Dwarfing Effect of Trees Upon Neighboring Plants

Influence of Discharge of Motoneurons upon Excitation of Neighboring Motoneurons

SOME spinal motoneurons are equipped with recurrent collaterals which arise from the axon near its origin and terminate in association with other neurons of the ventral horn (cf. Cajal, 1909). An impulse that sweeps over the motor axon must also invade its collaterals. Does it then affect the excita-bility of the neurons in association with which the collaterals terminate? Miiller (1835) could ...

Unusual conformational effect exerted by Z-DNA upon its neighboring sequences.

Supercoiled plasmid DNA harboring an insert of (dG-dC)16, a sequence known to form Z-DNA upon negative supercoiling, was reacted with chloroacetaldehyde. Chloroacetaldehyde, like bromoacetaldehyde, was found to be a specific probe for detecting unpaired DNA bases in supercoiled plasmid DNA. Under torsional stress (at bacterial superhelical density), chloroacetaldehyde reacted at multiple discre...

Epidermal stem cells self-renew upon neighboring differentiation

1 Department of Genetics, Yale School of Medicine, New Haven, CT 06510, USA 2 Department of Systems Biology, Harvard Medical School, Boston, MA 02115, USA 3 Universal Biology Institute, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan 4 Departments of Dermatology & Cell Biology, Yale Stem Cell Center, Yale Cancer Center, Yale School of Medicine, New Haven, CT 06510, USA # Equal contrib...

Exudation of Mesotrione from Potato Roots Injures Neighboring Plants

Mesotrione is an effective herbicide for volunteer potato control but is not selective in several crops, including onion and carrot. Studies were conducted in 2006 to evaluate the effectiveness of wiper-applied mesotrione for control of volunteer potato in a potato crop. Surprisingly, nontreated potatoes growing adjacent to mesotrione-treated plants exhibited bleaching symptoms resembling mesot...

Dwarfing of breadfruit ( Artocarpus altilis ) trees : 2 Opportunities and challenges 3 4