NDLI: Importance of the rice TCD9 encoding subunit of chaperonin protein 60 (Cpn60 ) for the chloroplast development during the early leaf stage.

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Importance of the rice TCD9 encoding subunit of chaperonin protein 60 (Cpn60 ) for the chloroplast development during the early leaf stage.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Jiang, Quan Mei, Jie Gong, Xiao-Di Xu, Jian-Long Zhang, Jian-Hui Teng, Sheng Lin, Dong-Zhi Dong, Yan-Jun
Description	Country affiliation: China Author Affiliation: Jiang Q ( Development Center of Plant Germplasm Resources, College of Life and Environment Sciences, Shanghai Normal University, Shanghai 200234, China.); Mei J ( Development Center of Plant Germplasm Resources, College of Life and Environment Sciences, Shanghai Normal University, Shanghai 200234, China.); Gong XD ( Development Center of Plant Germplasm Resources, College of Life and Environment Sciences, Shanghai Normal University, Shanghai 200234, China.); Xu JL ( The Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, 12 South Zhong-Guan Cun Street, Beijing 100081, China.); Zhang JH ( Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, China.); Teng S ( Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, China.); Lin DZ ( Development Center of Plant Germplasm Resources, College of Life and Environment Sciences, Shanghai Normal University, Shanghai 200234, China. Electronic address: dzlin@shun.edu.cn.); Dong YJ ( Development Center of Plant Germplasm Resources, College of Life and Environment Sciences, Shanghai Normal University, Shanghai 200234, China. Electronic address: dong@shnu.edu.cn.)
Abstract	The chloroplast development governs plant growth and metabolism. This study characterized a novel rice thermo-sensitive chloroplast development 9 (tcd9) mutant, which exhibited the albino phenotype before the 3-leaf stage grown below 24 °C whereas displayed normal green at over 28 °C or even at 20 °C after 5-leaf stage. The obvious decrease in Chl levels, abnormal chloroplasts with few thylakoid lamella and abnormal thylakoids were observed for the albino mutant seedlings at low temperature, but the mutant was apparently normal green at high temperature, suggesting the thermo-sensitivity of albino phenotype. Genetic analysis showed that the albino phenotype was controlled by a single recessive nuclear gene (tcd9). The map-based cloning and molecular complementation tests revealed that the mutation of TCD9 encoding subunit of Cpn60 protein (Cpn60 ), localized in chloroplasts, was responsible for albino phenotype. In addition, TCD9 exhibited the high expression in all tested tissues, especially in young leaves. The transcriptional analysis indicated that all expression levels of the studied genes related to chloroplast development in tcd9 mutant were seriously affected in the albino seedlings at 20 °C, whereas some of them recovered into normal levels in green-seedlings at 32 °C. Our observations suggest that the nuclear-encoded Cpn60 protein TCD9 plays a crucial role in chloroplast development at early leaf stage of rice.
File Format	HTM / HTML
ISSN	01689452
Volume Number	215-216
e-ISSN	18732259
Journal	Plant Science
Language	English
Publisher	Elsevier
Publisher Date	2014-02-01
Publisher Place	Ireland
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Botany Chaperonin 60 Genetics Chloroplasts Genes, Plant Oryza Sativa Plant Development Plant Proteins Protein Subunits Metabolism Genes, Chloroplast Mutation Growth & Development Phenotype Plant Leaves Seedling Temperature Journal Article Research Support, Non-u.s. Gov't
Content Type	Text
Resource Type	Article
Subject	Genetics Plant Science Medicine Agronomy and Crop Science

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Importance of the rice TCD9 encoding subunit of chaperonin protein 60 (Cpn60 ) for the chloroplast development during the early leaf stage.

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