Involvement of Calcium and Calmodulin in Protein and Amino Acid Metabolism in Rice Roots under Anoxia : ENVIRONMENTAL AND STRESS RESPONSES :

• AURISANO,Nicoletta

  Istitute Biosintesi Vegetali, C.N.R.

• BERTANI,Alcide

  Istitute Biosintesi Vegetali, C.N.R.

• REGGIANI,Remo

  Istitute Biosintesi Vegetali, C.N.R.

抄録

The pretreatment of rice roots for 1 h in aerobic conditions with the Ca^<2+^gt;-channel blockers ruthenium red (RR) and verapamil and the calmodulin (CaM) antagonists N-(6-aminohexyl)-5-chloro-1-naphtylenesulfonamide (W-7) and trifluoperazine, induced during 3 h of anoxia: (i) inhibition of amino acid and γ-aminobutyric acid (Gaba) accumulation; (ii) a decline in the protein con-tent; (iii) a release of amino acids and K^+ into the growth media. The calcium ionophore A23187 reversed these effects in RR-treated roots. Moreover, the aerobic pretreatment of rice roots with A23187 alone or CaCl_2 increased the accumulation of amino acids and Gaba. These data indicate that the Ca^<2+^gt;/CaM complex is involved in the transduction of an anaerobic signal by inhibiting proteolysis and solute release, and activating the Ca^<2+^gt;/CaM-dependent glutamate decarboxylase.

収録刊行物

• Plant and cell physiology

  Plant and cell physiology 36 (8), 1525-1529,

  Japanese Society of Plant Physiologists

キーワード

• y-Aminobutyrate
• Anoxia
• Calcium
• Calmodulin
• Oryza sativa
• Root

詳細情報

• CRID: 1540291245383963136
• NII論文ID: 110003720759
• NII書誌ID: AA0077511X
• Web Site: http://dl.ndl.go.jp/info:ndljp/pid/10771758
• 本文言語コード: en
• データソース種別:
  • NDL-Digital
  • CiNii Articles