EurekaMag.com logo
+ Site Statistics
References:
53,869,633
Abstracts:
29,686,251
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on LinkedInFollow on LinkedIn

+ Translate

The paraveinal mesophyll of soybean glycine max cultivar wye leaves in relation to assimilate transfer and compartmentation 1. ultrastructure and histochemistry during vegetative development



The paraveinal mesophyll of soybean glycine max cultivar wye leaves in relation to assimilate transfer and compartmentation 1. ultrastructure and histochemistry during vegetative development



Planta (Heidelberg) 157(5): 411-421



The paraveinal mesophyll (PVM) is a unique and specialized 1-cell-thick tissue spanning the vascular bundles at the level of the phloem in soybean (G. max (L.) Merr.) leaves. Its position within the leaf dictates that all photosynthate produced in the palisade and spongy mesophyll must pass through this specialized layer enroute to the phloem. Symplastic continuity, via plasmodesmata, exists between the PVM and bundle sheath, palisade parenchyma and spongy mesophyll. During leaf ontogeny, the PVM is the 1st tissue to differentiate and at maturity these cells 6-8 times larger than other mesophyll cells, are highly vacuolate and are interconnected by tubular arms. The PVM undergoes several unique structural and metabolic modifications during leaf development. The PVM cytoplasm, in vegetative plants, is dense, enriched in rough endoplasmic reticulum and dictyosomes, but contains few, small starch-free chloroplasts and few microbodies. Unlike the tonoplast of mesophyll cells, the tonoplast of the PVM is unusually thick and dense-staining. During leaf development, the vacuoles of PVM cells accumulate a glycoprotein derived from the dictyosomes which reacts with the protein staining reagents, mercuric bromophenol blue and sulfaflavine, and is degraded by Pronase. The vacuolar material and tonoplast are also stained by phophotungstic acid, which at low pH is relatively selective for glycoprotein. A unique role of the PVM in the transport and compartmentation of N reserves in soybeans is discussed.

(PDF emailed within 1 workday: $29.90)

Accession: 006731181

Download citation: RISBibTeXText



Related references

The paraveinal mesophyll of soybean leaves in relation to assimilate transfer and compartmentation : I. Ultrastructure and histochemistry during vegetative development. Planta 157(5): 411-421, 1983

The paraveinal mesophyll of soybean glycine max cultivar wye leaves in relation to assimilate transfer and compartmentation 2. structural metabolic and compartmental changes during reproductive growth. Planta (Heidelberg) 157(5): 422-431, 1983

Paraveinal mesophyll of soybean glycine max cultivar wye leaves in relation to assimilate transfer and compartmentation 3 immuno histochemical localization of specific glyco peptides in the vacuole after de podding. 1983

The paraveinal mesophyll of soybean leaves in relation to assimilate transfer and compartmentation : II. Structural, metabolic and compartmental changes during reproductive growth. Planta 157(5): 422-431, 1983

Paraveinal Mesophyll of Soybean Leaves in Relation to Assimilate Transfer and Compartmentation : III. Immunohistochemical Localization of Specific Glycopeptides in the Vacuole after Depodding. Plant Physiology 72(2): 586-589, 1983

Specialized cellular arrangements in legume leaves in relation to assimilate transport and compartmentation: comparison of the paraveinal mesophyll. Planta 159(5): 415-422, 1983

Isolation of mesophyll and paraveinal mesophyll protoplasts from soybean glycine max leaves. Plant Science Letters 36(3): 181-186, 1984

Comparative studies on carbon and nitrogen metabolism between mesophyll and paraveinal mesophyll protoplasts from soybean glycine max leaves. Plant Physiology (Rockville) 80(4 SUPPL): 11, 1986

Temporal and spatial compartmentation of glyco proteins in the paraveinal mesophyll of soybean leaves. Plant Physiology (Rockville) 72(SUPPL 1): 69, 1983

Targeting of the vegetative storage proteins to the vacuole of the paraveinal mesophyll of soybean leaves. Plant Physiology (Rockville) 111(2 SUPPL ): 163, 1996

Observations on the development of the paraveinal mesophyll of soybean leaves. Botanical Gazette 134(3): 232-235, 1973

The soybean paraveinal mesophyll cell: a limiting factor in assimilate transport. Proceedings of the Plant Growth Regulator Working Group: 40, 1980