Temperature sensing by primary roots of maize

Zea mays L. seedlings, grown on agar plates at 26 degrees C, reoriented the original vertical direction of their primary root when exposed to a thermal gradient applied perpendicular to the gravity vector. The magnitude and direction of curvature can not be explained simply by either a temperature o...

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Bibliographic Details
Published in:Plant physiology (Bethesda) 1990-09, Vol.94 (1), p.367-369
Main Authors: Fortin, M.C.A. (Agriculture Canada Research Station, Harrow, Ontario, Canada), Poff, K.L
Format: Article
Language:English
Subjects:
551000 - Physiological Systems
Agronomy. Soil science and plant productions
BASIC BIOLOGICAL SCIENCES
Biological and medical sciences
CEREALS
Communications
CONTROL
Corn
Curvature
Fundamental and applied biological sciences. Psychology
GRASS
Gravitation
Gravitropism - physiology
GROWTH
HUMIDITY
Hydrotropism
INDICE DE CRECIMIENTO
Life Sciences (General)
LILIOPSIDA
MAGNOLIOPHYTA
MAIZE
Physical agents
PLANT GROWTH
Plant physiology and development
Plant roots
Plant Roots - growth & development
Plant Roots - physiology
PLANTS
RACINE
RAICES
Root growth
ROOTS
SEEDLINGS
Space life sciences
TAUX DE CROISSANCE
TEMPERATURA
TEMPERATURE
TEMPERATURE CONTROL
TEMPERATURE EFFECTS
Temperature gradients
THERMOREGULATION
Tropism - physiology
TROPISME
TROPISMO
Vegetative apparatus, growth and morphogenesis. Senescence
ZEA MAYS
Zea mays - growth & development
Zea mays - physiology
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Description
Summary:Zea mays L. seedlings, grown on agar plates at 26 degrees C, reoriented the original vertical direction of their primary root when exposed to a thermal gradient applied perpendicular to the gravity vector. The magnitude and direction of curvature can not be explained simply by either a temperature or a humidity effect on root elongation. It is concluded that primary roots of maize sense temperature gradients in addition to sensing the gravitational force
ISSN:0032-0889
1532-2548
DOI:10.1104/pp.94.1.367