Colonization of wheat (Triticum vulgare L.) by N2-fixing cyanobacteria: II. An ultrastructural study

Autor:	Peter Rowell, Nigel W. Kerby, Miroslav Gantar
Rok vydání:	1991
Předmět:	Cyanobacteria Nostoc biology Epidermis (botany) Physiology Plant Science Plant cell biology.organism_classification Botany Ultrastructure bacteria Poaceae Hormogonium Bacteria
Zdroj:	New Phytologist. 118:485-492
ISSN:	1469-8137 0028-646X
DOI:	10.1111/j.1469-8137.1991.tb00031.x
Popis:	summary The infrastructure of a novel association between a N2-feeing cyanobacterium, Nastoc sp, isolated from soil, and wheat seedlings grown in liquid culture is described. Cyanobacteria were found either as hormogonia, filaments or aseriate packages. The aseriate packages, which developed from filaments, often formed a thick layer surrounding the root surface. The packages were in intimate contact with adjacent root epidermal cells and could not be removed without damaging the epidermis. Cyanobacteria penetrated both the root epidermis and cortex and formed packages in intercellular spaces. Cyanobacteria] filaments were occasionally found within plant cells that appeared empty. Additionally, cyanobacteria were observed in association with the stem and on the surfaces of leaves. These findings demonstrate the technical feasibility of forming a novel association between a N2-fixing cyanobacterium and a cereal.
Databáze:	OpenAIRE
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