Snowy cotyledon 2: the identification of a zinc finger domain protein essential for chloroplast development in cotyledons but not in true leaves.

Plant Molecular Biology
Verónica AlbrechtK Apel

Abstract

In cotyledons of etiolated seedlings light-dependent transformation of etioplasts to chloroplasts marks the transition from heterotrophic to autotrophic growth. Genetic factors required for this developmental step were identified by isolating mutants of Arabidopsis thaliana that were impaired in chloroplast development in cotyledons but not in true leaves. Several mutants with chlorophyll-deficient cotyledons were isolated and dubbed snowy cotyledon (sco). Here we describe the identification and detailed characterization of the snowy cotyledon 2 mutant. The mutated SCO2 gene was identified using a map-based cloning strategy. SCO2 was shown to encode a novel protein which contains a single DnaJ-like zinc finger domain. The SCO2 protein fused to GFP was shown to be present in chloroplasts. Inactivation of SCO2 has almost no detectable impact on the levels of transcripts encoding plastid-specific proteins but leads to a significant reduction of plastid protein levels. Even though transcripts of SCO2 have been found ubiquitously in green tissues as well as in roots phenotypic changes due to SCO2 inactivation are confined to cotyledons. The cotyledons in embryos of sco2 are unaffected in their chloroplast biogenesis. Upon precocious...Continue Reading

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Citations

Feb 19, 2011·Plant Physiology·Barry J Pogson, Verónica Albrecht
Feb 19, 2011·Plant Physiology·Matthew R WillmannPablo D Jenik
Nov 15, 2013·Journal of Experimental Botany·Fanying KongQingwei Meng
Sep 12, 2009·The EMBO Journal·Mark T Waters, Jane A Langdale
May 30, 2012·The Plant Journal : for Cell and Molecular Biology·Jiang ZhangRalph Bock
Feb 11, 2015·Biochimica Et Biophysica Acta·Barry J PogsonVerónica Albrecht-Borth
Jan 24, 2015·Biochimica Et Biophysica Acta·Anna RastJörg Nickelsen
Oct 9, 2014·Frontiers in Plant Science·Sazzad Karim, Henrik Aronsson
Aug 21, 2016·Journal of Experimental Botany·Changhong LiuZemin Zhang
Sep 17, 2016·Scientific Reports·Seyeon ParkSang-Soo Kwak
Dec 23, 2016·The Plant Journal : for Cell and Molecular Biology·Tamara Muñoz-NortesJosé Luis Micol
Dec 23, 2017·The New Phytologist·Pablo Pulido, Dario Leister
Nov 23, 2019·The Plant Journal : for Cell and Molecular Biology·Florian A BuschHiroshi Shimada
Jun 1, 2015·Functional Plant Biology : FPB·Diep GangulyVerónica Albrecht-Borth
Dec 16, 2018·Planta·Li WangElizabeth S Dennis
Oct 20, 2018·Frontiers in Plant Science·Yujiao QuChristian Schmitz-Linneweber
Jul 8, 2020·International Journal of Molecular Sciences·Zhuanzhuan JiangXin Hou
Aug 18, 2018·Photosynthesis Research·Emelie Lindquist, Henrik Aronsson
Apr 4, 2021·International Journal of Molecular Sciences·Xinwei WangJianwei Xiao

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