for rice molecular breeding for cold tolerance. Here, through a genome-wide association study (GWAS) in a multi-parent advanced generation intercross (MAGIC) population, we identified _OsNHX2_, a tonoplast-localized K+ transporter that enhances cold tolerance at the seedling stage. OsNHX2 enhances cold tolerance by promoting an increase in potassium ion content in shoots, which stimulates proline accumulation and reduces the levels of reactive oxygen species (ROS) and malondialdehyde (MDA). Natural variation in the coding region of _OsNHX2_ underlies differences in K+ transport ability. We further demonstrated that _OsNHX2_ expression is negatively regulated by the transcription factor OsATH1. One natural variant in the _OsNHX2_ promoter, a 45-bp deletion, elevates _OsNHX2_ expression by reducing OsATH1 binding. Notably, we found that OsNHX2 physically interacts with OsGAPC3, a cytosolic glyceraldehyde-3-phosphate dehydrogenase known to modulate responses to abiotic stresses via ROS signaling. This interaction masks the tonoplast-targeting signal of OsNHX2, altering its subcellular localization, impairing K+ transport, and promoting cytosolic K+ accumulation. Overexpression of _OsNHX2_ significantly increased the seed-setting rate under cold stress at the booting stage without compromising grain yield under normal conditions. Haplotype analysis revealed that rice accessions carrying the cold-tolerant _OsNHX2_ haplotype are predominantly distributed in higher-latitude regions, suggesting adaptive selection. Our findings demonstrate that OsNHX2, which is negatively regulated by OsATH1 and OsGAPC3 at both transcriptional and post-transcriptional levels, modulates intracellular K+ accumulation to control cold tolerance in rice.","中国农业科学院作物科学研究所 2026 年 10 月 14 日","2026-10-14T00:00:00Z",90,{"impact":18,"substance":217,"depth":218,"authority":78,"freshness":13,"relevant":22,"comment":219},24,19,"国家级科研机构在顶刊发表的水稻耐寒关键基因机制研究，方法新颖、结论可靠，对耐冷分子育种具有直接指导价值。",[221],{"name":213,"url":210},[84,28,223,224,225],"水稻耐寒","基因调控","作物科学",{"code":35,"slug":36,"name":37,"path":38,"parent_code":39},[],{"status":42,"locked":43,"version":44,"method":45,"evidence":229},{"candidates":230,"agricultural_evidence":14},[231,235,239],{"code":35,"score":133,"supported":14,"title":232,"abstract":233,"tags":234},[37],[37],[],{"code":54,"score":120,"supported":14,"title":236,"abstract":237,"tags":238},[],[28],[28,224],{"code":98,"score":22,"supported":43,"title":240,"abstract":241,"tags":242},[],[],[84],[244,245],"中国农科院作科所 OsNHX2 水稻耐寒","OsNHX2 钾离子转运 耐冷育种","中国农科院作科所OsNHX2水稻耐寒-4936","2026-10-15T00:06:01.809568Z",{"id":249,"title":250,"url":251,"summary":252,"summary_zh":8,"content":253,"source_name":254,"source_url":8,"published_at":255,"category":12,"cover_url":8,"hotness":13,"is_selected":43,"score":256,"score_detail":257,"sources":259,"tags":261,"primary_topic":264,"secondary_topics":265,"classification":266,"search_phrases":281,"slug":284,"view_count":22,"doi":8,"paper":8,"created_at":285},4932,"中国农业科学院基因组所揭示水稻器官边界建成的分子机制","https:\u002F\u002Fwww.toutiao.com\u002Farticle\u002F7695986677139685939","中国农业科学院农业基因组研究所超级稻种质创新团队揭示水稻器官边界建成的分子机制,相关成果发表在《植物细胞》(The Plant Cell)上。研究发现水稻中存在一类转录因子,在器官边界特异表达,像'分子开关'调控下游功能基因,可同时调控分蘖起始、叶枕发育等多类边界发育过程,最终决定水稻分蘖数、叶片夹角等多项核心产量性状。该研究完善了单子叶植物器官边界发育的基础理论,为禾本科作物的株型改良提供了基因靶标。","## 调控水稻边界的“分子开关”被发掘\n\n近日，中国农业科学院农业基因组研究所超级稻种质创新团队揭示了水稻器官边界建成的分子机制。相关研究成果发表在**《植物细胞（The Plant Cell）》**上。\n\n![Image 1](https:\u002F\u002Fp3-sign.toutiaoimg.com\u002Ftos-cn-i-axegupay5k\u002Faa1adec2158d4b3389687e4e0d992b67~tplv-tt-origin-web:gif.jpeg?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1792627567&x-signature=zHyeDh0z3p1wWRjpBdcvJIL3mEw%3D)\n\n水稻新器官的形成始终伴随边界区域产生，这类区域既是新旧器官的天然分界，也是新组织、新器官起始的核心位点，对器官形态建成至关重要。但不同类型边界是否存在统一的调控规律，目前缺少深入研究。\n\n研究发现，水稻中存在一类转录因子，在器官边界特异表达，像“分子开关”调控下游功能基因，可同时调控分蘖起始、叶枕发育等多类边界发育过程，最终决定水稻分蘖数、叶片夹角等多项核心产量性状。研究完善了单子叶植物器官边界发育的基础理论，为禾本科作物的株型改良提供了基因靶标。\n\n该研究得到国家自然科学基金、中国农业科学院科技创新工程、广东省重点领域研发计划等项目资助。\n\n原文链接：  \nhttps:\u002F\u002Fdoi.org\u002F10.1093\u002Fplcell\u002Fkoag152","中国农业科学院 今日头条 2026 年 10 月 13 日","2026-10-13T00:00:00Z",87,{"impact":217,"substance":18,"depth":19,"authority":78,"freshness":79,"relevant":22,"comment":258},"国家级科研机构在《植物细胞》发表的水稻器官边界调控机制突破，为禾本科作物株型改良提供基因靶标，专业价值高且时效性强，值得进入每日精选。",[260],{"name":254,"url":251},[37,84,28,262,263],"农业科技","株型改良",{"code":35,"slug":36,"name":37,"path":38,"parent_code":39},[],{"status":42,"locked":43,"version":44,"method":45,"evidence":267},{"candidates":268,"agricultural_evidence":14},[269,273,277],{"code":35,"score":49,"supported":14,"title":270,"abstract":271,"tags":272},[37],[37],[37],{"code":98,"score":22,"supported":43,"title":274,"abstract":275,"tags":276},[],[],[84],{"code":54,"score":22,"supported":43,"title":278,"abstract":279,"tags":280},[],[],[28],[282,283],"中国农科院基因组所 水稻 器官边界","水稻 分蘖数 叶片夹角 基因","中国农科院基因组所水稻器官边界-4932","2026-10-15T00:06:01.448852Z",{"id":287,"title":288,"url":289,"summary":290,"summary_zh":8,"content":291,"source_name":292,"source_url":8,"published_at":293,"category":12,"cover_url":8,"hotness":13,"is_selected":43,"score":256,"score_detail":294,"sources":296,"tags":298,"primary_topic":302,"secondary_topics":303,"classification":304,"search_phrases":335,"slug":338,"view_count":79,"doi":8,"paper":8,"created_at":339},4126,"为水稻打造一支抗旱「黄金战队」——中国农科院作科所王文生团队解析OsMYB2\u002FOsGH18\u002FOsCAD3分子模块","https:\u002F\u002Fcaas.cn\u002Fxwzx\u002Fspnk\u002Fmtsp\u002F5ef2baa174684ce5a9020b77f7f4857b.htm","中国农业科学院作物科学研究所王文生研究员带领的水稻分子设计技术与应用创新团队，从国家种质库3000份稻种测序成果中精选408份核心种质开展多阶段抗旱表型鉴定，挖掘出由OsMYB2、OsGH18、OsCAD3构成的抗旱「黄金战队」分子模块——OsMYB2感知干旱信号激活下游基因；OsGH18通过蛋白互作解锁OsCAD3活性；OsCAD3大量合成木质素加固细胞壁以减轻萎蔫减少水分流失。团队已尝试将该模块导入主栽品种黄华占，初步试验证明能显著提升抗旱能力。","![Image 1](https:\u002F\u002Fcaas.cn\u002Fimages\u002F2026-09\u002F0a2b2f9c34594bb0a281974cf92eba4b.jpg)\n\n每产出1公斤大米，水稻生长就要消耗约1000升水。在气候变化的大背景下，极端高温、降雨分布不均等问题频发，干旱威胁着水稻生产。干旱不仅会压低水稻株高、生物量，还会造成结实率、千粒重下降，既降低产量也影响稻米品质，严重干旱甚至会对水稻造成致命打击。培育耐旱水稻品种，成为育种领域一块难啃的硬骨头。\n\n水稻的耐旱并非由单一基因掌控，而是受多个基因共同调控，同时苗期与全生育期抗旱评价标准各不相同，给育种工作带来重重阻碍。中国农业科学院[作物科学研究所](http:\u002F\u002Fics.caas.cn\u002F)王文生研究员带领的水稻分子设计技术与应用创新团队，从国家种质库海量资源中筛选材料，依托3000份稻种测序成果，精选408份核心种质，开展多阶段抗旱表型鉴定，结合分子生物学技术，挖掘出由OsMYB2、OsGH18、OsCAD3构成的抗旱“黄金战队”分子模块。\n\n这支“基因战队”分工明确，配合默契。OsMYB2如同“总指挥”，感知干旱信号后激活下游两个基因表达；OsGH18充当“信号兵”，通过蛋白互作像一把分子钥匙，解锁OsCAD3蛋白的活性；OsCAD3作为“工程兵”，被激活后大量合成木质素。木质素好比植物细胞壁中的 “钢筋”，加固细胞壁结构，减轻干旱下植株萎蔫、减少水分流失，以此提升水稻全生育期的耐旱能力。\n\n这三个基因在不同水稻品种中存在不同单倍型，不同版本的组合，带来了耐旱能力的差异。科研人员借助人工智能筛选出最优基因组合，还可以预测杂交后代的抗旱表现。目前，科研团队已经尝试将这套基因模块导入主栽品种黄华占，初步试验证明，能够显著提升该品种抗旱能力。\n\n未来，育种家将利用分子标记辅助选择，把这套抗旱基因模块聚合到更多优良水稻品种中，力争实现丰水条件下高产，干旱条件下稳产少减产。这既能充分利用干旱边际土地，节约农业水资源，守护国家粮食安全，也能稳定农户种植收益，为农业可持续发展注入基因力量。\n\n![Image 2: 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