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BnaC.Tic40, a plastid inner membrane translocon originating from Brassica oleracea, is essential for tapetal function and microspore development in Brassica napus

Dun, Xiaoling ; Zhou, Zhengfu ; Xia, Shengqian ; Wen, Jing ; Yi, Bin ; Shen, Jinxiong ; Ma, Chaozhi ; Tu, Jinxing ; Fu, Tingdong

The Plant journal : for cell and molecular biology, 2011-11, Vol.68 (3), p.532-545 [Periódico revisado por pares]

Oxford, UK: Blackwell Publishing Ltd

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Título:
BnaC.Tic40, a plastid inner membrane translocon originating from Brassica oleracea, is essential for tapetal function and microspore development in Brassica napus
Autor: Dun, Xiaoling ; Zhou, Zhengfu ; Xia, Shengqian ; Wen, Jing ; Yi, Bin ; Shen, Jinxiong ; Ma, Chaozhi ; Tu, Jinxing ; Fu, Tingdong
Assuntos: Arabidopsis‐Brassica collinearity ; Biological and medical sciences ; Brassica - genetics ; Brassica - metabolism ; Brassica napus ; Brassica napus - growth & development ; Brassica oleracea ; Brassica rapa ; callose ; Cell differentiation, maturation, development, hematopoiesis ; Cell physiology ; Chloroplast Proteins - genetics ; Chloroplast Proteins - metabolism ; chloroplasts ; Chloroplasts - metabolism ; Chromosome Mapping ; Cloning, Molecular ; Fundamental and applied biological sciences. Psychology ; Gene Expression Regulation, Developmental ; Gene Expression Regulation, Plant ; genes ; genetic complementation ; Genetic Complementation Test ; Genomics ; Lipid Metabolism ; male sterility ; map‐based cloning ; meiosis ; Membrane Proteins - genetics ; Membrane Proteins - metabolism ; Membranes ; Molecular and cellular biology ; mutants ; Mutation ; Plant biology ; Plant Infertility ; Plant physiology and development ; Plant Proteins - genetics ; Plant Proteins - metabolism ; Plastids ; Pollen - growth & development ; Protein Transport ; Proteins ; sequence analysis ; Sequence Analysis, DNA ; tapetal function ; Tic40 ; transmission electron microscopy
É parte de: The Plant journal : for cell and molecular biology, 2011-11, Vol.68 (3), p.532-545
Notas: http://dx.doi.org/10.1111/j.1365-313X.2011.04708.x
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Descrição: Here, we describe the characteristics of a Brassica napus male sterile mutant 7365A with loss of the BnMs3 gene, which exhibits abnormal enlargement of the tapetal cells during meiosis. Later in development, the absence of the BnMs3 gene in the mutant results in a loss of the secretory function of the tapetum, as suggested by abortive callose dissolution and retarded tapetal degradation. The BnaC.Tic40 gene (equivalent to BnMs3) was isolated by a map‐based cloning approach and was confirmed by genetic complementation. Sequence analyses suggested that BnaC.Tic40 originated from BolC.Tic40 on the Brassica oleracea linkage group C9, whereas its allele Bnms3 was derived from BraA.Tic40 on the Brassica rapa linkage group A10. The BnaC.Tic40 gene is highly expressed in the tapetum and encodes a putative plastid inner envelope membrane translocon, Tic40, which is localized into the chloroplast. Transmission electron microscopy (TEM) and lipid staining analyses suggested that BnaC.Tic40 is a key factor in controlling lipid accumulation in the tapetal plastids. These data indicate that BnaC.Tic40 participates in specific protein translocation across the inner envelope membrane in the tapetal plastid, which is required for tapetal development and function.
Editor: Oxford, UK: Blackwell Publishing Ltd
Idioma: Inglês

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BnaC.Tic40, a plastid inner membrane translocon originating from Brassica oleracea, is essential for tapetal function and microspore development in Brassica napus

Dun, Xiaoling ; Zhou, Zhengfu ; Xia, Shengqian ; Wen, Jing ; Yi, Bin ; Shen, Jinxiong ; Ma, Chaozhi ; Tu, Jinxing ; Fu, Tingdong

Oxford, UK: Blackwell Publishing Ltd

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