Photosynthetic O2 evolution in maize inbreds and their hybrids can be differentiated by open photoacoustic cell technique

How Can Physicists Study Photosynthesis? History and Applications of the Photoacoustic Technique

“…Our results indicate a superior steady state photosynthetic activity for the clones; this can explain the better performance of clones in open field. In a similar study at the same laboratory, Silva et al [12] had already shown that maize hybrids were more photosynthetically active than maize inbreds.…”

“…In the following years, the OPC was introduced in the photosynthesis field by researchers at the Laboratory of Photothermal Spectroscopy (IFGW, UNICAMP) [11]. Since then, several studies on photosynthesis were carried out with the OPC technique [12,13]. Today, the use of photoacoustics in the study of photosynthesis is well described in extensive review articles [14,15,16].…”

“…Maize hybrids -In 1994, Silva et al were able to differentiate maize inbreds and their hybrids by measuring their photosynthetic O 2 evolution with the OPC [12]. This was an important achievement, for until then researchers had been trying to characterize the performance of maize plants in field experiments before selecting inbreds for hybrid production.…”

Photoacoustics: A Potent Tool for the Study of Energy Fluxes in Photosynthesis Research

“…In the work of da Silva (da Silva et al, 1995) the photoacoustic method has been demonstrated to be suitable, efficient and reliable technique to measure photosynthetic O 2 evolution in leaves. The O 2 evolution in intact undetached leaves of dark adapted seedlings was measured during photosynthesis with the objective to detect genetic differences (da Silva et al, 1995). Photoacoustic method can also measure state photosynthesis in intact cells and leaf tissue if the measuring pulses are given in combination with continuous background light (Kolbowski et al 1990).…”

A regularized solution with weighted Bregman distances for the inverse problem of photoacoustic spectroscopy

“…The Photoacoustic Spectroscopy (PAS) [1], or more generally the Photothermal Spectroscopy [2][3][4], are non-destructive testing methodologies that have been applied for the thermal and optical characterization of materials [5][6][7][8][9][10][11][12][13][14][15][16]. There are other applications under development, such as gases monitoring [17,18] and investigation of thermal contact resistance for copper coatings on carbon surfaces [19].…”