Evolutionary Patterns in the Auxin Metabolism of Green Plants

Autor:	A. Ester Sztein, Jerry D. Cohen, Todd J. Cooke
Rok vydání:	2000
Předmět:	chemistry.chemical_classification biology Phaeoceros laevis Tryptophan food and beverages Plant Science Metabolism biology.organism_classification Moss Pteridophyte Hornwort chemistry Selaginella kraussiana Auxin Botany heterocyclic compounds Ecology Evolution Behavior and Systematics
Zdroj:	International Journal of Plant Sciences. 161:849-859
ISSN:	1537-5315 1058-5893
Popis:	The metabolism, transport, and action of the hormone auxin (indole‐3‐acetic acid; IAA) is thought to regulate the morphological processes responsible for generating the characteristic body plans of green plants. One objective of this study was to determine the general class of the IAA biosynthetic pathway operating in the vegetative apices of the liverwort Pallavicinia lyellii, the moss Polytrichum ohioense, and the pteridophyte Selaginella kraussiana. A new methodology, which is based on the relative ability of unlabeled tryptophan to affect the conversion of 14C‐anthranilate into labeled IAA, established that the predominant IAA biosynthetic pathway(s) in all these plants are tryptophan‐independent pathways. A second objective was to characterize auxin metabolism in the charophycean green alga Nitella sp. and the hornwort Phaeoceros laevis. Gas chromatography–mass spectrometry was used to measure the levels of free IAA and IAA conjugates, and thin‐layer chromatography was used to determine the nature of...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::cf3d76ec1857de685134b43851345bf3 https://doi.org/10.1086/317566 Zobrazit plný text záznamu Plný text ve formátu PDF