{"id":418,"date":"2018-11-16T07:48:00","date_gmt":"2018-11-15T22:48:00","guid":{"rendered":"http:\/\/133.242.188.182\/kokusaisyakaizin\/?page_id=418"},"modified":"2021-03-29T10:49:08","modified_gmt":"2021-03-29T01:49:08","slug":"plant-stress-responses","status":"publish","type":"page","link":"https:\/\/www.gels.okayama-u.ac.jp\/kokusaisyakaizin\/research\/department-of-plant-stress-science\/plant-stress-responses","title":{"rendered":"Plant Stress Responses"},"content":{"rendered":"<div class=\"research-box wine\">\n<h1>Research Area : Plant Stress Responses<\/h1>\n<div class=\"wrap\">\n<div class=\"photo clfx\">\n<p><img decoding=\"async\" src=\"http:\/\/www.gels.okayama-u.ac.jp\/kokusaisyakaizin\/wp-content\/uploads\/2021\/03\/Plant-Stress-Responses-01.jpg\" alt=\"\"  class=\"aligncenter\"\/><\/p>\n<ul>\n<li>Prof.<br \/>MA Jian Feng<\/li>\n<\/ul>\n<div class=\"qr\">\n<p><a href=\"http:\/\/www.gels.okayama-u.ac.jp\/en\/intro\/dept\/area\/areas04_pstress_e.html\" target=\"_blank\">&gt;&gt;&gt; website<\/a><\/p>\n<p><a href=\"http:\/\/www.gels.okayama-u.ac.jp\/en\/intro\/dept\/area\/areas04_pstress_e.html\" target=\"_blank\"><img decoding=\"async\" src=\"https:\/\/www.gels.okayama-u.ac.jp\/kokusaisyakaizin\/wp-content\/uploads\/2018\/11\/plant-stress-responses-qr.png\" alt=\"\"  class=\"aligncenter\"\/><\/a><\/p>\n<\/div>\n<\/div>\n<div class=\"text clfx\">\n<h2>Molecular mechanisms of aluminum tolerance in plants<\/h2>\n<div class=\"columns\">\n<div>\n<p>Aluminum (Al) toxicity is a major factor limiting crop production on acid soils.  However, some plant species or accessions have evolved strategies to cope with Al.  Rice is the most Al-tolerant species among small grain cereal crops.  We identified a transcription factor for Al tolerance (ART1) and found that it regulates at least 32 genes implicated in Al tolerance.  On the other hand, barley is the most sensitive cereal to Al toxicity, but there is a large genotypic difference in Al tolerance.  We identified a major Al-tolerance gene in barley, HvAACT1.  Furthermore, we found that high expression of this gene is acquired by a transposon insertion in its promoter.<\/p>\n<\/div>\n<div>\n<img decoding=\"async\" src=\"https:\/\/www.gels.okayama-u.ac.jp\/kokusaisyakaizin\/wp-content\/uploads\/2018\/11\/plant-stress-responses-f01.jpg\" alt=\"\"  class=\"aligncenter\"\/>\n<\/div>\n<\/div>\n<hr>\n<h2>Transport system of mineral elements in plants<\/h2>\n<div class=\"columns\">\n<div>\n<img decoding=\"async\" src=\"https:\/\/www.gels.okayama-u.ac.jp\/kokusaisyakaizin\/wp-content\/uploads\/2018\/11\/plant-stress-responses-f02.jpg\" alt=\"\"  class=\"aligncenter\"\/>\n<\/div>\n<div>\n<p>Mineral elements including essential, beneficial and toxic elements in soil affect both plant growth and human health.  We are working on identification of transporters involved in uptake, root-to-shoot translocation and distribution\/redistribution of these elements in plants.  We have identified a number of transporters for Si, P, Mg, Mn, Zn, Cu, Fe, B, Cd and As.  Especially, we found that rice has developed an efficient uptake system for mineral elements, which is mediated by both influx and efflux transporters polarily localized at the exodermis and endodermis of the roots.  We also identified several transporter genes for accumulation of Cd and As in rice.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"research-box wine\">\n<div class=\"wrap\">\n<div class=\"photo clfx\">\n<p><img decoding=\"async\" src=\"http:\/\/www.gels.okayama-u.ac.jp\/kokusaisyakaizin\/wp-content\/uploads\/2021\/03\/Plant-Stress-Responses-02.jpg\" alt=\"\"  class=\"aligncenter\"\/><\/p>\n<ul>\n<li>Assoc. Prof.<br \/>YAMAJI Naoki<\/li>\n<\/ul>\n<div class=\"qr\">\n<p><a href=\"http:\/\/www.gels.okayama-u.ac.jp\/en\/intro\/dept\/area\/areas04_pstress_e.html\" target=\"_blank\">&gt;&gt;&gt; website<\/a><\/p>\n<p><a href=\"http:\/\/www.gels.okayama-u.ac.jp\/en\/intro\/dept\/area\/areas04_pstress_e.html\" target=\"_blank\"><img decoding=\"async\" src=\"https:\/\/www.gels.okayama-u.ac.jp\/kokusaisyakaizin\/wp-content\/uploads\/2018\/11\/plant-stress-responses-qr.png\" alt=\"\"  class=\"aligncenter\"\/><\/a><\/p>\n<\/div>\n<\/div>\n<div class=\"text clfx\">\n<div class=\"columns\">\n<div>\n<p>Mineral nutrients required for plant growth and development are taken up by the roots from soil solution, and then delivered to different organs and tissues depending on their requirements. In Poaceae, this selective distribution is mainly mediated in the nodes, which have highly developed and fully organized vascular systems. We found that \u201cInter-vascular transfer\u201d of mineral elements from enlarged vascular bundles to diffuse vascular bundles is required for their preferential distribution to developing tissues and reproductive organs.<\/p>\n<\/div>\n<div>\n<img decoding=\"async\" src=\"https:\/\/www.gels.okayama-u.ac.jp\/kokusaisyakaizin\/wp-content\/uploads\/2018\/11\/plant-stress-responses-f03.jpg\" alt=\"\"  class=\"aligncenter\"\/>\n<\/div>\n<\/div>\n<h2>Studies on mineral distribution control systems in plants<\/h2>\n<div class=\"columns\">\n<div>\n<img decoding=\"async\" src=\"https:\/\/www.gels.okayama-u.ac.jp\/kokusaisyakaizin\/wp-content\/uploads\/2018\/11\/plant-stress-responses-f04.jpg\" alt=\"\"  class=\"aligncenter\"\/>\n<\/div>\n<div>\n<p>A number of transporters involved in this inter-vascular transfer processes have been identified mainly in rice. They are localized at the different cell layers and form an efficient machinery in the node. These findings will be applicable to improve productivity, nutritional value and safety of cereal crops. <\/p>\n<\/div>\n<\/div>\n<p>Representative references<br \/>\nYamaji N. et al. Reducing phosphorus accumulation in rice grains with an impaired transporter in the node. Nature 541:92-95. (2017)<br \/>\nYamaji N. and Ma J.F. Node-controlled allocation of mineral elements in Poaceae. Current opinion in plant biology 39:18-24. (2017)<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"research-box wine\">\n<div class=\"wrap\">\n<div class=\"photo clfx\">\n<p><img decoding=\"async\" src=\"http:\/\/www.gels.okayama-u.ac.jp\/kokusaisyakaizin\/wp-content\/uploads\/2021\/03\/Plant-Stress-Responses-03.jpg\" alt=\"\"  class=\"aligncenter\"\/><\/p>\n<ul>\n<li>Assoc. Prof.<br \/>MITANI-UENO Namiki<\/li>\n<\/ul>\n<div class=\"qr\">\n<p><a href=\"http:\/\/www.gels.okayama-u.ac.jp\/en\/intro\/dept\/area\/areas04_pstress_e.html\" target=\"_blank\">&gt;&gt;&gt; website<\/a><\/p>\n<p><a href=\"http:\/\/www.gels.okayama-u.ac.jp\/en\/intro\/dept\/area\/areas04_pstress_e.html\" target=\"_blank\"><img decoding=\"async\" src=\"https:\/\/www.gels.okayama-u.ac.jp\/kokusaisyakaizin\/wp-content\/uploads\/2018\/11\/plant-stress-responses-qr.png\" alt=\"\"  class=\"aligncenter\"\/><\/a><\/p>\n<\/div>\n<\/div>\n<div class=\"text clfx\">\n<h2>Studies on mineral transporter and its regulation mechanisms in plants<\/h2>\n<p>Plants are important for us, having been utilized as indispensable materials for, food, clothing and housing since ancient times. Therefore we couldn\u2019t live without plants. I\u2019m focusing on mineral transporters for healthy and high nutrient-efficient crop production.<\/p>\n<div class=\"columns\">\n<div>\n<h3>&gt;Molecular mechanisms of Si transport<\/h3>\n<p>Silicon (Si) is a beneficial element for plant growth, which can alleviate many stresses by accumulation in their shoots. However, Si content of the plants varies greatly with species, and only those plants that are capable of accumulating the element can receive benefit from it. Rice is one of major Si accumulating plants. I am focusing on the study about molecular mechanisms of Si uptake and accumulation in rice for applying the beneficial effects of this element in many other plants.<\/p>\n<\/div>\n<div>\n<img decoding=\"async\" src=\"https:\/\/www.gels.okayama-u.ac.jp\/kokusaisyakaizin\/wp-content\/uploads\/2018\/11\/plant-stress-responses-f05.jpg\" alt=\"\"  class=\"aligncenter\"\/>\n<\/div>\n<\/div>\n<div class=\"columns\">\n<div>\n<img decoding=\"async\" src=\"https:\/\/www.gels.okayama-u.ac.jp\/kokusaisyakaizin\/wp-content\/uploads\/2018\/11\/plant-stress-responses-f06.jpg\" alt=\"\"  class=\"aligncenter\"\/>\n<\/div>\n<div>\n<h3>&gt;Identification of mineral redistribution transporters<\/h3>\n<p>Plants require 14 mineral elements for their growth. These elements are taken up by the roots, translocated from the roots to shoots, followed by distribution\/redistribution to different organs  A number of transporters for uptake and translocation of mineral elements have been identified, however, most transporters involved in mineral distribution\/redistribution remain to be identified. I am working on mineral redistribution systems in rice for efficient use of mineral elements.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Research Area : Plant Stress Responses Prof.MA Jian Feng &gt;&gt;&gt; website Molecular mechanisms of aluminum tolerance in plants Aluminum (Al) toxic &hellip; <a href=\"https:\/\/www.gels.okayama-u.ac.jp\/kokusaisyakaizin\/research\/department-of-plant-stress-science\/plant-stress-responses\"> read more&#8230;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":125,"menu_order":4,"comment_status":"closed","ping_status":"closed","template":"research.php","meta":{"footnotes":""},"class_list":["post-418","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.gels.okayama-u.ac.jp\/kokusaisyakaizin\/wp-json\/wp\/v2\/pages\/418"}],"collection":[{"href":"https:\/\/www.gels.okayama-u.ac.jp\/kokusaisyakaizin\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.gels.okayama-u.ac.jp\/kokusaisyakaizin\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.gels.okayama-u.ac.jp\/kokusaisyakaizin\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.gels.okayama-u.ac.jp\/kokusaisyakaizin\/wp-json\/wp\/v2\/comments?post=418"}],"version-history":[{"count":11,"href":"https:\/\/www.gels.okayama-u.ac.jp\/kokusaisyakaizin\/wp-json\/wp\/v2\/pages\/418\/revisions"}],"predecessor-version":[{"id":2014,"href":"https:\/\/www.gels.okayama-u.ac.jp\/kokusaisyakaizin\/wp-json\/wp\/v2\/pages\/418\/revisions\/2014"}],"up":[{"embeddable":true,"href":"https:\/\/www.gels.okayama-u.ac.jp\/kokusaisyakaizin\/wp-json\/wp\/v2\/pages\/125"}],"wp:attachment":[{"href":"https:\/\/www.gels.okayama-u.ac.jp\/kokusaisyakaizin\/wp-json\/wp\/v2\/media?parent=418"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}