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GrainGenes Reference Report: MGG-207-446

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Reference	MGG-207-446
Title	Isolation and characterization of complementary DNAs coding for leaf-specific thionins closely related to the endosperm-specific hordothionin of barley Hordeum-vulgare L.
Journal	Molecular and General Genetics
Year	1987
Volume	207
Pages	446-454
Author	Bohlmann H Apel K
Type	Article
Language	English
Abstract	In etiolated barley seedlings a highly abundant mRNA encoding a 15,000 Mr polypeptide is present whose concentration rapidly declines upon illumination. The amino acid sequence of the 15,000 Mr polypeptide has been deduced from cDNA sequences and the polypeptide has been identified as a high-molecular-weight thionin precursor. Closely related thionins, most of them highly toxic, have been described previously in several higher plants. In cereals the occurrence of these thionins has been thought to be confined to the seeds. Our present data demonstrate that, in addition to endosperm- specific hordothionin mRNA, a closely related but distinct second group of thionin mRNAs is present in the barley leaf during early seedling development. Since the appearance of the hordothionin mRNA is not controlled by light, two different gene families for thionins exist whose expression seems to be under a different mode of developmental control.
Probe	pHvDA6 [ Show all 6 ]

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