Newly Discovered Intermediates in the Chlorophyll a Biosynthetic Pathway

Several new intermediates in chlorophyll a biosynthesis were detected in higher plants and chemically identified. The newly discovered pigments are divinyl protochlorophyllide, divinyl protochlorophyllide ester, divinyl chlorophyllide a, divinyl chlorophyll a and monovinyl Mg-protoporphyrin-6-ester. Well-established chemical derivatization techniques coupled to absorption and fluorescence spectroscopy were used to identify the pigments. The spectra of the derivatized compounds exhibited the expected spectral shifts and were virtually identical to those of the appropriate standards. It has been proposed that these new pigments are intermediates in a four-branched chlorophyll a biosynthetic pathway (Rebeiz et al., 1981, In: Photosynthesis Vol. 5, Edited by Akoyunoglou, G., Int. Sci. Services. Balaban, Israel, pp. 197-212).

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Botany

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2015

Author dc:creator

• Belanger, Faith Christine

• Biology, Plant Physiology

Language dc:language

eng

Identifier

(UMI)AAI8302803

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/77653