Auxin is involved in the regulation of leaf and root development by LAF1 under short day conditions

B. S. Park; W. G. Sang; J. T. Song; B. H. Lee; J. H. Kim; H. S. Seo

doi:10.1007/s10535-011-0163-y

Auxin is involved in the regulation of leaf and root development by LAF1 under short day conditions

B. S. Park, W. G. Sang, J. T. Song, B. H. Lee, J. H. Kim, H. S. Seo

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

6 Scopus citations

Abstract

LAF1 (Long after far-red radiation 1) is a R2R3 Myb transcription factor and a signal transducer of far-red radiation. To investigate the role of LAF1 in leaf and root development, the leaf growth and vein patterning in laf1 mutants under short day conditions were examined. The length of rosette leaves was reduced and the width of the midvein was increased in laf1 mutants compared to their wild-type (WT) counterparts. In addition, cell size and cell number were both decreased in the laf1 mutant in comparison to the WT plant. A comparative analysis of gene expression showed that the transcript levels of PIN and IAA genes, encoding auxin carrier and response proteins, were decreased in laf1 mutants. LAF1 expression was also shown to be induced by 1-naphthaleneacetic acid. These results suggest that both auxin transport and auxin responses are impaired in laf1 mutants, and that LAF1 is involved in the regulation of leaf and root development mediated by auxin signaling under short day conditions.

Original language	English (US)
Pages (from-to)	647-652
Number of pages	6
Journal	Biologia Plantarum
Volume	55
Issue number	4
DOIs	https://doi.org/10.1007/s10535-011-0163-y
State	Published - Dec 2011
Externally published	Yes

Keywords

IAA
NAA
PIN
midvein
mutant
short day

ASJC Scopus subject areas

Plant Science
Horticulture

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10.1007/s10535-011-0163-y

Cite this

@article{c628365d975e4ef2b874ec793b88cf67,

title = "Auxin is involved in the regulation of leaf and root development by LAF1 under short day conditions",

abstract = "LAF1 (Long after far-red radiation 1) is a R2R3 Myb transcription factor and a signal transducer of far-red radiation. To investigate the role of LAF1 in leaf and root development, the leaf growth and vein patterning in laf1 mutants under short day conditions were examined. The length of rosette leaves was reduced and the width of the midvein was increased in laf1 mutants compared to their wild-type (WT) counterparts. In addition, cell size and cell number were both decreased in the laf1 mutant in comparison to the WT plant. A comparative analysis of gene expression showed that the transcript levels of PIN and IAA genes, encoding auxin carrier and response proteins, were decreased in laf1 mutants. LAF1 expression was also shown to be induced by 1-naphthaleneacetic acid. These results suggest that both auxin transport and auxin responses are impaired in laf1 mutants, and that LAF1 is involved in the regulation of leaf and root development mediated by auxin signaling under short day conditions.",

keywords = "IAA, NAA, PIN, midvein, mutant, short day",

author = "Park, {B. S.} and Sang, {W. G.} and Song, {J. T.} and Lee, {B. H.} and Kim, {J. H.} and Seo, {H. S.}",

note = "Funding Information: Received 9 December 2009, accepted 13 May 2010. Abbreviations: FR - far-red; HFCA - 9-hydroxyfluorene-9-carboxylic acid; IAA - indole-3-acetic acid; NAA - 1-naphthaleneacetic acid; NPA - N1-naphtylphtalamic acid; RT-PCR - real time polymerase chain reaction; TIBA - 2,3,5-triiodobenzoic acid. Acknowledgements: This work was supported by National Research Foundation of Korea Grant funded by the Korean Government (Nos. 2009-0070816 and F00003). * Corresponding authors; fax: (+82) 2 873 2056, e-mail: seohs@snu.ac.kr",

year = "2011",

month = dec,

doi = "10.1007/s10535-011-0163-y",

language = "English (US)",

volume = "55",

pages = "647--652",

journal = "Biologia Plantarum",

issn = "0006-3134",

publisher = "Springer Netherlands",

number = "4",

}

TY - JOUR

T1 - Auxin is involved in the regulation of leaf and root development by LAF1 under short day conditions

AU - Park, B. S.

AU - Sang, W. G.

AU - Song, J. T.

AU - Lee, B. H.

AU - Kim, J. H.

AU - Seo, H. S.

N1 - Funding Information: Received 9 December 2009, accepted 13 May 2010. Abbreviations: FR - far-red; HFCA - 9-hydroxyfluorene-9-carboxylic acid; IAA - indole-3-acetic acid; NAA - 1-naphthaleneacetic acid; NPA - N1-naphtylphtalamic acid; RT-PCR - real time polymerase chain reaction; TIBA - 2,3,5-triiodobenzoic acid. Acknowledgements: This work was supported by National Research Foundation of Korea Grant funded by the Korean Government (Nos. 2009-0070816 and F00003). * Corresponding authors; fax: (+82) 2 873 2056, e-mail: seohs@snu.ac.kr

PY - 2011/12

Y1 - 2011/12

N2 - LAF1 (Long after far-red radiation 1) is a R2R3 Myb transcription factor and a signal transducer of far-red radiation. To investigate the role of LAF1 in leaf and root development, the leaf growth and vein patterning in laf1 mutants under short day conditions were examined. The length of rosette leaves was reduced and the width of the midvein was increased in laf1 mutants compared to their wild-type (WT) counterparts. In addition, cell size and cell number were both decreased in the laf1 mutant in comparison to the WT plant. A comparative analysis of gene expression showed that the transcript levels of PIN and IAA genes, encoding auxin carrier and response proteins, were decreased in laf1 mutants. LAF1 expression was also shown to be induced by 1-naphthaleneacetic acid. These results suggest that both auxin transport and auxin responses are impaired in laf1 mutants, and that LAF1 is involved in the regulation of leaf and root development mediated by auxin signaling under short day conditions.

AB - LAF1 (Long after far-red radiation 1) is a R2R3 Myb transcription factor and a signal transducer of far-red radiation. To investigate the role of LAF1 in leaf and root development, the leaf growth and vein patterning in laf1 mutants under short day conditions were examined. The length of rosette leaves was reduced and the width of the midvein was increased in laf1 mutants compared to their wild-type (WT) counterparts. In addition, cell size and cell number were both decreased in the laf1 mutant in comparison to the WT plant. A comparative analysis of gene expression showed that the transcript levels of PIN and IAA genes, encoding auxin carrier and response proteins, were decreased in laf1 mutants. LAF1 expression was also shown to be induced by 1-naphthaleneacetic acid. These results suggest that both auxin transport and auxin responses are impaired in laf1 mutants, and that LAF1 is involved in the regulation of leaf and root development mediated by auxin signaling under short day conditions.

KW - IAA

KW - NAA

KW - PIN

KW - midvein

KW - mutant

KW - short day

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U2 - 10.1007/s10535-011-0163-y

DO - 10.1007/s10535-011-0163-y

M3 - Article

AN - SCOPUS:80054031704

SN - 0006-3134

VL - 55

SP - 647

EP - 652

JO - Biologia Plantarum

JF - Biologia Plantarum

IS - 4

ER -

Auxin is involved in the regulation of leaf and root development by LAF1 under short day conditions

Abstract

Keywords

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