Abiotic stress, acclimation, and adaptation in carbon fixation processes

The influences of stomatal size and density on rice abiotic stress resilience

“…Our results could have been impacted by growth chamber light intensity (1500 μmol m −2 s −1 PAR), which while high, was not saturating ( c . 2000–2200 μmol m −2 s −1 PAR) (Murchie et al ., 2022 ), and so not all stomata may have been as open possible. Nevertheless, we identified one naturally bred variety, UCP‐188, that behaved differently to lines with similar SS and SD, and this clearly impacted on our g sw – g smax regression analysis (see Fig.…”

Breath of green life: Reduction in plant day and night respiration under elevated CO2

“…Another complication in assessing NPP relates to the fact that plant respiration occurs both in the light ( R l ) or the dark ( R d ). Whilst light partially inhibits leaf respiration, the contribution of R l versus R d to CO 2 evolution varies greatly ( Crous et al 2017 ; Murchie et al 2022 ). This is partly a result of day length and differential day versus night temperature in most environments, as well as physiological status and variations in C and nitrogen (N) metabolism between species ( Atkin et al 2007 ; Gong et al 2017 ).…”

Dynamic photosynthesis and its mechanisms in response to salt stress

“…leaf area, leaf thickness, cell number, cell size and cell arrangement) and/or biochemistry to optimize photosynthetic efficiency and productivity due to long-term (e.g. days) changes in their environment as well as leaf development (Murchie et al, 2022). Those processes are regulated by changes in gene transcription (Schneider et al, 2019) which cause changes in protein abundance (Caliandro et al, 2013;Vialet-Chabrand et al, 2017a).…”

“…These changes may be caused by changes in stomatal morphology and physiology, as affected by hydraulic and hormonal signals (e.g. ABA): 1) Stomatal size and density have been considered as functional traits with potential importance for plant acclimation to environmental changes (Matthews et al, 2018;Murchie et al, 2022;Nicotra et al, 2010). I reported that stomata were ca.…”