Are monocot C4 plants able to utilize H2S as a sulfur source?

Geerdink, Bart (2018) Are monocot C4 plants able to utilize H2S as a sulfur source? Research Project, Science Education and Communication.

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Abstract

Sulfur assimilation is an essential pathway for the plant, primarily for the metabolism of sulfate providing cysteine for methionine and protein synthesis. It also functions as a source of reduced sulfur for the synthesis of numerous other essential metabolites. The enzymes catalyzing the first two steps of this pathway are confined to bundle sheath cells in several C4 monocot species but are present in all mesophyll cells of C3 species. C3 species have been shown to be able to assimilate H2S as a viable sulfur source. Knowing this difference in the sulfur assimilation pathway we tried to show if a C4 plant is able to utilize H2S as a viable sulfur source. We fumigated Zea mais with 0 or 0.5 μl l−1 H2S and provided the plant with a nutrient solution with or without sulfur. During this treatment we monitored the biomass, amino acid amount, thiols and anions for the plants. The findings show that C4 plants are able to utilize H2S as a viable sulfur source and can even grow on H2S as the sole sulfur source.

Item Type:	Thesis (Research Project)
Supervisor name:	Kok, L.J. de
Degree programme:	Science Education and Communication
Thesis type:	Research Project
Language:	English
Date Deposited:	30 Oct 2018
Last Modified:	02 Nov 2018 11:37
URI:	https://fse.studenttheses.ub.rug.nl/id/eprint/18765

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