COS 44 - Physiology II

Tuesday, August 8, 2017: 8:00 AM-11:30 AM
D138, Oregon Convention Center
8:00 AM
 Stem drought resistance, but not stomatal closure, is strongly predicted by aridity among American oaks that differ in leaf habits
Beth Fallon, University of Minnesota; Jeannine M. Cavender-Bares, University of Minnesota
8:20 AM
 Hydraulic redistribution as a driver of tree and grass competition versus facilitation in a semiarid savanna
Greg A. Barron-Gafford, University of Arizona; Enrique Sanchez-Cañete, Centro Andaluz de Medio Ambiente; Rebecca L. Minor, University of Arizona; Sean Hendryx, University of Arizona; Esther Lee, University of Illinois at Urbana−Champaign; Leland F. Sutter, University of Arizona; Elizabeth Parra, University of Arizona; Anthony Colella, University of Arizona; Patrick Murphy, University of Arizona; Erik P. Hamerlynck, USDA-ARS; Praveen Kumar, University of Illinois at Urbana−Champaign; Russell L. Scott, United States Department of Agriculture, Agricultural Research Service
8:40 AM
 Unravelling traits, genes and trade-offs in low nutrient stress tolerance of cultivated sunflower (Helianthus annuus)
Andries A. Temme, University of Georgia; Kelly L. Kerr, University of Georgia; Irina Ćalić, University of Georgia; Rishi R. Masalia, University of Georgia; Kaleigh Davis, University of Georgia; John M. Burke, University of Georgia; Lisa A. Donovan, University of Georgia
9:20 AM
 The role of leaf hydraulics and rooting depth in explaining seasonal patterns of gas-exchange and phenology in a semi-arid grassland community
Troy Ocheltree, Colorado State University; Kevin E. Mueller, Cleveland State University; Daniel LeCain, USDA-ARS; Julie A. Kray, USDA-ARS; Dana M. Blumenthal, USDA-ARS
9:40 AM
9:50 AM
 Species that experience a wider range of leaf water potentials have greater plasticity in leaf hydraulic parameters
Daniel M. Johnson, University of Idaho; Z. Carter Berry, University of New Hampshire; Kathryn V. Baker, University of Idaho; Duncan D. Smith, University of Wisconsin-Madison; Katherine A. McCulloh, The University of Wisconsin-Madison; Jean-Christophe Domec, University of Bordeaux
10:10 AM
 Variation in capacitance of small and large diameter roots and stems within poplar tree xylem (Populus trichocarpa)
Alex B. Baer, California State University Bakersfield; R. Brandon Pratt, California State University, Bakersfield; Anna L. Jacobsen, California State University, Bakersfield
10:30 AM
 Carbohydrate allocation and root growth in mature aspen stands: Testing top-down allocation theory and its implications
Erin T. Wiley, University of Alberta; Pak S. Chow, University of Alberta; Simon M. Landhäusser, University of Alberta
10:50 AM
 Functional xylem anatomy response to drought and insect defoliation in Populus tremuloides
Rachel Hillabrand, University of Alberta; Uwe G. Hacke, University of Alberta; Victor J. Lieffers, University of Alberta; E.H. (Ted) Hogg, Canadian Forest Service
11:10 AM
 Hydraulic mechanisms of fungal-induced dieback in a keystone chaparral species during unprecedented drought in California
Natalie M. Aguirre, Pepperdine University; Marissa E. Ochoa, Whittier College; Helen I. Holmlund, University of California Santa Cruz; Frank W. Ewers, California State Polytechnic University, Pomona; Stephen D. Davis, Pepperdine University
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