Analysis of ecological characteristics and molecular mechanisms related to reproductive strategy in marine angiosperm Zostera marina

海洋被子植物大叶藻生态特征及繁殖策略相关分子机制分析

• 批准号: 23658177
• 负责人: KAKINUMA MAKOTO
• 金额: $ 2.41万
• 依托单位: Mie University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-23658177/
• 关键词: 海産被子植物; アマモ; 海草; 種子; 発芽; 繁殖; 花穂; 花器官形成; 多年生

The intertidal seagrass Zostera marina is one of the major components of Zostera beds which are distributed along the coastline of Japan. In general, Z. marina shows two types of reproductive strategy, annual-type and perennial-type. Although morphological characteristics of annual Z. marina shoots were greatly affected by environmental water temperature during seed and germination periods, the influence of environmental water temperature on those of perennial Z. marina shoots was not observed. These results suggest that the reproductive strategy of annual Z. marina is different at individual level from that of perennial Z. marina. Candidate genes including floral homeotic MADS-box genes, which may be responsible for the reproductive strategy of Z. marina, were isolated and identified by expression analysis of the genes in Z. marina seedlings, various organs in the shoots, and spadices.

潮间带海草Zostera码头是Zostera床的主要组成部分之一，Zostera床是在日本海岸线上分布的。一般而言，Z. Marina展示了两种类型的生殖策略，年度类型和多年生类型。尽管在种子和发芽周期期间，一年一度的Z.码头芽的形态特征受到环境水温的极大影响，但未观察到环境水温对多年生Z玛丽娜芽的影响。这些结果表明，年度Z.码头的生殖策略在个体水平上与多年生Z. Marina的生殖策略不同。通过对Z.码头幼苗中的基因表达分析，芽中的各种器官和小脚的基因的表达分析来隔离并鉴定在内的候选基因，包括Z. Marina的生殖策略，包括Z. Marina的生殖策略。

项目成果

DDBJ/EMBL/GenBank アクセッション番号ZmMADS1 cDNA : AB661632 ZmMADS2 cDNA : AB661633 ZmMADS3 cDNA : AB661634 ZmMADS4 cDNA : AB661635 ZmMADS5 cDNA:AB661636

DDBJ/EMBL/GenBank 登录号 ZmMADS1 cDNA：AB661632 ZmMADS2 cDNA：AB661633 ZmMADS3 cDNA：AB661634 ZmMADS4 cDNA：AB661635 ZmMADS5 cDNA：AB661636