Lipids as pigments in plants and bird feathers.

Birds acquire the pigments that color their feathers red or yellow by eating plant materials that contain carotenoid pigments, such as canthaxanthin and zeaxanthin.

The differences in pigmentation between male and female birds are the result of differences in intestinal uptake and processing of carotenoids.

TLS Online TPP Program

#Id: 8132

#XL - Q Biochemistry

Lipids as pigments in plants and bird feathers.

Birds acquire the pigments that color their feathers red or yellow by eating plant materials that contain carotenoid pigments, such as canthaxanthin and zeaxanthin.

The differences in pigmentation between male and female birds are the result of differences in intestinal uptake and processing of carotenoids.

TLS Online TPP Program

#Id: 8132

#XL - T Zoology

Lipids as pigments in plants and bird feathers.

Birds acquire the pigments that color their feathers red or yellow by eating plant materials that contain carotenoid pigments, such as canthaxanthin and zeaxanthin.

The differences in pigmentation between male and female birds are the result of differences in intestinal uptake and processing of carotenoids.

TLS Online TPP Program

#Id: 9772

#XL - R Botany

Phytoalexins are low molecular weight, lipophilic antimicrobial compounds for which phenylalanine is a substrate used by phenylalanine ammonia lyase (PAL),

TLS Online TPP Program

#Id: 9773

#XL - R Botany

In Arabidopsis, PTI induces production of indole glucosinolates, to control of fungal pathogens. 

TLS Online TPP Program

#Id: 9774

#XL - R Botany

PTI and fungal pathogen entry into epidermal tissue induces several specific cytochrome P450 enzymes, and this leads to accumulation of the indole glucosinolate 4‐methoxyindol‐3‐ylmethylglucosinolate (4M13G).

TLS Online TPP Program

#Id: 9775

#XL - R Botany

Salicylic acid (SA) is a phenolic compound and derived from the phenylpropanoid pathway that accumulates to high levels as both free and glucoside conjugates in the vicinity of incompatible infection sites.

TLS Online TPP Program

#Id: 9776

#XL - R Botany

SA accumulation leads to enhanced local ROS production.

TLS Online TPP Program

#Id: 9777

#XL - R Botany

nahG gene encodes the enzyme salicylate hydroxylase, which converts SA to catechol and thus dramatically reduces SA levels.