Results 121 to 130 of about 255,995 (404)

Stacked scattering: The key to bright flowers lies in the mesophyll

American Journal of Botany, EarlyView.
Abstract Premise The coloration of flowers is caused by wavelength‐selective absorption by pigments and scattering of light by floral structures. Although the molecular, physiological, and chemical properties of floral pigments have been studied in considerable detail, how floral structures contribute to the visual signal remains largely unknown.
Larissa De Paola, Thomas A. Veldhuis, Marjan Kraaij, Doekele G. Stavenga, Kira J. Tiedge, Casper J. van der Kooi   +5 more
wiley   +1 more source

Variabilidade de genótipos de milho quanto à composição de carotenoides nos grãos Variability of maize genotypes for grain carotenoid composition

Pesquisa Agropecuária Brasileira, 2009
O objetivo deste trabalho foi caracterizar e avaliar a variabilidade quanto ao teor e perfil de carotenoides nos grãos de 134 genótipos de milho (Zea mays), com vistas à utilização em programas de biofortificação.
Wilton Soares Cardoso, Maria Cristina Dias Paes, João Carlos Cardoso Galvão, Sara de Almeida Rios, Paulo Evaristo de Oliveira Guimarães, Robert Eugene Schaffert, Aluízio Borém   +6 more
doaj   +1 more source

Carotenoids and antioxidant enzymes as biomarkers of the impact of heavy metals in food chain [PDF]

, 2016
Antioxidant enzymes (catalase and peroxidase) and carotenoids (lutein and â-carotene) are often used as biomarkers of metal contamination of water and agricultural soils.
Andrianos, Vangelis, Lamprou, Dimitra, Proestos, Charalampos, Stasinos, Sotiris, Stoikou, Vasiliki, Tsikrika, Konstantina, Zabetakis, Ioannis   +6 more
core   +3 more sources

Different carotenoid conformations have distinct functions in light-harvesting regulation in plants

Nature Communications, 2017
To avoid photodamage plants regulate the amount of excitation energy in the membrane at the level of the light-harvesting complexes (LHCs). It has been proposed that the energy absorbed in excess is dissipated via protein conformational changes of ...
N. Liguori, Pengqi Xu, I. V. van Stokkum, B. van Oort, Yinghong Lu, Daniel Karcher, R. Bock, R. Croce   +7 more
semanticscholar   +1 more source

Temperature and the evolution of flower color: A review

American Journal of Botany, EarlyView.
Abstract Flower colors brighten our natural world. How and why have they evolved? How might ongoing global warming alter their evolutionary trajectories? In this review, I examine the influence of ambient temperature on the evolution of flower color.
Elizabeth P. Lacey
wiley   +1 more source

Perturbations in the Photosynthetic Pigment Status Result in Photooxidation-Induced Crosstalk between Carotenoid and Porphyrin Biosynthetic Pathways

Frontiers in Plant Science, 2017
Possible crosstalk between the carotenoid and porphyrin biosynthetic pathways under photooxidative conditions was investigated by using their biosynthetic inhibitors, norflurazon (NF) and oxyfluorfen (OF).
Joon-Heum Park, Lien H. Tran, Sunyo Jung
doaj   +1 more source

A Cost‐Effective Hybrid Method For Homogeneous Matrix Coating in Matrix‐Assisted Laser Desorption/Ionization Mass Spectrometry Imaging Using Simultaneous Spin and Spray Deposition

Analysis &Sensing, EarlyView.
This study introduces an in‐house spin coater for matrix‐assisted laser desorption/ionization mass spectrometry imaging, providing homogeneous matrix deposition via simultaneous spray and spin. The approach yields reproducible signals and clear metabolite distributions in complex tissues.
Lanaia Ítala Louzeiro Maciel, Jussara Valente Roque, Almir Custodio Batista Junior, Gabriel Henry Morais Dufrayer, Naará da Silva Balbino, Keilah Valéria Naves Cavalcante, Marcos Divino Ferreira Junior, Andrea Rodrigues Chaves, Boniek Gontijo Vaz   +8 more
wiley   +1 more source

Feeding Mystus gulio Fry With Different Dietary Inclusion of Coccomyxa Sp.: Changes in Nutritional Profile, Pigments and Digestive Enzyme Activities

Aquaculture, Fish and Fisheries
The aim of this study was to investigate the effects of Coccomyxa sp. on the survival, nutritional profile, pigments and digestive enzyme activities of Mystus gulio.
Subeda Newase, Mohammad Ekramul Haque, Mahima Ranjan Acharjee, Trina Das, Sifatun Nur, Sadia Afrin, Zannatul Nayma, S. K. M. Azizul Islam, Helena Khatoon   +8 more
doaj   +1 more source

Effects of astaxanthin on blood coagulation, fibrinolysis and platelet aggregation in hyperlipidemic rats

Pharmaceutical Biology, 2017
Context: Astaxanthin (ASTX) is a xanthophyll carotenoid that reduces hemostasis in hyperlipidemic organisms. Its antihemostatic mechanisms remain unclear.
Zu-Yue Deng, Wei-Guang Shan, Shen-Feng Wang, Meng-Mei Hu, Yan Chen   +4 more
doaj   +1 more source

Genetic Diversity and Molecular Evolution of a Violaxanthin De-Epoxidase Gene in Maize

Frontiers in Genetics, 2016
Violaxanthin de-epoxidase (VDE) has a critical role in the carotenoid biosynthesis pathway, which is involved in protecting the photosynthesis apparatus from damage caused by excessive light.
Jing Xu, Jing Xu, Zhigang Li, Haorui Yang, Xiaohong Yang, Cuixia Chen, Hui Li   +6 more
doaj   +1 more source