The primary cell wall of a non-graminaceous monocot asparagus

Conference · Tue May 01 04:00:00 EDT 1990 · Plant Physiology, Supplement; (USA)

OSTI ID:5626627

Benbow, L L; Lamport, D T.A. ^[1]

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1. Michigan State Univ., East Lansing (USA)

Angiosperms are generally categorized as either monocot or dicot. This classification scheme understates the differences between graminaceous and non-graminaceous monocots. We aim to utilize the primary cell wall as a tool for study of the relationship between the graminaceous monocots, the non-graminaceous monocots, and the dicots. Pronase digestion of HF-deglycosylated asparagus primary cell wall liberates a peptide whose composition suggests an intermediate relationship between the graminaceous monocot, maize, and the dicots. Amino acid analysis of this peptide indicates an empirical formula containing SerHyp{sub 2}Pro{sub 2} together with isodityrosine. Underhydroxylation of extensin occurs in maize. This evidence supports the close relationship between asparagus (a non-graminaceous monocot) and the graminaceous monocots. On the other hand, the presence of IDT indicates less divergence from the dicot primary cell wall. HPLC analysis corroborates the amino acid analysis data suggesting the presence of IDT. In addition, GCMS analysis will provide sequence data for this peptide and confirm the presence or absence of IDT.

• OSTI ID: 5626627
• Report Number(s): CONF-9007196--
• Conference Information: Journal Name: Plant Physiology, Supplement; (USA) Journal Volume: 93:1
• Country of Publication: United States
• Language: English

Related Subjects

550800* -- Morphology
59 BASIC BIOLOGICAL SCIENCES
AMINO ACIDS
CARBOXYLIC ACIDS
CELL CONSTITUENTS
CELL WALL
CLASSIFICATION
FOOD
HYDROXY ACIDS
LILIOPSIDA
MAGNOLIOPHYTA
MAGNOLIOPSIDA
ORGANIC ACIDS
ORGANIC COMPOUNDS
PEPTIDES
PLANTS
POLYPEPTIDES
PROTEINS
TYROSINE
VEGETABLES