Geul Bang

Chungnam National University

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Youn‐Il Park

Chungnam National University

Giltsu Choi

Korea Advanced Institute of Science and Technology

Misuk Cho

Chungnam National University

Sang-Bong Choi

Myongji University

Dong Ho Shin

Kangdong Sacred Heart Hospital

Prasanta Kumar Das

Indian Institute of Technology Hyderabad

Keunhwa Kim

Gyeongsang National University

MyungGoo Choi

Chungnam National University

Sang-Dong Yoo

Korea University

Sang‐Bong Choi

Myongji University

Cooperative Institutions

Chungnam National University

Korea Research Institute of Standards and Science

Korea Research Institute of Bioscience and Biotechnology

Gyeongsang National University

Myongji University

Kyung Hee University

Korea Advanced Institute of Science and Technology

University of California, Davis

Kumho Petrochemical (South Korea)

Seoul National University

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HY5 regulates anthocyanin biosynthesis by inducing the transcriptional activation of the MYB75/PAP1 transcription factor in Arabidopsis

FEBS Letters (2013)

Dong Ho Shin MyungGoo Choi Keunhwa Kim Geul Bang Misuk Cho

Several positive transcription factors regulate Arabidopsis anthocyanin biosynthesis. HY5, a component of light‐signaling pathways, and PAP1, an R2R3‐MYB transcription factor, share common regulatory targets on anthocyanin biosynthesis genes. The epistatic interactions between the two transcription factors are currently unknown. To address this problem, we analyzed crosses between hy5 and pap1 mutants ( hy5pap1 ) or pap1D overexpressors ( hy5pap1D ), performed chromatin immunoprecipitation‐qPCR, and determined the PAP1 promoter region through deletion analysis. The results show that HY5 regulates PAP1 expression via direct binding to G‐ and ACE‐boxes in the promoter region, which suggests bifurcate regulation of anthocyanin biosynthesis by HY5 via transcriptional activation of PAP1.

Chromatin immunoprecipitation

MYB

Transcription

10.1016/j.febslet.2013.03.037

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Citations (311)

Photosynthesis-dependent anthocyanin pigmentation in Arabidopsis

Plant Signaling & Behavior (2011)

Prasanta Kumar Das Geul Bang Sang-Bong Choi Sang-Dong Yoo Youn‐Il Park

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.

Phytochrome

Photoprotection

Plant Physiology

Plastoquinone

Phototropin

Autotroph

10.4161/psb.6.1.14082

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Citations (79)