Various studies showed that green leaf volatiles play vital roles in biotic and abiotic stresses. However, their role drought resistance has never been studied. In order to investigate the possible of (Z)-3-hexeny-1-yl acetate (Z-3-HAC, a type volatile), various physiology experiments were performed understand physiological mechanisms Z-3-HAC alleviating wheat stress. Drought-resistant seedling...

Prunus domestica L. has green leaves, whereas Prunus cerasifera Ehrh. var. atropurpurea has red leaves due to the presence of mesophyll anthocyanins. We compared morphological and photosynthetic characteristics of leaves of these species, which were sampled from shoots grafted in pairs on P. domestica rootstocks, each pair comprising one shoot of each species. Two hypotheses were tested: (1) an...

With average global temperatures predicted to increase over the next century, it is important to understand the extent and mechanisms of C4 photosynthetic acclimation to modest increases in growth temperature. To this end, we compared the photosynthetic responses of two C4 grasses (Panicum coloratum and Cenchrus ciliaris) and one C4 dicot (Flaveria bidentis) to growth at moderate (25/20 degrees...

Illumination of dark-adapted barley plants with low light transiently induced a large nonphotochemical quenching of chlorophyll fluorescence. This reaction was identified as a form of high-energy-state quenching. Its appearance was not accompanied by zeaxanthin synthesis but was associated with a reversible inactivation of a fraction of photosystem II (PSII) centers. Both the fluorescence quenc...

Red-stemmed plants are extremely common, yet the functions of cauline anthocyanins are largely unknown. The possibility that photoabatement by anthocyanins in the periderm reduces the propensity for photoinhibition in cortical chlorenchyma was tested for Cornus stolonifera. Anthocyanins were induced in green stems exposed to full sunlight. PSII quantum yields (capital EF, Cyrillic(PSII)) and ph...

An increasing body of evidence has shown that nighttime sap flux occurs in most plants, but the physiological implications and regulatory mechanism are poorly known. The significance of corticular photosynthesis has received much attention during the last decade, however, the knowledge of the relationship between corticular photosynthesis and nocturnal stem sap flow is limited at present. In th...

The impact of Blissus occiduus Barber feeding on resistant (ÔPrestigeÕ) and susceptible (Ô378Õ) buffalograsses,Buchloë dactyloides (Nuttall) Engelmann, was evaluated throughmeasurement of carbon exchange rate, light and carbon assimilation (A-Ci) curves, chlorophyll a ßuorescence, and nonstructural carbohydrates. No signiÞcant differences in carbon exchange rates were observed between infested ...

Abstract Tomato ( Solanum lycopersicum L.) belongs to the crops that are most sensitive continuous lighting (CL). We studied age-dependent changes in sensitivity of tomato leaves CL. The exposed CL from a lag-phase their growth exhibited pronounced chlorosis with loss 30% chlorophyll after 2 weeks. values maximum F v / m ) and actual (? II quantum yields PSII photochemical activity were decreas...

Green tides have occurred in the Yellow Sea, China, every year from 2007 to 2015. The free-floating Ulva prolifera (Müller) J. Agardh was the causative macroalgal species. The co-occurring, attached U. intestinalis was also observed. Photosynthetic capacities were determined using chlorophyll fluorescence in situ and after 7 days lab acclimation, and a significant differences were noted. Pigmen...