Article(id=1236286119223022077, tenantId=1146029695717560320, journalId=1235980609244409860, issueId=1236286111962690215, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1000-2561.2023.01.001, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1649779200000, receivedDateStr=2022-04-13, revisedDate=1652976000000, revisedDateStr=2022-05-20, acceptedDate=null, acceptedDateStr=null, onlineDate=1772683179907, onlineDateStr=2026-03-05, pubDate=1674576000000, pubDateStr=2023-01-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1772683179907, onlineIssueDateStr=2026-03-05, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1772683179907, creator=13701087609, updateTime=1772683179907, updator=13701087609, issue=Issue{id=1236286111962690215, tenantId=1146029695717560320, journalId=1235980609244409860, year='2023', volume='44', issue='1', pageStart='1', pageEnd='223', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1772683178177, creator=13701087609, updateTime=1772683343075, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1236286803662139491, tenantId=1146029695717560320, journalId=1235980609244409860, issueId=1236286111962690215, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1236286803662139492, tenantId=1146029695717560320, journalId=1235980609244409860, issueId=1236286111962690215, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=1, endPage=8, ext={EN=ArticleExt(id=1236286120921715232, articleId=1236286119223022077, tenantId=1146029695717560320, journalId=1235980609244409860, language=EN, title=Functional Validation of Interaction Between Cassava MeCML24 and MeSAUR1 to Regulate the Expression of MeAGPS1a, columnId=1236256430337085821, journalTitle=Chinese Journal of Tropical Crops, columnName=Omics & Biotechnology, runingTitle=null, highlight=null, articleAbstract=

Cassava is an important cash crop in Southern China, which is enriched with starch in the tuber roots. The analysis of the regulation mechanism of starch synthesis in cassava root would contribute to the improvement of yield and high starch molecular in cassava. AGPase is composed of large subunit and small subunit, and it catalyzes G-1-P and ATP to form ADPG and PPi, in which ADPG is the substrate of starch biosynthesis. Therefore, AGPase is a rate-limiting enzyme in plant starch synthesis, and improving the activity of AGPase is beneficial for the accumulation of crop starch and the improvement of yield. The small subunit encoded by MeAGPS1a is the catalytic center of AGPase in cassava. Previous studies have shown that the growth response factor MeSAUR1 as a transcription factor positively regulates the expression of MeAGPS1a gene, and yeast two-hybrid screening of a cassava cDNA library revealed that the calmodulin-like (CML) member MeCML24 is a candidate interacting protein of MeSAUR1. To determine the interaction between MeCML24 and MeSAUR1, and MeCML24 was cloned from the genome of SC8 cassava variety in this study. The length of CDS region of MeCML24 was 492 bp, encoding 163 amino acids. The physicochemical properties and secondary structure analysis of MeCML24 showed that the value of theoretical pI was 4.38, which belonging to hydrophilic protein with α-helix accounting for 52.76%, random coil accounting for 30.06%, and beta turn accounting for 11.04%. Yeast two-hybrid vector BD-MeCML24 was constructed, and the self-activation experiment showed that MeCML24 had no self-activation. Yeast two-hybrid point-to-point experiment revealed that yeast strains co-transfected with AD-MeSAUR1 and BD-MeCML24 plasmids turned blue on nutrient medium with SD/TLHA+x-α-gal, indicating that MeCML24 interacted with MeSAUR1. The fusion protein MeSAUR1-nEYFP and MeCML24-cEYFP were co-expressed in tobacco leaves by bimolecular fluorescence complementation (BiFC) experiment, and the fluorescence signal of yellow fluorescent protein EYFP was detected under laser confocal microscope, which further proved the interaction between MeCML24 and MeSAUR1. Finally, the interaction between MeCML24 and MeSAUR1 negatively regulated the expression of MeAGPS1a by double luciferase experiment. The study revealed the mechanism of MeSAUR1 and MeCML24 synergistically regulating MeAGPS1a gene expression in cassava, and found that the calmodulin-like protein MeCML24 regulating the expression of MeAGPS1a, a key gene for starch synthesis in cassava root. This study would provide a theoretical basis for cultivating excellent cassava varieties by molecular biology technology.

, correspAuthors=Xin CHEN, Mengting GENG, authorNote=null, correspAuthorsNote=
*CHEN Xin,E-mail:
GENG Mengting,E-mail:
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木薯是华南地区重要的经济作物,其块根富含淀粉。解析木薯块根淀粉合成调控机理将有助于木薯高产、高淀粉分子改良。AGPase由大亚基和小亚基构成,催化1-磷酸葡萄糖和ATP形成腺苷二磷酸葡萄糖和焦磷酸,其中腺苷二磷酸葡萄糖为淀粉生物合成的底物。AGPase酶是植物淀粉合成的限速酶,提高AGPase酶活性,有利于作物淀粉的积累及产量的提高。木薯MeAGPS1a基因编码的小亚基是AGPase的催化中心,前期研究表明生长素响应因子MeSAUR1作为转录因子正调控MeAGPS1a基因表达,酵母双杂交筛选木薯cDNA文库显示钙调素类似蛋白(CaM-like, CML)成员MeCML24为MeSAUR1的候选互作蛋白。为了确定MeCML24和MeSAUR1的互作关系,本研究从‘SC8’木薯品种基因组克隆了MeCML24基因,该基因的CDS区长度为492 bp,编码163个氨基酸。MeCML24蛋白的理化性质及二级结构分析显示,该蛋白理论等电点pI值4.38,属于亲水性蛋白,α-螺旋占52.76%,无规则卷曲占30.06%,β-转角结构占11.04%。构建酵母双杂交载体BD-MeCML24,自激活实验表明MeCML24不具有自激活活性。酵母双杂交点对点实验发现,共转AD-MeSAUR1和BD-MeCML24质粒的酵母菌株在SD/TLHA+x-α-gal培养基上变蓝,表明MeCML24与MeSAUR1存在互作关系。采用双分子荧光互补(BiFC)实验,将融合蛋白MeSAUR1-nEYFP和MeCML24-cEYFP在烟草叶片中共表达,在激光共聚焦显微镜下检测出黄色荧光蛋白EYFP的荧光信号,进一步证明了MeCML24与MeSAUR1互作。最后利用双荧光素酶实验证明MeCML24与MeSAUR1互作负调控MeAGPS1a基因表达。本研究揭示了木薯MeSAUR1与MeCML24协同调控MeAGPS1a基因表达的机制,发现钙调素类似蛋白MeCML24参与调控木薯块根淀粉合成关键基因MeAGPS1a表达,为利用分子生物学技术培育木薯优良品种提供了理论基础。

, correspAuthors=陈新, 耿梦婷, authorNote=null, correspAuthorsNote=
*陈新,E-mail:
耿梦婷,E-mail:
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郑婉茹(1997—),女,硕士研究生,研究方向:作物分子育种。

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郑婉茹(1997—),女,硕士研究生,研究方向:作物分子育种。

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郑婉茹(1997—),女,硕士研究生,研究方向:作物分子育种。

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木薯MeCML24与MeSAUR1互作调控MeAGPS1a表达的功能验证
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郑婉茹 1, 2 , 丁凯旋 4 , 陆小花 1, 3 , 李琳琳 1, 2 , 王超群 1, 2 , 陈银华 1, 2 , 姚远 3 , 陈新 3, * , 耿梦婷 1, 2, *
热带作物学报 | 组学与生物技术 2023,44(1): 1-8
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热带作物学报 | 组学与生物技术 2023, 44(1): 1-8
木薯MeCML24与MeSAUR1互作调控MeAGPS1a表达的功能验证
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郑婉茹1, 2, 丁凯旋4, 陆小花1, 3, 李琳琳1, 2, 王超群1, 2, 陈银华1, 2, 姚远3, 陈新3, * , 耿梦婷1, 2, *
作者信息
  • 1.海南大学热带作物学院,海南海口 570228
  • 2.海南省热带生物资源可持续利用国家重点实验室培育基地,海南海口 570228
  • 3.中国热带农业科学院热带生物技术研究所,海南海口 571101
  • 4.海南省种子总站,海南海口 571100
  • 郑婉茹(1997—),女,硕士研究生,研究方向:作物分子育种。

通讯作者:

*陈新,E-mail:
耿梦婷,E-mail:
Functional Validation of Interaction Between Cassava MeCML24 and MeSAUR1 to Regulate the Expression of MeAGPS1a
Wanru ZHENG1, 2, Kaixuan DING4, Xiaohua LU1, 3, Linlin LI1, 2, Chaoqun WANG1, 2, Yinhua CHEN1, 2, Yuan YAO3, Xin CHEN3, * , Mengting GENG1, 2, *
Affiliations
  • 1. College of Tropical Crops, Hainan University, Haikou, Hainan 570228, China
  • 2. Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources, Haikou, Hainan 570228, China
  • 3. Institute of Tropical Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan 571101, China
  • 4. Hainan Seed Station, Haikou, Hainan 571100, China
出版时间: 2023-01-25 doi: 10.3969/j.issn.1000-2561.2023.01.001
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木薯是华南地区重要的经济作物,其块根富含淀粉。解析木薯块根淀粉合成调控机理将有助于木薯高产、高淀粉分子改良。AGPase由大亚基和小亚基构成,催化1-磷酸葡萄糖和ATP形成腺苷二磷酸葡萄糖和焦磷酸,其中腺苷二磷酸葡萄糖为淀粉生物合成的底物。AGPase酶是植物淀粉合成的限速酶,提高AGPase酶活性,有利于作物淀粉的积累及产量的提高。木薯MeAGPS1a基因编码的小亚基是AGPase的催化中心,前期研究表明生长素响应因子MeSAUR1作为转录因子正调控MeAGPS1a基因表达,酵母双杂交筛选木薯cDNA文库显示钙调素类似蛋白(CaM-like, CML)成员MeCML24为MeSAUR1的候选互作蛋白。为了确定MeCML24和MeSAUR1的互作关系,本研究从‘SC8’木薯品种基因组克隆了MeCML24基因,该基因的CDS区长度为492 bp,编码163个氨基酸。MeCML24蛋白的理化性质及二级结构分析显示,该蛋白理论等电点pI值4.38,属于亲水性蛋白,α-螺旋占52.76%,无规则卷曲占30.06%,β-转角结构占11.04%。构建酵母双杂交载体BD-MeCML24,自激活实验表明MeCML24不具有自激活活性。酵母双杂交点对点实验发现,共转AD-MeSAUR1和BD-MeCML24质粒的酵母菌株在SD/TLHA+x-α-gal培养基上变蓝,表明MeCML24与MeSAUR1存在互作关系。采用双分子荧光互补(BiFC)实验,将融合蛋白MeSAUR1-nEYFP和MeCML24-cEYFP在烟草叶片中共表达,在激光共聚焦显微镜下检测出黄色荧光蛋白EYFP的荧光信号,进一步证明了MeCML24与MeSAUR1互作。最后利用双荧光素酶实验证明MeCML24与MeSAUR1互作负调控MeAGPS1a基因表达。本研究揭示了木薯MeSAUR1与MeCML24协同调控MeAGPS1a基因表达的机制,发现钙调素类似蛋白MeCML24参与调控木薯块根淀粉合成关键基因MeAGPS1a表达,为利用分子生物学技术培育木薯优良品种提供了理论基础。

木薯  /  MeCML24蛋白  /  MeSAUR1蛋白  /  互作蛋白  /  MeAGPS1a启动子  /  转录调控

Cassava is an important cash crop in Southern China, which is enriched with starch in the tuber roots. The analysis of the regulation mechanism of starch synthesis in cassava root would contribute to the improvement of yield and high starch molecular in cassava. AGPase is composed of large subunit and small subunit, and it catalyzes G-1-P and ATP to form ADPG and PPi, in which ADPG is the substrate of starch biosynthesis. Therefore, AGPase is a rate-limiting enzyme in plant starch synthesis, and improving the activity of AGPase is beneficial for the accumulation of crop starch and the improvement of yield. The small subunit encoded by MeAGPS1a is the catalytic center of AGPase in cassava. Previous studies have shown that the growth response factor MeSAUR1 as a transcription factor positively regulates the expression of MeAGPS1a gene, and yeast two-hybrid screening of a cassava cDNA library revealed that the calmodulin-like (CML) member MeCML24 is a candidate interacting protein of MeSAUR1. To determine the interaction between MeCML24 and MeSAUR1, and MeCML24 was cloned from the genome of SC8 cassava variety in this study. The length of CDS region of MeCML24 was 492 bp, encoding 163 amino acids. The physicochemical properties and secondary structure analysis of MeCML24 showed that the value of theoretical pI was 4.38, which belonging to hydrophilic protein with α-helix accounting for 52.76%, random coil accounting for 30.06%, and beta turn accounting for 11.04%. Yeast two-hybrid vector BD-MeCML24 was constructed, and the self-activation experiment showed that MeCML24 had no self-activation. Yeast two-hybrid point-to-point experiment revealed that yeast strains co-transfected with AD-MeSAUR1 and BD-MeCML24 plasmids turned blue on nutrient medium with SD/TLHA+x-α-gal, indicating that MeCML24 interacted with MeSAUR1. The fusion protein MeSAUR1-nEYFP and MeCML24-cEYFP were co-expressed in tobacco leaves by bimolecular fluorescence complementation (BiFC) experiment, and the fluorescence signal of yellow fluorescent protein EYFP was detected under laser confocal microscope, which further proved the interaction between MeCML24 and MeSAUR1. Finally, the interaction between MeCML24 and MeSAUR1 negatively regulated the expression of MeAGPS1a by double luciferase experiment. The study revealed the mechanism of MeSAUR1 and MeCML24 synergistically regulating MeAGPS1a gene expression in cassava, and found that the calmodulin-like protein MeCML24 regulating the expression of MeAGPS1a, a key gene for starch synthesis in cassava root. This study would provide a theoretical basis for cultivating excellent cassava varieties by molecular biology technology.

cassava  /  MeCML24 protein  /  MeSAUR1 protein  /  interacting protein  /  MeAGPS1a promoter  /  transcriptional regulation
郑婉茹, 丁凯旋, 陆小花, 李琳琳, 王超群, 陈银华, 姚远, 陈新, 耿梦婷. 木薯MeCML24与MeSAUR1互作调控MeAGPS1a表达的功能验证. 热带作物学报, 2023 , 44 (1) : 1 -8 . DOI: 10.3969/j.issn.1000-2561.2023.01.001
Wanru ZHENG, Kaixuan DING, Xiaohua LU, Linlin LI, Chaoqun WANG, Yinhua CHEN, Yuan YAO, Xin CHEN, Mengting GENG. Functional Validation of Interaction Between Cassava MeCML24 and MeSAUR1 to Regulate the Expression of MeAGPS1a[J]. Chinese Journal of Tropical Crops, 2023 , 44 (1) : 1 -8 . DOI: 10.3969/j.issn.1000-2561.2023.01.001
  • 国家自然科学基金项目(31960058)
  • 海南省研究生创新科研课题(Hys2020-140)
2023年第44卷第1期
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doi: 10.3969/j.issn.1000-2561.2023.01.001
  • 接收时间:2022-04-13
  • 首发时间:2026-03-05
  • 出版时间:2023-01-25
补充材料
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  • 收稿日期:2022-04-13
  • 修回日期:2022-05-20
基金
国家自然科学基金项目(31960058)
海南省研究生创新科研课题(Hys2020-140)
作者信息
    1.海南大学热带作物学院,海南海口 570228
    2.海南省热带生物资源可持续利用国家重点实验室培育基地,海南海口 570228
    3.中国热带农业科学院热带生物技术研究所,海南海口 571101
    4.海南省种子总站,海南海口 571100

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*陈新,E-mail:
耿梦婷,E-mail:
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https://castjournals.cast.org.cn/joweb/rdzwxb/CN/10.3969/j.issn.1000-2561.2023.01.001
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2种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
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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