Growth temperature and genotype can influence seedling vigor in cotton (Gossypium hirsutum L.), identifying genotypes that perform well under different extremes may broaden the range of temperatures over which optimum growth could be obtained. To this end, a controlled environment study was conducted to evaluate response advanced breeding lines utility rapid, fluorescence-based measurements (th...

The effects of pristine polystyrene microplastics (pMPs) without any pretreatment at different concentrations (0, 10, 20, 50, and 100 mg/L) on Phaeodactylum tricornutum Bohlin two initial algae densities (105 106 cells mL) were assessed in this study. Hormesis-like found when microalgae grew with pMPs. results showed that pMPs inhibited growth under a high concentration tolerated by individual ...

Abstract To investigate the effects of water withholding on 17 tomato ( Solanum lycopersicum L.) landraces collected from different climatic zones Iran and two commercial hybrids, polyphasic OJIP fluorescence transient, relative content (RWC), electrolyte leakage (EL) vegetative growth parameters were analyzed. Duncan’s multiple range test (DMRT) for all studied drought factor index (DFI) based...

Acute toxicity of excess Cu on the photosynthetic performance of Chlorella pyrenoidosa was examined by using chlorophyll a fluorescence transients and JIP-test after exposure to elevated Cu concentrations for a short time period. High Cu concentration resulted in a significant suppression in photosynthesis and respiration. The absorption flux (ABS/RC) per PSII reaction center increased with inc...

The presented study concerns the delayed response of photosynthetic performance to summer drought. Increasing drought events are thought be one most detrimental and expensive natural disasters. For that reason, we studied condition urban trees, which especially susceptible water deficit. Three species linden trees (T. tomentosa, T. × europaea cordata) growing in city area Krakow, Poland, were i...

The most photosynthetically active leaves of rice seedlings were severely damaged when shoots but not roots were chilled (10°C/25°C, respectively), but no such injury was observed when the whole seedling was chilled (10°C/10°C). To elucidate the mechanisms, we compared the photosynthetic characteristics of the seedlings during the dark chilling treatments. Simultaneous analyses of Chl fluoresce...

BACKGROUND Non photochemical reduction of PQ pool and mobilization of LHCII between PSII and PSI are found to be linked under abiotic stress conditions. The interaction of non photochemical reduction of PQ pool and state transitions associated physiological changes are critically important under anaerobic condition in higher plants. METHODOLOGY/FINDINGS The present study focused on the effect...

Melatonin (N-acetyl-5-methoxytryptamine) plays critical roles in plant growth and development and during the response to multiple abiotic stresses. However, the roles of melatonin in plant response to K+ deficiency remain largely unknown. In the present study, we observed that the endogenous melatonin contents in bermudagrass were remarkably increased by low K+ (LK) treatment, suggesting that m...

The current knowledge regarding transcriptomic changes induced by alkalinity on plants is scarce and limited to studies where plants were subjected to the alkaline salt for periods not longer than 48 h, so there is no information available regarding the regulation of genes involved in the generation of a new homeostatic cellular condition after long-term alkaline stress. Lotus japonicus is a mo...

Seedlings of Citrus grandis (L.) Osbeck cv. Tuyou were irrigated daily for 5 months with nutrient solution containing 0 (control), 0.2, 0.6 or 1.6 mM aluminum (Al) from AlCl(3).6H(2)O. Shoot growth was more sensitive to Al toxicity than root growth, gas exchange, chlorophyll (Chl) concentration, polyphasic Chl a fluorescence (OJIP) induction and related parameters. Leaves of Al-treated plants s...