Orchid Mycorrhiza: Vitamin Production and Requirements by the Symbionts

Hijner, J. A.; Arditti, Joseph

doi:10.1002/j.1537-2197.1973.tb07595.x

Cited by 12 publications

(12 citation statements)

References 21 publications

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“…As a result of the conversation, he mailed the notebook to J.A. who interpreted the data and wrote a paper based on them (Hijner and Arditti 1973). Went refused to be listed as a coauthor due to his long-standing policy not to add his name to papers by his students.…”

Section: Who Are the Pioneers?mentioning

confidence: 99%

History of orchid propagation: a mirror of the history of biotechnology

Yam

Arditti

2009

Plant Biotechnol Rep

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114

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Orchid seeds are nearly microscopic in size. Because of that, many fanciful theories were proposed for the origin of orchids. Almost 400 years separate the time when orchid seeds were seen for the first time and the development of a practical asymbiotic method for their germination. The seeds were first observed and drawn during the sixteenth century. Seedlings were first described and illustrated in 1804. The association between orchid and fungi was observed as early as 1824, while the requirement for mycorrhiza for seed germination was established in 1899. An asymbiotic method for orchid seed germination was developed in 1921. After Knudson's media B and C were formulated, orchids growing and hybridization became widespread. Hybrids which early growers may not have even imagined became possible.

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Section: Who Are the Pioneers?mentioning

confidence: 99%

History of orchid propagation: a mirror of the history of biotechnology

Yam

Arditti

2009

Plant Biotechnol Rep

Self Cite

114

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“…was heterotrophic for the thiazole moiety of the thiamin molecule and p-aminobenzoic acid or other substances related to folic acid (Hijner and Arditti, 1973).…”

Section: Introductionmentioning

confidence: 99%

Nutritional Requirements of Orchid Endophytes

Hadley

Ong

1978

New Phytologist

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SUMMARYFour geographically distinct isolates of Tulasnella calospora (Bourdier) Juel exhibited a similar nutritional pattern and utilized a wide range of carbon compounds including cellulose. None would grow on a mineral salts/glucose medium unless undefined materials were present. Growth occurred when a mixture of ten amino acids and ten vitamins was used, and all four isolates were heterotrophic for thiamine and /?-amino benzoic acid. They were also exacting for nitrogen. Growth on ammonium ions was very limited but asparagine, glycine and urea were good nitrogen sources while glutamine, arginine and alanine were less adequate.Isolates of Ceratobasidium cornigerum (Bourd.) Rogers and a Rhizoctonia sp. were selfsufficient for vitamins and grew well on nitrate or other nitrogen sources tested. They were more efficient than Tulasnella calospora isolates in their nitrogen economy.

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“…At least one strain of T. calospora requires yeast extract for growth (Hadley, 1970), whereas R. repens M 32 did not exhibit such a need. However nutritional requirements of orchid fungi should not be taken to indicate systematic relationships since they may vary from strain to strain (Hijner & Arditti, 1973;Mariat, 1948Mariat, , 1951Stephen & Fung, 1971;Vermeulen, 1947).…”

Section: Resultsmentioning

confidence: 99%

“…Some of the nutritional requirements of selected orchid fungi have been determined (Burgeff, 1959;Downie, 1949;Hadley, 1969;Hijner & Arditti, 1973;Hollander, 1932;Mariat, 1951;Stephen & Fung, 1971). In several instances it has been shown that the fungi require vitamins or their precursors, amino acids or combinations of these.…”

Section: Introductionmentioning

confidence: 99%