Extracellular purine nucleotides appear capable of regulating plant development, defense and stress responses by acting in part as agonists of plasma membrane calcium channels. Factors stimulating ATP release include wounding, osmotic stress and elicitors. Here we show that exogenous abscisic acid and l-glutamate can also cause ATP accumulation around Arabidopsis thaliana roots. Release of ADP from root epidermis would trigger ionotropic receptor-like activity in the plasma membrane, resulting in transient elevation of cytosolic free calcium. Root epidermal protoplasts (expressing aequorin as a cytosolic free calcium reporter) can support an extracellular ADP-induced cytosolic calcium elevation in the presence of an extracellular reductant. This confirms that ADP could elicit calcium-based responses distinct to those of ATP, which have been shown previously to involve production of extracellular reactive oxygen species.
机构:
Univ Nacl Mar del Plata, Fac Ciencias Exactas & Nat, UE CONICET UNMDP, Inst Invest Biol, Mar Del Plata, Buenos Aires, ArgentinaUniv Nacl Mar del Plata, Fac Ciencias Exactas & Nat, UE CONICET UNMDP, Inst Invest Biol, Mar Del Plata, Buenos Aires, Argentina
Cecilia Terrile, Maria
;
Virginia Tonon, Claudia
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Univ Nacl Mar del Plata, Fac Ciencias Exactas & Nat, UE CONICET UNMDP, Inst Invest Biol, Mar Del Plata, Buenos Aires, ArgentinaUniv Nacl Mar del Plata, Fac Ciencias Exactas & Nat, UE CONICET UNMDP, Inst Invest Biol, Mar Del Plata, Buenos Aires, Argentina
Virginia Tonon, Claudia
;
Jose Iglesias, Maria
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h-index: 0
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Univ Nacl Mar del Plata, Fac Ciencias Exactas & Nat, UE CONICET UNMDP, Inst Invest Biol, Mar Del Plata, Buenos Aires, ArgentinaUniv Nacl Mar del Plata, Fac Ciencias Exactas & Nat, UE CONICET UNMDP, Inst Invest Biol, Mar Del Plata, Buenos Aires, Argentina
Jose Iglesias, Maria
;
Lamattina, Lorenzo
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Univ Nacl Mar del Plata, Fac Ciencias Exactas & Nat, UE CONICET UNMDP, Inst Invest Biol, Mar Del Plata, Buenos Aires, ArgentinaUniv Nacl Mar del Plata, Fac Ciencias Exactas & Nat, UE CONICET UNMDP, Inst Invest Biol, Mar Del Plata, Buenos Aires, Argentina
Lamattina, Lorenzo
;
Anahi Casalongue, Claudia
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h-index: 0
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Univ Nacl Mar del Plata, Fac Ciencias Exactas & Nat, UE CONICET UNMDP, Inst Invest Biol, Mar Del Plata, Buenos Aires, ArgentinaUniv Nacl Mar del Plata, Fac Ciencias Exactas & Nat, UE CONICET UNMDP, Inst Invest Biol, Mar Del Plata, Buenos Aires, Argentina
机构:
Univ Nacl Mar del Plata, Fac Ciencias Exactas & Nat, UE CONICET UNMDP, Inst Invest Biol, Mar Del Plata, Buenos Aires, ArgentinaUniv Nacl Mar del Plata, Fac Ciencias Exactas & Nat, UE CONICET UNMDP, Inst Invest Biol, Mar Del Plata, Buenos Aires, Argentina
Cecilia Terrile, Maria
;
Virginia Tonon, Claudia
论文数: 0引用数: 0
h-index: 0
机构:
Univ Nacl Mar del Plata, Fac Ciencias Exactas & Nat, UE CONICET UNMDP, Inst Invest Biol, Mar Del Plata, Buenos Aires, ArgentinaUniv Nacl Mar del Plata, Fac Ciencias Exactas & Nat, UE CONICET UNMDP, Inst Invest Biol, Mar Del Plata, Buenos Aires, Argentina
Virginia Tonon, Claudia
;
Jose Iglesias, Maria
论文数: 0引用数: 0
h-index: 0
机构:
Univ Nacl Mar del Plata, Fac Ciencias Exactas & Nat, UE CONICET UNMDP, Inst Invest Biol, Mar Del Plata, Buenos Aires, ArgentinaUniv Nacl Mar del Plata, Fac Ciencias Exactas & Nat, UE CONICET UNMDP, Inst Invest Biol, Mar Del Plata, Buenos Aires, Argentina
Jose Iglesias, Maria
;
Lamattina, Lorenzo
论文数: 0引用数: 0
h-index: 0
机构:
Univ Nacl Mar del Plata, Fac Ciencias Exactas & Nat, UE CONICET UNMDP, Inst Invest Biol, Mar Del Plata, Buenos Aires, ArgentinaUniv Nacl Mar del Plata, Fac Ciencias Exactas & Nat, UE CONICET UNMDP, Inst Invest Biol, Mar Del Plata, Buenos Aires, Argentina
Lamattina, Lorenzo
;
Anahi Casalongue, Claudia
论文数: 0引用数: 0
h-index: 0
机构:
Univ Nacl Mar del Plata, Fac Ciencias Exactas & Nat, UE CONICET UNMDP, Inst Invest Biol, Mar Del Plata, Buenos Aires, ArgentinaUniv Nacl Mar del Plata, Fac Ciencias Exactas & Nat, UE CONICET UNMDP, Inst Invest Biol, Mar Del Plata, Buenos Aires, Argentina