Angiosperm clade with Nfixing bacteria in nodules

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Angiosperm clade with N-fixing bacteria in nodules
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Root nodules in soybean
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Frankia, an actinobacteria, infects roots of CA
lilac, Ceanothus spp.
Photos by R. H. Berg, accessed from http//web.uco
nn.edu/mcbstaff/benson/Frankia/NoduleCytology.htm
Photo by Steve Davis
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Anabena showing heterocyst
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Azolla leaf
Anabena filaments
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Gunnera insignis (Sombrilla de pobre)cyanobacter
ia (Nostoc punctiforma) in the leaf petiole
Photo by G. North
J.of the Royal New Zealand Institute of
Horticulture Vol. 1, No. 2, 1969, pp. 56-59.
http//academic.reed.edu/biology/Nitrogen/Nfix1.ht
ml
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Developing nodule in Medicago root cortical
cells invaded by bacteriaearly symbiosomes formed
Photo by Tad Garrett
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Cross-section through root and nodule
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Infection thread
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Nitrogenase schematic
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Leghemoglobin
http//goldbamboo.com/topic-t4272-a1-6Hemoglobin.h
tml
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Azolla with and without Anabena
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Azolla in rice paddy