Does Aluminum Inhibit Pollen Germination via Extracellular Calmodulin? | Zendy

L. G. | Zendy; Q. S. Fan | Zendy; Zheng Yu | Zendy; Hongyuan Zhou | Zendy; Fusuo Zhang | Zendy; Daye Sun | Zendy

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Does Aluminum Inhibit Pollen Germination via Extracellular Calmodulin?

Author(s) -

L. G.,

Q. S. Fan,

Zheng Yu,

Hongyuan Zhou,

Fusuo Zhang,

Daye Sun

Publication year - 2000

Publication title -

plant and cell physiology

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 1.975

H-Index - 152

eISSN - 1471-9053

pISSN - 0032-0781

DOI - 10.1093/pcp/41.3.372

Subject(s) - pollen tube , germination , calmodulin , egta , pollen , elongation , extracellular , calcium , chemistry , antiserum , botany , citric acid , biophysics , chelation , biochemistry , biology , antigen , materials science , immunology , pollination , organic chemistry , ultimate tensile strength , metallurgy

The effect of aluminum (Al) on pollen germination and its mechanism of action were investigated. Pollen germination and pollen tube elongation were inhibited by Al at pH 4.5. This inhibitory effect was reversed by the addition of purified calmodulin (CaM), whereas neither the calcium binding-protein S-100 nor Al chelator citric acid at the same concentrations had any obvious effect on Al-inhibited pollen germination. The presence of either the membrane-impermeable CaM inhibitor anti-CaM antiserum or Ca2+ chelator EGTA completely suppressed the effect of exogenous CaM. These results indicate the involvement of extracellular calmodulin in the short-term effects of Al on pollen germination and pollen tube elongation.

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