Developmental and Functional Morphology of Crop Root System in Relation to Hydraulic Characteristic

作物根系发育及功能形态与水力特性的关系

基本信息

  • 批准号:
    13460008
  • 负责人:
  • 金额:
    $ 7.49万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
  • 财政年份:
    2001
  • 资助国家:
    日本
  • 起止时间:
    2001 至 2002
  • 项目状态:
    已结题

项目摘要

This study aimed to examine several developmental and histological root traits that are closely related with water uptake and conductance of a seminal root system of sorghum seedling. In addition, the site of water entry and water uptake rate were determined by using sulphorhodamine G(SR) as an apoplastic tracer. It was then attempted to establish a hydraulic architecture of the root system based on these information.Results showed that heterorhizy exists in lateral roots traits examined such as branching, elongation and expansion ability, Casparian band, exodermis and endodermis development, xylem dimension and vascular connection to seminal root axis. The lateral roots accounted for approximately two third of both root surface area and total amount of SR accumulated in the root system. The accumulation of SR per unit root surface was different between root types and different portions along the seminal root axis. SR accumulated most on 0-15 cm portion from the tip. Among lateral roots, those emerged 15 cm away from the tip of seminal root axes accumulated SR most densely. These results indicate that this part is most active in water uptake in the root system. However, late metaxylem vessel (LMX) in the seminal root axis was not yet opened at that portion, indicating high axial hydraulic resistance. Furthermore, the accumulation drastically dropped basipetally from that portion on, whereas no clear difference in Casparian strip development and exo/endodermis maturity was detected between 15 cm and 20 cm portion from the tip.These facts suggest that the histological features that were determined in this study may not be the sole major factor to determine the hydraulic conductivity but some other traits like the permeability of cell membrane that is closely related with age and thus portion in a root system may also play important roles.
本研究旨在探讨高粱种子根系的几个发育和组织学特征,这些特征与种子根系的吸水和导水密切相关。此外,还用硫罗丹明G(SR)作为质外体示踪剂测定了水分进入部位和吸水速率。结果表明,在侧根的分枝、伸长和扩展能力、凯氏带、外皮层和内皮层的发育、木质部的大小以及与种子根轴的维管连接等性状上均存在着异质性。侧根约占根系表面积和SR总量的2/3。不同根型和种子根轴沿着不同部位单位根表SR积累量不同。SR在距针尖0-15 cm处积累最多。侧根中,距种子根轴顶端15 cm处的侧根积累SR最多。这些结果表明,这部分是最活跃的根系吸水。然而,在种子根轴的后期后生木质部导管(LMX)尚未开放的部分,表明高轴向水力阻力。而且,从这一部分开始,积累量急剧下降,而凯氏带的发育和exo/结果表明,在离顶端15 ~ 20 cm处,内皮层的成熟度较高,这表明本研究所确定的组织学特征可能不是决定导水率的唯一主要因素,还包括细胞膜透性等其他特征这与年龄密切相关,因此根系中的部分也可能起重要作用。

项目成果

期刊论文数量(66)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Rao,T.P.: "Regulation of rhizosphere acidification by photosynthetic activity in cowpea(Vigna unguiculata L.Walp) seedlings"Annals of Botany. 89. 213-220 (2001)
Rao,T.P.:“豇豆(Vigna unguiculata L.Walp)幼苗光合活性对根际酸化的调节”植物学年鉴。
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    0
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市川 里紗: "ソルガム種子根系における内皮・下皮と導管の成熟程度"日本作物学会記事. 71巻別号2. 214-215 (2002)
Risa Ichikawa:“高粱种子根系中的内皮层、皮下组织和导管的成熟度”,日本作物科学学会文章,第 71 卷,第 2. 214-215 期(2002 年)。
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    0
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Ueda, A.: "Salt-inducible proline transporter in barley roots"Plant and Cell Physiology. 42巻. 1282-1289 (2001)
Ueda, A.:“大麦根中的盐诱导脯氨酸转运蛋白”植物和细胞生理学 42. 1282-1289 (2001)。
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    0
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R.Waditee: "Functional characterization of betaine/proline transporters in betaine-accumulating Mangrove"J.Biol.Chem.. 277巻. 18373-18382 (2002)
R. Waditee:“甜菜碱积累红树林中甜菜碱/脯氨酸转运蛋白的功能特征”J. Biol. Chem.. Vol. 277. 18373-18382 (2002)
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    0
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Ueda,A.: "Analysis of salt-inducible genes in barley roots by differential display"J.Plant Res.. 115. 119-130 (2002)
Ueda,A.:“通过差异显示分析大麦根中的盐诱导基因”J.Plant Res.. 115. 119-130 (2002)
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    0
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YAMAUCHI Akira其他文献

Role of plasticity in lateral root development triggered by mild drought stress in dry matter production using OryzaSNP panel of rice
利用水稻 OryzaSNP 组研究干物质生产中轻度干旱胁迫引发的可塑性在侧根发育中的作用
  • DOI:
  • 发表时间:
    2011
  • 期刊:
  • 影响因子:
    0
  • 作者:
    KAMEOKA Emi;YAMAUCHI Akira
  • 通讯作者:
    YAMAUCHI Akira
都市と"農"の共生がポスト成長時代の都市像
城市与农业共存是后增长时代的城市形象
  • DOI:
  • 发表时间:
    2011
  • 期刊:
  • 影响因子:
    0
  • 作者:
    KAMEOKA Emi;YAMAUCHI Akira;横張真
  • 通讯作者:
    横張真

YAMAUCHI Akira的其他文献

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{{ truncateString('YAMAUCHI Akira', 18)}}的其他基金

Hydraulic architecture of crop root system with special emphasis on heterorhizy
特别强调异根性的作物根系水力结构
  • 批准号:
    26292012
  • 财政年份:
    2014
  • 资助金额:
    $ 7.49万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Possibility of menin as a predictive factor for aromatase inhibitors
menin 作为芳香酶抑制剂预测因素的可能性
  • 批准号:
    24591927
  • 财政年份:
    2012
  • 资助金额:
    $ 7.49万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Interaction of root-traits related QTL with soil stress factors in rainfed lowland and upland rice
旱稻和旱稻根性状相关QTL与土壤胁迫因子的相互作用
  • 批准号:
    22405042
  • 财政年份:
    2010
  • 资助金额:
    $ 7.49万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
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
  • 批准号:
    22380013
  • 财政年份:
    2010
  • 资助金额:
    $ 7.49万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Research on manufacturing of glue for preservation and restoration of cultural property : oxhide and fish glue
文化财产保存修复用胶水的制造研究:牛皮和鱼胶
  • 批准号:
    20300292
  • 财政年份:
    2008
  • 资助金额:
    $ 7.49万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Identification of traits responsible for plant adaptation to soil moisture fluctuation in rice
水稻植物适应土壤水分波动性状的鉴定
  • 批准号:
    19380011
  • 财政年份:
    2007
  • 资助金额:
    $ 7.49万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Physiological and functional root traits that are related to drought tolerance and their genetic bases in crop plants
与作物耐旱性相关的根系生理和功能性状及其遗传基础
  • 批准号:
    16380015
  • 财政年份:
    2004
  • 资助金额:
    $ 7.49万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Survey for genetic resources in tropical rootcrops in relation to drought resistance
与抗旱相关的热带块根作物遗传资源调查
  • 批准号:
    13575032
  • 财政年份:
    2001
  • 资助金额:
    $ 7.49万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Problems of Management Information Management in Social and Organizational Systems.
社会和组织系统中的管理信息管理问题。
  • 批准号:
    11630141
  • 财政年份:
    1999
  • 资助金额:
    $ 7.49万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Developmental responses of crop root system to water stress and its physiological basis
作物根系对水分胁迫的发育响应及其生理基础
  • 批准号:
    11660017
  • 财政年份:
    1999
  • 资助金额:
    $ 7.49万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
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