New leaves had 15% higher quantum yield with increased absorptance within the blue spectrum than old leaves; while they reflected and transmitted more photons. In addition, young foliage had increased mass-based concentrations of chlorophyll and carotenoids; however, pigment concentrations were reduced ...
In this study, we have screened the emission of volatile organic compounds (VOCs) and analyzed pigments (chlorophylls, carotenoids) as well as phenolic compounds in Azolla filiculoides – T. azollae symbionts exposed to different light intensities. Our results revealed VOC emission mainly ...
Chlorophyll a(b) Carot: Carotenoids C i : Intercellular CO2 concentration E : Transpiration rate Fm : Maximal fluorescence yield of dark-adapted state F m′: Maximal fluorescence yield of light-adapted state F v/F m : Photosystem II (PSII) maximum efficiency F 0 : Minimal fluoresc...
they must be capable of dissipating excess energy as heat1. This is visualized as the Non-Photochemical Quenching (NPQ) of chlorophyll fluorescence and comprises different components and underlying
carotenoid accumulation in tomato fruit19. A ChIP-qPCR analysis was performed to identify whether genes (PSY1,Z-ISO,Crt-ISO1,LCY-E,LCY-B, andVDE) involved in the metabolism of lycopene, β-carotene, and phytoene, which are the main carotenoids in tomato fruit, were directly regulated by ...
of carotenoids; DEPS, de-epoxidation state of the xanthophyll-cycle pigments; FV/ FM, maximum quantum yield of photosystem II photochemistry; HRS, high radia- tion stress; Chls, total content of chlorophylls; PAR, photosynthetically active ra- ...
For carotenoids for example, R 2 decreased from 0.58 at non-flowering canopies to 0.25 at 100% flowering canopies. Temporal trends were diverse. LAI and equivalent water thickness were best estimated earlier in the growing season; chlorophyll and carotenoids towards senescence. PLSR models showed ...
When immobilized cells in agarose were exposed to ultraviolet radiation, the photobleaching of phycobilisomes took place with a faster kinetics than that of chlorophyllaand carotenoids. Isolated thylakoid membranes exposed to ultraviolet radiation confirmed the rapid degradation of phycobilisomes.Nostoc...
After 3 days of application, drought stress significantly decreased chlorophyll-a and chlorophyll-b, total carotenoids, stomatal conductance, both optimal and actual photochemical efficiency of PSII (Fv/Fm and Df/Fm, respectively), relative water content, specific leaf area, shoot length and dry ...
In the deep area, leaf chlorophyll concentrations were greatest in the leaves of bottom segments and lowest in top segments, while carotenoids and POD-ESA were greatest in the leaves of the middle segment-II. Light intensity and biofilm were found to play an important role in regulating the ...