A mutation in ELA1, an age-dependent negative regulator of PAP1/MYB75, causes UV- and cold stress-tolerance in Arabidopsis thaliana seedlings

Seungwon Choi; Ye Rim Kwon; Md Aktar Hossain; Suk Whan Hong; Byeong ha Lee; Hojoung Lee

doi:10.1016/j.plantsci.2009.02.010

A mutation in ELA1, an age-dependent negative regulator of PAP1/MYB75, causes UV- and cold stress-tolerance in Arabidopsis thaliana seedlings

Seungwon Choi, Ye Rim Kwon, Md Aktar Hossain, Suk Whan Hong, Byeong ha Lee, Hojoung Lee

Research output: Contribution to journal › Article › peer-review

40 Citations (Scopus)

Abstract

UV light is one of several severe abiotic stresses encountered by terrestrial plants. It is impairing cellular metabolism and causing cell death by damaging DNA, proteins, and lipids. Phenolics including various flavonoids serve as "sunscreens" to UV exposure; in particular, flavonoids play pivotal roles in absorbing free radicals, quenching singlet oxygen, and decomposing peroxides. Here, we screened Arabidopsis thaliana for a UV-tolerant mutant with elevated flavonoid levels, and identified the recessive ela1 mutant. We demonstrate that the enhanced UV stress-tolerance shown in the ela1 mutant seems to be conferred by high levels of UV-absorbing pigments such as anthocyanins. The ela1 mutant exhibited novel characteristics as a negative regulator of PAP1 and cold stress-tolerance, and its role is specific to early stages of A. thaliana development. Our results clearly suggest that flavonoid biosynthesis is regulated by a developmental program where ELA1 participates as an important regulatory component.

Original language	English
Pages (from-to)	678-686
Number of pages	9
Journal	Plant Science
Volume	176
Issue number	5
DOIs	https://doi.org/10.1016/j.plantsci.2009.02.010
Publication status	Published - 2009 May

Bibliographical note

Funding Information:
This work was supported by a grant from Korea Science and Engineering Foundation (KOSEF), SRC (to H.L., Grant # R11-2001-092-04004-0) and in part by grants from ARPC (to H.L., Grant # 107100-03-1-SB010 and Grant # 108066-03-1-HD120).

Keywords

Anthocyanin
Arabidopsis thaliana
Chalcone synthase
Cold stress
PAP1/MYB75
UV stress

ASJC Scopus subject areas

Genetics
Agronomy and Crop Science
Plant Science

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10.1016/j.plantsci.2009.02.010

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title = "A mutation in ELA1, an age-dependent negative regulator of PAP1/MYB75, causes UV- and cold stress-tolerance in Arabidopsis thaliana seedlings",

abstract = "UV light is one of several severe abiotic stresses encountered by terrestrial plants. It is impairing cellular metabolism and causing cell death by damaging DNA, proteins, and lipids. Phenolics including various flavonoids serve as {"}sunscreens{"} to UV exposure; in particular, flavonoids play pivotal roles in absorbing free radicals, quenching singlet oxygen, and decomposing peroxides. Here, we screened Arabidopsis thaliana for a UV-tolerant mutant with elevated flavonoid levels, and identified the recessive ela1 mutant. We demonstrate that the enhanced UV stress-tolerance shown in the ela1 mutant seems to be conferred by high levels of UV-absorbing pigments such as anthocyanins. The ela1 mutant exhibited novel characteristics as a negative regulator of PAP1 and cold stress-tolerance, and its role is specific to early stages of A. thaliana development. Our results clearly suggest that flavonoid biosynthesis is regulated by a developmental program where ELA1 participates as an important regulatory component.",

keywords = "Anthocyanin, Arabidopsis thaliana, Chalcone synthase, Cold stress, PAP1/MYB75, UV stress",

author = "Seungwon Choi and Kwon, {Ye Rim} and Hossain, {Md Aktar} and Hong, {Suk Whan} and Lee, {Byeong ha} and Hojoung Lee",

note = "Funding Information: This work was supported by a grant from Korea Science and Engineering Foundation (KOSEF), SRC (to H.L., Grant # R11-2001-092-04004-0) and in part by grants from ARPC (to H.L., Grant # 107100-03-1-SB010 and Grant # 108066-03-1-HD120). ",

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doi = "10.1016/j.plantsci.2009.02.010",

language = "English",

volume = "176",

pages = "678--686",

journal = "Plant Science",

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T1 - A mutation in ELA1, an age-dependent negative regulator of PAP1/MYB75, causes UV- and cold stress-tolerance in Arabidopsis thaliana seedlings

AU - Choi, Seungwon

AU - Kwon, Ye Rim

AU - Hossain, Md Aktar

AU - Hong, Suk Whan

AU - Lee, Byeong ha

AU - Lee, Hojoung

N1 - Funding Information: This work was supported by a grant from Korea Science and Engineering Foundation (KOSEF), SRC (to H.L., Grant # R11-2001-092-04004-0) and in part by grants from ARPC (to H.L., Grant # 107100-03-1-SB010 and Grant # 108066-03-1-HD120).

PY - 2009/5

Y1 - 2009/5

N2 - UV light is one of several severe abiotic stresses encountered by terrestrial plants. It is impairing cellular metabolism and causing cell death by damaging DNA, proteins, and lipids. Phenolics including various flavonoids serve as "sunscreens" to UV exposure; in particular, flavonoids play pivotal roles in absorbing free radicals, quenching singlet oxygen, and decomposing peroxides. Here, we screened Arabidopsis thaliana for a UV-tolerant mutant with elevated flavonoid levels, and identified the recessive ela1 mutant. We demonstrate that the enhanced UV stress-tolerance shown in the ela1 mutant seems to be conferred by high levels of UV-absorbing pigments such as anthocyanins. The ela1 mutant exhibited novel characteristics as a negative regulator of PAP1 and cold stress-tolerance, and its role is specific to early stages of A. thaliana development. Our results clearly suggest that flavonoid biosynthesis is regulated by a developmental program where ELA1 participates as an important regulatory component.

AB - UV light is one of several severe abiotic stresses encountered by terrestrial plants. It is impairing cellular metabolism and causing cell death by damaging DNA, proteins, and lipids. Phenolics including various flavonoids serve as "sunscreens" to UV exposure; in particular, flavonoids play pivotal roles in absorbing free radicals, quenching singlet oxygen, and decomposing peroxides. Here, we screened Arabidopsis thaliana for a UV-tolerant mutant with elevated flavonoid levels, and identified the recessive ela1 mutant. We demonstrate that the enhanced UV stress-tolerance shown in the ela1 mutant seems to be conferred by high levels of UV-absorbing pigments such as anthocyanins. The ela1 mutant exhibited novel characteristics as a negative regulator of PAP1 and cold stress-tolerance, and its role is specific to early stages of A. thaliana development. Our results clearly suggest that flavonoid biosynthesis is regulated by a developmental program where ELA1 participates as an important regulatory component.

KW - Anthocyanin

KW - Arabidopsis thaliana

KW - Chalcone synthase

KW - Cold stress

KW - PAP1/MYB75

KW - UV stress

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DO - 10.1016/j.plantsci.2009.02.010

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SN - 0168-9452

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ER -

A mutation in ELA1, an age-dependent negative regulator of PAP1/MYB75, causes UV- and cold stress-tolerance in Arabidopsis thaliana seedlings

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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