Article(id=1307407393919357163, tenantId=1146029695717560320, journalId=1306273872116547672, issueId=1307407384415068771, articleNumber=null, orderNo=null, doi=10.16819/j.1001-7216.2026.240718, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1721836800000, receivedDateStr=2024-07-25, revisedDate=1727366400000, revisedDateStr=2024-09-27, acceptedDate=null, acceptedDateStr=null, onlineDate=1789639813165, onlineDateStr=2026-09-17, pubDate=1767974400000, pubDateStr=2026-01-10, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1789639813165, onlineIssueDateStr=2026-09-17, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1789639813165, creator=13701087609, updateTime=1789639813165, updator=13701087609, issue=Issue{id=1307407384415068771, tenantId=1146029695717560320, journalId=1306273872116547672, year='2026', volume='40', issue='1', pageStart='1', pageEnd='144', issueExtLink='null', onlineDate='null', pubDate='1767974400000', pubDateStr='2026-01-10', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1789639810898, creator='13701087609', updateTime=1789640035985, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1307408328565482276, tenantId=1146029695717560320, journalId=1306273872116547672, issueId=1307407384415068771, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1307408328565482277, tenantId=1146029695717560320, journalId=1306273872116547672, issueId=1307407384415068771, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=85, endPage=94, ext={EN=ArticleExt(id=1307407394141655276, articleId=1307407393919357163, tenantId=1146029695717560320, journalId=1306273872116547672, language=EN, title=Phenotypic Identification and Gene Fine Mapping of the Lesion Mimic and Early Senescence Mutant lmes7 in Rice, columnId=1307407385149071973, journalTitle=Chinese Journal of Rice Science, columnName=Research Papers, runingTitle=null, highlight=null, articleAbstract=
【Objective】

To study the molecular mechanisms of defense response and leaf premature senescence in rice,

【Method】

we screened a lesion mimic and early senescence mutant, designated lmes7 (lesion mimic and early senescence 7), from a mutant library of the japonica rice variety Wuyunjing 7. The main agronomic traits of the mutant and the photosynthetic pigment content in its leaves were measured. The target gene was identified through fine mapping and sequencing, and its encoded protein was analyzed and aligned.

【Result】

Physiological analysis showed that the photosynthetic pigment content in the mutant leaves was significantly lower than that of the WT, along with excessive accumulation of reactive oxygen species (ROS). In the lmes7 mutant, the effective tiller number, plant height, flag leaf length, flag leaf width, panicle length, grain number per panicle, seed setting rate, and grain yield per plant decreased significantly, while grain thickness increased significantly. Genetic analysis indicated that the mutant phenotype was controlled by a single recessive nuclear gene. Using map-based cloning, the target gene was fine-mapped to a 90-kb region between RM28486 and RM28489 on chromosome 12. PCR and sequencing revealed a 7-bp deletion in OsACL-A2, a gene encoding ATP-citrate lyase, in the lmes7 mutant, resulting in a frameshift mutation and premature termination of translation. Phylogenetic analysis and sequence alignment indicated that the mutation site of lmes7 lies within the succinyl-CoA synthetase domain, identifying lmes7 as a novel allelic variant of OsACL-A2.

, authors=Yaping LIU1, Yici DONG1, Junyan ZHENG1, Xuan QIU1, Pengcheng LIU1, Yafeng YE2, Binmei LIU2, Xifeng CHEN1, Bojun MA1, authorsList=Yaping LIU, Yici DONG, Junyan ZHENG, Xuan QIU, Pengcheng LIU, Yafeng YE, Binmei LIU, Xifeng CHEN, Bojun MA, authorCompany=null, correspAuthors=Binmei LIU, Xifeng CHEN, Bojun MA, authorNote=

#

These authors contributed equally to this paper

, correspAuthorsNote=

*

email:
, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1307407394733052141, articleId=1307407393919357163, tenantId=1146029695717560320, journalId=1306273872116547672, language=CN, title=水稻类病变早衰突变体lmes7的鉴定与基因精细定位, columnId=1307407385430090343, journalTitle=中国水稻科学, columnName=研究报告, runingTitle=null, highlight=null, articleAbstract=
【目的】

研究水稻防御反应和叶片早衰相关基因的分子机理。

【方法】

从粳稻武运粳7号诱变库中筛选出一个类病变早衰突变体lmes7(lesion mimic and early senescence 7)。调查统计了该突变体的主要农艺性状,对其叶片中的光合色素含量进行测定,利用图位克隆技术对目的基因进行精细定位和测序鉴定,并对其编码蛋白进行分析与序列比对。

【结果】

突变体叶片中的光合色素含量比WT极显著降低,且细胞中存在活性氧(reactive oxygen species, ROS)的过量积累;突变体植株的生长发育受到严重影响,有效分蘖数、株高、剑叶长、剑叶宽、穗长、每穗粒数、结实率及单株产量等均显著下降,但粒厚显著增加;遗传分析表明,lmes7的突变表型受单隐性核基因控制;利用图位克隆技术将目的基因精细定位在水稻12号染色体上RM28486和RM28489之间的90 kb区域内;PCR测序分析表明,lmes7突变体中一个编码ATP-柠檬酸裂解酶的目标基因OsACL-A2发生了7个碱基缺失,导致该基因发生移码突变,蛋白翻译提前终止;对水稻OsACL-A2蛋白的进化分析与序列比对可知,lmes7突变位点发生在琥珀酰辅酶A合成酶结构域,lmes7是OsACL-A2新的等位变异。

, authors=刘亚萍1, 董译词1, 郑君妍1, 邱绚1, 刘鹏程1, 叶亚峰2, 刘斌美2, *, *, 陈析丰1, *, *, 马伯军1, *, *, authorsList=刘亚萍, 董译词, 郑君妍, 邱绚, 刘鹏程, 叶亚峰, 刘斌美, 陈析丰, 马伯军, authorCompany=null, correspAuthors=刘斌美, 陈析丰, 马伯军, authorNote=

#

共同第一作者

, correspAuthorsNote=

*

email:
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水稻类病变早衰突变体lmes7的鉴定与基因精细定位
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刘亚萍 1 , 董译词 1 , 郑君妍 1 , 邱绚 1 , 刘鹏程 1 , 叶亚峰 2 , 刘斌美 2, *, * , 陈析丰 1, *, * , 马伯军 1, *, *
中国水稻科学 | 研究报告 2026,40(1): 85-94
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中国水稻科学 |研究报告 2026 , 40 (1) : 85 -94
水稻类病变早衰突变体lmes7的鉴定与基因精细定位
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刘亚萍1, 董译词1, 郑君妍1, 邱绚1, 刘鹏程1, 叶亚峰2, 刘斌美2, *, * , 陈析丰1, *, * , 马伯军1, *, *
作者信息
  • 1浙江师范大学生命科学学院,浙江 金华 321004
  • 2中国科学院合肥物质科学研究院,合肥 230031
通讯作者:
作者简介:

#

共同第一作者

Phenotypic Identification and Gene Fine Mapping of the Lesion Mimic and Early Senescence Mutant lmes7 in Rice
Yaping LIU1, Yici DONG1, Junyan ZHENG1, Xuan QIU1, Pengcheng LIU1, Yafeng YE2, Binmei LIU2 , Xifeng CHEN1 , Bojun MA1
Affiliations
  • 1College of Life Sciences, Zhejiang Normal University, Jinhua 321004, China
  • 2Hefei Institutes of Physical Science, Chinese Academy of Science, Hefei 230031, China
  • Corresponding Author:
出版时间: 2026-01-10 doi: 10.16819/j.1001-7216.2026.240718
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【目的】

研究水稻防御反应和叶片早衰相关基因的分子机理。

【方法】

从粳稻武运粳7号诱变库中筛选出一个类病变早衰突变体lmes7(lesion mimic and early senescence 7)。调查统计了该突变体的主要农艺性状,对其叶片中的光合色素含量进行测定,利用图位克隆技术对目的基因进行精细定位和测序鉴定,并对其编码蛋白进行分析与序列比对。

【结果】

突变体叶片中的光合色素含量比WT极显著降低,且细胞中存在活性氧(reactive oxygen species, ROS)的过量积累;突变体植株的生长发育受到严重影响,有效分蘖数、株高、剑叶长、剑叶宽、穗长、每穗粒数、结实率及单株产量等均显著下降,但粒厚显著增加;遗传分析表明,lmes7的突变表型受单隐性核基因控制;利用图位克隆技术将目的基因精细定位在水稻12号染色体上RM28486和RM28489之间的90 kb区域内;PCR测序分析表明,lmes7突变体中一个编码ATP-柠檬酸裂解酶的目标基因OsACL-A2发生了7个碱基缺失,导致该基因发生移码突变,蛋白翻译提前终止;对水稻OsACL-A2蛋白的进化分析与序列比对可知,lmes7突变位点发生在琥珀酰辅酶A合成酶结构域,lmes7是OsACL-A2新的等位变异。

水稻  /  类病变早衰  /  lmes7突变体  /  表型鉴定  /  精细定位
【Objective】

To study the molecular mechanisms of defense response and leaf premature senescence in rice,

【Method】

we screened a lesion mimic and early senescence mutant, designated lmes7 (lesion mimic and early senescence 7), from a mutant library of the japonica rice variety Wuyunjing 7. The main agronomic traits of the mutant and the photosynthetic pigment content in its leaves were measured. The target gene was identified through fine mapping and sequencing, and its encoded protein was analyzed and aligned.

【Result】

Physiological analysis showed that the photosynthetic pigment content in the mutant leaves was significantly lower than that of the WT, along with excessive accumulation of reactive oxygen species (ROS). In the lmes7 mutant, the effective tiller number, plant height, flag leaf length, flag leaf width, panicle length, grain number per panicle, seed setting rate, and grain yield per plant decreased significantly, while grain thickness increased significantly. Genetic analysis indicated that the mutant phenotype was controlled by a single recessive nuclear gene. Using map-based cloning, the target gene was fine-mapped to a 90-kb region between RM28486 and RM28489 on chromosome 12. PCR and sequencing revealed a 7-bp deletion in OsACL-A2, a gene encoding ATP-citrate lyase, in the lmes7 mutant, resulting in a frameshift mutation and premature termination of translation. Phylogenetic analysis and sequence alignment indicated that the mutation site of lmes7 lies within the succinyl-CoA synthetase domain, identifying lmes7 as a novel allelic variant of OsACL-A2.

rice  /  lesion mimic and early senescence  /  lmes7  /  phenotypic identification  /  fine mapping
刘亚萍, 董译词, 郑君妍, 邱绚, 刘鹏程, 叶亚峰, 刘斌美, 陈析丰, 马伯军. 水稻类病变早衰突变体lmes7的鉴定与基因精细定位. 中国水稻科学, 2026 , 40 (1) : 85 -94 . DOI: 10.16819/j.1001-7216.2026.240718
Yaping LIU, Yici DONG, Junyan ZHENG, Xuan QIU, Pengcheng LIU, Yafeng YE, Binmei LIU, Xifeng CHEN, Bojun MA. Phenotypic Identification and Gene Fine Mapping of the Lesion Mimic and Early Senescence Mutant lmes7 in Rice[J]. Chinese Journal of Rice Science, 2026 , 40 (1) : 85 -94 . DOI: 10.16819/j.1001-7216.2026.240718
  • 国家自然科学基金资助项目(32071987; 32101697)
  • 浙江省自然科学基金资助项目(LQ22C130005; LZ23C130004; Z24C130016)
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2026年第40卷第1期
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doi: 10.16819/j.1001-7216.2026.240718
  • 接收时间:2024-07-25
  • 首发时间:2026-09-17
  • 出版时间:2026-01-10
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  • 收稿日期:2024-07-25
  • 修回日期:2024-09-27
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国家自然科学基金资助项目(32071987; 32101697)
浙江省自然科学基金资助项目(LQ22C130005; LZ23C130004; Z24C130016)
作者信息
    1浙江师范大学生命科学学院,浙江 金华 321004
    2中国科学院合肥物质科学研究院,合肥 230031

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2种不同金属材料的力学参数
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属
Genus
种数
Number of
species
占总种数比例
Percentage of total
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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