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      Glutamate triggers long-distance, calcium-based plant defense signaling

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          Abstract

          Animals require rapid, long-range molecular signaling networks to integrate sensing and response throughout their bodies. The amino acid glutamate acts as an excitatory neurotransmitter in the vertebrate central nervous system, facilitating long-range information exchange via activation of glutamate receptor channels. Similarly, plants sense local signals, such as herbivore attack, and transmit this information throughout the plant body to rapidly activate defense responses in undamaged parts. Here we show that glutamate is a wound signal in plants. Ion channels of the GLUTAMATE RECEPTOR–LIKE family act as sensors that convert this signal into an increase in intracellular calcium ion concentration that propagates to distant organs, where defense responses are then induced.

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          Author and article information

          Journal
          Science
          Science
          American Association for the Advancement of Science (AAAS)
          0036-8075
          1095-9203
          September 13 2018
          September 14 2018
          September 13 2018
          September 14 2018
          : 361
          : 6407
          : 1112-1115
          Article
          10.1126/science.aat7744
          30213912
          f4233cd0-25ee-4fb8-b013-566146f8be3a
          © 2018

          http://www.sciencemag.org/about/science-licenses-journal-article-reuse

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