American type culture collection. Catalogue of cultures, 1928.

Mode of access: Internet.

American type culture collection. Catalogue of cultures, 1927.

Mode of access: Internet.

Annual report of the Division of Life Sciences /

Mode of access: Internet.

enod40 induces dedifferentiation and division of root cortical cells in legumes

Under nitrogen-limiting conditions Rhizobium meliloti can establish symbiosis with Medicago plants to form nitrogen-fixing root nodules. Nodule organogenesis starts with the dedifferentiation and division of root cortical cells. In these cells the early nodulin gene enod40, which encodes an unusually small peptide (12 or 13 amino acids), is induced from the beginning of this process. Herein we show that enod40 expression evokes root nodule initiation. (i) Nitrogen-deprived transgenic Medicago truncatula plants overexpressing enod40 exhibit extensive cortical cell division in their roots in the absence of Rhizobium. (ii) Bombardment of Medicago roots with an enod40-expressing DNA cassette induces dedifferentiation and division of cortical cells and the expression of another early nodulin gene, Msenod12A. Moreover, transient expression of either the enod40 region spanning the oligopeptide sequence or only the downstream region without this sequence induces these responses. Our results suggest that the cell-specific growth response elicited by enod40 is involved in the initiation of root nodule organogenesis.

QDROs, the Division of Pensions through Qualified Domestic Relations Orders.

Shipping list no.: 97-0328-P.

Analyses of airborne particulates and human urine by inductively coupled plasma-atomic emission spectrometry /

October 1978.

Facts about the U.S. Antarctic Program.

"July 1988."

Drug dependence

Each number also called Experimental issue

Criminal commitments and dangerous mental patients : legal issues of confinement, treatment, and release /

Includes bibliographical references.

Predicting adolescent drug abuse : a review of issues, methods and correlates /

Mode of access: Internet.

Our future selves : a research plan toward understanding aging, of the Department of Health, Education and Welfare /

Previously published in 1977 (DHEW publication ; no. (NIH) 77-1096).

The geography of Europe.

Mode of access: Internet.

Patterns of living and housing of middle-aged and older people : proceedings of Research conference on patterns of living and housing of the middle-aged and older people, March 21-24, 1965, Washington, D.C.

"The conference was initiated by the Housing and Home Finance Agency."

Terrestrial microcosms and environmental chemistry : the proceedings of two colloquia, held June 13-14, 1977 at Oregon State University, Corvallis, Oregon, as a part of the Symposium on Terrestrial Microcosms and Environmental Chemistry /

Mode of access: Internet.