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. 1981 May;78(5):2981-4.
doi: 10.1073/pnas.78.5.2981.

Apoplastic transport of ions in the motor organ of Samanea

N A Campbell  1 , R L Satter, R C Garber
Affiliations

Apoplastic transport of ions in the motor organ of Samanea

N A Campbell et al. Proc Natl Acad Sci U S A. 1981 May.

Abstract

Turgor-mediated leaf movements of the legume Samanea saman are associated with the migration of K(+) and Cl(-) between opposing sides of the motor organs (pulvini). We have investigated the pathway of this ion migration by localizing K(+) and Cl(-) within the secondary pulvinus at various times during leaf movements. Ion distributions in freeze-dried cryosections of pulvini were determined by scanning electron microscopy/x-ray microanalysis. The results indicate that the apoplast is a major pathway for the migration of K(+) and Cl(-) within the pulvinus.

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