グルタミン酸とカルシウムシグナルを介した傷害応答

• 豊田 正嗣

  埼玉大学大学院理工学研究科

書誌事項

タイトル別名

• Plant wound responses via glutamate and calcium signaling
• グルタミンサン ト カルシウムシグナル オ カイシタ ショウガイ オウトウ

抄録

Unlike animals, plants do not possess the central nervous system, but they can immediately sense local environmental stresses, such as mechanical wounding and herbivore attack, propagate this information throughout the plant body and activate systemic defence responses in distant organs.　However, the molecular machinery underlying such rapid sensory and systemic signal transduction is poorly understood.　Using genetically-encoded calcium ion （Ca²⁺） and glutamic acid （Glu） indicators and a highly-sensitive wide-field fluorescence microscope, we have visualized the plant-wide spatial and temporal dynamics of cytosolic Ca²⁺ and apoplastic Glu levels in response to wounding in Arabidopsis leaves.　Here, we show that glutamate is a wound signal in plants that is leaked to the apoplastic region from damaged cells/tissues.　The GLUTAMATE RECEPTOR LIKE （GLR） family of Ca²⁺-permeable channels act as sensors that convert this damage-associated signal into an increase in cytosolic Ca²⁺ concentration.　This Ca²⁺ signal propagates throughout the entire plant via the plant-specific tissue/structure, phloem and plasmodesmata, and preemptively activates resistance responses in the distant undamaged organs.

収録刊行物

• 植物の生長調節

  植物の生長調節 53 (2), 146-151, 2018

  一般社団法人 植物化学調節学会

詳細情報

• CRID: 1390845713035871104
• NII論文ID: 130007553700
• NII書誌ID: AA11550064
• DOI: 10.18978/jscrp.53.2_146
• ISSN: 21896305
• ISSN: 13465406
• NDL書誌ID: 029426246
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I029426246
• 本文言語コード: ja
• データソース種別:
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  • NDL
  • CiNii Articles
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