Photosynthesis-dependent anthocyanin pigmentation in Arabidopsis.
Light is the ultimate energy source for photo-autotrophs on earth. For green plants, however, it can also be toxic under certain stressful environmental conditions and at critical developmental stages. Anthocyanins, a class of flavonoids, act as an effective screening mechanism that allows plant survival and proliferation under occasional periods of harmful irradiation through modulation of light absorption. Apart from light-sensing through photoreceptors such as phytochrome and cryptochrome, plants use the photosynthetic electron transfer (PET) chain to integrate light information. The redox status of the plastoquinone (PQ) pool of the PET chain regulates anthocyanin biosynthesis genes, together with the plant hormone ethylene and plant hormone-like sugars. A complex signaling apparatus in acyanic cells appears to transduce information to cyanic cells to regulate anthocyanin production through an intercellular signaling pathway that remains largely uncharacterized. This review will highlight recent advances in this field and their implications for the regulation of anthocyanin pigmentation.
Department of Biological Science and Graduate School of Analytical Science and Technology, Chungnam National University, Daegeon, Korea.
Prasanta Kumar
PK
Das
Bang
B
Geul
Sang-Bong
SB
Choi
Sang-Dong
SD
Yoo
Youn-Il
YI
Park
D000872:Anthocyanins / Q000096:biosynthesis / Q000378:metabolism*; D017360:Arabidopsis / Q000166:cytology / Q000378:metabolism* / Q000528:radiation effects; D005030:Ethylenes / Q000378:metabolism; D008027:Light; D010788:Photosynthesis / Q000528:radiation effects; D010858:Pigmentation / Q000528:radiation effects
D000872:Anthocyanins; D005030:Ethylenes; C036216:ethylene
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