Proline Oxidase and Water Stress-induced Proline Accumulation in Spinach Leaves

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Proline Oxidase and Water Stress-induced Proline Accumulation in Spinach Leaves.

Spinach (Spinacia oleracea L.) leaf discs accumulated free proline when exposed to polyethylene glycol solutions of water potential less than -10 bars. At -20 bars, the accumulation was 11 micromoles per gram original fresh weight in a 24-hour period.When the leaf organelles were separated on a sucrose gradient, a proline oxidase was detected in the mitochondrial fraction. Isolated mitochondria...

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Mobilization of N from leaves of barley (Hordeum vulgare L.) during water stress, and the role of proline as a mobilized species, were examined in plants at the three-leaf stage. The plants responded to water stress by withdrawing about 25% of the total reduced N from the leaf blades via phloem translocation. Most of this N loss was during the first 2 days while translocation of (14)C-photosynt...

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Salt Stress Encourages Proline Accumulation by Regulating Proline Biosynthesis and Degradation in Jerusalem Artichoke Plantlets

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ژورنال

عنوان ژورنال: Plant Physiology

سال: 1979

ISSN: 0032-0889,1532-2548

DOI: 10.1104/pp.63.3.531