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. 1988 Oct;88(2):401–408. doi: 10.1104/pp.88.2.401

Reduction of Turgor Induces Rapid Changes in Leaf Translatable RNA 1

Felix D Guerrero 1, John E Mullet 1
PMCID: PMC1055589  PMID: 16666316

Abstract

The turgor of pea (Pisum sativum) leaves was reduced by exposing excised pea shoots to a stream of 23°C air for 20 min. Poly(A)+ RNA was isolated from control and wilted shoots, translated in vitro and radiolabeled translation products separated by electrophoresis on two-dimensional (isoelectric focusing-sodium dodecyl sulfate) polyacrylamide gels. This analysis showed that the levels of several poly(A)+ RNAs increased in wilted plants. Most of the poly(A)+ RNAs induced in wilted plants did not accumulate in response to heat shock or exogenously applied ABA even though endogenous ABA levels were found to increase in shoots 30 min after wilting and by 4 h had increased 50-fold (1 versus 0.02 microgram per gram fresh weight). A λgt10 cDNA library was constructed using poly(A)+ RNA from wilted shoots which had been incubated for 4 hours. Differential screening of the library identified four clones corresponding to poly(A)+ RNAs which are induced in wilted shoots.

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Selected References

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