Distinct growth light and gibberellin regimes alter leaf anatomy and reveal their influence on leaf optical properties

Leaf Development Monitoring and Early Detection of Water Deficiency by Low Field Nuclear Magnetic Resonance Relaxation in Nicotiana tabacum Plants

“…Therefore, according to the attribution of the T 2 peaks to water cellular fractions proposed for oilseed rape leaf and due to the agreement in the relaxation time of the different water fractions, the following attribution can be assumed for tobacco: the first peak with a T 2-1 of 15 ms could be associated with plastids and small vacuoles, the second one with a T 2-2 of 120 ms could be associated with the water inside the vacuole of spongy cells, and the last peak characterized by T 2 longer than 300 ms, with the water inside the vacuoles of palisade cells. Unlike in oilseed rape leaves, the vacuolar volume of the two main parenchyma of the young tobacco leaves is already very different [47], resulting in two separate peaks.…”

Dorsoventral regulation of photosynthetic functions related to morphological and anatomical structures in field-grown sorghum

“…3A). The leaf spectrum properties of Helianthus (Wang et al 2008, Gorton et al 2010, Nicotiana tabacum (Falcioni et al 2017), and Asarum canadense (Brodersen and Vogelmann 2010) had been investigated; it turned out that the leaf absorptance rates were different between adaxial and abaxial illumination. Unlike these bifacial species, the light absorbance capacity was nearly the same whether the light illuminated adaxial or abaxial surface of sorghum leaves.…”

“…Wang et al (2008) investigated the stomatal response of two surfaces in intact leaves of Helianthus annuus L., and proved that the sensitivity to light response was higher in abaxial stomata in self-transmitted light. In addition, Falcioni et al (2017) showed that self-transmitted light might contain more green light, which was proved more efficient in driving light reaction. Our data showed the specific LCP and AQE of abaxial surface were insignificant in self-transmitted light compared to incident light ( Table 2).…”

“…The variations of photosynthetic regulation between the adaxial and abaxial surfaces are determined by factors related to leaf anatomic structures. The light absorption, energy conversion and distribution and gas diffusion in a leaf were proved to regulate CO2 assimilation (Vogelmann et al 1996, Sowiński et al 2008, Falcioni et al 2017. The total section area of the bundle sheath cells and the first layer of surrounding mesophyll related to CO2 diffusion within the leaf were also considered as the structural evidences of various CO2 assimilation between two leaf surfaces of C4 monocotyledonous species (Soares-Cordeiro et al 2009).…”

“…The total section area of the bundle sheath cells and the first layer of surrounding mesophyll related to CO2 diffusion within the leaf were also considered as the structural evidences of various CO2 assimilation between two leaf surfaces of C4 monocotyledonous species (Soares-Cordeiro et al 2009). The leaf absorbance rates of adaxial side to incident light were greatly different from abaxial one, and the leaf structure could change the absorption of incident light (Gorton et al 2010, Falcioni et al 2017. Meanwhile, the adaptive changes in CO2 diffusion can be rapid and can be reversed by stomatal responses (Centritto et al 2003, Flexas et al 2007, Xiong et al 2018.…”