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Heterotrimeric G Protein-Regulated Ca²⁺ Influx and PIN2 Asymmetric Distribution Are Involved in Arabidopsis thaliana Roots' Avoidance Response to Extracellular ATP.

ABSTRACT: Extracellular ATP (eATP) has been reported to be involved in plant growth as a primary messenger in the apoplast. Here, roots of Arabidopsis thaliana seedlings growing in jointed medium bent upon contact with ATP-containing medium to keep away from eATP, showing a marked avoidance response. Roots responded similarly to ADP and bz-ATP but did not respond to AMP and GTP. The eATP avoidance response was reduced in loss-of-function mutants of heterotrimeric G protein α subunit (Gα) (gpa1-1 and gpa1-2) and enhanced in Gα-over-expression (OE) lines (wGα and cGα). Ethylenebis(oxyethylenenitrilo) tetraacetic acid (EGTA) and Gd³⁺ remarkably suppressed eATP-induced root bending. ATP-stimulated Ca²⁺ influx was impaired in Gα null mutants and in

SUBMITTER: Zhu R

PROVIDER: S-EPMC5585194 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature

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Heterotrimeric G Protein-Regulated Ca²⁺ Influx and PIN2 Asymmetric Distribution Are Involved in Arabidopsis thaliana Roots' Avoidance Response to Extracellular ATP.

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Dataset Information

Heterotrimeric G Protein-Regulated Ca2+ Influx and PIN2 Asymmetric Distribution Are Involved in Arabidopsis thaliana Roots' Avoidance Response to Extracellular ATP.

OmicsDI is part of the ELIXIR infrastructure

Tweets

Heterotrimeric G Protein-Regulated Ca²⁺ Influx and PIN2 Asymmetric Distribution Are Involved in Arabidopsis thaliana Roots' Avoidance Response to Extracellular ATP.