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Professor Susanne von Caemmerer in conversation with Dr TJ Higgins

Introduction

Professor Susanne von Caemmerer was born in Freiburg in Breisgau, Baden Würtenberg, Germany. She arrived in Canberra on a gap year in 1974 and, because the Australian National University offered more options for study, fewer students and fewer rules, decided to stay and finish her BA (Hons) in Pure Mathematics in 1976, and her PhD in Plant Physiology in 1981. She is now Professor of Molecular Plant Physiology at the Research School of Biology. 

Professor von Caemmerer’s work focuses on photosynthesis and stomatal function, with an emphasis on the mathematical modelling of the carbon acquisition of plants, the biochemistry of carbon dioxide fixation and the regulation of carbon dioxide diffusion in leaves. She was part of a team that presented a mathematical model of the biochemistry of leaf photosynthesis. Her modelling approaches have been influential and are used extensively by researchers in fields ranging from ecology to crop modelling and global climate change, while her innovative use of molecular technologies to study physiological questions has led to numerous new insights into stomatal and photosynthetic regulation. 

In this interview, Professor von Caemmerer discusses what inspires her in mathematics and plant biology, her decision to stay and work in Australia, mentors, colleagues, international collaborators, and the global impact of her work. She recalls the challenges and opportunities of her early career when she was one of few women in her field, recognition by the Australian and German Academies of Science and the Royal Society of London and talks about what is next, both in her research and for science in Australia. 

Additional Information:

© Australian Academy of Science
Some re-use permitted (Creative Commons BY-NC-ND)

Dr John Passioura in conversation with Dr John Kirkegaard

Introduction

Dr John Passioura was born in Balranald on the Murrumbidgee River, New South Wales and grew up in Melbourne, where his family owned and operated a milk bar. He has a bachelor's degree in Agricultural Science (1958) and a PhD in soil chemistry (1963) from the University of Melbourne.
 

In this interview, Dr Passioura recalls his childhood influences, studies, and post-doctoral work in Europe and the UK. He returned to Australia in 1966 to take a position at CSIRO, where he eventually became Chief Research Scientist and Leader of the Crop Adaptation Program before holding an emeritus appointment. His research has encompassed soil chemistry and physics, biophysical chemistry, plant physiology and agronomy. He has made substantial contributions to understanding water relations in plants and was the first to show that roots sense water and osmotic relationships in the soil and relay inhibitory signals that modulate behaviour of the leaves. His work has contributed significantly to the breeding of plants adapted for effective water use and greater drought resistance.  
 

Passioura has conducted a number of high-level reviews, including several for the Consultative Group for International Agricultural Research (CGIAR) and has undertaken sabbaticals with Scottish Crop Research Institute in Dundee and partial secondment with Australian Grains Research and Development Organization (GRDC), where he oversaw several projects on soil and water management that aimed at improving the environmental performance of Australian grain farms. He talks here about what inspired him to build a career in science, the development of CSIRO and Australian agricultural science, the global implications of this work, his time as a Fellow of the Australian Academy of Science and possibilities for the future of scientific research. 

 

 

 

Additional Information:

© Australian Academy of Science
Some re-use permitted (Creative Commons BY-NC-ND)

xii- Tile: 48

Jim Whelan

Professor James Whelan PhD (University College Dublin) DSc (Hon Stockholm University) FAA. Plant Mitochondrial biogenesis and signalling. Elected to the Academy in 2019. 

Dedicated by: Jim Whelan

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xii 3 48

vii- Tile: 26

Susanne von Caemmerer

Professor Susanne von Caemmerer FAA FRS Mitg Leopoldina. Plant Biologist. Elected to the Academy in 2006.

Dedicated by: Susanne von Caemmerer

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Number
vii 2 26

xiv- Tile: 55

John Passioura

Dr John Passioura FAA Environmental biology; water-limited agriculture. Elected to the Academy in 1994. Dedicated by Professor Wendy Hoy AO FAA.

Dedicated by: Wendy Hoy

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Row
Number
xiv 3 55

© 2025 Australian Academy of Science

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