Synthesis and degradation of a 28-kDa pod storage protein in French bean (Phaseolus vulgaris) plants

Pod storage protein (PSP) accumulated in developing pods of French bean (Phaseolus vulgaris L.) plants, and increasing the PSP mRNA level by pod removal resulted in the enhancement of PSP accumulation in pods that formed later. Pod storage protein was detected in flowers, young leaves and young stem...

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Bibliographic Details
Published in:Planta 1999-11, Vol.210 (1), p.72-79
Main Authors: Zhong, P.Y, Yamauchi, D, Okamoto, T, Okabe, T, Minamikawa, T
Format: Article
Language:English
Subjects:
Agronomy. Soil science and plant productions
Amino acids
Biological and medical sciences
Cotyledons
Economic plant physiology
Flowers
Fundamental and applied biological sciences. Psychology
gene expression
histochemistry
internodes
jasmonic acid
Leaves
mechanical damage
Messenger RNA
Metabolism
molecular weight
Nutrition. Photosynthesis. Respiration. Metabolism
Phaseolus vulgaris
Plant physiology and development
plant proteins
Plants
pods
protein degradation
protein synthesis
Reserves and secretions. Pigments. Phytochromes
RNA
Seeds
senescence
Soybeans
stems
Storage and secretion, pigments, phytochrome
Storage proteins
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Summary:Pod storage protein (PSP) accumulated in developing pods of French bean (Phaseolus vulgaris L.) plants, and increasing the PSP mRNA level by pod removal resulted in the enhancement of PSP accumulation in pods that formed later. Pod storage protein was detected in flowers, young leaves and young stem internodes in addition to pods. Accumulation of PSP and its mRNA was induced by sink-removal in an organ-specific manner. In addition, wounding induced PSP accumulation systemically in leaves. Methyl jasmonate did not induce PSP synthesis but enhanced the synthesis that was induced by wounding. In senescing pods, PSP was degraded, and degradation products with molecular masses of 20 and 17 kDa were detected in the pods. The amount of 20-kDa degradation product was greater than that of the 17 kDa product.
ISSN:0032-0935
1432-2048
DOI:10.1007/s004250050655