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Establishment of resistance to stresses caused by soil moisture fluctuation through strengthening the ability of plastic response ability of root system in rice

通过增强水稻根系塑性反应能力建立对土壤水分波动胁迫的抵抗能力

基本信息

批准号：
22380013
负责人：
YAMAUCHI Akira
金额：
$ 11.81万
依托单位：
Nagoya University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2010
资助国家：
日本
起止时间：
2010 至 2012
项目状态：
已结题

项目摘要

This study aimed to examine the functional roles of the ability of the plant to change its development as environmental conditions change, which is known as phenotypic plasticity in crop adaptation to water stress such as drought as well as soil moisture fluctuation stress, and. We conducted a series of experiments to evaluate the functional roles of root plasticity by using various accessions/populations such as OryzaSNP germplasm set, chromosome segment substitution lines (CSSL) derived from Nipponbare and Kasalath cross, IR 64 INLs and a few promising genotypes for stress tolerance including NERICA (New Rice for Africa that is an interspecific cross between Oryza sativa and Oryza glaberrima). We used the rootbox-pinboard method, slant tube method, experimental bed installed with line source sprinkler system that can create gradient in drought stress intensities, and sloping bed that can create increasing rooting depths under field conditions for phenotyping root traits. These results consistently showed that in addition to deep roots, the plastic development of the root system is a key trait for plant adaptation to water stress. We also found that the plasticity in development of the entire root system is important in response to progressive drought, while that in lateral root development and aerenchyma formation is important in response to transient drought and O2 deficient conditions. We quantitatively showed the contributions of root plasticity to dry matter production through enhanced water uptake under water stress.

本研究的目的是研究植物随着环境条件的变化而改变其发育的能力的功能作用，这被称为作物适应水分胁迫（如干旱和土壤水分波动胁迫）的表型可塑性。本研究利用水稻SNP种质资源、日本晴和Kasalath杂交的染色体片段代换系（CSSL）、IR 64 INLs以及包括非洲新稻（NERICA）在内的几种具有抗逆性的基因型，对水稻根可塑性的功能作用进行了一系列的研究。在田间条件下，采用根箱-插接板法、倾斜管法、安装线源喷灌系统的试验床和增加根系深度的倾斜床对根系性状进行表型分析。这些结果一致表明，除了深根，根系的可塑性发育是植物适应水分胁迫的关键性状。我们还发现，整个根系的发展的可塑性是重要的，在响应进行性干旱，而在侧根的发展和通气组织的形成是重要的，在响应短暂的干旱和O2不足的条件。我们定量地显示了水分胁迫下根系可塑性通过增强水分吸收对干物质生产的贡献。

项目成果

期刊论文数量（0）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Functional Roles of Plastic Root System Development in Dry Matter Production under Water Stress in Rice

水分胁迫下水稻根系发育在干物质生产中的功能作用

DOI：
发表时间：
2011
期刊：
影响因子：
0
作者：
平塚伸;堀川晃宏;名田和義;Akira Yamauchi 他15名
通讯作者：
Akira Yamauchi 他15名

Root Phenotypic Plasticity as the Key Mechanism for Adaptation to Various Types of Water Stresses in Rice

根系表型可塑性是水稻适应各类水分胁迫的关键机制

DOI：
发表时间：
2011
期刊：
影响因子：
0
作者：
平塚伸;堀川晃宏;名田和義;Akira Yamauchi 他15名;渡辺貴史;富　研一・坂口絵理・上田早紀・林　孝洋;平塚伸・堀川晃宏・名田和義;Akira Yamauchi 他15名
通讯作者：
Akira Yamauchi 他15名

Roles of root plasticity in plant adaptation to soil moisture fluctuation in rice (IR64) NILs

水稻根系可塑性在植物适应土壤水分波动中的作用 (IR64) NIL

DOI：
发表时间：
2010
期刊：
影响因子：
0
作者：
Mana Kano-Nakata;R.P. Veeresh Gowda;Amelia Henry;Yoshiaki Inukai;Nobuya Kobayashi;Rachid Serraj and Akira Yamauchi
通讯作者：
Rachid Serraj and Akira Yamauchi

浸透ポテンシャルとNa/K比に着目したイネの塩ストレス反応の品種間差異

水稻盐胁迫反应的品种差异，重点关注渗透势和钠钾比