RUI: Growth Equations for Sporiangiophores of Phycomyces:   Transpiration
{'Code': '08090100', 'Directorate': {'Abbreviation': 'BIO', 'LongName': 'Direct For Biological Sciences'}, 'Division': {'Abbreviation': 'IOS', 'LongName': 'Division Of Integrative Organismal Systems'}}
{'SignBlockName': 'Judith Plesset', 'PO_EMAI': None, 'PO_PHON': None}
The sensory system of the sporangiophores of Phycomyces                     blakesleeanus has been of interest for many years. The                          sporangiophores are large single cells that detect and respond to               several different environmental stimuli with either a symmetric                 or an asymmetric change in elongational growth rate.  Thus,                     fundamental to a detailed understanding of the sensory system is                an in-depth quantitative understanding of the regulation of the                 sporangiophore's growth rate.  The long-term objective of the                   proposed research is to establish quantitative relationships                    (Growth Equations) for sporangiophore growth rate and water                     transport rate, for all stages of sporangiophore development.                       Previously, it was demonstrated that the sporangiophore may                 transpire up to 85% of its water uptake, thus transpiration is an               important process which must be included in the quantitative                    relationships.  The immediate objective of this project is to                   extend the Growth Equations to include transpiration, and to                    study the transpiration process as a function of development and                environmental conditions.  The results obtained may provide new                 insight into the transpiration process, water transport, plant                  cell growth and growth regulation, plant cell development, and                  sensory transduction.                                                           %%%                                                                                 Dr. Ortega proposes to experimentally determine the magnitude               of, and changes in, biophysical and biochemical properties of the               giant single cells of the fungus Phycomyces in order to establish               a quantitative mathematical model for the growth rate and                       behavior of these cells.  These large cells detect and respond to               several different environmental stimuli such as light, with                     either a symmetric or asymmetric change in elongational growth                  rate and have thus been used as a model system for elucidating                  the sensory transduction process. He here will determine the                    effects of transpiration (water retention or loss) on growth                    rates and incorporate this information into his mathematical                    models. The results will have a wider significance in                           understanding the mechanics of cell wall growth and water                       transport in other fungi and also in green plants.
{'FirstName': 'Joseph K.', 'LastName': 'Ortega', 'PI_MID_INIT': 'E', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Joseph K. E Ortega', 'EmailAddress': 'joseph.ortega@ucdenver.edu', 'NSF_ID': '000418227', 'StartDate': '06/01/1988', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'University of Colorado at Denver-Downtown Campus', 'CityName': 'DENVER', 'ZipCode': '802042055', 'PhoneNumber': '3037240090', 'StreetAddress': '1380 LAWRENCE ST STE 300', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'Colorado', 'StateCode': 'CO', 'CONGRESSDISTRICT': '01', 'CONGRESS_DISTRICT_ORG': 'CO01', 'ORG_UEI_NUM': 'M6CXZ6GSJW84', 'ORG_LGL_BUS_NAME': 'UNIVERSITY OF COLORADO AT DENVER', 'ORG_PRNT_UEI_NUM': None}
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[{'Code': '111100', 'Text': 'DEVELOPMENTAL SYSTEMS CLUSTER'}, {'Code': '912000', 'Text': 'CROSS-DIRECTORATE PROGRAMS'}]
{'url': 'https://www.nsf.gov/awardsearch/download?DownloadFileName=1988&All=true', 'xml': '8801717.xml'}