The Genetic Regulation of Phase Change in Maize
{'Code': '08090100', 'Directorate': {'LongName': 'Direct For Biological Sciences'}, 'Division': {'LongName': 'Division Of Integrative Organismal Systems'}}
{'SignBlockName': 'Thomas E. Brady'}
The objective of this project is to characterize genetic control                of the transition, termed "phase change", from juvenile to adult                vegetative growth habit in maize.  This attempt to dissect                      genetic regulation of the temporal gene expression program will                 be accomplished via analysis of mutations (Tp1, Tp2 and Tp3) that               prolong the juvenile growth phase.  The function of these                       mutations will be investigated by study of the autonomy of their                expression, and their effect on maize leaf growth, morphology and               cell lineage.  The phenotypes and genetic interactions of                       putative loss.of.function derivatives of the primary mutations                  will be characterized as an additional approach to definition of                their function.  Information from these studies will be used to                 evaluate growth transition models which involve: 1) overlapping                 juvenile and adult programs; and 2) sequential, mutually                        exclusive juvenile and adult programs.  This study has the                      potential to advance fundamental knowledge of the genetic control               of maize development, and possible pathways of its evolution.
{'FirstName': 'R.', 'LastName': 'Poethig', 'EmailAddress': 'spoethig@mail.sas.upenn.edu', 'StartDate': '03/01/1989', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'University of Pennsylvania', 'CityName': 'Philadelphia', 'ZipCode': '191046205', 'PhoneNumber': '2158987293', 'StreetAddress': 'Research Services', 'CountryName': 'United States', 'StateName': 'Pennsylvania', 'StateCode': 'PA'}
[{'Code': '1111', 'Text': 'DEVELOPMENTAL SYSTEMS CLUSTER'}, {'Code': '9120', 'Text': 'CROSS-DIRECTORATE PROGRAMS'}, {'Code': '9145', 'Text': 'SPECIAL PROGRAMS-RESERVE'}]
{'url': 'https://www.nsf.gov/awardsearch/download?DownloadFileName=1988&All=true', 'xml': '8819218.xml'}