Premium
EFFECTS OF CARBON DIOXIDE ON THE GROWTH AND MORPHOGENESIS OF MARSILEA
Author(s) -
Bristow J. Michael,
Looi AhSing
Publication year - 1968
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1968.tb07445.x
Subject(s) - biology , carbon dioxide , plant stem , botany , epidermis (zoology) , dry weight , morphogenesis , substrate (aquarium) , horticulture , ecology , anatomy , biochemistry , gene
Increased concentrations of CO 2 in air (1–50%) cause young plants of Marsilea vestita to exhibit many characteristics of the water form when they are grown on a solid substrate under sterile conditions. Thus these plants have longer internodes, shorter petioles, more rectangular‐shaped epidermal cells and fewer stomata on the lower leaf epidermis than controls grown in 0.03% CO 2 . Over a 2‐week period, dry weight increase is considerably greater in 12.5% and 25% CO 2 than in 0.03% CO 2 . Fifty percent CO 2 is inhibitory to growth. CO 2 ‐enriched air has the same morphogenetic effect when supplied in the light or the dark. Possible explanations for this effect are discussed.