+ Visit NASA.gov + Contact NASA   + Home Select Search Field * All Report - Patent Number Abstract *Accession Number *NASA Center *Author NameDocument IDKeywordsPublication Date *Title * Find Results With All of the words At least one of the words Enter Search Term  within returned results    Search Tips: Use only the fields with * to search NIX collection. Enclose terms in double quotation marks (") to search for exact phrases, ie: "space shuttle". NOTE: Commas and dashes are removed from search term by search engine. Select Reset Search button to start a new search. See Help for more tips. + Publication Year Selected Navigations: Author > Staves, M. P. [x] Sort results by: NASA Center | Date Added to NTRS | Publication Year There are a total of 11 record(s) matching your query. Sorted by: Date Added To NTRS in Descending order 1 2 Next  The August Krogh principle applies to plants Author(s): Wayne, R.; Staves, M. P. Abstract: The Krogh principle refers to the use of a large number of animals to study the large number of physiological problems, rather than limiting study to a particular organism for all problems. There may be organisms that are ... NASA Center: NASA (non Center Specific) Publication Year: 1996 Added to NTRS: 2006-08-02 Document ID: 20040089781 Detection of gravity-induced polarity of cytoplasmic streaming in Chara Author(s): Staves, M. P.; Wayne, R.; Leopold, A. C. Abstract: Gravity induces a polarity of cytoplasmic streaming in vertically-oriented internodal cells of characean algae. The motive force that powers cytoplasmic streaming is generated at the ectoplasmic/endoplasmic interface. The ... NASA Center: NASA (non Center Specific) Publication Year: 1995 Added to NTRS: 2006-08-02 Document ID: 20040089786 A down-to-earth model of gravisensing Author(s): Wayne, R.; Staves, M. P. Abstract: The statolith hypothesis for gravity sensing is the most accepted model of gravity sensing in plants. However, the lukewarm acceptance of the statolith hypothesis among plant physiologists is most likely due to inertia and ... NASA Center: NASA (non Center Specific) Publication Year: 1997 Added to NTRS: 2006-08-02 Document ID: 20040089482 A down to earth model of gravisensing or Newton's Law of Gravitation from the apple's perspective Author(s): Wayne, R.; Staves, M. P. Abstract: The physiology of gravity perception in plants is examined and a model of gravitational pressure is explained and compared to the statolith model. The gravitational pressure model is based on studies of tension and ... NASA Center: NASA (non Center Specific) Publication Year: 1996 Added to NTRS: 2006-08-02 Document ID: 20040089745 Cytochalasin D does not inhibit gravitropism in roots Author(s): Staves, M. P.; Wayne, R.; Leopold, A. C. Abstract: It is generally thought that sedimenting plastids are responsible for gravity sensing in higher plants. We directly tested the model generated by the current statolith hypothesis that the gravity sensing that leads to ... NASA Center: NASA (non Center Specific) Publication Year: 1997 Added to NTRS: 2006-08-02 Document ID: 20040089313 Gravity-dependent polarity of cytoplasmic streaming in Nitellopsis Author(s): Wayne, R.; Staves, M. P.; Leopold, A. C. Abstract: The internodal cells of the characean alga Nitellopsis obtusa were chosen to investigate the effect of gravity on cytoplasmic streaming. Horizontal cells exhibit streaming with equal velocities in both directions, whereas ... NASA Center: NASA (non Center Specific) Publication Year: 1990 Added to NTRS: 2006-08-02 Document ID: 20040089512 The effect of the external medium on the gravitropic curvature of rice (Oryza sativa, Poaceae) roots Author(s): Staves, M. P.; Wayne, R.; Leopold, A. C. Abstract: The roots of rice seedlings, growing in artificial pond water, exhibit robust gravitropic curvature when placed perpendicular to the vector of gravity. To determine whether the statolith theory (in which intracellular ... NASA Center: NASA (non Center Specific) Publication Year: 1997 Added to NTRS: 2006-08-02 Document ID: 20040089314 The density of the cell sap and endoplasm of Nitellopsis and Chara Author(s): Wayne, R.; Staves, M. P. Abstract: We measured the densities of the cell sap, endoplasm and cell wall of Nitellopsis obtusa and Chara corallina using interference microscopy, refractometry, immersion refractometry, equilibrium sedimentation and chemical ... NASA Center: NASA (non Center Specific) Publication Year: 1991 Added to NTRS: 2006-08-02 Document ID: 20040112130 The contribution of the extracellular matrix to gravisensing in characean cells Author(s): Wayne, R.; Staves, M. P.; Leopold, A. C. Abstract: The cell-extracellular matrix junction, which includes the cell wall and the outer surface of the plasma membrane, may be an essential region for the perception of gravity by the internodal cells of Chara corallina. ... NASA Center: NASA (non Center Specific) Publication Year: 1992 Added to NTRS: 2006-08-02 Document ID: 20050000760 Hydrostatic pressure mimics gravitational pressure in characean cells Author(s): Staves, M. P.; Wayne, R.; Leopold, A. C. Abstract: Hydrostatic pressure applied to one end of a horizontal Chara cell induces a polarity of cytoplasmic streaming, thus mimicking the effect of gravity. A positive hydrostatic pressure induces a more rapid streaming away from ... NASA Center: NASA (non Center Specific) Publication Year: 1992 Added to NTRS: 2006-08-02 Document ID: 20040089505 1 2 Next  + Back to Top + Sponsored by the NASA Scientific and Technical    Information Program + 2004 Vision for Space Exploration + Freedom of Information Act + NASA Web Privacy Policy and Important Notices + NASA Disclaimers, Copyright Notice,    and Terms and Conditions of Use NASA Official: Calvin Mackey Page Curator: NASA Center for AeroSpace Information (help@sti.nasa.gov) Last Updated: July 5, 2007