Analysis of improvement characteristics of tropical saline soil and vegetation using salt tolerant weeds

耐盐杂草改良热带盐渍土及植被特性分析

• 批准号: 15405019
• 负责人: USUI Kenji
• 金额: $ 6.91万
• 依托单位: UNIVERSITY OF TSUKUBA
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15405019/
• 关键词: saline soil; salt tolerance; weed; remediation; oxidative stress; antioxidative enzymes; osmotic adjustment; ammonium acumulation; 塩類濃含量; 塩類濃度; 組織培養; 先駆植物

The study was conducted to obtain the basic information about improvement characteristics of tropical saline soil and vegetation using salt tolerant weeds. The results obtained under field conditions in Thailand and in laboratory conditions in the study are summarized as follows.1.Soil moisture content and Na accumulation were much less in the weed, such as Digitaria agegypticum, Chloris barbarta, and Panicum repens, growing fields than the weed-free field in salt-affected soil in Thailand.2.The improving effects was greater in the top soil layer than the deeper soil layer.3.There was a good correlation between less Na accumulation and higher soil moisture content.4.Among weed species, the improving effect was different depending on each biomass.5.The high antioxidative activity and the ammonium assimilation activity were important factors in the tolerant mechanisms to salt stress but these were different among plant species.6.In addition to these factors, arginine, glutamine and polyamies were partially contributed to salt stress tolerant mechanism.It is concluded as follows.1.Salt-tolerant weed species are suitable for improving saline soil2.Improving effect of living weed on saline soil depends on the biomass induced by each species specificity.3.Salt tolerant mechanism is different among plant species, but the metabolism regarding ammonium and the enzymes related to oxidation process are main factors.

本研究旨在获得利用耐盐杂草改良热带盐碱地和植被特性的基本信息。在泰国田间条件下和室内条件下得到的结果如下：1.在泰国盐碱地种植的杂草，如马唐、绿竹叶和马唐，其土壤水分和Na的积累量远低于无杂草田。2.土壤表层的改善作用大于深层。3.土壤水分含量高与土壤Na积累量少有很好的相关性。4.在杂草种类中，5.植物的高抗氧化活性和氨同化活性是其耐盐机制中的重要因素，但不同植物的耐盐机制不同。6.除上述因素外，精氨酸、谷氨酰胺和多胺也部分参与了盐胁迫的耐盐机制。结论如下：1.耐盐杂草适合改良盐碱地。2.盐生杂草对盐碱地的改良效果取决于不同物种诱导的生物量。3.植物的耐盐机制不同，但氨代谢和与氧化过程有关的酶是主要因素。

项目成果

T.T.H.Nguyen, K.Kobayashi, I.S.Shim, K.Usui: "Accumulation of some nitrogen compounds in response to salt stress and their relationship with salt tolerance in rice (Oryza sativa L.) seedlings"Plant Growth Regulation. 41・2. 159-164 (2003)

T.T.H.Nguyen、K.Kobayashi、I.S.Shim、K.Usui：“水稻（Oryza sativa L.）幼苗响应盐胁迫的一些氮化合物的积累及其与耐盐性的关系”植物生长调节41・2。 -164 (2003)

庄司知敬, 小林勝一郎, 沈利星: "タイ国の塩類土壌に生育するChloris barbataおよびDactylotenium aegyptiumの耐塩性"雑草研究. 48(別). 218-219 (2003)

Tomotaka Shoji、Katsuichiro Kobayashi、Lisei Shen：“泰国盐渍土中生长的半枝莲和埃及指藻的耐盐性”杂草研究 218-219（单独）。

Effect of difference in nitrogen media on salt-stress response and contents of nitrogen compounds in rice seedlings

不同施氮介质对水稻幼苗盐胁迫响应及氮化合物含量的影响

• 发表时间: 2004
• 期刊: Soil Science and Plant Nutrition 50・1
• 作者: A.Yamamoto;I.S.Shim;S.Fujiwara;T.Yoneyama;K.Usui
• 通讯作者: K.Usui

A hydroponic rice seedling culture model system for investigating proteome of salt stress in rice leaf

• DOI: 10.1002/elps.200500334
• 发表时间: 2005-12-01
• 期刊: ELECTROPHORESIS
• 影响因子: 2.9
• 作者: Kim, DW;Rakwal, R;Usui, K
• 通讯作者: Usui, K

I.S.Shim, Y.Momose, A.Yamamoto, D.W.Kim, K.Usui: "Inhibition of catalase activity by oxidative stress and its relation on salicylic acid accumulation in plants"Plant Growth regulation. 39・3. 285-292 (2003)

I.S.Shim、Y.Momose、A.Yamamoto、D.W.Kim、K.Usui：“氧化应激对过氧化氢酶活性的抑制及其与植物中水杨酸积累的关系”39・3（2003）。