Betaine deficiency in maize: Metabolic basis and relation to osmotic adjustment

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

OSTI ID:5851275

Rhodes, D ^[1]; Hanson, A D ^[2]; Lerma, C; Bolanos, J

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1. Purdue Univ., West Lafayette, IN (USA)
2. Institut botanique, Montreal, Quebec (Canada)

A single recessive gene causes betaine deficiency in certain maize inbred lines. As betaine may act as a cytosolic osmolyte, deficiency might be expected to reduce osmotic adjustment. Two near-isogenic maize lines differing for betaine, as well as groups of diverse betaine-containing and deficient inbreds, were tested under field water-stress conditions. The betaine-deficient isogenic line, and the group of deficient inbreds as a whole, showed significantly (P<0.05) less osmotic adjustment than their respective betaine-containing counterparts. When leaves from field-grown plants of the isogenic lines were supplied with ({sup 14}C)choline, the betaine-containing line produced ({sup 14}C)betaine whereas the deficient line did not.

• OSTI ID: 5851275
• Report Number(s): CONF-9007196-; CODEN: PPYSA
• Journal Information: Plant Physiology, Supplement; (USA), Vol. 93:1; Conference: Annual meeting of the American Society of Plant Physiologists, Indianapolis, IN (USA), 29 Jul - 2 Aug 1990; ISSN 0079-2241
• Country of Publication: United States
• Language: English

Related Subjects

59 BASIC BIOLOGICAL SCIENCES
BETAINE
NUTRITIONAL DEFICIENCY
CARBON 14 COMPOUNDS
MAIZE
OSMOSIS
TRACER TECHNIQUES
AMINES
AMINO ACIDS
AMMONIUM COMPOUNDS
CARBOXYLIC ACIDS
CEREALS
DIFFUSION
DRUGS
GRAMINEAE
ISOTOPE APPLICATIONS
LABELLED COMPOUNDS
LILIOPSIDA
LIPOTROPIC FACTORS
MAGNOLIOPHYTA
ORGANIC ACIDS
ORGANIC COMPOUNDS
PLANTS
QUATERNARY COMPOUNDS
550201* - Biochemistry- Tracer Techniques