Nodulation independent of rhizobia Induced by a calcium-activated kinase lacking autoinhibition

Article Abstract:

Specific removal of the autoinhibition domain leads to the autoactivation of the nodulation signaling pathway in the plant, with the resultant induction of nodules and nodulation gene expression in the absence of bacterial elicitation. The fact that a single regulation event is sufficient to induce nodulation highlights the possibility of transferring this process to non legumes.

All Other Miscellaneous Crop Farming, Field crops, except cash grains, not elsewhere classified, Alfalfa, Physiological aspects, Gene expression, Nitrogen, Nitrogen fixation, RNA processing

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Changing sex at the same relative body size

Article Abstract:

Sex change occurs in a variety of animals, including fish, echinoderms, crustaceans, molluscs and polychaete worms. The relative timing of sex change which is surprisingly invariant across all animals is discussed.

Animal genetics, Sex change, Echinodermata, Echinoderms

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Host sanctions and the legume-rhizobium mutualism

Article Abstract:

Soybeans penalize rhizobia that fail to fix nitrogen inside their root nodules is shown. A normally mutualistic rhizobium strain was prevented from cooperating by replacing air with an nitrogen free atmosphere.

Mutualism (Biology)

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